HARD SAQs Flashcards

(315 cards)

1
Q

define maternal mortality

A

death of a pregnant women at any gestation and within 42 days of delivery

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2
Q

maternal mortality ratio

A

MMR = number of direct deaths + indirect deaths + not yet classified / 100,000

4.8/100,000 australia
ATSI 21
aiming <70 WHO

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3
Q

what are the limitations of MMR

A

underreporting
misclassifications
biased
accuracy
interpretation
usefulness in planning
excludes late maternal deaths
does not capture morbidity or broader burden of disease
lack of context or cause
does not reflect inequalities eg rural, ATSI
difficult to compare between countries

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4
Q

what are some benefits of MMR

A

standardised
WHO
assist in comparison between countries
help target resources

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5
Q

WHO goals for Womens health

A

MMR <70

mental health - suicide in top 4 causes of death therefore aim to reduce

universal access to reproductive health

First Nations women

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6
Q

how improve MMR in developing countries

A

SEPSIS - hand hygiene, Abx, vaccinations

PPH - TXA, miso (room temperature), training

OBSTRUCTED LABOUR - 1:1 trained accoucheurs, access to OT

HTN - MgSO4, antihypertensives

SAFE ABORTION - access, education

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7
Q

define direct maternal death and give and example

A

death due to pregnancy or pregnancy related complications or management of pregnancy
postpartum haemorrhage, AFE

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8
Q

define indirect maternal death and give an example

A

death due to a condition exacerbated by physiology of pregnancy
CVD, sepsis

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9
Q

what are the factors that make a good study

A

RCT
multicentre
international
blinded
large numbers
specific primary and secondary outcomes
ethics
specific inclusion and exclusion criteria
equal numbers in interventions
governing body

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10
Q

ALPS trial/Gyamm Bannerman

A

determined whether there was benefit for babies K34-37 to receive steroids

maternal: no change in choir, endometritis, CS< time of delivery, LOS

neonatal: reduction in RDS, TTN, surfactant use, I/V, NICU, bronchopulmonary dysplasia

childhood: if reduced bronchopulmonary dysplasia –> presume reduced chronic lung disease

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11
Q

risk factors for cholestasis

A

personal/fhx
AMA
hep C
multiple pregnancy

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12
Q

what is the pathophysiology of cholestasis?

A

unknown
likely interaction between genetic, hormonal and environmental

genetic - rare variants in BA transporters, defective ACB4A gene, familial clusters

hormonal - increased E but also altered progesterone metabolism and increased progesterone sulphated metabolites –> itch

environmental: reduced selenium, reduced Vit D, seasonal variant

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13
Q

cholestasis management

A

explain diagnosis

MDT. high risk pregnancy

risks therefore discuss red flags
- maternal: pruritus, GDM, PET, vit K def –> PPH, long term (liver disease, autoimmune diseases)
- fetal: stillbirth, meconium liquor, PTB, RDS, long term not known

itch
- general
- antihistamine
- topical emollients
- URSO - PITCHES

monitor BA - weekly if >40, if over 40 then need coags if abnormal and need fit K then to be done weekly and before delivery
no evidence for CTG or USS

timing of delivery depends on highest BA
- obstetric MOD

postpartum
- discontinue urso
- consider annual LFT + 6/52 PP
- 60-70% recurrence
- vit K for baby

contraception
- COCP can be started once LFTs normalise
- itch/cholestasis develop stop COCP
- check LFT 3-6/12 PP

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14
Q

ICP is no longer a diagnosis of exclusion - when would you further investigate?

A

features that prompt further ix
- markedly abnormal LFTs
early onset
- rapidly progressive biochemical picture
- liver failure
- acute infection
- no resolution after birth

if concerns re viral infection: Hep A/B/C, CMV, EBV
if concerns autoimmune eg ICP <K30, BA >40, LFT >200 (5x upper limit), Fhx autoimmune: AMA, anti-smooth muscle Ab, anti-liver-kidney microsomal
structural: liver USS

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15
Q

what pre operative interventions can you do at time of LSCS

A

pre operative planning
- MDT
- if high risk for PPH then cell saver, plan
- cross match

anaemia - treat

placental location

Pmedhx/surghx - ?altered anatomy –> stents

IV Abu 30-60 minutes prior reduces endometritis and wound infection 60%

timing of anticoagulants

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16
Q

intraoperative steps at LSCS to reduce complications

A

IDC - drain bladder

oxytocin at time of delivery reduce PPH 50%

prep
- skin
- vagina reduce 50%

prep/drape/sterile

post operative cares and wound dressings

site of incision - high BMI, pannus

reduce intraoperative time and if extended consider additional IV Abu

meticulous haemoatsis

closure of submit if >2cm - reduce serum and wound infection

consider changing gloves

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17
Q

discuss risks and benefits of maternal request CS

A

Maternal short term
- increased: death, permpartum hysterectomy, endometritis, wound infection, pain at 3/7 pP
- reduced: OASI, pain during birth, anal sphincter, prolapse sx

Maternal long term
- increased rupture, PAS, surgery for adhesions, anterior anatomical wall hernia
- reduced: surgery for prolapse or stress incontinence within 25 years, reduced urinary and faecal incontinence at 1 year

Neonatal short term
- reduced neonatal mortality

Neonatal long term
- increased risk: hospitalisation for Resp and GI infections, asthma

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18
Q

menopause management

A

education and validation
- well woman check
- stressful –> validate
- natural life transiion
- education on physiology of menopause and variety pf symptoms and sequelae
- opportunity for health optimisation

discuss proven benefits of MHT
- reduced VMS, GUS, OP/fractures, CVD protective
- mood, cognition, sleep

discuss potential risks
- increased breast cancer
- stroke, VTE, ovarian cancer, gallbladder disease

explore contraindications
- breast cancer, unexplained AUB, active VTE, high risk CVD, uncontrolled HTN, active liver dsiease

lifestyle measures

education on types of formations
- lowest effective dose
- post menopausal continuous progesterone
- patches
- uterus needs E+P

follow up
- review on regular basis
- risks increased with prolonged use

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19
Q

strategies to reduce bowel injury at lap

A

awareness of anatomy/surgical skills/instrument handling
instruments within field, reduce traffic
do not cross instruments
do not lye instruments on structures
AEM
do not use reusable instruments, check installation prior
plastic holders
activation button

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20
Q

what investigations would you arrange for a potential fistula

A

bedside: urine MCS - exclude infection
bloods
- FBC - exclude infection
- UEC - renal function

imaging
- pelvic USS - exclude aroma, abscess, haematoma
- CT IVP - assess renal tract, look for extravasacition
- MRI pelvis

special
- EUA + cystoscopy
- high vaginal swab - exclude infection
-dye test/tampon test

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21
Q

principles of management of fistula

A

treat underlying infection, optimise pre operatively
understanding of fistula and approach

MDT

if urethral or urethral injury if fistula may be suitable for conservative management 4/52 IDC

surgical technique
- prophylactic Abx
- cannulate fistula with lacrimal probe, small feeding tube or pads foley - allow to draw vagina to Introits and facilitate vaginal dissection
- vaginal epithelium excised around fistula then vaginal epithelium flaps are raised and removed in wide circle 2-3cm around fistula
- multiple layers of absorbable suture placed without tension
- ensure water tight - Methylin blue and cystoscopy
- IDC 7-14 days
- CT IVP or cystogram prior to formal TOV

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22
Q

Outline physiological changes to red cell mass and total blood volume in pregnancy

A

red cell mass increases ~20%
total blood volume increases ~50%
dilatational effect as volume > red cell mass

increased demands on iron, B12 and folate
maternal erythropoiesis may struggle to keep up with demands

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23
Q

Types of anaemia in terms of MCV and MCH and example of each

A

Microcytic
o Normochromic: thalassemia
o Hypochromic: iron deficiency anaemia

Normocytic
o Normochromic: haemolytic eg mechanical heart valve
o Hypochromic: CKD, chronic disease

Macrocytic
o Megaloblastic: B12 or folate deficiency (normochromic)
o Non megaloblastic: alcohol, cirrhosis
o Hypochromic: retrics

Haemolytic: sickle cell

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24
Q

maternal and fetal risks of anaemia

A

maternal
- PPH, increased pRBC –> ab
- fatigue
- SOB
- presyncope/syncope –> injury
- increased infection
PTB
- Heart failure

fetal
- LBW
- PTB
- NICU
- fetal anaemia
- stillbirth
- neurodevelopment sequelae

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25
options for treatment of IDA
History o Exclude pvb o Fhx/personal hx o Previous treatments trialled and response o Allergies o Review diet and intake o Exclude hyperemesis sx o PMedhx: coeliac/absorption issues o Psurghx: bariatric surgery Examination o Signs of anaemia: conjunctival pallor, HR Ix o Exclude concurrent thalassemia or alternative cause, iron levels Management o depends on gestation, previous response, symptoms, allergies - do nothing - diet - PO iron with vitamin C  Instructions: do not take with milk products, mindful of constipation (advise to take 2-3L water, fibre in diet, fibre supplements, over the counter apperients eg Movicol and lactulose as required)  Advantages: cheap, non invasive, can continue postpartum, minimal risks and side effects, simple, does not require hospital, accessible  Disadvantage: takes a longer time to increase stores – not ideal if 38 weeks pregnant and about to have a LSCS etc , may not be absorbed well during pregnancy with increased progesterone, side effects – nausea, constipation, requires adherence, limited efficacy – may be insufficient - IV iron infusion  Instruction: done as inpatient, must meet criteria at hospital – Hb <103, ferritin <30  meets criteria  Advantages: minimally invasive – requires IVC, covered by medicare, less constipating, more rapid correction therefore can be used closer to due date, better tolerated, effective even with absorption issues, only 1-2 doses, can be used for those with poor response or unable to tolerate PO iron  Risks: anaphylaxis, staining, cost, requires hospital admission, access, time consuming - pRBC  instructions: done as inpatient, rapid reversal  advantages: rapid  risks: antibodies, costly to healthcare system, access, availability, anaphylactoid reactions, transfusion reactions, antibodies
26
What are the primary objective of the PPROMPT trial?
Establish whether immediate birth in singleton pregnancies with ROM close to term reduces neonatal infection without increasing other morbidity
27
PPROMPT trial
multi-centre multinational RCT, large sample size good generalisability randomised to expectant management vs induction of labour when PPROM K34-36+6 * primary outcome: neonatal sepsis * secondary: neonatal composite – sepsis, NICU + maternal composite: APH, PPH, sepsis, intrapartum fever, IV ABX, MOD outcomes immediate management group  increased respiratory distress  increased mechanical ventilation  more time in SCN expectant  increased APH + PPH  increased intrapartum fever  increased PP abx use  longer hospital stay  reduced rates of CS no difference in  neonatal sepsis  composite of neonatal outcomes
28
What are the most common pathogens causing chorioamnionitis?
GBS E coli enterococcus STI: mycoplasma, chlamydia, gonorrhea gardnerella ureaplasma polymicrobia rare: candida, GAS
29
risks of chorio
Maternal o Fever o IV abx o Endometritis o Sepsis o Prolonged hospital admission o Morbidity related to sepsis o PPH o RDS o Death Fetal o Death o Cerebral palsy o Hypoxia o Pneumonia o Sepsis o Prolonged admission o NICU o I/V o Antibiotic exposure o Pneumonia o Menigitis
30
What are the risk factors for FGR
* Maternal: APLS, PET, bariatric surgery, chronic conditions eg CKD, DM, hx of SGA/IUFD/PTB/placental dysfunction, substances eg smoking, methamphetamines, IVF, AMA * Fetal: chromosomal abnormalities, infection eg CMV or syphilis, echogenic bowel * Placental: low PAPP-A, multiple pregnancy, uterine anomaly, single uterine artery
31
delivery criteria - Delphi
When AEDF or REDF in UA – monitor every 2-3 days unless delivery indicated K26 – 31+6: deliver if DV a wave at or below baseline K32-33+6: delivery if UA-REDF >K34: delivery if UA – AEDF K36-37: delivery if UA-PI >95th or AC/EFW <3% K38-39: deliver if signs fo cerebral redistribution or any other features of FGR any gestation: maternal indication, BPP, CTG
32
screening for dependence
T - tolerance A - asked to stop and got annoyed at the person C - cut down - attempt to cut down E - eye opener
33
Multip K29. Admitted for management of opoid dependency. Describe and justify management goals during admission
Hx Exam Investigations o BBV o Antenatal screening o Growth and wellbeing o UDS with consent Aims of admission o Link into services – drug and alcohol, MDT including SW + high risk obstetrics o Maternal health o Fetal wellbeing o Establish continuity of care and rapport for ongoing cares o Safety – exclude BBV, IPV, mental health, harms Management o Patient centred approach o Identify patient goals o MDT o Assistance from CL psychiatry if concurrent mental health disorder and drug and alcohol services to switch to methadone/ long acting injectable buprenorphine program o Manage acute withdrawal – benzos, antiemetics, hydration o Methadone is to be continued throughout pregnancy o Link into services for long term  Social work – stable housing, supports,  Drug and alcohol services o High risk clinic – SB, IUGR, SGA o Counselling re risks of substance o Screen for harms – ensure no physical harm from substance use including screening for BBV and antibodies o Growth and wellbeing – potential harm to fetus including LBW o Advice paeds – baby at risk of withdrawal when born o Child safety: unborn child at risk alert to be placed o Breastfeeding plan  Yes  NAS scoring  Safety plan re pumping  Increased pain/lack of sleep – laise with MDT - ?increased dose  7 day admission for scoring  Risks PND  Contraception  Constipation due to opioids o Anasthetics for pain plan post MOD
34
VBAC counselling
patient centred approach shared decision making determine patient goals, ideas, concerns and expectations review previous notes - determine incision type - determine length of time since previous CS - exclude contraindications to VBAC eg angle extension, T/J incision, classical incision, praaevia, PAS - indication for previous CS: FTP, breech, FD pre pregnancy weight discuss risks and benefits of both determine future pregnancy plans and motivations review Obs and medical hx consider VBAC calculator management plan VBAC vs CS discuss Intrapartum management explain additional risks of CS in labour
35
list fetal risks VBAC vs CS
VBAC o Birth trauma – shoulder dystocia, fractures o Increased stillbirth – more to do with the timing of delivery o Intrapartum fetal death or neonatal death o Ris of HIE o Increased risk of perinatal mortality CS o Lower initiation of BF o Fetal injury – often superficial laceration o Increased risk of TTN, surfactant deficiency and pulmonary hypertension – although after K40 there is no difference in incidence
36
List maternal risks of VBAC vs CS
VBAC o 20-40% Risk of emergency CS with higher morbidity associated o Uterine rupture  1:7 severe neonatal and maternal morbidirty associated o OASI o ~40% risk of instrumental CS o Longer recovery o Higher VTE o Recommendation for repeat CS in future pregnancies with additional morbidity associated o Increased risk of PAS o Surgical complications – bleeding, infection, damage to other strucures, hysterectomy o Increased risk of complication in future pregnancies
37
Clinical signs of uterine rupture
* CTG abnormality * Loss of station/presenting part * PVB * Consistent pain at incision – pain in between tightenings * Haemodynamic instability * Chest pain, shortness of breath, shoulder tip pain * Cessation or alteration of contractions * Change in abdominal contour
38
Intrapartum VBAC recommendations
* Patient centred care to facilitate shared decision making * If confirm that patient is in spontaneous labour recommend admission * Introduce self to patient, confirm desires for VBAC vs CS o Review on arrival o TOLAC – high risk o Review and assess desire to continue, dsicuss epidural * Notify SMO and anasthetics, paeds  high risk patient * 1:1 midwifery care * IVC + Bloods  access if emergency + potential to cross match blood if required * CTG  allow for fetal monitoring, if fetal distress if a potential early indicator of uterine rupture, consider FSE if abdominal monitoring not adequate provided no contraindications * VE within 1 hour of presentation then 4 hourly VEs until 7cm then 2 hourly  ensure appropriate diltation o Highest risk of rupture is intrapartum o Labour dystocia can be sign of rupture * Risk of PPH, placenta related complications * Clear fluid intake rather then full diet – high risk of section, risk of aspiration * Anasthetic review and consideration of epidural * Psychosocial support
39
define primary amenorrhea
* No menarche over 15-16yo * No menarche within 3 years of breast development (thelarche) * No breast development by 13yo * No menarche by 14 if hirsutism
40
what is the incidence of primary amenorrhea
0.1-0.3%
41
classify types of primary amenorrhea and provide examples
* Hypogonadotrophic hypogonadism – HPO axis dysfunction/ central cause - Stress - Anorexia - Exercise - Kallman’s - Pituitary - constitutional - hyperPRL - CNS tumour - chronic illness * Hypergonadotrophic hypogonadism – gonadal dysfunction o Turners o POF o Swyers o Galactosemia o Chemo/radiation * Obstruction o Imperforate hymen * Absent uterus o MRKH o CAIS * Pregnancy
42
What investigations would you order for primary amenorrhea and justify
Urine: HCG  exclude pregnancy Bloods o Hormone profile: FSH, LH, estradiol, testosterone ==> determine whether a hypogonadoatrophic vs hyper and the functional production by the ovary o PRL – exclude a hyperprolactinoma o TFT – exclude endocrine cause o HCG – exclude pregnancy o PCOS bloods – consideration if features on hx – DHEAS, SHBG, FAI o Karyotype - determine genetic karyotype o Fragile x premutation screening o CAH – 17 OHP , 21-OH Imaging o USS pelvis – determine if uturus present, exclude mullerian anomalies o Bone density o XR bone wrist – determine bone age Special: GnRH test
43
What are some unique challenges faced by people who have chromosomal abnormalities and suffer from primary amenorrhea? Organise your answer using biopsychosocial model
--> HEADS establish a therapeutic relationship --> goals, Ideas, concerns and expectation Biological o Osteoporosis prevention – requirement for oestrogen for bone health and prevention of fractures, important time in life to lay down bone density o Cardioprotective effects of oestrogen o Physical transition to full reproductive maturation o Fertility o Removal of streak gonads due to malignancy risk Psychological o Gender identity o Body image o Sexual health – dilators, estrogen replacement, physio Social o Feeling isolated, support groups
44
define dysfunctional uterine bleeding
bleeding that deviates from the normal menstrual patterns in terms of frequency, duration and volume
45
pipelle vs HDC
Pipelle o Easy, acceptable, accessible o Lower cost, low risk of perforation o Samples ~50% of endometrium o Limited if polyp or focal lesion o Will miss 2% of endometrial hyperplasia o PPV >99% o Sensitivity 70-80% some pathology HD+C o Increased risks – GA, perforation o Visualise entire endometrium o Better to target focal lesion or polyp o Higher diagnostic accuracy o More likely to up stage (40% of endometrial hyperplasia have concurrent endometrial cancer) o ~90% sensitivity when combined with diagnostic procedure o Diagnostic and therapeutic o Visualisation o Perf, infection, cost o More invasive but accepted
46
Endometrial sampling shows benign proliferative phase endometrium – as per the FIGO classification what category would this woman belong to?
Benign proliferative phase endometrium suggests an oestrogen dominant environment  suggestive that she is in the ovulatory functional cause of AUB This could represent PCOS, thyroid or pituitary/hypothalamus Could also represent iatrogenic with exogenous oestrogen and with no opposing
47
discuss endometrial ablation
Minimally invasive first or second generation Endometrium destroyed to basal layer Pre op sampling recommended [x] Needs contraception o Mirena improves efficacy o Bilateral salpingectomy – 10% risk post ablation of tubal sterilisation syndrome, increased surgical risks and operating time 20% failure, 40% amenorrhea, 40% reduction Risks of pregnancy: IUGR< uterine rupture PTB, miscarriage, ectopic, abnormal placentation Contraindications: endometrial hyperplasia or cancer Caution: lynch, risk factors for endometrial hyperplasia/cancer, requirement for sampling Factors associated with failure: large cavity, adenomyosis, previous CS, retro/ante flexed, SM fibroid >3cm
48
On examination what is suggestive of lichen sclerosis?
* Figure 8 distribution * Loss of labial architecture – loss of distinction between labia, narrowing of introitus * Fissures * Excoriation * White lichenoid plaques * Vulval atrophy and thinning * Vaginal mucosa spared
49
What histological features are suggestive of lichen sclerosis
* Hyperkeratosis and atrophy of epidermis * Hylanisation of dermis * Lymphcytic invasion of basal layer * Loss of rete ridge
50
What is the aterial supply of the vulva and perineum
Internal (from internal iliac) and external femoral) pudenal artery
51
What is the innervation of the vulva
* Anterior: ilioinguinal, genital branch of genitofemoral * Posterior: pudenal, posterior cutaneous nerve of the tight * Clitoris + vestibule – PSNS – cavernous
52
How consent for BTL
Consent o Capacity o Not under duress/voluntary o Understanding o Retention of information, about to relay consent o Current Risks o Increased surgical time o Increased risk of complications eg bleeding, damage to other structures o May not be able to compelte salpingectomy if scarring or adhesions  3 previous CS o Very small risk of failure and if does conceive then risk of ectopic o Difficulty of reversal o Increased risk of POI Benefits o Risk reduction for ovarian cancer o Already having operation so does not require additional operation o Minimal risk of surgical complications Alternatives o Mirena – reduces HMB and dysmenorrhea o POP if breastfeeding o Vasectomy – LA, less risk, not intraabdominal Describe procedure o Aim to perform complete salpingectomy – meaning remove entire tube  Ovarian cancer, histo o If unable to do complete salpingectomy  still aim to remove fimbrial end, interrupt/diathermy/tie o Shared decision making regarding Post operative recovery Wait time for surgery, alternative reliable contraception while waiting
53
Inquires after lactational amaenorrhe – what criteria need to be fulfilled for LAM
* Amenorrhea * <6/12 postpartum * Continuous breastfeeding not interrupted, no longer break then 4 hours (means baby does not sleep through), no solids added into diet, not pumping
54
bladder dome injury
Identify injury Call for help – O+G SMO, urology o If large defect, multiple defects, close to trigome or other complication – urology consult Notify anasthetics + OT staff o Different tray, equipment o Increased time o Disposition to change to inpatient Evaluate injury --> ? need to convert to open * If small defect  consider repair or IDC for 5-7 days * If 1-2cm – slingle layer closure with 3-0 vicryl continuous * >2cm – two layer closure with 3-0 vicryl, second layer does not involve mucosa – aiming water tight therefore check with cystoscopy Check with cystoscopy at end – other injuries, ureteric jets IDC in situ for 14 days – voiding cystogram prior to IDC removal then TOV Cystoscopy Complete operation vs abandon for just repair Risk management Documentation Debrief
55
composition of complete vs parital molar pregnancy – histo and genetics
PARTIAL genetics - triploid - 2x sperm or 1x sperm that divides - single ovum - contains maternal genetics therefore p57 histo - some fetal maternal - tissue, vessels - focal - less florid hydropic villi - focal/minimal throphoblastic proliferation - p57 positive COMPLETE genetics - diploid - 2x sperm or 1x sperm that divides in empty ovum histo - diffuse hydropic villi - trophoblastic proliferation - atypia - no p57
56
WHO prognostic GTN
* Age >40 * Antecent pregnancy * Time since incident pregnancy * Mets – number * Mets – sites * Size of tumour * Previous methotrexate / failed chemo * Baseline HCG >100,000
57
what are the benefits of MgSO4 for neuroprotection
2x Cochrane reduction in CP RR 0.71 NNT = ~60 reduction in CP and death RR 0.87 reduction in IVH reduction in gross motor dysfunction RR 0.61 reduction in neurodevelopment outcomes increased maternal side effects no significant paediatric mortality or other neurological impairments in the first few years need to assess outcomes in older children
58
what are the common side effects of MgSO4
nausea vomiting flushing feeling generally unwell CTG changes
59
what are the signs of magnesium toxicity
3.8 - 5.0 - side effects, flushing, nausea, generally unwell, warmth, slurring >5: loss of deep tendon reflexes >6: resp depression >6.3: resp arrest >12 cardiac arrest other signs - BP <15mmhg under baseline - UO <100ml/4 hours
60
what is the antidote for magnesium sulphate toxicity
10% calcium gluconate in 10mL slow IV stop infusion MET - O2 ECG Bloods
61
thalassemia a-/a- both mother and father. what are the possible genotypes, risk of the genotype occurring and implication on the pregnancy
alpha thalassemia is an autosomal recessive disease with a complex inheritance pattern gene on chr 16 mother could be alpha0 and therefore could have mild anaemia baby - 2x defective genes (50%): alpha thal triat --> generally normal Hb, sometimes anaemia and reduced MCV but no real implications - no defective genes --> 25% - 3x defective genes-: HbH - moderate to severe microcytic anaemia, 70% iron overload complications, severe haemolytic anaemia (tetramer of beta globulin HbH) - 4x defective genes: Hb Barts - tetramer of gamma globulin - severe anaemia --> hydrops --> death
62
what is the antenatal management of someone with thalassemia
determine type of thalassemia - perform Hb electrophoresis - consider molecular testing to termite if alpha treat - location of defective genes (cis or trans), has implications for inheritance arrange partner testing - electrophoresis - if carrier or has disease refer to genetics pre conception - reduced fertility - counselling, testing --> genetic referral - chelation is contraindicated in pregnancy - screen and optimise - DM, thyroid, cardiac, liver - no parenteral iron --> overload - PO iron and folate antenatal - MDT - baseline Ix: FBC, electrophoresis, iron studies, B12, folate, BBV - screen: TFT and GTT - refer to cardiologist: ECG, ECHO, cardiac MRI - liver USS: cholestasis, cirrhosis - bone density and vitamin D - IV iron avoided - worsens overload - PO iron and foliate +/- pRBC - baby --> screening to determine what genetic make up is - early USS, tertiary morph, serial growth
63
what are the options for testing and diagnosis a fetal with thalassemia
64
causes for no test NIPT
low fetal fraction - small placenta --> miscarriage, incorrect dates, fetal chromosomal anomaly/trisomy obesity faulty assay LBWH metformin placental mosaicism exercising just pior haemoglobinopathies
65
why do we not recommend universal genetic carrier screening
RANZCOG does not recommend universal genetic carrier screening but does recommend 3 specific genes that are high incidence in australian/nz population limited clinical utility - targeted for those at high risk - high number of population carries a recessive gene --> high anxiety if screen positive but unlikely to have partner have same - may not change medical management or outcome - low carrier rates psychological and ethical concerns - anxiety - confusion - medical insurance resource and cost - healthcare resources are finite - cost effectiveness - access - exacerbate disparities variations of unknown significance high at this stage therefore may screen positive but don't know what it means in practice lack of consensus of what to include counselling prior to test
66
what things can be done to prevent perineal injury and their level of evidence
antenatal - perineal massage overall reduction in trauma requiring suturing NNTB = 15, less likely to have episiotomy but no difference in incidence of tears (level 1) - engagement with pelvic floor physiology about relaxation of pelvic floor - combination reduction in OASI - case selective - elective vs for selective women eg previous OASI - level 3 Intrapartum - Intrapartum perineal massage - birthing position (all 4x kneeling, lateral or standing) - warm compresses RR 0.48 (level 1) - selective episiotomy eg for instrumentals (level 1) - perineal protection techniques level 3 - use of perineal care bundle - reduction in OASI reduce risk factors: no excessive GWG, screen GDM, identify LGA
67
patient needs an instrumental delivery - what can you do to reduce OASI
- Intrapartum perineal massage - warm compresses RR 0.48 (level 1) - selective episiotomy eg for instrumentals (level 1) --> reduction in OASI with VAB 16% and with FAB 24% --> correct technique at 60degrees with contraction from midline at crowning - perineal protection techniques level 3 - use of perineal care bundle - reduction in OASI
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patient has sustained a previous OASI - how do you counsel her re next MOD
shared decision making risk of recurrence 4-8% Hx exam no high level evidence for recommendation for optimal MOD - consider: extent of previous injury, functional status, extent of anatomical and functional defects + anal manometry - risks vs ebnefits - in asx women SVB following OASI does not increase risk of subsequent sx but those with anal incontience likely to worsen sx - australian linkage study OASI in P1 --> no more likely to have another severe tear in subsequent then women who did not stress issues at start if another insult then risk of anal incontnence long term indications to offer cs - current sx of anal incontinence - psychological or sexual dusfunction - previous 4th (no hard and fast) - more then 1 OASI - endoanal defect evidence on USS - low anorectal manometric pressures - maternal request no role for prophylactic episiotomy
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post op cares after OASI
A - apperients A - analgesia A - Abx B - bladder - IDC P - physio + psychosocial supports F - follow up (debrief and 6/52 for symptoms) and red flags (higher incidence of wound infection and breakdown) risk managements
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surgical principles of OASI repair
Identification - PR recommended, explain reasoning behind performing, consent - 2 clinicians reviewing perineum - increased detection explain diagnosis to patient shared decision making, written consent note risk of PPH and management required repair - transfer to OT (lighting, positioning, equipment) - IV Abx (evidence that cef reduces post op infection) - senior involvement - analgesia/epidural/spinal GA - prep - betadine - EUA with assessment of trauma confirm degree - mobilisation of external anal sphincter and identification - visualisation, may be retracted - protection of sterile field - sutures (3-0 PDS for internal sphincter and external sphincter but 3-0 vicryl for anal mucosa) --> overlapping - no difference in perineal pain, dyspareunia, flatus incontinence at 3 years but improved faecal urgency and anal incontiencence at 1 year - perineal body and muscles 2/0 vicryl rapide - continuous interrupted - paraurethral or paraclitoral may consider 3-0 - avoid figure of 8 sutures - tissue ischema - bury knots beneath perineal muscles to reduce migration, cut short - PR confirm no sutures where should not be (fistula risk) - confirm haemostats post operative plan
71
what are the long term and short term complications of OASI
short term - perineal pain, oedema, brusiing - urinary retention - infection - wound breakdown - incontinence/defecation issues long term - fistula - dyspareunia - incontience - psychosexual / psychological - chronic perineal pain
72
risk factors for OASI
maternal: asian, nullip, previous OASI baby: LGA >4000g, OP labour: prolonged second stage, instrumental, shoulder dystocia, midline episiotomy
73
what is a type 3 FGM
FGM is the non medically indicated alteration of external female genitals - partial or full removal of the external genitalia or other injury to female genitals for non medical benefit 0.4% Australian population type 3 = reduction in the Introits/vaginal orifce (+/- urethral meatus) with creation of covering seal by cutting and apposing labia majora +/- minora +/- removal of clitoris and prepuce
74
what procedure you offer her for fgm and describe the principles underlying this
sensitive trauma informed culturally appropriate +/- interpreter written consent risks of FGM: obstructed labour, CS, PPH, OASI risks of FGM outside of labour: dyspareunia, UTI, poor CST uptake de-infibulation = a minor surgical procedure carried out by a trained medical professional to re open the vaginal Introits for FGM - midline incision across the scar that covers the vaginal Introits until the external urethral meatus and eventually clitoris are visible - cut edges are sutured apart to allow Introits to stay open aim for antenatal ideally second trimester (as reduces risk of UTI/infection and therefore PTB/PPTOM) explain risks of procedure explain benefits of procedure can be done Intrapartum must discuss anatomical and physiological changes that would happen after procedure eg altered urination, increased vaginal discharge, change in labial/vulval appearance, sexual experience discuss post op cares ensure aware reinfibulation is illegal in australia
75
patient declines deinfibulation antenatally. now presents Intrapartum
can still be offered - reduces CS and PPH risk culturally sensitive, trauma informed, MDT autonomy, respect higher risk of PPH, obstructed labour and CS discuss risks of FGM and labour - recommence IVC + G/H - routine episiotomy not recommended but may be indicated due to scarring and lack of skin elasticity - difficult examinations, IDC insertion, Intrapartum procedures - increased risk of CS and PPH - FGM is not an indication for CS aim to deinfibulate in first stage of labour with consent and analgesia eg epidural document skilled accoucheur +/- interpreter postpartum - monitor perineal swelling and urinary obstruction - recommend delaying intercourse until wounds healed - reinfibuation is illegal - 6/52 PP follow up
76
discuss and counsel the NIPT and its use
why: take hx, family hx including partners Who: anyone when: >K10 what: screening test, cfDNA written information principles of consent risks: VUS, sensitivity, specificity on extended, implications of management, costs benefits: very good for T21/18/13 alternatives addition of USS
77
what is the sensitivity and specificity for compression doppler uss
sensitivity 97% specificity 95-99%
78
compare CTPA and V/Q Scan - benefits and advantages
CTPA - more likely to give answer - sensitivity for central pe - higher radiation to breasts V/Q - lower radiation to breasts - higher childhood malignancy (low) - hard when abnormalities on CXR
79
benefits of deinfibulation
allows ve reduces risk of emergency trauma or in labour deinfibulation reduces prolonged, obstructed labour, CS reduces PPH 1. obstructed labour 2. prevent CS 3. PPH prevent haematocolpos UTI dyspareunia reducing scarring at Introits -
80
Discuss 2 emergency contraception methods , mechanism in preventing pregnancy, window of time of use, failure rate
Copper IUD - MOA: impact on sperm, foreign body - hostile environment preventing fertilisation and implantation - within 5 days - failure <1% Ulipristal - delays ovulation - 120 hours - failure 1.4% levongestrel 75mg - impacted by BMI >30 2 doses - 72 hours (24hours 90%, <50% over 48 hours) to be taken as soon as possible - failure ~2.2%
81
Ix and justify for IMB
HCG bloods - FBC - serum HCG swabs - STI - HVS - co test imaging - USS pelvis consider colp
82
why's to prevent perforation during dilatation
pre operative - identify those at risk: post menopausal women, extremes of age - vaginal oestrogen pre procedure can then be given misoprostol - review imaging intra op - VE ensure flexion - hydrodilatation - keep bladder full - keep midline - USS guided - reverse dilatation
83
2 main chemo drugs for ovarian cancer and their side effects
carboplatin - ear/renal/bone marrow placlitexal - neurotoxic 80% success
84
ovarian cancer risk factors
Fhx estrogen exposure increasing
85
why is LMWH superior to unfractionated heparin
less heparin incited thrombocytopenia and oestroporosis injection rather then infusion at home easy accessible acceotable SE: rash, discomfort at injection site
86
what are the complications of transvaginal mesh
mesh exposure higher combined re operation rates increased bladder injury SUIT increased rates of prolapse at other vaginal sites chronic pain
87
what are 3 benefits and 3 risks of sacrocolpopexy
highest success rate 76-100% gold standard most durable using type 1 mesh/grafts increased bleeding, post op pain, hospital stay, recovery increased risk of visceral injury - cystotomy 3%, enterotomy 1.6% involves mesh and exposure of mesh risks
88
management of LS once confirmed on biopsy
explain diagnosis - chronic likely autoimmune condition - not due to poor vulval hygiene vulval hygiene - cotton undies - air out when possible - no tight clothes - no soaps or cleaning products - no douching - avoid triggers medical management - high potency steroids (ointment) clobetasol or diprosone - can add in vaginal oestrogen - second line: topical taco or intralesion steroid injection follow up - review in 6 weeks for symptoms - review 6 monthly to ensure no concerning features of progression to dVIN
89
when refer a VIN to GONC
midline important anatomy involved wide spread extensive multifocal previous surgery or radiation recurrent failed first treatment
90
justify considering a manual rotation
timing, no distress, nullip reduces requirement for instrumental delivery and reduces need for rotational instrumentals OP position increases risk of failed instrumental, OASI and fetal injury analgesia - minimal discomfort no signs of obstruction shared decision making
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assessment prior to an instrumental
assessment - adequate contractions - no signs of obstruction - abdo palpa for size of foetus and <1/5 palpable abdominally - fetal and maternal wellbeing - vertex - dilation - membranes ruptured - ve: at spines or lower, exact position determined, <2+ caput and moulding, pelvis deemed adequate indications for AVB - maternal exhaution - fetal distress - prolonged second stage - contraindications to prolonged second stage of valsalva preparation - explain indication, alterantives - consent - analgesia - empty bladder - aseptic alternatives - if no fetal or maternal concerns could allow further time to descent and rotation - risks of maternal exhaustion and fetal distress - CS discuss risks/benefits of AVB - risks- maternal (OASI, PPH, failure, conversion to LSCS), fetal (injury) - benefits: achieve SVB, if distress then timely delivery - prepare for emergencies - SD and PPH preparation of staff - experienced operator and supervioion - bed, lighting, positioning - equipment - back up plan - anticipate copletcations - paeds
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what are the risk factors for failed AVB
maternal: BMI >30, short stature fetal: EFW >4kg or clinically big, OP, head circumference >95% Exam: mid cavity or >1/5 palpable abdominally
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contraindications to AVB
fetal bleeding disorder predisposition to fracture where maternal consent refused fetal station >spines >1/5 head palpable abdominally VAB: face or
94
define DV and what are the types
pattern of behaviour in any relationship that is used to gain or maintain power/control over an intimate partner physical, financial, coercive, emotional
95
risk factors for PAS
CS LLP anterior AMA multiparty previous uterine surgery
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management of PAS
antenatal - optimise Hb - further imaging - MDT referral - discuss management options - recommend CS hysterectomy - timing of delivery K34-36+6 depending on guideline delivery - risks: massive obstetric haemorrhage, damage to lower genital tract, GA - tertiary unit - MDT - cell saver - 2x IVC/art line - cross match and blood bank available - lithotomy with graduated drapes to assess vaginal bleeding - ICU post op surgery - experienced operator - VML or extended transverdse - total hysterectomy + BS aimed for - baby delivered through incision away from placenta and closed - no prophylactic oxytocin but given TXA - proceed to hysterectomy post op - ICU - drain - watch for intraabdo bleeding - average EBL 3L - replacement - observe for complications eg fluid overload, renal/liver failure, infection, unrecognised injury, pulmonary oedema, DIC, Sheehan syndrome - BF - psych - VTEp - GOPD 6/52
97
how to distinguish CAIS and MRKH
CAIS: 26XY, testosterone increased MRKH: 46XX, female range testosterone
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Ddx for 4 weeks post TLH + BSO for PVB
vault haematoma infection granulation tissue vault dehiscence trauma
99
how does HPV evade the immune system
1. HPV infection - microabrasions --> infect epithelial cells, replicates within cells, does not cause inflammation therefore evade 2. APC - dendritic and langerhan cells pick up HPV --> travel to LN and present to naive T cells via MHC molecules 3. T cell activation - CD4 helper T cells are activated - B cells - HPV specific antibodies - CD8 cytotoxic T cells - recognise and kill HPV affected cells MHC 1 4. B cells - differentiate into plasma cells secrete Ab to neutralise free virus particles 5. memory formation
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how does HPV replicate within cervical cells
E1+E2 binds to epithelial cells takes over host machinery E6 --> p53 E7 --> pRB tumour suppressor cells --> controls repplication new virus particles assembled in upper layers of epithelium and virus is released when epithelium sheds restricted to the cervical epithelium with no viraemia
101
define adenomyosis
glands and supporting structure of endometrium found in crypts in myometrium therefore tissue breast down each menstrual cycle causing painful and heavy periods increased blood supply and surface area increased inflammatory response and increased PG bulky due to myometrial hyperplasia - structural distortion
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USS features of adenomyosis
asymmetrical uterine cavity thickening anterior or posterior myometrial wall thicker myometrial texture heterogenecity small myometrial hypo echoic cysts enlarged uterus globally striated projections from endometrium to myometrium ill-defined border heterogenous myometrium diffuse vascular colour
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explain 2 medical options available for adenomyosis
Mirena - decidualisation of endometrium - reduces HMB 90% at 12 months TXA + NSAID - reduce 60%
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contraindications to an endometrial ablation
future fertility distorted uterine cavity high risk for endometrial cancer Fhx Lynch endometrial hyerplasia or cancer tamoxifen high risk failure: adenomyosis, grandmultiparity, large cavity size, previous CS
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modes of induction - MOA - CI - pro - con
PG - MOA: direct stimulation of myometrial contractions, biophysical changes - CI: PVB, contracting, abnormal CTG, previous uterine scar - pro: reduced induction time, increased rates of SVB at 24 hours, increased successful IOL - con: hysterstimulation, uterine rupture, abruption, CTG abnormalities Balloon - MOA: mechanical dictation and effacement, can cause release of PG - CI: PVB, abnormal CTG, high head caution, PPROM - Pro: easily removed - con: malpresentation, PVB
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EOGBS
pneumonia sepsis meningitis incidence 0.4 per 1000 (reduced significantly since additional of antibiotics as Abu reduce transmission by 80%) mortality in term 1-3%, 20-30% in preterm (previously as high as 55% for both)
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LOGBS
meningitis sepsis
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indications for IAP with risk factors
febrile ROM >18 hours previous baby affected EOGBS screening urine pregnancy - urine, swab
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why use a risk based screening over universal screening for GBS
transient bacteria - over treatment of some who test positive ~20% - undertrement of those who are negative at time of swab - aiming for 3-5 weeks prior - 40% population has cost effectiveness low rates of EOGBS importance of sticking to a protocol 40% have no risk factors
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how to take a GBS swab
vaginal 1-2cm and perianal or anorectal 1cm - increased detection by 25% document allergy as high resistance rates and need sensitivities if penicillin allergy document GBS screning media rich sent to lab immediately, if not processed immediately then kept according to protocol in appropriate conditions before digit exam or lubricants timing around delivery 3-5 weeks prior
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GBS PPROM >K34
ranzcog guidelines recommend Ill at K34 if GBS positive - local guideliens re antibiotics and gestation - reduces risk of EOGBS with mortality rate 20-30% - higher risk of NICU/SCN, RDS - steroid loading - monitor for signs of infection
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Cochrane review IOL >K37
Mum - probably fewer CS - little or no difference in AVB - little or no difference to perineal trauma, PPH, breastfeeding at discharge - no increase in maternal morbidity, mortality or infection Bub - lower NICU admission - lower RDS, O2 requirements, IVH - lower stillbirths - reduced perinatal deaths but NNTB = 554 - higher Apgar scores - no difference HIE or neonatal trauma
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compare ARM with synto immediately vs 2 hours
less likely to receive oxytocin more likely to require Abx or CS
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3 most important risk factors for shoulder dystocia
macrosomia 7x previous shoulder dystocia 7x DM or GDM - 2-4x
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explain the mechanism of McRoberts
straightens the lumbosacral curve, rotates the maternal pelvis towards the mothers head and increased the relative AP diameter of the pelvic inlet --> facilitates descent of posterior shoulder below sacral promontory and by flexing the fetal shoulder towards the anterior shoulder dislodges reduces angle of inclination of pelvis - plane of pelvic inlet is brought perpendicular to expulsion forces gentle traction no pushing
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explain the mechanism of suprapubic pressure
pressure on fetal back in downward and lateral direction just above pubic symphsis reduce the fetal bisacromial diameter and rotates the anterior shoulder into wider oblique pelvic diameter
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mechanism of Erbs palsy
C5.6 excessive traction on neck --> shoulder under pubic bone --> stretches on C5/6 excessive downward traction rocking, lateral or rapidly applied traction posterior axillary sling
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other neuro complications of a SD
klumpsie flail arm, horners HIE encephalopathy fractures CP
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risk factors for PET
age obesity Fhx medical: chronic HTN, renal dx, DM, APLS multiple pregnancy smoking IVF
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risks of PET
abruption stroke eclampsia fetal compomise multi organ disease HELLP
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CLASP trial
reduces PET 18% reduces PTB 9% reduces NND 14% reduces SGA 16%
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what is the mechanism of action of MgSO4
NMDA receptor antagonists --> stabilises neurons contraindications: renal disease, hepatic disease, MG, anaphylaxis
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what factors reduce chance of successful VBAC
maternal: AMA, BMI >30, DM, HTN fetal: >K41, malpresentation, macrosomia labour: induction previous: >1CS, CS for dystocia
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discuss risks of VBAC
maternal - uterine rupture 1:200: haemorrhage, hysterectomy, emergency OT - CS in labour (20-40% chance): increased risk of complications eg wound infection, endometritis, bladder or ureteric injury, injury to baby, pain, pph - risks of vaginal delivery: OASI, PPH, instrumental (40%) fetal - if rupture: risk of morbidity and mortality 1:7, HIE, death - if vaginal delivery: SD, birth trauma, increased stillbirth, increased Intrapartum death or NND, increased perinatal mortality, HIE
125
what are the benefits of a VBAC
maternal - 60-80% success - less maternal morbidity for this and future pregnancies - avoid major surgery and need for repeat CS - early mobilisation - shorter admission - reduced VTE - higher satisfaction - faster recovery fetal - improved gut microbiome ?reduce allergies - reduce transient resp morbidity - increased fetal/maternal bonding --> BF
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signs of uterine rupture
peak incidence 4-5cm, 18% second stage, 8% after delivery vaginal bleeding constant pain haemodynamic instability cessation or alteration of uterine contractivility loss of station or presenting part change in abdo contour chest pain/syncope/SOB tenderness over wound CTG
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risk of fetal loss with appendicitis
10-20% of untreated 6-21% if perforated appneidicitis
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discuss risks of surgery during pregnancy
pre op - more difficult diagnosis - limited imaging intra op - more difficult entry given gravid uterus - more difficult operation given gravid uterus - risk of injury to gravid uterus with port placement - anaesthetic risk: more difficult intubation given oedema, reflux and relaxation of lower oesophageal sphincter, increased risk of miscarriage - positioning - left lateral tilt 15-30 degrees post op - lower birth weight, low Apgar, PTB - longer admission NND - VTE prophylaxis
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miscarriage - patient prefers expectant management how would you counsel her?
empathies expressed validate experience trauma informed, respectful, kind, recognise grief confirm diagnosis and pmedhx confirm suitability for expectant - lives close to hospital, can follow red flag advice, haemodynamically stable, no bleeding disorders explain 3 options: expectant, medical and surgical discuss benefits and risks of each expectant: often miscarriage occurs spontaneously with onset of period like cramping, vagnal bleeding and passage of tissue success rates of expectant - 80% incomplete at D14 - 60% of missed at D14 - success rate lower if prolonged loss without exposure - failure up to 50% benefits - avoid surgery and medications contraindications: GTD, haemodynamic instability, IUD, increased haemorrhage risk, infection risks: unpredictable, more days bleeding, higher rates of hospital admission and surgery unplanned red flag advice follow up - no limit on how long before call failed - success reduces with time - recommend NSAID and paracetamol for pain - HCG at D1 and 8 --> repeat USS if drop <90% patient choice, shared decision makings espect autonomy bereavement services EPS follow up psychological suoports written information
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justify the use of mife prior to miso
ranzcog recommendation higher rates of expulsion within 3 days 84% vs 67% reduces need for subsequent surgical management no difference in adverse events
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MOA mife
200mg MOA: synthetic steroid and competitive progesterone receptor antagonist - binds competitively to progestin receptor - stops pregnancy growing - causes the developing placenta and embryo to detach from uterine linign - softens and dilates the cervix - increased uterine contractility - sensitises the myometrium to PG induces contractions
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MOA miso
synthetic PG E1 analogue - induces contractions of smooth muscle in myometrium - relaxes cervix
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clinical governance principals
C - clinical effectiveness A - audits/research R - risk management E - education
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FIGO definition of HMB
excessive menstrual blood loss that interferes with a woman's social, physical, emotional and material QoL
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criteria for vWD testing
heavy menstrual bleeding since menarche one of the following: PPH, surgical related bleeding, bleeding with dental work 2 or more of the following: bruising 1-2x per month, epistaxis 1-2x per month, frequent gum bleeding, Fix
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indications for endometrial sample with HMB
suspected fibroid or polyp persistent IMB or irregular bleeding RF for cancer unsuccessful treatment
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pathophysiology of OHSS
hyper stimulated ovaries proinflammatory cyctokines release of vasoactive products eg VEGF increased vascular permeability and endothelial dysfunction leak fluid from vascular space into third space which depletes the vascular volume
138
RF for OHSS
PCOS young age low BMI increased AMH increased antral follicle count >17 eggs collected HCG type of induction and trigger
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complications of OHSS
vte RDS renal failure cerebral oedema torsion ileus ascites pericardial and pleural effusions
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top 4 ddx for abdo pain post collection
torsion bulky ovaries bleeding infection
141
what are the risks of prolonged pregnancy
Maternal increased - CS - AVB - anxiety/frutsration - OASI - PPH - infection - labour dystocia - gestational HTN FETAL - increased perinatal death (K42 2x, K43 6x) - macrosomia + SD - birth trauma - MAS - neonatal acidemia - neonatal encephalopathy, CP, reduce IQ - post maturity syndrome - increased NICU
142
what does the Cochrane 2020 say about IOL > expectant management in postdates
reduces PND (IOL K41 NNTB 554) reduces stillbirths reduces CS RR 0.9 reduced NICU RR 0.88 reduces APGARs <7 at 5 mins (likely) no difference: AVB, perineal trauma, PPH, BF, neonatal encephalopathy
143
what are some evidence based strategies to reduce postdates
#accurate dating - reduces 50% of pregnancies reaching K42 #S+S - NNT = 8 IOL - reduced CS, PND. HTN
144
what are some risks of IOL
failed hyperstimulation increased intervention cord prolapse uterine rupture PPH
145
benefits of augmentation with term PROM
reduced chorio (maternal) RR 0.49 reduced definitive/probably early neonatal sepsis RR 0.73 reduced CS RR 0.84 reduced neonate receiving IV abx RR 0.61 reduced NICU/SCN RR 0.75
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term PROM trial
Hannah et al 1996 RCT N=5000 singleton confirmed ROM - IOL oxytocin/ IOL PG then oxytocin/ expectant results - no difference in neonatal infection or CS - oxytocin: reduced chorio, PP fever, neonatal abx/NICU, increased maternal satisfaction
147
explain urodynamics
1. NON INVASIVE FLOWOMETRY - sit on toilet and pass urine - voiding function - ?detrusor/obstruction - volume measured 2. FILLING CYSTOMETRY - catheter placed in bladder - PVR measured (MCS sent) - detrusor activity + ability to completely void (Retention/overflow) - rectal catheter placed - abdo pressure - bladder - rectal = vesicle pressure (detrusor) - bladder filled (?detrusor activate during filling - OAB) - compliance and capacity 3. PRESSURE FLOW STudy - asked to void bladder pressure and flow of urine measured - "leak point pressure pressure bladder needs to push out urine 4. URETHRAL PRESSURE PROFILE - catheter removed asked to cough, urethra compliance, pressure, competence - SUI due to intrinsic sphincter dysfunction 5. ELCTROMYOGRAM - perineal muscles
148
dropped BP immediately post epidural insertion - DDx - management
DDx - high block (tingling in arms C8 (diaphragm C4/5) - LA toxicity (CNS often precedes cardiac) - in advertant spinal Management - Met call - SMO involvement ICU, medical team, pads, call second on call anasthetics - DRsABC - O2 on - turn off epidural - sit patient up - check bromage and block - repeat BP - if still low then IVF bolus, consider meteraminol - CEFM - prepare for resp arrest: notify OT chance of emergency CS, intubation, call appropriate team - if thought to be LA toxicity - intralipid
149
list 6 USS features that should be assessed prior to performing an ECV
fetal: anomalies, EFW/AC, dopplers, exact position, hyperextension of neck AFI placental: location, cord maternal: congenital uterine anomalies, fibroids
150
how would you consent a woman for an ECV
Explain what it is - turning baby through abdomen provide written information discuss options: SVB, ECV, CS exclude contraindications - USS prior - consider obstetric hx - maternal wishes and consent - MARCH discuss risks and benefits - 40% success nullips, 60% multi RISKS - 1:5000 stillbirth - 1:1200 abruption - <1:200 CS - 4.3% risk of minor complication eg APH, transient CTG changes, ROM - failure - turns back - pain/discomfort BENEFITS - aims to avoid CS timing: K35 setting: explain what happens next - if successful - if unsuccessful Rh status use of tocolysis - exclude CI: cardiac disease, arrhythmia, untreated thyrotoxicosis - SE: tachy, tremor, flushing, nausea, increased BSL, pulmonary oedema, VF, SVT, ventricular ectopics - most common tachy, tremor, flushing empty bladder recomentm position
151
outcomes of the term breech trial
no difference in maternal outcomes between planned CS and planned SVB planned CS reduced fetal morbidity and mortality - reduced perinatal mortality and serious morbidity in planned CS 1.6% vs 5% (sub) - perinatal death 0.3% vs 1.3% (SVB) - serious neonatal morbidity including brith trauma, seizures, encephalitis, NICU, I/V, low APGAR 1.4% vs 3.8% no difference between groups at 2years
152
maternal risk factors for sepsis
Pmedhx: DM, immunosuppression, anaemia no vaccinations Shx: smoking, BMI, GAS in close contact Obshx: prolonged ROM, retained product, GBS, CS
153
Abx for GAS
benzylpenicillin 1.6g Q4H or 2.4g if in ICU + clindamycin 600mg TDS OR Cefazoline 2g Q8H + clindamycin 600mg TDS OR severe penicillin allergy Vancomycin + clinda IF severe or toxic shock then add IVIG 2mg/kg within 72 hours
154
justify the use of UAPI
o UAPI >95th, indicates abnormal increased resistance at placental vasculature to the fetus o Good predictor of fetal wellbeing o Cochrane review 2017 – use of UAPO leads to fewer obstetric interventions and decreases perinatal mortality o Result helps guide ongoing monitoring required and timing of delivery
155
risk factors for FGR
Maternal: - age - bmi - nulliparity - IVF - pmedhx (SLE, APLS, DM, CKD, HTN) - uterine anomalies - smoking/substance use - fibroids - low SES - ATSI fetal - chromosomal - infections placenta - velamentous cord - placental insufficiency
156
by what mechanism can USS harm a fetus
generally considered safe excessive or inappropriate use carries theoretical risks thermal effects (heating) --> USS waves cause tissue to absorb energy --> heat --> prolonged exposure can raise temperature mechanic effects - cavitation doppler use in early pregnancy - heating ALARA principles as long as reasonably achievable - minimise USS energy while still obtaining the necessary diagnostic information - justification - only perform when medically indicated - optimisation - lowest possible USS output - pain, fain, time, pulse repetition frequency - dose limitation - time, power, mode - machine settings - adjust gain, focus and frequency of power
157
contraindications to ECV
M - Multiple pregnancy A - abnormal CTG R - ROM C - contraindications to SVB H - haemorrhage - ash in last 7 days caution - sga with abnormal dopplers - pet - oligo - major fetal anomalies - major uterine anomalies
158
what is a sacrocolpopexy
suspension of the vaginal apex to the anterior longitudinal ligament of the sacrum using a graft, with possible incorporation of the graft into the fibromuscular layer of the anterior and/or posterior vaginal wall Compared with sacrospinous ligament suspension, sacrocolpopexy has a higher anatomical success rate, less stress urinary incontinence, and less postoperative dyspareunia, but has greater surgical morbidit Sacrocolpopexy, using type 1 synthetic mesh, is a recommended treatment of post-hysterectomy vaginal vault prolapse, and is especially important for women suffering from severe prolapse or recurrent prolapse following previous surger
159
head entrapment occurs at time of CS what do you do - list 5 steps and describe them
1. state emergency - send for help - obstetric SMO - alert anaesthetic - may need to give GTN --> PPH - paeds - resus 2. GTN - smooth muscle relaxation - allowing for easier manoeuvring of baby and release of head - preparation for PPH 3. extension of incision - T or J - more space to perform and release of head 4. manoeuvres - continuous pressure on flexed head to prevent hyperextension of neck - MSC - prevents hyperextension of head, fingers on malaria eminences and occiput to cause flexion of neck and easier delivery - burns Marshall - feet to assistant at 90 degrees and delivery of head 5. more advanced - forceps of after coming head - pipers, flexion of head 6. debriefing, documenting, review of case personally, M+M
160
explain the flow and resistance of the umbilical artery and vein
artery - away from feta heart to placenta with deoxygenated blood - high resistance vein - from placenta to foetus with oxygenated blood - low resistance uterine artery doppler therefore measures placental resistance and is a sign of placental insufficiency
161
describe the indications of letrzole ad dose
MOA: aromatise inhibitor used for ovulation induction indications - PCOS - higher live birth rates, pregnancy rates and similar amounts of multiple pregnancies/losses are climb - unexplained infertility with IUI - breast cancers dose: 2.5 - 7.5mg OD for 5 days D2-5 of cycle monitoring - USS pelvis - D6-12 to track every second day, ensure no follicle >20mm, no more then 3 follicles (Abort cycle), determine timing of intercourse - Estradiol - LH - D21 progesterone confirm ovulation success rates - induces ovulation 60-80% - pre cycle pregnancy rate 15-25% (40-60% within 5 cycles) - if using for unexplained infertility then success 10-20%
162
describe the steps of IVF
# development of follicles pre work up - semen [x] - tubes [x] - genetic carrier screening/fhx [x] - pre conception [x] - lifestyle [x] 1. CONTROLLED OVULATION STIMULATION - GnRH agonist - D20 previous cycle to D10 current cycle to down regulate activiaty of pituitary for controlled ovarian stimulation - gonadotropin (recombinant FSH) - D1 used for control over ovarian stimulation and development of follicles - GnRH antagonist - D6 used to prevent premature ovulation - prevent LH surge # follicular growth monitored by USS D8 + D10 and estradiol levels - TRIGGER with agonist or HCG D10 - induced final follicular maturation and ovulation moving eggs into meiosis 2 2. OOCYTE RETRIVAL - retrieved from follicle before ovulation by USS guided TV aspiration of follicular fluid - 36-38h after trigger - oocytes placed in culture medium and incubated 3. FERTILISATION - sperm introduced D0 - can use ICSI if male sperm a concern - pre testing 4. EMBRYO TRANSFER - transferred into uterus D3-5 post retrieval - success rate - fresh 35-60% vs frozen 25-40% 5. LUTEAL PHASE SUPPORT - progesterone
163
explain 2 different factors that play a role in the pathophysiology of PMDD
#increased sensitivity to progestins/hormonal fluctuations - influence CNS functioning/neurotransmitters #serotinergic system dysfunction - reduced sertonergic activity in luteal phase #brain derived neurotropic factor increased
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PRIMARY AMENORRHEA
#Hypogonadoatrophic Hypogonadism (Central) - constitutional - anorexia, exercise, stress - increased PRL - chronic illness - CNS - kallman #hypergonadotrophic hypogonadism (gonad failure) --> karyotype needed - turners 45Xo - POI 46 XX (genetic, autoimmune, metabolic) - sayers 46XY - chemo/rad - galactosemia #structural (normal boobs) --> USS pelvis uterus present: mullerian anomalies eg imperforate hymen uterus not present: CAIS (increased T, 46XY) or MRKH (N T 46XX) other - PCOS - Kleinfelter - pregnant - causes of hyperandrogegism eg CAH
165
5 epidemiological factors that may account for why First Nations people have higher cervical cancer
reduced vaccination reduced health literacy reduces access living rural/remote areas reduced services increased smoking and lifestyle factors distrust in system duration of exposure to HPV immunocompromised states eg DM
166
explain the risk in future pregnancies following complete mole
recurrence 1:70 does not make subsequent pregnancy high risk - does need early USS K5-6 placenta for histo HCG at 6 weeks PP
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history confirms complete mole what would you organise
referral to GTD centre discuss results with patient - explain what it is - what implications it has - what the risks are - SPIKES - sensitive psych, social work, bereavement supports EPS follow up red flag advice: PVB, resp sx, neuro sx contraception - COCP, mirena is not suitable due to risk of perforation - explain importance of not falling pregnant in this time weekly HCG - weekly until negative for 3 weeks in a row, once negative then can do monthly for 6 months - if increases by 10% over 2 weeks or plateaus 10% over 3 weeks then concerns for GTN
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what are the risks with lamotrigine in pregnancy - pre conception counselling
USUAL PRECONCEPTION - genetic screening/Fhx - vaccinations [x] - lifestyle [x] - stop smoking, alcohol, reduce caffeine [x] - pre pregnancy examination - heart, BP, weight, CST [x] - screen psych and IPV [x] - supplementation - increased in epilepsy - counselling re perinatal infections and how to prevent - pmedhx [x] - optimise SPECIFIC TO EPILEPSY - refer to MDT - high risk pregnancy - preconception optimisation - medication review: lamotrigine lower risk, risks
169
list fetal abnormalities associated with valporate
NTD 1-3.8% CHD high risk of psychomotor and neurodevelopment outcomes eg ASH, ADHD, low IQ dysmorphic facial features - V shaped eyebrows, low set ears, broad nasal bridge, irregular teeth, hypoplasic nails, hyperplasia of mid face
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describe the Intrapartum management of someone with epilepsy
Intrapartum - MDT - care plan - during day - 1:1care, delivery in hospital - CTG - MOD/IOL obs driven - 1-2% have seizure in labour, 1-2% have seizure in first 24 hours --> lowered seizure threshold, reduced gastric emptying - continue regular AED - early epidural considered - anaesthetic input, reduce stress, rest and pain but ?lower threshold - if seizure and not self limiting --> left lateral tilt, maintain airway, oxygen IV Lora - could consider long acting Benz but high risk of neonatal resp depression - seizure in labour --> maternal hypoxia --> fetal hypoxia + acidosis due to uterine hypertonic Postpartum - IM IVt K to baby - BF [x] - consideration of AED after, return to pre dosing - PND - contraception - copper IUD if interaction
171
what is the immunofluorescent findings of pemphigoid
C3 deposition in the basement membrane
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what is the pathogenesis of pemphigoid
autoimmune ?related to exposure to fetal antigens binding of circulating complement fixing IgG antibodies to protein - bulls pemphigoid antigen 2 in BM --> skin triggers immune response
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describe the muscles of the external and internal anal sphincter and how they contribute to anal continence
INTERNAL - smooth muscle - shiny, pale, white - starts 1-2cm above anal verge - longitudinal - under external - involuntary control --> if damaged results in passive soiling (70% of faecal and flatus continence) EXTERNAL - striated muscle - horizontal - bulk - voluntary control --> urge incontience, squeeze pressure (30% of faecal and flatus continence)
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ORACLE 1 outcoems
erythromycin - prolonged latency of pregnancy - reduced primary outcome (reduced positive blood cultures, oxygen dependence at 28 days, surfactant use, cerebral abnormalities on USS) >>> reduces resp complications, composite neonatal morbidity and mortality, increased length of pregnancy
175
explain the pathogenesis of PCOS
risk factors such as obesity, genetics lead to #increased GnRH pulsation + metabolic syndrome - increased LH>FSH ealse - increased SHBG + increased peripheral oestrogen + increased androgen enzymes + increased insulin like growth factor #androgen excess - arrest f follicles --> anovulation --> no CL --> no progesterone --> no feedback into cycle
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complications of LN dissection
lymphedema wound breakdown infection haemaotoma VTE neuropathy cellulitis recurrence neuovascular injury
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list 3 disadvantages of sentinel node biopsies
failure to map learning curve pain on injection false positive
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USS features of vasa praevia
linear tubular structure over internal os or within 2 cm attached to inner perimeter of the fetal membranes colour and pulse wave doppler through structure differential diagnoses excluded - does not float away, confirmed not maternal vessels 100% sensitive and 99.8% specific
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benefits of antenatal detection of vasa praevia
undiagnosed vasa pare via had very high fetal mortality rates ~60% with poor outcomes for survivors - low pH, low APGARs, high need for pRBC - foetus exsanguination with ROM or labour as well as hypoxic injury with cord compression allows earlier CS and timed steroid loading allow for admission in case of PROm, PTL, PVB to expidite delivery
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spectrum of neurodevelomental outcomes from an IVH
CP gross motor dysfunction seizures hypoglycemia intellectual impairment visual or auditory impairment neurodevelopment outcomes unaffected delayed mile stones autonomic dysfunction language delays learning impairments
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how reduce intraopeartive complications #bowel #bladder #inferior epigastric artery
bladder - IDC - insufflation - careful handling bowel - trendelenberg - insufflation - visualisation of instruments at all time - do not rest on bowel - minimise traffic and crossing of instruments inferior epigastric artery - awareness of anatomy - locate, illuminate - port placement technique - insufflation 20-25mmH, insertion under vision, careful not to track, >5cm from midline
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4 pregnancy complications of mullerian anomalies
malpresentation - septum, difficult to foetus to turn, increased transverse #abnormal placentation eg praevia - abnormal endometrial lining recurrent pregnancy loss - failed implantation #ectopic in horn - abnormal tubal morphology #labour dystocia and CS - inordinate contractions #PPH - retained placenta, poor tone
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when would you remove an IUD in PID
septic shock not improving pregnant patient preference malpositioned due to be expired TOA
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benefits of laparoscopy in PID
source control - copious pelvic irrigation and wash out pelvic infection systematic inspection of pelvic cavity for other potential causes eg appendix, diverticulitis drain to facilitate drainage faster recovery drainage of abscess do if no clinical improvement 48-72h TOA >7cm or ruptured TOA
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explain the specific risks of twin demise in MCDA twins
risk to other twin - 10-25% death - 25-40% risk of neurological insult secondary to hypertension and exsanguination of surviving twin into dead twin fetoplacental circulation through anastomoses do not deliver immediately unless death of other twin during USS or on a CTG it could be considered with expert input when adding up risks of prematurity longer interval between delivery improved outcomes fetal MRI head to exclude neurological insult ~4 weeks following
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perform a hymenectomy
WHO time out IV abx correct clinicians present eg PAG IDC prep drape position imaging prior Hymenectomy - cruciate incision or U shaped using sharp dissection - avoid urethra - drainage of haematocolpos - approximate hymenal edges to - vestibule/mucosal edges reapproximated - absorbable suture - consider electrocautery post op - IDC - topical e 6/52 - nothing in vagina 6 weeks
187
Ddx hirsutism
CAH Sertoli cell tumour PCOS Cushings Hyper/hypothyroidism Hyperprolactinoma
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short term and long term complications of endometrial ablation
SHORT TERM - perforation --> visceral injury - cervical trauma - thermal injury to adjacent tissue - failure to open device and activate - failed fun coverage - uterine necrosis - endometritis - anaesthetic complications LONG TERM - post ablation/sterilisation syndrome - unsuccessful treatment - failed contraception resulting in pregnancy --> miscarriage, PTB, PAS, uterine rupture, hysterectomy - failed or difficult endometrial sampling - cervical stenosis - haematometra
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USS signs of ovarian torsion
whorl pool sign arterial/venous blood supply oedematous, round overies string of pearls ovarian mass probe tenderness ovary pulled midline pelvic free fluid limitations: poor sensitivity, specificity, TA views limited, signs non specific, access, training, machine, interpreting, not a radiological diagnosis
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describe the ultrasound features of PAS
loss of clear zone - muometrial plane under the placenta myometrial thinning <1mm abnormal placental lacunae + vessels - large irregular often containing turbulent flow bladder wall interruption - loss or interruption of bright bladder wall placental budge - deviation of uterine serosa focal expohytic mass - placenta through serosa briding vessels - placenta to bladder uterovasical/subplacental hypervascularity
191
192
risk factors for PAS
direct surgical scar: CS, D+C MROP, Sherman, endometrial resection, myometectomy non surgical: IVF, UAE, chemo/rad, MROP, endoemtitis, previous accreta uterine anomalies
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pet pathophysiology
# spiral arteries do not undergo the normal vascular remodelling to become high capacitance and low resistance vessels due to abnormal trophoblast infiltration FIRST HALF OF PREGNANCY: diffuse vascular endothelial dysfunction and abnormal placentation --> placental ischemia #spiral arteries do not undergo normal vascular remodelling to become high capacitance low resistance vessels due to abnormal trophoblast invasion #uteroplacental ischemia SECOND HALF: maternal inflammatory response #endothelial cell activation --> increased capillary permeability, prothrombotic factors and platelet activation and vascular tone #microvascular damage and dysfunction --> HTN, proteinuria, hepatic dysfunction #increased sFLT --> antagonise and therefore reduce VEGF and PlGF --> systemic endothelial dysfunction
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who is high risk for syphilis
sexual contact with infectious syphilis case ATSI and in outbreak area substance use women whose partner is MSM high risk sexual activity late booking
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risk factors for ectopic pregnancy
sterilisation OR 9 previous ectopic OR 8 previous tubal surgery OR 4 documented tubal pathology OR 3 PID OR 3 previous miscarriage OR 3 IUD >2years OR 3 AMA OR 3 infertility OR 2 smoker Or 1.5
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B Lynch suture
1. beginning below the incision, the needle pierces the lower uterine segment to enter the uterine cavity 2. needle exists the cavity abouve the incision. the suture then loops up and around the funds to the posterior uterine surface 3. the needle pierces the posterior uterine wall to re enter the uterine cavity. the suture then transverses to the opposite side within the cavity 4. the needle exists the uterine cavity through the posterior uterine wall. from the back of the uterus the suture loops up and around the fundus to the front of the uterus 5. the needle pierces the myometrium above the incision to re enter the uterine cavity 6. the needle exists below the incision and the sutures at point 1 and 6 are tied 7. the hysterectomy incision is then closed in the usual fashion
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permpartum hysterectomy
1. round ligament is clamped, ligated and transected bilaterally - anterior leaf is used to incise downward to meet the former bladder flap 2. posterior leaf of the broad adjacent to the uterus is perforated just beneath the Fallopian tube, utero-ovarian ligaments and ovarian vessels 3. uteroovarian ligament and Fallopian tube are clamped and cut. lateral pedicle is double tied - medial clamp is left in place and removed with entire specimen 4. posterior leaflet of broad is divided inferiorly toward uterosacral ligament 5. bladder and attached peritoneal flap are further deflected and dissected - special care to avoid ureters here 6. uterine vessels are clamped, once divided the lateral vascular pedicle is double ligated to ensure haemostasis 7. cardinal ligaments are clamped, incised and ligated 8. curved clamp is placed across the lateral vaginal fornix below the level of the cervix and tissue inside medially to point of the clamp 9. transfixing stitch is placed on each side to close the lateral vaginal cuff. interrupted pitches may be need to close the midline gap
198
explain the pathophysiology of TTTS and sFGR in MCDA twins
TTTS - placentas have predominance of unidirectional artery to vein anastomoses --> haemodynamic imbalance within circulation of twins - adversely affecting - fetoplacental perfusion (inequalities territories) - fetal renal function (discordant RAAS activation) TOPS 10% - large central artery to vein anastomoses - classical > donor, oligo, FGR, UA PI doppler > recipient: poly, cardiac dysfunction, cardiac failure, DV wave doppler - midtriemster (rare over >26) - fetoscopic laser if donor anaemia: MCA PSV >1.5 > recipient: polycythemia selective growth restriction 15% - uneven distribution of placenta, influenced by degree and type of vascular anastomoses, differing placental territories - EFW <10 or discordance >25% --> dopplers - can happen in DCDA too - cord abnormalities, differing growth potential, poor placentation, aneuploidy, congenital anomalies TRAP - twin reversed arterial perfusion sequence - cardiac twin - large artery to artery placental shunt intrauterine fetal death - more likely in MCDA - if 1 dies then 10-25% risk of death and 25-40% risk of ischemic cerebral lesion - secondary to hypotension and exsanguination of surviving twin into hypotensive dead twin fetoplacental circulation twin to placental anastomoses - DCDA 3% death, 2% neuro sx
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what factors are considered in the SVB of twins
not MCMA >k32 uncomplicated no contraindication to SVB presenting twin cephalic no significant growth discordance note 1/3 emLSCS epidurals increase success specific risks - malposition - increased CS - acute TTTS - IVP - PPH
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describe the quitero staging TOPS
1. significant discordance AFI - donor: oligo - recipient: poly - bladder seen - normal dopplers - 90% survival 2. cannot see bladder in donor - donor: oligo - recipient: poly - survival 88% 3. dopplers - donor: UA PI - recipient: DV - survival 67% 4. recipient - hydrops - survival 50% 5. death 20% survivors severely handicapped and 40% of those have CP before intervention stage 3 or higher 70-100% death now with intervention 76% survival
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describe the Leiden staging TAP
1. dono MoM >1.5 recipient <1.0 2. donor MoM >1.7, recipient <0.8 3. stage 1 or 3 + cardiac compromise in donor 4. donor: hydrops 5. death of 1 or both
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sequelae of primary symptomatic congenital CMV
5-10% mortality in first 3 months 35-50% chance of neuro sequelae from microcephaly including 10% seizures, 10-20% chorioretinitis, 70% developmental delay 25-50% chance of sensorineural hearing loss with progression expected in 1/2
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USS features of CMV
neuro: microcephaly, ventriculomegaly, cerebral calcifications abdo: abdo calcifications, hypo echoic bowel, HSM hydrops: ascites, judrp[s AFI: oligo/poly FGR
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outcomes of asymptomatic congenital CMV
5% sensorineural hearing loss with progression in half 2% choriretinitis
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congenital CMV
FGR microcephaly intracranial calcifications chorioretinitis mental and morta rtardation haemolytic anaemia thrombocytopenia jaundice HSM sensorineural deficits
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prevention of CMV
clinician education patient education written information to be given out wash hands after touching nappies, wiping bottoms, wiping noses/secretions from babies/toddlers do not share food, drinks, utensils do not put dummy or toothbrush in mouth do not kiss on lips wash hands with soap and water clean toys and bench spaces
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management following delivery of a primary CMV
baby - examination - investigations urine/saliva PCR within 21 days, bloods, USS head - treatment - optical review - hearing review - long term follow up: eyes, ears, paeds until 6yo mum - contraception as highest risk first 12 months following primary - risk in future pregnancy of reactivation or re infection - BF safe
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post dates cochrane
baby - reduced PND (NNTB 554) - reduces stillbirth - reduces NICU - reduces low APGARs mum - reduces CS - reduces maternal HTN little to no difference, AVB, PPH, BF, perineal trauma, NE
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adjuvant chemo for germ cell tumours
BEP bleomycin - lung toxicity etoposide - N/V, fatigue, bone marrow, alopecia cisplatin - ear/renal/bone, peripheral neuropathy increased POI 90% success rate if recurrence lethal
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define OAB
urinary urgency accompanied by frequency and nocturne with or without urgency urinary incotnence in absence of UTI or other pathologies urgency = desire to avoid that is difficult to defer
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how does Hyperprolactinemia cause - oligomenorrhoea - galactorrhea
GALACTORRHEA # increased PRL from anterior pituitary --> direct stimulation of mammary glands to produce milk OLIGOMENORRHEA # PRL --> HPO axis --> reduce GnRH --> reduce LH and FSH --> reduce follicular development, ovulation and oestrogen production --> no CL therefore no P --> endometrial shedding becomes irregular
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drugs that cause high PRL
antipsychotics eg haloperidol antiemetics eg metoclopromide opioids SSRI - escitalopram cART antihypertensives eg methyldopa
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PCOS bloods
D2: LH, FSH, E D21 progesterone free T, FAI, SBHG, DHEAS TFT AMH PRL fastring glucose, lipids USS pelvis
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hyperandrogegism / virilisation - DDx - Ix
CAH cushings adrenal tumour androgen secreting ovarian tumour exogenous androgen ovarian hyperthecosis severe insulin resistance Paraneoplastic production of acth eg small cell lung cancer Ix - bloods: LH, FSH, E, T, DHEA, DHEAS, 17 OHP, androstenedione, 11 deoxycortisol, - imaging: USS pelvis, MRI, ct chest - special: ACTH, dexamethasone suppression test, 24h urine cortisol - tumour markers: inhibin, afp, ca125
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azospermia Ix
Hormonal- T, LH, FSH #determine if primary or secondary hypogonadotroism or partial androgen insensitivity - really reduce LH - exogenous androgen - reduce T, increased LH/FSH: kleinfelter - normal T/LH, increased FSH: micro Y deletion - increased T/LH, N FSH - androgen insensitivity - all normal - obstruction Genetic/karyotyping - CFTR, kleinfelter scrotal/testicular USS: obstruction PRL +/- MRI brain TFT repeat semen/post urination
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Cut vs coat
CUT - sinusoidal continuous wave form with low amplitude --> rapid rise in temp --> rapid expansion of intracellular fluid and cell explosion - no contact: vaporisation 100degrees - contact: desiccation or coaptation COAG - interrupted, intermittent wave form with high amplitude - current delivered 6% of the time but increased voltage --> slow rise in temp - no contact: fulguration 200 degrees - contact: desiccation or coaptation
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mechanisms of electrosurgery injury
INADVERANT ACTIVATION: foot pedal, noise, plastic holder, in view LATERAL SPREAD: reduced prolonged activation, low power, proximity RESIDUAL HEAT: avoid touching after activating COAPTATION COUPLING: avoid hybrid cannulas, reduce power DIRECT COUPLING: do not touch instruments, reduce traffic INSULATION FAILURE: avoid re usable, inspect, AEM technology ALTERNATIVE PATH: AEM RETURN ELECTRODE BURN
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clinical signs of SGH
general: APGAR <7 at 5 mins with no asphyxia, AVB later: HD instability, poor activity, paler, anaemia, coagulopathy, acidosis, death Localised - vague generalised scalp swelling and laxity - fluctuant old death pouch - fluid thrill - bLottable lesion that crosses suture lines - gravity dependent fluid shift - pitting oedema
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SGH anatomy
epicranial aponeurosis - sheet of fibrous tissue that covers the entire cranial vault extending from orbital ridges to nape of neck and lateral to ears separation of epicranial aponeurosis from periosteum creates a large potential space due to rupture of emissary veins (connections between dural sinuses and scalp veins)
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difference between - caput - cephalohaematoma - SGH
CAPUT - pressure on head during labour - serosanginous extra-aponeurotic collection extend over midline and sutures CAPHALOHAEMATOMA - occurs when friction forces generated during birth in bleeding between periosteum and underlying skin - does not cross suture lines SGH - results from bleeding into large potential space between epicranial aponeurosis and periosteum from bleeding emissary veins (connections between dural sinuses and scalp veins) - fluctuant, ill defined, crepitus, fluid thrill
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MOA clomid
SERM antagonistic effect on oestrogen receptors in the hypothalamus - withdrawing any negative feedback on the hypothalamus --> increased pulsatility of GnRH --> increased gonadotropins SE: hot flushes, vaginal dryness, mood changes, nausea, pelvic pain, visual disturbances, OHSS, multiples
221
4 main causes of PMB
atrophy 60% polyp 2-12% exogenous oestrogen 15-25% endometrial hyperplasia 10% malignancy 5% other: infection, trauma, iatrogenic, fibroids
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LLETZ complications
immediate: bleeding, damage to surrounding structures Short term - secondary bleed - infection - malodorous discharge - pain long term - altered apperance - cervical stenosis - menstrual sx, dysmenorrhea, haematometra - TZ no longer visible - difficult colp - cervical incompetence - PTB
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HSIL on colp
histo p16 "block type", high N:C ratio, hyper chromic SURFACE CONTOUR - visible/rolled edges - peeling epithelium - ulcerated - fungating VASCULAR - tree link branching - coarse punctation/mosaicism ACW - dull oyster gray - rigid, rapid - sharp border TOPOGRAPHY - well defined - linear - sharp margins - cuffed cripts - ridge sign - extends to endocervical canal IODINE STAINING - negative/no staining
224
muscles cut with an episiotomy
perineal body part of levator ani: Pubococygeus, iliococcygeus, puborectalis, coccygeus superficial and deep transverse perineal bulbospongiosum at crowning using mediolateral incision at minimum 60 degrees from fourchete
225
miscarriage management - success rates
Expectant - 80% incomplete by D14 - 60% missed by D14 - up to 50% failure medical - 80% but in shorter time - wife 16% failure - mife + miso 67 --> 84% expulsion - Zhang 84% by D8 miso (71% D3) - safe no difference in haemorrhage, endometritis, fever, hospital admission, acceptability Surgical - 95-99% success - failure 3% Zhang
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suction curette risks
perf 1:200-400 infection <1% RPOC 3-5% bleeding 2/52 10% pRBC 0-3:1000 intrauterine adhesions 10-21%??? cervical injury 1% PGE - binds smooth muscle contractions and softens cervix - reduces complications related to cervical lacerations and false passages, not perforation - reduces OT time - increase SE
227
MTX MOA and SE
MOA: folic acid antagonist - folic acid is essential in rapid cell division and growth therefore interferes with DNA synthesis in rapidly dividing cells SE: GI upset (abdo pain, N/V/D), photosensitivity, oral ulcers, alopecia monitoring - HCG D1, 4, 7 - drop >15% D4 to 7, HCG weekly until negative - no drop give second dose - check D14 - avoid pregnancy 3-6/12, Nsaids, etoh, sex - 90% success if HCG <1000
228
what is the pathophysiology of OHSS
ovarian hyperstimulation release of pro inflammatory cytokines and VEGF endothelial dysfunction increased vascular permeability fluid leakage into interstitial space third spacing oedema (ascites, pleural effusions) + intravascular hypovolaemia (hypotension, increased Hct, vte)
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HG - Windsor criteria
starts early gestation 13 - severe N/V unable to eat/drink normally strong limitations on ADL
230
recurrent pregnancy loss Ix
MUST - APLS - anticardiolipin (>99% titre), lupus anticoagulant (positive at all) +/- beta 2 glycoprotein (high titre) - 3D USS pelvis - TFT + TPO consider - hx and shared decision making - POC for karyotype - parental karyotype - ANA - PRL/PCOS - HyCoSy/HSG - semen analysis for sperm DNA fragmentation
231
list and describe 4 USS features of spina bifida
- Meningocele – budging of neural tube often at sacrum - Obliteration of cisterna magna - Lemon sign - fontal bone scalloping - Banana sign – cerebellum - Neural arch is U Shaped +/- associated bulding meningocele (thin walled cyst)
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limitation of studies
ethics power size protocols primary/secondary outcomes risks/benefits change in practice supported in Cochrane
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what are the complications of ICP
MATERNAL - Pruritis - GDM 3x increased - PET 10x increased - long term: chronic liver disease, gallstones, liver//biliary tree cancer, DM, thyroid disease, psoriasis, corns FETAL - stillbirth - mec - iatrogenic and idiopathic ptb - RDS - no long term studies
234
Slow progress, Persistent ROP primip - what can cause this.
Power: inadequate contractions Passenger: macrosomia, flexed, asynclitism, fetal anomaly Pelvis: certain pelvic formations are more predisposed to OP positioning eg android or anthropoid, CPD, soft tissue obstruction eg bladder Other: epidural, positioning lack of movement
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what are the risk factors for instrumental failure
maternal - BMI >30 - poor maternal effort - short stature fetal - macrosomia, HC >95% - OP - deflexed, asynclitic - >1/5 palpable abdominally, not below spines - caput >2+
236
term breech trial
Multi centre randomised control trial Analysed on intention to treat Aim: investigate the impact of planned vaginal delivery vs planned CS for term breech on perinatal mortality and morbidity Results - Reduction in perinatal morbidity and mortality with planned CS compared to planned SVB (1.6% vs 5%) RR 0.33 NNT = 14 - Reduction in perinatal mortality 0.3% vs 1.3% - Reduction in perinatal serous morbidity eg NICU, apgars, acidosis, ventilation 1.4% vs ~4% - No difference in maternal morbidity or mortality o Difference between high and low income countries – more prounced in high income (PMR) Strengths: large study, powered for results, multi centre international – generalisable, clear statistical difference, clear primary outcome, good protocol for management Weaknesses: no USS compulsory – exclusion for planned breech eg LGA, position other then frank or complete etc not done, not all breech babies were breech at time of delivery, had to self nominate to be a breech expert - ?variable skill levels between institutions , optional CTG, randomised in labour, no labour management
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how does endometriosis impact fertility
functional change - altered tubes and endometrial environment / function - disordered tube motility and myometrial contractions impair gamete transport and embryo implantation - aberrent gene expression and down regulation of progesterone R may impact on endometrial receptivity pelvic environment/autoimmune dysregulation - increased inflammatory cytokines, growth and angiogenic factors that may disturb sperm activity, egg activity, fertilisation and embryo transfer anatomical distortion - adhesions ovarian research - reduced endometriosis treatment - inherently contraceptives pain - impact normal sexual function
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CVS vs amnio
CVS - gestation: K 11-13+6 - risks: limb reduction, mosaicism, miscarriage 1:100 Amnio - gestation: >15 - risks: direct fetal injury, miscarriage 1:200 general: ROM, failed result, alloimmunisation, infection, BBV
239
terminates pregnancy affected by SMA, what are management options for ongoing fertility?
Referral to genetic counselling with MDT approach Sent POC for confirmation microarray and karyotyping Bereavement support Explain that this is not something that can be altered by behavioural management etc Explain what an autosomal recessive condition is and how happens Provide information Referral into high risk obstetric clinic and MFM for counselling Confirmation of parental carrier status IVF with pre implantation genetic testing Donation of gamete or embryo (given autosomal recessive could be donation of either ovum or sperm) Natural conception with amnio or CVS then termination if positive Natural conception with no action and confirmation on delivery Adoption Surrogacy would only work with donation of embryo, sperm or ovum as autosomal recessive No future children
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4 public health measures to reduce PTB
universal cervical length screening – provides ability to intervene if cervix length <25mm, evidence to support that progesterone reduces PTB and complications of such #addressing risk factors eg smoking – smoking cessation, screening for smoking, referral to QUIT line, often highly motivated population #screening for asymptomatic bacteremia or UTI – treatment reduces PTB rates # weight loss prior to conception # continuity of care # identification of those who already had PTB and appropriate management, screen for infections, screen cervix length, continuity of care model in dedicated preterm birth clinics, progesterone # avoid iatrogenic PTB
241
29w presents in preterm labour, describe affects of antenatal corticosteroids, wirh RR to quantify
Antenatal corticosteroids is supported with Cochrane evidence and numerous RCTs – level 1 evidence PND RR 0.85 NND RR 0,78 RDS RR 0.71 Likely reduction in IVH ~RR 0.56 Likely reduction in NEC Likely reduction in poor neurodevelopmental outcomes
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other then steroids what do you give for a PTB and why
Ensure that patient if safe to do so is transferred to a tertiary unit with baby in utero because this improves outcomes Given under K30 then would provide with mgso4 - Cochrane evidence to support reduction in cerebal palsy 50% reduction diagnoses NNT 60, reduction in cerebral palsy or death NNTB 56, likely reduction in IVH, older Cochrane would also support reduction in gross motor dysfunction - Would give 4g loading over 10 minutes with CTG monitoring then 1g/hr following, aiming at least 4hours prior but ideally 24 hours - Exclude contraindications eg myasthenia gravis, - Suitable for multiple pregnancies - Continuous CTG monitoring - MOA: NMDA receptor antagonist  reduces calcium release, provides neuronal stability, reduces cytokines and injury Tocolysis - Could consider tocolysis in this instance to delay for steroid loading - Allows for benefits of steroids - Nifedipine – CCB – smooth muscle relaxant - CI: APH, chorio - Dosing: - Duration: 48hours Antibiotics - ORACLE 2 would suggest that antibiotics for threatened preterm birth are contraindicated - Antibiotics for imminent preterm birth are recommended for GBS coverage as well as other bacteria, reduces sepsis and EOGBS - If this woman was contracting regularly despite tocolysis, dilated >3cm or progressing then would commence IV abx at dosage of 3g benzylpen  4h 1.8g - Best if >2 hours prior to delivery - Baby likely to be given IV abx as well after delivery
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evidence based methods to reduce sepsis in pregnancy
Individual:hand hygiene, sterile gloves, 5 steps of hand hygiene, vaccination #Preconception: optimization of medical conditions, education re hand hygiene, vaccinations eg MMR, education re CMV, toxo prevention #Antenatal: regular urine screening for asx bacteria and treatment, infulenza and covid vacciantions, education antenatal re early presentation, recognition of sepsis by team Hospital: hot water, sterile equipment, prompt, maternal early warning scores, vaccination programs for staff, isolation rooms Policy: protocols eg sepsis 6, IV abx prophylaxis – AVB, CS, Somanz guidelines eg sofa scores, sepsis 6 – broad spectrum abx
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what are antibiotics for maternal sepsis including to cover for GAS as per RANZCOG guideline
general antibiotic coverage depends on local hospital guidelines but recommend broad coverage including gentamycin 5mg/kg one off dose (can be considered at 24 hours for a second dose but risk of ototoxicity), metronidazole 500mg BD IV, ampicillin or amoxicillin 2g Q4-6H if concerned that there is a GAS then start with broad spectrum + clindamycin 600mg IV TDS until confirmation then can step down to benzylpenicillin 1.8g Q4-6H + clindamycin 600mg IV Q8H (inhibits and reduces the release of toxins)
245
Slow progress, Persistent ROP primip - what can cause this.
Power: inadequate contractions Passenger: macrosomia, deflexed, asynclitism, fetal anomaly Pelvis: certain pelvic formations are more predisposed to OP positioning eg android or anthropoid (contracted pelvis), CPD, soft tissue obstruction eg bladder, fibroids Other: epidural, positioning lack of movement, dehydration
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requirements to proceed with an instrumental
patient - Abdo examination: <1/5 palpable abdominally, - VE: membranes broken, fully dilated, known position in pelvis – below spines, known position of head, <2+ moulding/caput, descent with pushing - Confirmation of position on USS - Adequate contractions - Exclude signs of obstruction: haematuria, irreducible moulding - Confirm indication: maternal exhaustion, fetal distress, prolonged second stage contraindications to second stage or Valsalva - Exclude contraindications to instrumental: fetal – bleeding disorder, predisposition to fracture, spines or >1/5 palpable abdominally #consent - Risks: injury to baby – SGH, fracture, birth trauma, injury to mum – OASI, incontinence, risk of failure – conversion to forceps (increased poor maternal and fetal outcomes) or CS - Benefits: shorten time to delivery - Indications as above - Written consent could be considered - Include episiotomy as part of consent – strong recommendation for, reduction in OASI with vacuum 16%, FAB 24% - IDC removed/in out done/bladder empty - Lithotomy - Correct instruments - Good lighting - Aseptic technique #positioning/preparation - Supervision/appropriate experience level - Preempt complicaitons – consider whether there is fast availability to recourse to CS if required, perform in OT vs on birthsuite - Paeds present, prepare for resus - PPH preempted - Shoulde rdystocia pre empted
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Baby gets SGH, how can clinicians reduce SGH with ventouse
Subgaleal haemorrhage is a potentially life threatening complication of delivery and associated with vacuum deliveries (1:300 chance). It is where there is bleeding into a potential space between the epicranial aponeurosis and the periosteum with rupture of emissary vessels. Patient selection eg poor maternal effort (excessive force may have been used), fetal predisposition to bleeding Use as per manufacturer instructions – 600-800mmHg pressure Vacuum position: at flexion point, midline on sagittal suture 3cm from posterior fontenalle and 6cm from anterior, avoiding asynclitic placement increases risk Only pull with maternal effort in smooth motion (avoid rocking and irregular pulling) When to abandon procedure: >2 pop offs, >20 minutes, head not on perineum with 3 pulls, not delivered within 6 pulls Experience, workshops, clinical skill development, appropriate supervision
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She’s now ROA and at +2, Cochrane evidence for choice of instrumental to achieve safe vaginal birth with minimal injury to mum and baby
Forceps: increased success RR 0.5, increased OASI RR 1.5 and maternal trauma RR 1.8, reduced fetal injury Vacuum: reduces success, reduces maternal injury, increased subgaleal, retinal haemorrhage Depends on circumstances eg fetal bradycardia, poor maternal effort, dense epidural, maternal wishes, caput that increases risk of vacuum failure, clinician experience and preference Overall: VAB reduced risk to mum, with low risks to baby and no contraindications to VAB No difference in PPH, APGAR or pH
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describe immune response, circumstances and requirements for haemolytic disease of the newborn
Rh negative or kell negative (antibody negative) mums  when these mums are exposed to a fetus (or blood products) that has antibodies they create initially IgM which cannot cross placenta so often does not affect the first pregnancy. These mothers then develop IgG which can cross the placenta in subsequent pregnancies. When IgG crosses the placenta it attacks and sequesters fetal RBC for destruction leading to anaemia. With anaemia there is a reduction in RBC and therefore there is extramedullary haematopoisis often from the liver  reduced oncotic pressure reduced cardiac output  hydrops  death If kell there is also destruction of the erythropoetic progenitor cells leading to more profound complications at much lower titres and more unpredictable. Immune destruction of erythropoitic cells. Neonates with HDFN develop jaundice and hyperbilirubinaemia. If the hyperbilirubinaemia overwhelms processes of its removal there can be damage of the basal ganglia leading to kernicteris. The complications are kernicterus, sensorineal hearing loss and death. These babies frequently need hydration and pRBC for replacement. Requirements: fetal Ag present Circumstances: blood transfusion, sensitization events – 1st, 2nd, 3rd, pp
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Patient had 3L PPH and 2x PRBC. Next pregnancy she has anti-Kell abs and is rhesus negative - what are 2 maternal considerations for antenatal management?
#confirm at blood group and ab status - Provide Anti d cross matching for blood groups – blood bank may need time to match and therefore in cases of emergency may be difficult to administer correct blood but default should be o neg (she would be fine with this) and kell neg (fine) and therefore shouldn’t have reaction. If planned for delivery then would be best to cross match as a default for her. #high risk pregnancy – 2x antibodies  will need titres from first trimester likely weekly but if kell titre returns positive (1:4) then immediate referral to MFM, would need weekly USS for MCA PSV and hydrops from K16 with referral to MFM for serial titres and USS
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ICP - exclusion of other causes
other causes of deranged LFT/itch in pregnancy o Dermatoses: PUPPS, atopic erupton, phemphogoid o Other: jaundice, AFLP, hepatitis, PET/HELLP, obstructive eg cholecystitis/choledocholithias - no longer a diagnosis of exclusion but would recommend screening alternative causes if red flags - red flags: commences 4x upper limit normal, signs of liver failure - infectious screen: Hep A/B/C, EBV, CMV - structural/obstructive: liver USS – cholecystitis - autoimmune: anti smooth muscle antibiotics, anti liver-kidney ab, ANA
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ICP management
#Counselling with patient regarding risks Fetal risks: stillbirth, PTB, meconium, RDS  no monitoring prevents these Maternal risks: GDM, PET, pruritis, long term risks #Timing of delivery – risk of stillbirth No other ways to change outcome Supportive management #Avoid itching: emollients, avoid heat, cut nails short, pine tarsal #Antihistamines #Ursodeoxycholic acid: Ptiches trial and Cochrane: do not reduces perinatal outcomes, statisifically significant reduction in itch but not clinically significant, no alternative medication Follow up: Weekly review for bloods, Given BA >110 would perform coags --> ensure that normal --> if abnormal give IV Vit K and then repeat weekly and before delivery #High risk GDM and PET – monitor #No role for routine USS or CTG but red flag advice re DFM and presenting if concerns, low threshold to perform # No impact on MOD – obstetric indications #Given BA >100 – very severe ICP --> Delivery around K36, could be considered earlier if previous IUFD at earlier gestation due to ICP # Risk of idiopathic PTB – red flag advice #Paeds consult given likely to have a PTB Postnatal o Discuss risk of recurrence high 60-70% o Can have COCP but needs to wait until LFT normal, recheck LFT 3/12 after commencing, risk of itch o Repeat bloods at 6 weeks to ensure normalized, if not referral to hepatology o Cease urso at delivery o No impact on BF o Not a RF for VTE #Avoid medications that can worsen LFTs
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Risks of a cone biopsy
Immediate risks: bleeding, damage to other structures Short term: pain, abnormal discharge, bleeding, infection Long term: - Gynae: cervical stenosis – haematometra, dyspareunia, dysmenorrhea; difficulty with future examinations and assessments – cannot see TZ, insufficient sample/incomplete excision with positive margins needing further surgery - Obs: cervical incompetnence – preterm birth, cervical stenosis obstructed labour
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ACIS with clear margin > management next
Colp at 6 months + Annual screening for 12 months for 3-5 years (clear margins) Positive margins – repeat cone following MDT Consideration of HPV vaccination – improved coverage for other strains
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precocious puberty definition
Precocious puberty is defined as puberty (breast development and menarche in females) before the age of 8 (or 9 in males) development of physical characteristics associated with puberty - onset <8 - menarche <9 Incidence: 4-5%
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Classifications of precocious puberty
Central (gonadotrophic dependent) - early activation of the HPO axis --> pulsatile GnRH secretion --> increased gonadotrophin --> increase sex steroid production = 80% (general normal reproductive life, no association with POI) - Idiopathic - CNS tumour - CNS malformation – hydrocephalus - CNS inflammation/meningitis ==> GnRH stimulation test --> increase LH following test = central (reduced LH/FSH but increase E = peripheral) ==> treatment: GnRH agonist until appropriate age Periperhal (gonadotrophic independent) = lack of GnRH pulsatile release and reduced gonadotrophin (increased E from peripheral source) (often do not have pubic hair as adrenal testosterone is not increased, E dominant) - Adrenal: CAH - replace steroids, 21-OHP deficient, reduced BP/BSL, adrenal crisis, FTT, hyperpigmentation, virilisation - Ovarian: granulosa cell tumour (60%), thecal cell tumour, malignant teratoma - McCune Albright syndrome - spironolactone, cafe au late spots - Exogenous oestrogen
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Precocious puberty Ix
basic: height, weight, growth charts bloods - baseline hormones: , LH, FSH, Estradiol, testosterone, FAI - adrenal: 21 OHP, DHEA, DHEAS, SHBG - endocrine causes: TFT, PRL, IGF-1 - if ovarian mass: AFP + HCG - GnRH stimulation: central vs peripheral imaging - bone age XR - USS pelvis + renal - uterine maturity, ovaries, tumours - MRI/CT head
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precocious puberty treatment
MDT approach – PAG, endocrinology, psychology, GP Explain diagnosis – early puberty and exposure to sex hormones Discuss implications – growth, prolonged oestrogen exposure Discuss importrance of psychology – some evidence to suggest hthat those exposed prematurely to sex hormones have negative impacts eg body image, sexualization Treatment may depend on cause - Ovarian tumour: remove, potential for chemo, referral to GONC - Adrenal tumour: referral for expert management - CNS tumour: referral for expert management - CAH: replace steroids - McCune Allbright: spironolactone Hormone therapy - Hormone suppression required – GnRH suppression to stop or reverse changes important for bone maturation - Add back hormones when appropriate age to trigger menarche
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compare medical vs surgical top
respect of autonomy - Recommend confirmation of IUP prior, exclusion of STI and discussion around contraception medical terminations - generally mifepristone + misoprostol - mifepristone MOA: progesterone receptor antagonist  primes the uterus for misoprostol, increased oxytocin receptors, detaches pregnancy from wall, stops pregnancy growing, cervical priming - misoprostol: PGF1 causes uterine contractions and cervical dilatation and opening to expel product - benefits: similar rates of bleeding, infection, no general anasthetic or surgical complication risk, can be done at home - risks: increased emergency surgeries, increased unplanned hospital admissions, increased retained products - Zhang et al: acceptable, would recommend to others, expulsion rate ~80% - Expulsion rate increased by mifepristone - Faster then expectant management - In Australia done up to 63 days at home and >63 days within a hospital - Exclude contraindications to medications as well as lack of supports or access to emergency care Surgical - Suction D+C or manual vacuum aspiration - Can be done under general, sedation or local depending on hospital, team and patient preference - Risks: general anasthetic, surgical – perforation, asherman, retained product, cervical laceration - Benefits: faster, overall less time bleeding, generally avoids unplanned surgery and repeat surgeries - D+E >K14 based on clinican experience
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perf at suction
Immediately: do not remove suction, turn suction off Notify OT and anasthetics that likely complication, requirement for additional equipment and set up and change of disposition will require admission Call to SMO and ask to attend immediately Conversion to laparoscopy - Primary survey of pelvis and abdomen, Survey of perforation and damage - Remove the suction device - Oversaw perforation - May require general surgery to walk bowel or urology if bladder injury - Iv abx - Photos Documentation - Post operative plan: admit, analgesia - Sent product for histo to confirm POC - Open disclosure including implications for future pregnancies recommend against labouring on uterus - Risk management - Review of own practice - Notify medicolegal insurance
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infertility work up
- confirm ovulation: D2 LH, FSH, E, D21 progesterone - exclude endocrine conditions: TFT, PRL, HbA1c - AMH - PCOS sx: T, SHBG, DHEA, DHEAS - USS pelvis: antral follicle count, structure - check tubal patency: HyCoSy, HSG - antenatal bloods + genetic carrier screening
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MOA climid vs letrozole
Clomid: SERM Letrozole: aromatase inhibitor Reduce E  Increase GnRH Both increase FSH to increase follicular recruitment - why is letrozole better improved pregnancy rates including live birth rate, reduced multiple pregnancy, OHSS, miscarriage theoretic risk of BOT with clomid and less so with letrozole 25% of people don’t respond to clomid
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lap drilling
failed first line management if undergoing laparoscopy if all other pathologies excluded second line * Laparoscopy * Typical protocol * 3-6 punctures bilaterally * 40W coag for 4 seconds * Second-line treatment after failed ovulation induction * Compared with GH ovulation induction * Similar efficacy, fewer multiple pregnancies or OHSS * Likely reduces ovarian production of androgens and proteins which leads to endogenous increase in gonadotrophins * Ovulation occurs in 80% (30-90%) * The normalization of ovulatory function continued for many years in the majority of patients following ovarian drilling
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surgical treatment for adenomyosis
Hysterectomy - MOA: - Risks: prolonged operation, recovery, pain, risk of surgical complication, excludes fertility - Benefits: definitive, histo, risk reduction of BS can be done, no risk of endometrial cancer Endometrial ablation - Burns lining at decidua reducing flow, often combined with mirena - Risks: less likely to work in the setting of adenomyosis, perforation, thermal damage to other structures, is not definitive, high percentage require additional procedure, needs contraception - Benefit: day procedure, fast recovery, reduction in HMB Uterine artery embolization - Mechanism: causes obstruction of uterine artery resulting in ischemia - Risks: immediate – vasovagal, reaction to contrast, short term – post ablation syndrome, infection, bleeding, pain, vte, long term – repeat procedure, necrosis, more likely to fail with adenomyosis - Benefits: day procedure,
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what are the common symptoms of endometriosis
dysmenorrhea dyspareunia infertility pelvic pain hmb less common - bowel sx- dyschezia - fatigue - back pain - sleep disturbance - headache - urinary sx - allergies
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signs of endometriosis
reduced pelvic organ mobility pelvic organ enlargement posterior vaginal wall nodularity pelvic + vaginal tenderness visible vaginal endometriosis lesion
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what is the pathogenesis of PET
#abnormal remodelling spiral arteries - do not become high capacitance and low resistance vessels - defective trophoblast differentiation - placental hypo perfusion, hypoxia, ischemia release of pro-inflammatory cytokines #endothelial dysfunction - increased permeability, increased pro-thrombotic factors, increased vascular tone
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6 antenatal management for previous pre-eclampsia?
#Discussion of recurrence risk and provide written evidence at time of first pregnancy #preconception optimisation exclusion of essential HTN medication review weight management exercise and diet #first trimester - discussion of LDA 150mg and calcium 1g for prophylaxis - reduction in PET by up to 60% with NNT = 60, commence prior to K16 and continue until K34 - risk screening: bloods, Hx, BP in first trimester - ranzcog PET screening recommend: clinical hx and BP at minimum + uss uterine artery pulsatility index and maternal serum biochemical markers (Papp-a + PIGF) - risk factors: pet, ghtn, twins, pre existing DM, chronic renal disease, autoimmune (moderate - AMA, BMI, Fhx, nullip, art, IPI >10yrs) - baseline PET screen SECOND trimester onwards K20-24 UA PI Increased surveillance and high risk clinic – BP and urine checked each visit, growth and wellbeing USS High risk obs for continuity of care Safety netting
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indications for delivery in a woman with PET
HELLP eclampsia persistently elevated HTN despite management signs of fetal compromise signs of abruption APO >K37 persistent neuro sx or signs progressively worsening liver or renal failure
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what are the long term complications of PET
#increased risk of - chronic HTN - cardiac disease - vascular disease - stroke - chronic renal impairment - diabetes - annual check ups for BP and metabolic screening #discuss risk of recurrence - recommend LDA
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recommendations for breast feeding
skin to skin golden hour early breastfeeding targeted breast feeding support antenatal expressing
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What are the physiological and anatomical changes to breast in pregnancy?
Lactogenesis I – 1st + 2nd trimester * Oestrogen o Results in ductal expansion o Deepening of the pigment of the alveolar o Increase in number of lactophins in hypothalamus * Progesterone o Results in alveolar and lobule development * Prolactin o Increased allows for increase in enzymes that would produce milk * High oestrogen and progesterone inhibit prolactin and thus the production of milk * Relaxin – helps expansion of mammary tissue Lactogenesis II – third trimester onwards * Reduction in oestrogen and progesterone remove the inhibition of prolactin * Prolactin  milk production * Oxytocin  milk reflex with contraction of the myoepithelial cells (letdown reflex)
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benefits of breastfeeding
Baby * Bonding * Reduction in GI/ear/renal/resp infections in first few months – passive immunity passage of IgA * Reduction in metabolic syndrome, T2DM and obesity * Reduced SIDs * Reduced NEC * Note: not vitamin D and therefore some countries where less sun exposure babies will be supplemented Mother * Reduced premenopausal breast cancer * Reduced ovarian cancer * Increased weight loss * Cost reduction * Bonding * Reduction in T2DM
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risks of syphilis
fetal: MTCT, congenital syphilis, PTB, miscarriage, FGR, IUFD, NND mother: progression of disease, tertiary/neurosyphilis
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thrombocytopenia levels and obstetrics
<20 risk of spontaneous bleeding, below 50 requires treatment if something is about to happen to mum eg amnio/cvs, labour, high risk PPH 70-80 anasthetics may decline to perform regional anasthetic due to risks of haematoma > benefits <100: increased PPH
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treatment of the neonate with mum having thrombocytopenia
* Maternal plateltts do not correlate to baby’s platelets --> Could consider CS if <50 * <1% risk of IVH * Risk exists once in labour: No FBS, FBS, AVB mid cavity, VAB * Bloods o Cord blood: FBC o Capillary blood at birth and repeated 7/7 * Treatment IVIG * Do not test in utero  cordocentesis 2% fetal loss
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MTP
Experienced MDT including anasthetics  consideration of use of rotem 1 unit pRBC :1 FFP --> once 8 pRBC give 1 unit plt if fibrinogen <2.5 give cry prevent hypothermia, acidosis and hypocalcemia (lethal triad) avoid dilution coagulopathy - limit crystalloid use, ensure plasma and plt given early with pRBC monitor and correct coagulopathy stop the bleeding step-down and deactivate continuous reassessment
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the woman trial
Large multi national multi centre RCT Reduced death from bleeding if given within 3 hours Reduced laparotomy to control bleeding Increased brace sutures No difference in hysterectomy Low resource countries where hysterectomy where most used modality to use pph due to lack of blood and product available, lack of cold chain Thus woman – high resource world many steps prior
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why perform CS at K39
Reduces risk of RDS and TTN/NICU or SCN admission At K37 1:10, K38 1:20, K39 1:100 similar to vaginal delivery background rates Campaign regarding every week counts and avoiding iatrogenic early term deliveries – increasing evidence about neurodevelopmental outcomes improved when delivered K39 - 40
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are two pre-operative principles 12 hours prior for a CS
pre operative optimisation - medical conditions - stop clexane and aspirin - timing of medication documented fasting rules consider pre surgical scrub group and hold, FBC, IVC resources: NICU, cell saver, team, pre op planning
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causes of primary amenorrhea
Hypogonadotrophic hypogonadism o Stress, exercise, eating disorder o Prolactin o Kallman o Constitutional o CNS tumour o Chronic illness Hypergonadoatrophic hypogonadism o Turners o POI - Genetic: turners, fragile X - Autoimmune: TFT, DM, type 1 and 2 polyglandular - Metabolic: galactosemia - Secondary: iatrogenic, chemo/rad, infections, toxins o Swyers Obstructive: imperforate hymen Absent uterus o CAIS 46XY o MRKH 46XX Physiological: pregnancy other: CAH, kleinfelter
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primary amenorrhea Ix
Bedside: Urine HCG – immediately exclude pregnancy Bloods o Hormone profile: LH, FSH, oestradiol, T, FAI – confirm HPO axis o PCOS bloods: DHEAS, SHBG o HCG o Endocrine: PRL, TFT o Adrenal: 17-OHP o Karyotype - POI o Fragile X premutation carrier screening Imaging o USS pelvis: confirm uterus, exclude ovarian masses, exclude mullerian anomaly o XR bone age o Dexa scan once confirmed Special: GnRH test
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two causes of female genitalia with XY chromosome
CAIS 5 alpha reductase deficiency Swyers
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CAIS physiology
XY fetus --> male pattern development with SRY gene --> normal testicular development and AMH present therefore regression of mullein duct BUT lack ability to respond to androgens due to defective androgen receptor --> female external genitalia and CNS #XY female # no mullein structures, no uterus #normal external genitalia - female #viariable extent of vaginal hypoplasia #absent/spares pubic and axillary air #normal breast development - peripheral conversion of androgen to oestrogen #intra abdo testes --> increased T, 5% malignancy risk
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5 medical issues in the management of CAIS
#gonadal tumours - remove 5% risk of malignancy infertility sexual dysfunction - short vagina psych/gender osteoporosis
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Ps of a sexual health consult
Partnership – rapport, ICE, safety screening, culturally safe, non judgemental Privacy Pronouns Partners – number, genders, risk factors Practices/preferences – anal Presenting complaint/symptoms Protection + BBV screening Past hx – previous STI Prevention of pregnancy – contraception, pregnant in past Pap smears
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definition of a uterine fibroid
Benign tumour of smooth muscle and fibroblasts in the myometrium which is derived from a single cell that has undergone genetic mutations with angiogenic growth factors increased.
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symptoms of a fibroid
AUB * HMB * Increased surface area * Altered endometrium above fibroid * Increased angiogenic growth factors * Abnormal vasculature and altered haemostasis Mass effects * Very large subserosal fibroid that could place pressure on surrounding organs o Bladder: urgency, frequency***, retention, recurrent UTI o Bowel: urgency, frequency, pressure, dyschezia o Uterus: dyspareunia * Sensation of mass Pain * Altered contractility * Increased bleeding  cltos  prostaglandin * Degeneration Infertility and pregnancy complications * Altered cavity: impaired implantation and increased miscarriage * Altered endometrium over fibroid: IUGR * Altered contractility: PPH, MROP, CS, labour dystocia * Altered anatomy: malpresentation, increased surgical complicaitons
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infertility work up
* Urine HCG * Bloods: D2 LH, FSH, estradiol, D21 progesterone (confirmation of ovulation), if PCOS sx SHBG, DHEAS, DHEA, FAI, T; PRL, AMH, TFT, HbA1c, if recurrent miscarriage APLS bloods * USS pelvis * Tubal patency: HSG, HyCoSy, dye studies * Semen analysis and consideration of anti sperm DNA * Antenatal bloods
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how fibroids lead to obstetric complications
* Altered cavity: impaired implantation and increased miscarriage * Altered endometrium over fibroid: IUGR * Altered contractility: PPH, MROP, CS, labour dystocia, PTB * Altered anatomy: malpresentation, increased surgical complicaitons * Pain: red degeneration
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risk factors for OHSS
Young age <30 Low BMI <18 High AMH High antral follicle count High number of eggs collected >17 HCG – pregnant, fresh transfer, used for trigger or luteal support Methods of triggering PCOS
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OHSS bloods
Assessment: urine output – oliguria/anuria, tense ascites Bloods * FBC: Hct 0.45 (severe)  0.55 critical, WCC >25 * CRP * UEC: K>5, Na <135, albumin <35 o Osmolality o Check Cr as risk of AKI * HCG level would be important as can risk stratify whether course is going to be protracted and potentially become worse before it gets better USS * Ovarian size >10-12cm * Exclude torsion * Exclude TOA * Exclude IUP and ectopic * Ascites Consider: CXR, CTPA, VBG, ABG, d-dimer, ECG
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OHSS management
Management * Admit patient * Explain OHSS * Explain risks: AKI, VTE, worsening of symptoms, ARDS, cerebral oedema, ovarian torsion, ileus * Supportive cares o Fluid balance - May require albumin for fluid resuscitation but careful with guidance of ICU/medics given patient is third spacing - IDC o Daily abdo girth and weight o Analgesia, avoid NSAIDs risk of AKI o Antiemetics o Daily examination and bloods o If tense ascites +/- AKI consideration of paracentesis o Consideration of drainage of pleural effusions if required o VTE prophylaxis: clexane and TEDS o Daily examination: resp, abdo, calves o Daily bloods o Electrolyte correction o Cardiac monitoring if severe shifts * Disposition depends on a number of factors including stability, some patients are managed in ICU * OT if concerns for torsion * Rehabilitation: physio * Psychosocial supports * If pregnant: may offer termination if significant deterioration in maternal health, if continues pregnancy – high risk pregnancy, offer USS and serial HCG to confirm IUP vs ectopic, referral to MFM – risk of PET
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when use imiquod or laser for vin
When younger patient and distortion of anatomy would not be acceptable or high risk of psychosexual impacts of surgical management High risk area eg clitoris Field effect – multifocal, multiple small lesions Biopsy and histo confirmed no stromal invasion Poor surgical candidate No previous surgery These options to not provide histology
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risks of groin/inguinal lymphadectomy
Short term risks: haematoma, infection, wound breakdown, pain, lymphocele Long term: lymphedema 20-60%, neuropathy, scarring, recurrence, cellulitis, lymphadenitis, ulcer formation, delayed recovery, VTE
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benefits of SLNB
reduced OT time, less invasive, reduce ST and LT implications, reduced complications
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USS features of ovarian cancer
* Solid * >4 papillary projections * Large size * Complex * Thick septations * Ascites * Peritoneal nodules * Bilaterality * Vascular * Adhesions * Omental caking
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ovarian cancer chemo
* carboplatin (renal/oto/bone marrow) and paclitaxel (peripheral neuropathy) – serous or mucinous epithelial - 80% success * BEP – germ cell (lung toxicity) – 90% success
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USS features of ectopic
criteria based on TV USS !!! - CRL >7mm with no FHR - MSD >25mm with no fetal pole - absence of embryo with heart breast >2 weeks after USS that showed GS without YS - absence of embryo with FHR >11 days after USS that showed GS with YS - previous USS that demonstrated fetus with FHR and subsequent that does not 100% specificity and positive predictive value accounts for quality of monographer and radiologist, variations in USS and patient factors like obesity, uterine fibroids and uterine position
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expectant management of miscarriage
often miscarriage occurs spontaneously with onset of period like cramping, vaginal bleeding and passage of tissue success rate - 80% of incomplete in 14 days - 60% of missed in 14 days - success rate less if prolonged loss without expulsion benefits - may avoid surgery and anaesthesia - similar success to medical for incomplete Risks - unpredictable - more days of bleeding and greater amount then surgical - higher rates of unplanned hospital admissions and surgery - risk of DIC is approx 10% at 4 weeks - infection risk increases as time progresses follow up - no limit on how long before called failed - recommend NSAID and paracetamol for pain and safety netting to present to ED if severe pain or soaking >1 pad on 2 consecutive hours - HCG D1 + D8 --> repeat USS if drop <90% - if convincing hx of passage of tissue when woman can perform urine HCG at 3-6 weeks to ensure negative
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medical management of miscarriage
regimen success rate - ~80% but achieved within shorter timeframe 24-48h - use of mifepristone increases success rate - more effective for missed miscarriage than expectant management - if incomplete, no difference between medical and expectant management for rates of completion and need for surgery - success rate less if prolonged loss without expulsion benefits - may avoid surgery and anaesthetise - can be done at home - decreases time to expulsion - increases rate of complete expulsion risks - SE - higher risk of failure compared to surgery - higher rate of unplanned hospital admissions and surgery - 2% risk of bleeding requiring transfussion - 8-9% risk of RPOC requiring evacuation follow up - analgesia - safety netting - HCG D1 + D9 --> repeat uss if not dropped 90% - if convincing hx of passage urine HCG 3-6 weeks post
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surgical management of miscarriage
suction dilation or manual vacuum aspiration success - 99% - cervical priming reduces need for mechanical dilation and decrease OT time benefits - avoids pain and bleeding - fastest - reduced rate of unplanned admissions and emergency surgery - appropriate for those unsuitable for other management - GTD, infection, excessive bleeding, HD instability - appropriate for those at increased risk of haemorrhage or reduced ability to tolerate ir eg bleeding dyscrasia, inability to have blood transfusion, cardiopulmonary disease, anti coagulated risks - overall 6% risk - perf 1:200 - RPOC with repeat D+C 4% - cervical trauma 3% - intrauterine adhesions - AFE follow up - history confirms products
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USS ectopic
* Ranzcog signs and symptoms of ectopic can be diagnosed with o Gestational sac in adnexa with FP/FHR/CRL or with gestational sac in adnexa alone (bagel sign) or inhomogenous mass in adnexa “blob sign” o Separate from CL * Empty uterus * Free fluid in POD
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discriminatory zone
Discriminatory zone: the HCG level which you would expect to see an IUP. In Australia 2000 is used as see 91% of IUP at this level. At 3510 see 99%. This can be impacted by sonographer, USS machine, patient factors – BMI, fibroids, uterine position, declining TV USS
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MOA of stress incontinence
defect with backboard/stability of structures/atrophy  instrincic sphincter dysfunction, urethral hypermobility
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biologics increase risk of what
PTB, IUFD, FGR, misarriage
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peripartum hysterectomy
* Ideally 2 consultants present for MDT decision to be made * Conversion to GA * Replacement of product, keep warm, ensure no electrolyte disturbances * Next of kin notified * Broad ligament: ligated and divided, anterior leaflet of broad opened down to bladder reflection. Bilateral * Clamps placed on the utero-ovarian ligament and fallopian tube – ligated and divided. Medial clamp left on and not removed * Posterior leaflet divided down to uterosacral * Bladder dissected down * Uterine artery ligated, divided and tied * Cardinal ligaments dissected posteriorly * Curved clamp used to get under cervix, cut * Vaginal cuff created and closed * Post operative o ICU vs HDU o VTEp o Recheck bloods o Return of normostasis o IDC out early, mobilisation o Eat and drink o Debrief o Additional GOPD debrief o Psychosocial o Lactation support o Bereavement support if required o M+M o Monitor PND o Letter to GP, give copy to patient
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health impacts of macrosomia
* Mechanism: hyperinsulinaemia  hyperinsulinaemia in the fetus  increases growth and abdominal circumference * Immediate: shoulder dystocia, birth injury – hypoxia, brachial plexus injury, fractures, higher risk of AVB – SGH, low APGAR * Short term: hypoglycemia, NICU admission, RDS, TTN, jaundice * Long term: metabolic syndrome, obesity, T2DM, complications of birth trauma eg CP, HIE Maternal complications: OASI, infection, CS , PPH
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how to avoid macrosomia
* Recommendations prior to ensure no macrosomia: universal screening of GDM, treatment of GDM including low glycemic diet, exercise, induction of labour, prevention of excesive gestational weight gain, in those who are obese consideration of bariatric surgery prior to pregnancy
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risks of influenza
o Maternal: hospitalisation, ICU, death, complications – RDS, pneumonia, sepsis o Fetal: teratogenic effect of fever during first trimester – increased NTD, increased miscarriages, IUFD, PTB, LBW, abruption (increased cytokines) o Incidence: 1-2% of pregnancies  if not vaccinated then 1:2 go to hospital with 10% mortality in pregnancy, 10% ICU vasopressor or resp support o Vaccinated reduces 80%, ED presentation 60% reduction,
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why is a peripartum hysterectomy harder
distended soft cervix engorged dilated pelvic vessels friable oedematous tissue large bulky uterus potentially unstable patient
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why are subtotal hysterectomies done in emergencies?
reduced EBL and pRBC faster reduced intra/postop complications
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complications fo FGM
Short term: haemorrhage, pain, infection, heamatoma, trauma LT: increased UTI, dysmenorrhea, dyspareunia, itch, reduced lubrication obs complications: PPH, CS, obstructed labour, Oasi, episiotomy discuss risks and benefits: anatomical, cosmetic and physiological changes - increased micturition, vaginal discharge, appearance discussed illegal to reinfundibulate
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medical management of ectopic - HCG >3000 <5000
extra dose of MTX