Random Flashcards
(78 cards)
What are the hypothalamic causes of amenorrhoea?
psychological weight loss, stress, exercise endocrine hyperandrogenism (including PCOS) hyperthyroidism hyperprolactinaemia increased oestrogen/progesterone - e.g. hormonal, pregnancy drugs anti psychotics congenital kellman’s syndrome - anosmia with hypothalamic dysfunction
What are the pituitary causes of amenorrhoea?
tumour adenoma prolactinoma cushing's acromegaly non hormonal secreting tumour infection basal meningitis - TB vascular pituitary apoplexy sheehan’s syndrome - hypoperfusion of pituitary after PPH trauma previous surgery or radiation infiltration haemochromatosis
What are the ovarian causes of amenorrhoea?
premature ovarian failure - familial surgery/radiation bilateral torsion ovarian agenesis turner’s syndrome chemotherapy storage diseases mumps
What investigations should you order for amenorrhoea?
LH, FSH, TFT, prolactin, androgens, beta hCG
US if not sexually active
MRI of the pituitary
What are risk factors for placental abruption?
prior history of abruption trauma smoking hypertensive disorders of pregnancy polyhydramnios PPROM first trimester bleeding FGR maternal thrombophilias cocaine/amphetamines
History questions for APH
past obstetric history previous abruptions hypertension previous FGR past gynaecological history pap smears ?cervical ca past medical history hypertension bleeding tendency trauma? MVA domestic violence smoking antenatal investigations 20 week scan - low lying placenta? HOPC what happened what were you doing at the time of the bleed > intercourse? how much blood loss any pain associated with the bleed? contractions? fetal movements felt? ruptured membranes?
Examination for APH
assess for maternal compromise haemodynamic compromise is an obstetric emergency vital signs assess for fetal compromise abdominal palpation tenderness tense > indicates significant abruption uterine contractions symphysis fundal height presentation and lie speculum examination > do not do a VE until praevia has been excluded cervical dilatation visualise a lower genital tract cause
Investigations for APH
FBE coags group and hold UEC LFT kleihauer test US CTG MCA doppler
Management of APH
stabilise
assess conscious state and presence of shock
put in an IV line and take off FBE, group and hold, coags and a kleihauer
continuous CTG - for 4 hours post bleed
transfer
admit
all women with APH heavier than spotting and women with ongoing bleeding should be admitted - at least until bleeding has stopped
corticosteroids for fetal lung maturation if between 24 and 34 weeks gestation
tocolytics
should not be used if patient is haemodynamically unstable or if there is fetal compromise
possibly indicated if needs transfer, if very preterm or if have not had steroids
contraindicated in placental abruption
dont use nifedepine due to risk of maternal hypotension
antenatal care
becomes high risk
perform serial ultra sound for fetal growth
delivery
APH + maternal or fetal compromise > deliver immediately - usually CS unless established labour
delivery is likely necessary if significant abruption
women in labour with active bleeding require continuous electronic fetal monitoring
early elective delivery by CS for women with placenta praevia or vasa praevia
should receive active management of the third stage
give anti D if rhesus negative
Complications of C/S
anaesthesia related aspiration syndrome hypotension spinal headache haemorrhage uterine atony placenta praevia/accreta lacerations urinary tract and gastrointestinal injuries general post op complications ileus atelectasis/pneumonia UTI thromboembolism endomyometritis wound infection increased risk of placenta praevia, accreta, increta, percreta in future pregnancies hysterectomy
When to refer to colposcopy
refer to colposcopy if 2 x LSIL HSIL smear reported as invasive carcinoma, glandular neoplasia, adenocarcinoma suspicious symptoms cervix suspicious of invasive disease
Indications for a cone biopsy
failure to visualise the upper limit of the transition zone in a woman referred with HSIL
suspicion of early invasive cancer on cytology, biopsy or colposcopic assessment
suspected presence of additional significant glandular abnormality on cytology or biopsy (i.e. a mixed lesion)
What antibiotics are given for chorioamnionitis?
ampicillin
gentamicin
metronidozole
What are the contraindications for the OCP?
undiagnosed vaginal bleeding
CV disease, stroke, TIA
? previous VTE
focal migraines - risk of stroke - dont want to add oestrogen
active liver disease
hormone dependent cancer
drug interaction - enzyme inducing drugs chew up hormones - e.g. carbamazepine
if breastfeeding is not well established can make it drop off
Things to counsel a patient on before starting OCP
- things that interfere with efficacy
vomiting and diarrhoea
treat as a missed pill
missing a pill
if not taken in 12 hours of forgetting need to use condoms for next 7 days of active pills
if you’ve just finished seven day break and now missed it - consider morning after pill if unprotected sex - if less than 7 days left then skip placebos
antibiotics
use condoms for 7 days after finishing course - adverse effects
serious - thrombosis - extremely uncommon - increased risk with smoking and weight
common
breast tenderness
nausea
breakthrough bleeding
headaches
mood changes
generally improves after a few weeks but if it continues come back and try a different pill - how to take it
take it every day at the same time
must be taken daily
start in the red section - with your period
definitiely ok not to take the sugar pills and to take active pills continuously - need to use a condom
doesn’t protect against STDs
Benefits of the OCP
contraception less acne less hirsuitism regular periods lighter periods less painful periods timed periods no periods if you wish reduced endometrial cancer, polyps, fibromyomas reduces endometriosis prevents ectopic pregnancy (unlike IUD) reduces ovarian cysts reduces ovarian cancer no change in breast cancer - does not increase the risk with the dose of oestrogen reduces benign breast disease reduces pre menstrual syndrome (progestogen withrdrawl)
Causes of dysmenorrhoea
primary dysmenorrhoea - absence of any organic pelvic pathology - caused by excess endometrial prostaglandins endometriosis adenomyosis intracavity mass - polyp, fibroid cervical stenosis imperforate hymen non communicating uterine horn post endometrial ablation
Management for primary dysmenorrhoea
analgesia NSAIDs e.g. naproxen - inhibit prostaglandin synthesis so are more effective than paracetamol hormonal OCP- thins the endometrium so reduces the amount of arachidonic acid - can also skip periods progestins GnRH analogues surgery hysterecomty acupuncture nifedipine/GTN/buscopan
Management of an ectopic
medical - methotrexate IM 50mg per metre squared of body surface area
surgery - salpingostomy
Indications for surgical management of an ectopic
haemodynamically unstable free fluid on US beta hCG >3000 adnexal mass >3cm fetal heart beat seen on US live far away contraindications to methotrexate
Risk factors for endometrial cancer
oestrogens (exogenous and endogenous) delayed menopause early menarche PCOS obesity tamoxifen oestrogen only HRT smoking Lynch syndrome - may require prophylactic hysterectomy hypertension diabetes (insulin is a trophic growth factor and endometrium has a receptor) family history - bowel cancer, endometrial cancer, ovarian cancer
Management of endometriosis
analgesia NSAIDs reduces prostaglandin production suppress hormonal activity OCP- Suppresses ovulation, reduces growth of endometrial tissue, down-regulates cell proliferation, increases apoptosis of ectopic endometrium.Suppresses ovulation, reduces growth of endometrial tissue, down-regulates cell proliferation, increases apoptosis of ectopic endometrium can be helpful to skip periods progestins- particularly if high cardiovascular risk factors or other contraindications to the OCP - inhibit endometriotic tissue growth, causes decidulisation and atrophy oral primolut (norethisterone) dienogest injectable depot implant implanon IUD mirena hypo oestrogen therapy GnRH analogues down regulates the pituitary-ovarian axis danazol suppresses the pituitary-ovarian axis surgery ablation hysterectomy, oophorectomy etc
Management of fibroids
conservative
nothing if asymptomatic and less than 8cm
medical
non hormonal
NSAIDs for pain relief
tranexamic acid to reduce blood loss
hormonal treatment
OCP, depo provera, implanon
GnRH analogues (to shrink the fibroid pre surgery)
partial progesterone receptor agonist - ulapristil acetate
procedural
embolisation of vessel supplying the fibroid/ablation - contraindicated in women who want children
resection - hysteroscopic
myomectomy - preserves fertility
hysterectomy
Things to do in first antenatal visit
- confirm pregnancy
- confirm gestational age
- screening for any problems
- management of any problems
- general advice
- booking