WOMEN'S HEALTH 1 - Obstetrics Flashcards

(319 cards)

1
Q

What is meant by baby blues? How long does it last for?

A

a period of low mood and irritability, which normally starts three to four days after birth, and lasts for 1-2 weeks.

Symptoms are usually mild, only last a few days and resolve within two weeks of delivery. No treatment is required.

Happens in over 50% of mothers

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2
Q

What is seen in Postnatal depression? How long must symptoms be going on before a diagnosis can be made?

A

a depressive episode within the first twelve months postpartum, peak incidence is 2 months after birth

Postnatal depression is similar to depression that occurs outside of pregnancy, with the classic triad of:

Low mood
Anhedonia (lack of pleasure in activities)
Low energy

Symptoms should last at least two weeks before postnatal depression is diagnosed.

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3
Q

What percentage of mothers experience post natal depression? What screening tools can be used to establish this?

A

Edinburgh Postnatal depression score - Score of 10 or more can indicate depression

Patient Health Questionnaire-9

Around 10% of mothers will experience post natal depression

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4
Q

What is some of the treatment for post natal depression? What would be the medication of choice

A

self-help strategies and non-directive counselling (‘listening visits’ by a health visitor).

Moderate to severe depression usually requires treatment with antidepressant medication and/or psychotherapy (CBT).

Breast-feeding is not a contraindication for antidepressant treatment, but drugs with low excretion in breastmilk, such as sertraline, are preferred.

High levels of Fluoxetine can transfer in breast milk

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5
Q

What is the problem with SSRIs in pregnancy?

A

Can lead to neonatal abstinence syndrome (also known as neonatal adaptation syndrome).

It presents in the first few days after birth with symptoms such as irritability and poor feeding.

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6
Q

What is seen in postpartum psychosis?

A

Postpartum psychosis – 1-2:1000
Depression
Mania
Psychosis

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7
Q

What is the treatment of puerperal psychosis?

A

Admission to the mother and baby unit
Cognitive behavioural therapy
Medications
Electroconvulsive therapy (ECT)

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8
Q

What is the partogram

A

A partogram or partograph is a composite graphical record of key data (maternal and fetal) during labour entered against time on a single sheet of paper. Relevant measurements might include statistics such as cervical dilation, fetal heart rate, duration of labour and vital signs.

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9
Q

Outline what is meant by the terms - alert line and action line in reference to the partogram

A

ALERT Line:
Mean rate of the slowest progress of labour
ACTION Line:
Appropriate action should be taken
If a patient crossed this action line, they were referred into a tertiary unit.

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10
Q

outline some things seen in the partogram

A

The progress of labor:
cervical dilatation, descent of head (-5 to +5)** and uterine contractions
The fetal condition:
fetal heart rate, color of amniotic fluid and moulding of the fetal skull
Maternal condition:
pulse, BP, temperature, urine output and urine for protein
A separate space is given to enter drugs, IV fluids and oxytocin

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11
Q

According ot current guidelines above what dilation is active labour? What is the rate of dilation needed

A

Current UK guidelines based off partogram
Active phase≥4cm
Fixed 1cm/hour alert and action lines

WHO definition
Active phase≥5cm

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12
Q

Name some non pharmalogical pain relief options in labour

A

Water
May help relaxation and contractions feel less painful
Works immediately

TENS
Gentle electric current passes through pads on their back
Can control strength
Mild tingling feeling,reduce backache in early labour

Alternative
Hypotherapy, Acupunucture

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13
Q

Outline the where the pain is coming from in the first and second stages of laboour

A

First stage -
Pain from lower uterine and cervical change
Visceral afferent nerve fibres
T10-L1 Segments

Second stage -
Pain from distension of the pelvic floor, vagina and perineum
Somatic nerve fibres, pelvic splanchnic and pudendal nerve
S2-S4

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14
Q

Give some pharmacological therapies that can be used to help manage labour pain.

A
  1. Gas and air - entonox.
  2. Paracetamol.
  3. Opioids e.g. pethidine, diamorphine.
  4. Epidural.
  5. Spinal anaesthesia.

PCIA - Patient controlled analgesia

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15
Q

Give 3 potential side effects of opioids.

A
  1. Sedation.
  2. Respiratory depression.
  3. Nausea and vomiting.
  4. They cross the placenta readily.
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16
Q

What are some features/considerations for using entonox

A

Nitrous oxide and oxygen
Works immediately, affects stop immediately when you stop using

Spaced out, nauseas,tiring, mouth dry
Don’t use when pushing

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17
Q

Outline some features/considerations when using PCIA

What is the name of the drug used?

A

Patient controlled analgesia

Remifentanil

Requires the patient to press a button everytime they feel a contraction coming
Works within 30s and wears off after a few minutes
Often entonox used as well
Baby – may be slow to breath at first
Mum – sickness, sleepiness, slow breathing, O2 via nasal cannula (pulse ox monitoring)

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18
Q

Outline what an Epidural is.

A

An epidural involves inserting a small tube (catheter) into the epidural space in the lower back. This is outside the dura mater, separate from the spinal cord and CSF.

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19
Q

What level is an epidural normally administered in and what level does it need to be extended to to cover for an emergency CS?

A

T8-T10 for normal pain

Extended up to T4 for Emergency CS

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20
Q

What are some things that may point to epidurals needed to be given in childbirth? What are some things where an epidural is contraindicated?

A

Epidurals may be used to treat maternal conditions that could be worsened by labor and delivery, such as:
Pre-eclampsia
Previous C-section
Breech presentation
Multiple pregnancy
Morbid obesity (BMI ≥40)
Serious cardiovascular or respiratory disease

epidural anaesthesia should reduce blood pressure.

Epidurals are contraindicated in certain situations, including: Severe thrombocytopenia, Coagulopathy, Sepsis, Allergy to (levo)bupivacaine, and Allergy to fentanyl.

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21
Q

What are some drugs given as an epidural? What are some side effects are there of these

A

Anaesthetic options are levobupivacaine or bupivacaine, usually mixed with fentanyl.

Adverse effects:

Headache after insertion
Hypotension
Can take up to an hour to take an effect
Motor weakness in the legs
Nerve damage
Prolonged second stage
Increased probability of instrumental delivery

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22
Q

Until what week can a women legally have an abortion? What act relates to this

A

The legal framework for a termination of pregnancy is the 1967 Abortion Act. The 1990 Human Fertilisation and Embryology Act altered and expanded the criteria for an abortion, and reduced the latest gestational age where an abortion is legal from 28 weeks to 24 weeks.

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23
Q

What are the legal requirements for an abortion?

A

The legal requirements for an abortion are:

Two registered medical practitioners must sign to agree abortion is indicated
It must be carried out by a registered medical practitioner in an NHS hospital or approved premise

There is a conscious clause for doctors in the abortion act

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24
Q

When can an abortion be performed at any time during pregnancy?

A

Continuing the pregnancy is likely to risk the life of the woman
Terminating the pregnancy will prevent “grave permanent injury” to the physical or mental health of the woman
There is “substantial risk” that the child would suffer physical or mental abnormalities making it seriously handicapped

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25
Outline what would happen in a medical abortion - when do they most commonly happen?
most appropriate earlier in pregnancy, but can be used at any gestation. It involves two treatments: Mifepristone (anti-progestogen) Misoprostol (prostaglandin analogue) 1 – 2 day later Mifepristone is an anti-progestogen medication that blocks the action of progesterone, **halting the pregnancy and relaxing the cervix**. Misoprostol is a prostaglandin analogue, meaning it **binds to prostaglandin receptors and activates them.** Prostaglandins soften the cervix and **stimulate uterine contractions.** From 10 weeks gestation, additional misoprostol doses (e.g. every 3 hours) are required until expulsion.
26
Outline what happens in a surgical abortion?
Prime cervix with medciiens - same as the ones used in medical abortion - **Misoprostal and mifepristone** and osmotic dilators that absorb fluid and open cervical canal There are two options for surgical abortion: Cervical dilatation and suction of the contents of the uterus (usually up to 14 weeks) Cervical dilatation and evacuation using forceps (between 14 and 24 weeks)
27
Define puerperium.
The period from placental delivery to 6w after birth - the post-natal period. the period of about six weeks after childbirth during which the mother's reproductive organs return to their original non-pregnant condition.
28
Give 2 endocrine changes that occur during puerperium.
Profound decrease in serum levels of placental hormones (human placental lactogen, hcg, oestrogen and progesterone) Increase of prolactin - as placenta is delivered
29
Give 3 physiological changes that occur during puerperium.
Involution of the uterus. **uterus returning to pre pregnant state** Decidua sheds as lochia. - **decidua -maternal uterine tissue** Lactation.
30
Define Gravidity and Parity?
Gravidity = total number of pregnancies regardless of outcome, Parity = total number of pregnancies carried over the threshold of viability (24w)
31
Give 6 physiological changes that occur during pregnancy?
ncreased blood volume, increased cardiac output, increased stroke volume, increased heart rate, Pulmonary ventilation up by 40%, tidal volume from 500 - 700ml (due to effect of progesterone on respiratory centre) Oxygen requirements increase by only 20%, therefore over breathing leads to a fall in pCO2 - this can give rise to a sense of dyspnoea that may be accentuated by elevation of the diaphragm Maternal blood volume up 30%, mostly in 2nd half red cells up 20% but plasma up 50% → Hb falls Low grade increase in coagulant activity rise in fibrinogen and Factors VII, VIII, X Biochemical changes calcium requirements increase during pregnancy especially during 3rd trimester + continues into lactation increased intra-gastric pressure, decreased gut motility, increased fibrinogen and clotting factors, increased total T3 T4 levels, increased uterine size
32
Describe the physiology behind the involution of the uterus
There is muscle ischaemia, autolysis and phagocytosis -> involution of the uterus. - becomes fibrous tissue - more prone to rupture in future prengancies If can still feel uterus above belly button after a couple of days, be concerned eg Endometrisus
33
The decidua sheds as lochia, what are the three stages of this process called? How long does this take?
1. Lochia rubra. 2. Lochia serosa. 3. Lochia alba. RSA Generally lasts 4-6 weeks
34
What is the name of the breast milk that is produced at birth?
Colostrum.
35
What does colostrum contain?
- Protein rich. - Vitamin A. - NaCl. - GF's. - Antibodies. - Lactoferrin.
36
Briefly describe the physiology of lactation.
Baby suckles -> nipples send impulses to brain -> prolactin is released from the ant.pituitary -> milk is produced by lactocytes -> oxytocin is released from the post.pituitary -> myoepithelial contraction -> milk ejection. – Oxytocin –> stimulates milk ejection from the breast as well as uterine contractions Anterior first (Prolactin), then posterior (Oxy)
37
Give some benefits for mother and baby of breastfeeding
Maternal: – Faster uterine involution, bonding, contraception, – Protection from breast/ovarian/endometrial cancer. Infant: – Lower incidence of diarrhoea, necrotising enterocolitis (NEC), – Lower incidence of otitis media and respiratory tract infections Milk contains all the nutrients the infant needs (except vitamin D and K) up till 6 months of age.
38
Name 3 minor things that women are at risk of during puerperium.
1. Infection. 2. Haemorrhage. 3. Fatigue. 4. Anaemia. 5. Back pain. 6. Haemorrhoids.
39
Name 3 major things that women are at risk of during puerperium.
1. Sepsis. 2. Sever haemorrhage. 3. Pre-eclampsia. 4. VTE. 5. Prolapse. 6. Incontinence. 7. Depression.
40
Give 3 risk factors for sepsis in pregnancy.
1. Obesity. 2. Anaemia. 3. Diabetes. 4. Amniocentesis/invasive procedures .Impaired immunity/ immunosuppressant medication 5. Prolonged spontaneous rupture of membranes Group A Strep infection in close contacts / family members History of pelvic infection History of group B Strep infection
41
What can infections can lead to sepsis in pregnancy?
1. Endometritis. 2. Skin infections. 3. Pyelonephritis. 4. Chorioamnionitis. 5. Pneumonia.
42
Define PPH.
Post-partum haemorrhage: >500ml estimated blood loss after **birth of baby.**
43
Define major PPH.
>1500ml blood loss and continuing to bleed/signs of shock. For a woman of 70kg a blood loss of more than 40% of her total blood volume (2,800mls) is generally regarded as life threatening Either primary - within first 24 hours (most often immediately after delivery) or secondary - After 24 hours and up to 12 weeks post delivery
44
What are some causes of a primary Post partum haemorrhage?
Tone (uterine atony most commonly) Trauma (large baby) Thrombus (clots) Tissue (fibroids) – In addition, it can be caused by abnormalities of the placenta (placenta previa/accrete) *Uterine atony = soft and weak uterus after childbirth. It happens when your uterine muscles don’t contract enough to clamp the placental blood vessels shut after childbirth*
45
What is the management of a post partum haemorrhage?
Bloods for FBC, U&E and clotting screen Group and cross match 4 units Warmed IV fluid and blood resuscitation as required Oxygen (regardless of saturations) Fresh frozen plasma is used where there are clotting abnormalities or after 4 units of blood transfusion
46
Outline the treatment to help stop the bleeding in a post partum haemorrhage
1st line –> Apply bimanual compression (pressure aims to compress uterine arteries) with fundal massage – 2nd line is medical management –> IV syntocinon/Syntometrine (oxytocin) 10 units or IM ergometrine (strong vasoconstrictor) – You can also use IM Carboprost (Haemobate) (prostaglandin which aids uterine contraction) **avoid in asthama!** Tranexamic acid (intravenous) is an antifibrinolytic that reduces bleeding If still bleeding take to operating theatre for surgical approaches. – 1st line is Bakri balloon tamponade (also called intra-uterine Bakri catheter)–> used if uterine atony is main cause – If uncontrolled, B-lynch suture or uterine artery embolism – If still not controlled –> ligate internal branch of the internal iliac artery – Last resort is hysterectomy
47
What is secondary PPH? What can cause it?
Secondary postpartum haemorrhage is where bleeding occurs from 24 hours to 12 weeks postpartum. This is more likely to be due to retained products of conception (RPOC) or infection (i.e. endometritis).
48
What are some investigations for Secondary PPH and outline the management of it
Investigations involve: Ultrasound for retained products of conception Endocervical and high vaginal swabs for infection Management depends on the cause: Surgical evaluation of retained products of conception Antibiotics for infection
49
Give 5 risk factors for VTE in pregnancy.
1. Increasing gestational age. 2. Obesity. 3. Smoking. 4. C-section. 5. Family history. 6. Immobility. 7. Multiple pregnancy e.g. twins. 8. Previous VTE.
50
When is a woman at the greatest risk of VTE?
The risk is greatest just after giving birth, in the post partum period.# Pregnant woman with a previous VTE history: LMWH throughout pregnancy until 6 weeks postnatal enoxaparin
51
What medication can be given postnatally to reduce a woman's risk of VTE?
LMWH. eg Enoxaparin or Dalteparin TED stockings. Pregnant woman with a previous VTE history: LMWH throughout pregnancy **until 6 weeks postnatal**
52
What is the investigations you would do in a pregant women with a suspected DVT?
Doppler ultrasound TOM TIP: The Wells score is not validated for use in pregnant women. D-dimers are not helpful in pregnant patients, as pregnancy is a cause of a raised D-dimer.
53
What are the investigations you would do in a suspected PE in a pregnant women?
Women with suspected pulmonary embolism require: Chest xray ECG CT pulmonary angiogram (CTPA) or ventilation-perfusion (VQ) scan. VQ scan - inhale isotpes and compare the ventilation and perfusion of the lungs - In PE will be a deficit in perfusion, as the thrombus blocks blood flow to the lung tissue.
54
What is the management of a massive PE in a pregnant women
Women with a massive PE and haemodynamic compromise need immediate management by an experienced team of medical doctors, obstetricians, radiologists and others. treat with **LMWH first (eg enoxaparin)** then investigate to rule in/out ***Unfractionated heparin*** Thrombolysis Surgical embolectomy
55
Describe the physiology behind a post dural puncture headache?
Accidental dural puncture -> CSF leakage and decreased pressure in fluid around the brain.
56
How would you treat a post dural puncture headache?
Lying flat! Simple analgesia Fluids and caffeine?? **Epidural blood patch** - *injecting a bit of patients own blood into epidural sapce to stop leak of CSF*
57
Define sepsis. Define septic shock
Sepsis is a condition where the body launches a large immune response to an infection, causing large **systemic inflammation** and affecting the functioning of the organs of the body Septic shock is defined when arterial blood pressure drops and results in organ hypo-perfusion.
58
What are the two key causes of sepsis in pregnancy?
Chorioamnionitis Urinary tract infections
59
What is chorioamnionitis? What is its most common cause
Chorioamnionitis is an infection of the chorioamniotic membranes (what makes up the sac that surrounds the embryo) and amniotic fluid. E coli is most common
60
What are some key features of sepsis?
(3Ts white with sugar) Temperature <36 or >38 degrees Tachycardia -Heart rate > 90bpm (PN) Tachypnoea - Respiratory rate > 20bpm WCC >12 or <4 x 109/l Hyperglycaemia >7.7mmol Low blood pressure Altered consciousness Reduced urine output
61
What is the some of the management steps for dealing with maternal sepsis?
Bloods cultures Urine output Fluid Resuscitation Antibiotics Lactate Oxygen piperacillin and tazobactam (tazocin) plus gentamicin, or amoxicillin, clindamycin and gentamicin. Continuous maternal and fetal monitoring is required. Depending on the condition of the mother and fetus, early delivery may be needed. Emergency caesarean section may be indicated when there is fetal distress, guided by a senior obstetrician. General anaesthesia is usually required for women with sepsis, as spinal anaesthesia is avoided.
62
What is an ectopic pregnancy? Where does it most commonly occur, and where is the most common site of ruputre/most dangerous?
Is when a pregnancy is is implanted outside the uterus, the most common site fallopian tube. **(specifically the ampulla)** **most dangerous if in the the isthmus** Can also occur at the entrance to the fallopian tube, ovary, cervix or abdomen
63
What are sime risk factors for an ectopic pregnancy?
Previous ectopic pregnancy **Previous PID** Previous surgery to the fallopian tubes Black ethnicity **Intrauterine devices!!** Older age Smoking Endometriosis The **progesterone only pill is a risk factor** because it slows the passage of the ovum through the fallopian tube. *in 1/3 of ectopic pregnancies, there will be no risk factors*
64
How may an ectopic pregnancy present? What is the recurrance rate of one ectopic pregnacy?
typically presents around 6 – 8 weeks gestation. Have a low threshold for suspecting an ectopic pregnancy, even in atypical presentations. can be asymptomatic Missed period Constant lower abdominal pain in the right or left iliac fossa Shoulder tip pain (referred pain from the diaphragm) Vaginal bleeding Lower abdominal or pelvic tenderness Cervical motion tenderness (pain when moving the cervix during a bimanual examination) 18.5%
65
What is the investigation of choice for an ectopic pregnancy? What would you see on this?
Serum HCG - pregnancy test BhCG <63% increase over 48h FBC, clotting, - to see if haemodynamically stable A transvaginal ultrasound scan - gestational sac containing a yolk sac or fetal pole may be seen in a fallopian tube. When a mass containing an empty gestational sac is seen, this may be referred to as the “blob sign”, “bagel sign” or “tubal ring sign A mass representing a tubal ectopic pregnancy **moves separately to the ovary.** *(a corpus luteum will look similar to this, but will move with the ovary)* Fluid in the uterus, which may be mistaken as a gestational sac (“pseudogestational sac”) = so is not diagnostic of an ectopic serum b-HCG can also be performed
66
What is a pregnancy of unknown location?
When a women has a positive pregnancy test and there is no evidence of pregnancy on an ultrasound scan
67
How do you monitor a PUL? What does HCG levels do in an intrauterine pregnacy vs an ectopic or misscarriage?
it is **important to obtain a baseline and repeat beta hCG in 48hrs.** In an intrauterine pregnancy hCG will double every 48 hours, it won’t in an miscarriage or ectopic pregnancy . Once levels are above 1500 should be able to see on USS A fall of more than 50% is likely to indicate a miscarriage
68
What is the management for an ectopic pregnancy?
Women with pelvic pain or tenderness and a positive pregnancy test need to be referred to an early pregnancy assessment unit (EPAU) or gynaecology service. All ectopic pregnancies need to be terminated. An ectopic pregnancy is not a viable pregnancy. 3 options Expectant management (awaiting natural termination, conervative) Medical management (methotrexate) Surgical management (salpingectomy or salpingotomy) *(Methotrexate: must be stopped at least 6 months before conception in both men and women)*
69
Ectopic pregnancies - What is the criteria for expectant management?
Follow up needs to be possible to ensure successful termination Patient must be clincally stable and pain free The ectopic needs to be unruptured Adnexal mass < 35mm No visible heartbeat No significant pain **HCG level < 1000 IU / l** - repeat hCG on day 2, 4, 7 - should fall my 15% within 7 days , repeat weekly unitl IUL is <20
70
What are some things to consider when giving methotrexate to manage an ectopic pregnancy? When would it be appropriate to give? *(Methotrexate: must be stopped at least 6 months before conception in both men and women)*
Methotrexate is highly teratogenic (harmful to pregnancy). It is given as an intramuscular injection into a buttock. Give if size is <35mm No fetal Heartbeat **hCG <1,500IU/L** can only be done if the patient is willing to attend follow-up. Women treated with methotrexate are advised not to get pregnant for 3 months following treatment. Vaginal bleeding Nausea and vomiting Abdominal pain Stomatitis (inflammation of the mouth)
71
What are the indications for surgical management of an ectopic pregnancy?
Pain Adnexal mass > 35mm Visible heartbeat **HCG levels > 5000 IU / l** Laparoscopic salpingectomy = remove affected fallopian tube - is first-line for women with no other risk factors for infertility Laparoscopic salpingotomy - used in women at increased risk of infertility due to damage to the other tube. The aim is to avoid removing the affected fallopian tube - just remove ectopic pregnancy *around 1 in 5 women who undergo a salpingotomy require further treatment (methotrexate and/or a salpingectomy)*
72
What is a miscarriage defined by? In what % of pregnacies does a miscarriage occur?
Miscarriage is the spontaneous termination of a pregnancy. Early miscarriage is before 12 weeks gestation. Late miscarriage is between 12 and 24 weeks gestation.# Occurs in 20% of pregnancies
73
Define what a missed miscarriage is
the fetus is no longer alive, but no symptoms have occurred
74
Define what a Threatened Inevitable miscarriage is
Threatened miscarriage – vaginal bleeding with a closed cervix and a fetus that is alive Inevitable miscarriage – vaginal bleeding with an open cervix
75
Define what an Incomplete Complete Miscarriage is
Incomplete miscarriage – retained products of conception remain in the uterus after the miscarriage Complete miscarriage – a full miscarriage has occurred, and there are no products of conception left in the uterus
76
Give some potential causes of miscarriage
Abnormal foetal development. Uterine abnormality. Incompetent cervix. Placental failure. Multiple pregnancy. Think structures (uterus, placenta, cervix not working properly)
77
Give some risk factors for miscarriage.
Age >30. Smoking. Excessive alcohol consumption. Uterine surgery. Poorly controlled diabetes.
78
What investigations might you do to determine whether someone has had a miscarriage?
Transvaginal USS. Serum hCG.
79
Describe the management of a miscarriage.
missed miscarriage = oral mifepristone. 48 hours later, misoprostol (vaginal, oral or sublingual) unless the gestational sac has already been passed incomplete miscarriage = a single dose of misoprostol (vaginal, oral or sublingual) women should be offered antiemetics and pain relief a pregnancy test should be performed at 3 weeks Vaginal misoprostol. *(helps stimulate uterine contractions, to make sure everything is delivered)* If there is evidence of infection and haemodynamic instability in the context of a miscarriage, surgical intervention with **vacuum aspiration** would be an appropriate surgical management Manual vacuum aspiration. Counseling and support.
80
What are identical twins known as? What are non identical twins known as?
Monozygotic: identical twins (from a single zygote) Dizygotic: non-identical (from two different zygotes)
81
What terms describe whether a placenta and amniotic sack are shared or separated for twins? What combination has the best outcome?
Monoamniotic: single amniotic sac Diamniotic: two separate amniotic sacs Monochorionic: share a single placenta Dichorionic: two separate placentas The best outcomes are with diamniotic, dichorionic twin pregnancies, as each fetus has their own nutrient supply.
82
How is multiple births diagnosed?
on the booking ultrasound scan. Ultrasound is also used to determine the: Gestational age Number of placentas (chorionicity) and amniotic sacs (amnionicity) Risk of Down’s syndrome (as part of the combined test)
83
What are some maternal complications of having a multiple birth?
Anaemia Polyhydramnios Hypertension Malpresentation Spontaneous preterm birth Instrumental delivery or caesarean Postpartum haemorrhage
84
What are some foteal/neonatal complications of a multiple birth?
Risks to the fetuses and neonates: Miscarriage Stillbirth Fetal growth restriction Prematurity Twin-twin transfusion syndrome Twin anaemia polycythaemia sequence Congenital abnormalities
85
Outline what happens in Twin-twin transfusion syndrome and Twin anaemia polycythaemia sequence
occurs when the fetuses share a placenta. one fetus (the recipient) may receive the majority of the blood from the placenta, while the other fetus (the donor) is starved of blood. The recipient gets the majority of the blood, and can become fluid overloaded, with heart failure and polyhydramnios. The donor has growth restriction, anaemia and oligohydramnios. Twin anaemia polycythaemia sequence is similar to twin-twin transfusion syndrome, but less acute. One twin becomes anaemic whilst the other develops polycythaemia (raised haemoglobin).
86
Name some obstetric conditions that obesity is a huge risk factor for
Pre-eclampsia Sepsis Shoulder Dystocia Gestational diabetes
87
Name 3 reproductive disorders that are associated with obesity.
PCOS. Miscarriage. Infertility.
88
Outline some physiological changes that happen to glucose metabolism in pregnant women.
Glucose tolerance decreases with increasing gestation after the first trimester Largely due to anti-insulin hormones secreted by the placenta in normal pregnancy (human placental lactogen, glucagon and cortisol)
89
What can an increased glucose tolerance seen in prengancy lead to?
Normal women show an approx. doubling of insulin production from the end of the first trimester to the third trimester Likely to underlie the increased insulin requirements of women with existing diabetes Lead to the development of abnormal glucose tolerance in gestational diabetes - where there is insufficient insulin secretion to compensate for the insulin resistance
90
What is Gestational diabetes, and what are some risk factors for getting it?
Gestational diabetes refers to diabetes triggered by pregnancy. It is caused by reduced insulin sensitivity during pregnancy, and resolves after birth. Previous gestational diabetes Previous macrosomic baby (≥ 4.5kg) BMI > 30 Ethnic origin (black Caribbean, Middle Eastern and South Asian) Family history of diabetes (first-degree relative)
91
What tests do you do to screen for gestational diabetes, if there are risk factors? What week gestation do you do it?
**Oral Glucose Tolerance Test** An OGTT should be performed in the morning after a fast (they can drink plain water). The patient drinks a 75g glucose drink at the start of the test. The blood sugar level is measured before the sugar drink (fasting) and then at 2 hours. screening is offered at **24-28 weeks,** Normal results are: Fasting: < 5.6 mmol/l At 2 hours: < 7.8 mmol/l Results higher than this suggest gestational diabetes remember the cutoff for gestational diabetes as simply 5 – 6 – 7 – 8.
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What is the management of women with gestational diabetes?
The initial management suggested by the NICE guidelines (2015) is: **Fasting glucose less than 7 mmol/l (5.6-7): trial of diet and exercise for 1-2 weeks, followed by metformin, then insulin** Fasting glucose above 7 mmol/l: start insulin ± metformin Fasting glucose above 6 mmol/l plus macrosomia (or other complications): start insulin ± metformin Gestational diabetes is treated with **short-acting**, but not longer-acting SC insulin . Long-acting insulin is not preferred in pregnancy as it may be associated with adverse birth outcomes. Equally, it may lead to maternal hypoglycaemia. Short-acting alone gives better post-prandial glucose control and is more flexible in terms of responding to the different day-to-day diets of a pregnant woman.
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What is some of the obstetric management seen in women with diabetes?
Monitoring for pre-eclampsia with regular BP and urine checks Regular fetal growth scans (usually 28, 32 and 36 weeks) – to assess fetal size, growth velocity and enable delivery planning Timing of delivery – induction of labour or planned caesarean section For uncomplicated GDM – delivery by 40+6 For complicated GDM – 37 – 38+6 Intrapartum care Fetal monitoring Hourly monitoring of blood glucose May need variable rate insulin infusion to maintain blood glucose
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What is some medication that is given to woman with Diabetes 1 or 2 when they are pregnant? What key screening is offered?
Aspirin 150mg once daily from 12 weeks until delivery – to reduce risk of pre-eclampsia Folic acid 5mg ideally from preconception (or as early as possible) until 14 weeks Retinopathy screening should be performed shortly after booking and at 28 weeks gestation. Diabetes carries a risk of rapid progression of retinopathy, and interventions may be required. Aspirin should be stopped before delivery, as it is contraindicated in breast feeding
95
What are some complications of gestational diabetes?
macrosomia and neonatal hypoglycaemia. macrosomia poses a risk of shoulder dystocia
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What are some fetal problems assossciated with maternal diabetes? Why are foetus in mothers w gestational diabetes macrosomic?
congenital malformations Intrauterine growth restriction macrosomia =maternal hyperglycaemia causes fetal hyperglycaemia as glucose crosses the placenta, foetus secretes more insulin that promotes growth An increase in foetal blood glucose brings about a hyperinsulinaem ia in the foetus, leading to increased fat deposition.
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What are some neonatal problems associated with maternal diabetses
* **hypoglycaemia** * **respiratory distress syndrome** – more common as lung maturation is delayed * **hypertrophic cardiomyopathy** – hypertrophy of the cardiac septum occurs in some infants. It regresses over several weeks but may cause heart failure from reduced left ventricular function * **polycythaemia** (venous haematocrit >0.65) – makes the infant look plethoric. (plethora = polycythaemia of newborns)**
98
What are some causes of primary hypertension?
It has **multifactorial aetiology** Genetic factors – can run in families 40%-60% have a genetic component Foetal factors – low birth weight is associated with hypertension Obesity High alcohol Alcohol intake Insulin intolerance Lack of physical activity Metabolic Syndrome X *cluster of conditions, such as high insulin levels, glucose intolerance, low levels of HDLs, central obesity*
99
What are some main causes of secondary hypertension?
○ Renal e.g. CKD ○ Endocrine e.g. Conn’s syndrome, acromegaly, Cushing’s syndrome ○ Coarctation of the aorta ○ Pre-eclampsia occurring during third trimester of pregnancy
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Outline the pathophysiology behind some of the issues that hypertension does to the body.
Hypertension - Causes arteries to common less compliant, and narrowing of the lumen Can lead to Hyaline arteriosclerosis, which is protein deposition in the arterial wall, Lead to atherosclerosis and aneurysms forming - stroke Endothelial damage = CAD, ACS
101
Hypertension medication - what is the first line treatment for someone who is NOT black, and under 55 years
ACE-Inhibitor e.g. Ramipril (or angiotensin receptor blocker e.g. candesartan if contraindicated e.g. due to cough)
102
Hypertension medication - what is the first line treatment for someone who is black, or over 55 years
calcium channel blocker e.g. amlodipine
103
Hypertension medication - what is the second line treatment for hypertension?
ACE-inhibitor + CCB Or if afro Caribbean - CCB and ARB/ACEi or Thiazide like Diuretic
104
What is the first line medication given to anyone with T2DM, regardless of age or race?
ACEi, eg Ramipril
105
Hypertension medicine - when would a Angiotensin receptor blocker be given? Give a example of one
eg Candesartan It's given instead of an ACE-inhibitor, if a ACE-i is contraindicated. You give ACE-i to anyone who is younger than 55, or not Black afro Caribbean, or someone with Diabetes at any age .
106
Define chronic hypertension. *time frames!*
A patient with high BP which is diagnosed **prior to pregnancy or before week 20 of pregnancy** Their high BP is **not resolved** postpartum.
107
Define gestational hypertension. *time frames!*
New high BP after 20w gestation and resolves after giving birth. There is no proteinuria or end organ damage
108
Define preeclampsia and eclampsia - what is the triad seen in preeclampsia?
Pre-eclampsia is defined as **new-onset BP ≥ 140/90 mmHg** after ***20 weeks*** AND ≥ 1 of proteinuria, organ dysfunction Pre-eclampsia features a triad of: Hypertension Proteinuria Oedema Can also see Severe headache, visual disturbance, clonus, liver tenderness, abnormal liver enzymes,. plate count low Eclampsia is when seizures occur as a result of pre-eclampsia.
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Outline the pathophysiology behind pre eclampsia
Pre-eclampsia is caused by high vascular resistance in the spiral arteries and poor perfusion of the placenta. This causes oxidative stress in the placenta, and the release of inflammatory chemicals into the systemic circulation, leading to systemic inflammation and impaired endothelial function in the blood vessels. Pre-eclampsia is defined as new-onset BP ≥ 140/90 mmHg after 20 weeks AND ≥ 1 of proteinuria, organ dysfunction
110
HWhat are some risk factors for preeclampsia?
High-risk factors are: Pre-existing hypertension Previous hypertension in pregnancy Existing autoimmune conditions (e.g. systemic lupus erythematosus) Diabetes Chronic kidney disease Moderate-risk factors are: Older than 40 BMI > 35 More than 10 years since previous pregnancy Multiple pregnancy First pregnancy Family history of pre-eclampsia GIve aspirin for either 1 high risk or 2 low risk factors
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What are some symptoms of preeclampsia?
Headache Visual disturbance or blurriness Nausea and vomiting Upper abdominal or epigastric pain (this is due to liver swelling) Oedema Reduced urine output Brisk reflexes
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How can a diagnosis of pre-eclampsia be made? When would preeclamptic mothers need to go to hospital?
The NICE guidelines (2019) advise a diagnosis can be made with a: Systolic blood pressure above 140 mmHg Diastolic blood pressure above 90 mmHg PLUS any of: Proteinuria (1+ or more on urine dipstick) Organ dysfunction (e.g. raised creatinine, elevated liver enzymes, seizures, thrombocytopenia or haemolytic anaemia) Placental dysfunction (e.g. fetal growth restriction or abnormal Doppler studies) Pregnant women with blood pressure ≥ 160/110 mmHg are likely to be admitted and observed . Since pre-eclampsia is being considered the GP should refer the patient to the nearest obstetric emergency department.
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What is the prophlyatic managment of pre eclampsia, and when would you give it?
**Aspirin** is used for prophylaxis against the development of pre-eclampsia. It is given from ***12 weeks gestation until birth to women with:*** A single high-risk factor Two or more moderate-risk factors *aspirin is CI in breastfeeding btw*
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What are some risk factors for pre eclampsia, that would warrant giving aspirin 75-150mg daily from 12 weeks gestation until the birth A single high-risk factor Two or more moderate-risk factors
High risk factors hypertensive disease in a previous pregnancy chronic kidney disease autoimmune disease, such as systemic lupus erythematosus or antiphospholipid syndrome type 1 or type 2 diabetes chronic hypertension Moderate first pregnancy age 40 years or older pregnancy interval of more than 10 years body mass index (BMI) of 35 kg/m² or more at first visit family history of pre-eclampsia multiple pregnancy
115
What is the management of pre-eclampsia?
Labetolol is first-line as an antihypertensive Nifedipine (modified-release) is commonly used second-line (needs to be rapidly acting) Treat coagulation defects, Check bloods, eg platelet, renal and liver magnesium sulphate if hyperreflexia (also prevents seizures in pregnant woman w eclampsia) **Respiratory rate is the most important parameter to monitor when administering magnesium sulphate for eclampsia, as it can cause respiratory depression** Planned early birth may be necessary if the blood pressure cannot be controlled, or decline in liver or renal function ***(monitor these closely)*** ^**This should resolve the pre eclampsia** Corticosteroids should be given to women having a premature birth to help mature the fetal lungs. Limit fluid intake as low protein, so extra fluids can cause oedema
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What are some complicatons of pre eclampsia?
Fetal growth restriction. Preeclampsia affects the arteries carrying blood to the placenta Preterm birth. Placental abruption. hemolysis elevated liver enzymes and low platelet count (HELLP) syndrome. Eclampsia. Stroke Renal Failure oligohydramnos
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How do you manage eclampsia? Whats the key parameter you need to monitor with this medication, and how could you reverese it if needed?
Eclampsia refers to the seizures associated with pre-eclampsia. IV magnesium sulphate ***(4g vein over 15 minutes, followed by an infusion of 1g/hour maintained for 24 hours)*** is used to manage seizures associated with pre-eclampsia. **any seizure in a pregnant woman are always eclampsia until proven otherwise** **Respiratory rate** is the most important parameter to monitor when administering magnesium sulphate for eclampsia, as it can cause respiratory depression - **reverse with Calcium Gluconate**
118
What acronym syndrome can occur as a complication of preeclampsia and eclampsia?
HELLP syndrome is a combination of features that occurs as a complication of pre-eclampsia and eclampsia. It is an acronym for the key characteristics: Haemolysis Elevated Liver enzymes Low Platelets
119
How can pregnancy affect anaemia
2-fold increase in iron requirements -> micro-cytic aneamia. B12/folate deficiency -> macrocytic anaemia. During pregnancy, the plasma volume increases. This results in a reduction in the haemoglobin concentratio
120
What are the normal ranges for hemoglobin during pregnancy?
Booking bloods > 110 g/l 28 weeks gestation > 105 g/l Post partum > 100 g/l
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What pregeancy related causes can be indicated in a normal/high/low MCV anaemia?
Low MCV may indicate iron deficiency Normal MCV may indicate a physiological anaemia due to the increased plasma volume of pregnancy Raised MCV may indicate B12 or folate deficiency
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What is the management of anaemia in pregancy? How much folate should pregnant woman take a day? What groups need more How do you take folate for
iron replacement (e.g. ferrous sulphate 200mg three times daily). not anaemic but low ferritin - supplementary iron. . Women with low B12 should be tested for pernicious anaemia (checking for intrinsic factor antibodies). -Intramuscular hydroxocobalamin injections All women should already be taking folic acid 400mcg per day. Women with folate deficiency are started on folic acid 5mg daily *Women on antiepileptics, who try to conceive, should receive folic acid 5mg instead of 400mcg OD* Diabetics, those with thalasseamia trait, coeliac disease also need 5mg of folic acid as well as do obese pregnant women (>30BMI) folic acid daily until the 13th week of pregnancy, **(for the first trimester only)**
123
What are the symptoms of gonorrhoeae?
Asymptomatic (50%) Malodorous, purulent discharge from the urethra, cervix, vagina,3 to 5 days after exposure (40% to 60%) Simultaneous urethral infection (70% to 90%) Infection of the pharynx (10% to 20%) Gonococcal conjunctivitis (can rapidly lead to blindness) Polyarthritis Later on, can cause intermenstraul bleeding, pain when weeing, and lead to PID - which can lead to problems with fertililty
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What test do you use to diagnose Gonorrhoea?
Male - urine, or urethreal swab if discharge - Female - Swab of endocervical cannal Rectum NAAT testing for both if not Microscopy of gram stained smears of genital secretions looking for gram negative diplococci within cytoplasm of polymorphs Culture on **Gonococcus agar**
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What is the treatment for gonorrhoea?
A single dose of intramuscular ceftriaxone 1g if the sensitivities are NOT known A single dose of oral ciprofloxacin 500mg if the sensitivities ARE known
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What prophylactic antibiotic do we give to women going into labour who have group B streptococcal colonisation, bacteriuria or infection during the current pregnancy, or a clinical diagnosis of chorioamnionitis
Women without chorioamnionitis Use Benzylpenicillin. Women with chorioamnionitis Use Benzylpenicillin plus gentamicin plus metronidazole. Gentamicin = Aminoglycoside (For gram neg) Metronidazole = For anaearobic cover
127
What are some consquences for mother and neonate of a chlamydia infection?
Mother - Can be Asymptomatic Preterm labor Chorioamnionitis PID For neonate - Conjunctivitis Pneumonia
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What is the treatment for chlamydia?
1-week oral doxycycline (a tetracycline) Pregnant – oral erythromycin (14 days) or oral azithromycin - (macrolides)
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What bacteria causes syphillis?
Syphilis is caused by bacteria called Treponema pallidum. This bacteria is a spirochete, a type of spiral-shaped bacteria.
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What are the stages of Syphilis?
Primary syphilis **involves a painless ulcer called a chancre at the original site of infection** Secondary syphilis Latent syphilis *symptoms disappear and the patient becomes asymptomatic despite still being infected.* Tertiary syphilis Neurosyphilis occurs if the infection involves the central nervous system
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What would someone with primary syphilis present with?
A painless genital ulcer (chancre). This tends to resolve over 3 – 8 weeks. Local lymphadenopathy
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What would someone with secondary syphilis present with?
ypically starts after the chancre has healed, with symptoms of: Maculopapular rash **Condylomata lata** (grey wart-like lesions around the genitals and anus) Low-grade fever Lymphadenopathy Alopecia (localised hair loss) Oral lesions
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What is the management for syphilis
. As with all sexually transmitted infections, patients need: Full screening for other STIs Advice about avoiding sexual activity until treated Contact tracing Prevention of future infections A single deep **intramuscular dose of benzathine benzylpenicillin (penicillin)** is the standard treatment for syphilis. **(in pregnancy, women who are allergic to penicillin should undergo penicillin desensitization and then be treated with penicillin)**
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What can syphillis do to newborn?
- Stillbirth * Maculopapular rash * Hepatosplenomegaly * Cardiovascular anomalies * Sensorineural deafness
135
Define Puerperal
during or relating to the period of about six weeks after childbirth (known as the puerperium) during which the mother's reproductive organs return to their original non-pregnant condition.
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Name some common complications of puerperium
Endometritis C - Section infection Mastitis Breast engorgement Necrotising fasicitis Psychiatric issues
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Outline what Endometiris is and some risk factors for it.
infection of the endometrium that often invades the underlying myometrium. Risk factors Miscarriage (when fetal tissue is left behind) C - Section Prolonged rupture of membranes, multiple vaginal examinations,
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What is the common presentionation of endometritis? When does it most commonly occur?
Endometritis is a clinical diagnosis with fever, uterine tenderness, a foul purulent vaginal discharge, and/or increased vaginal bleeding. It occurs most commonly 5–10 days after delivery.
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What is the treatment for post partum endometritis?
The first line is IV Clindamycin and Gentamicin Clindamycin is a lincosamide , gentamicin an Aminoglycoside .
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What is Mastitis, and what is the most common cause of it?
This is a condition that refers to inflammation of the breast – It is associated with breastfeeding: milk stasis can cause an inflammatory response -> may then get secondary infection, most commonly with staphylococcus aureus
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What are some signs and symptoms of mastitis, and what is the management of it?
Erythematous, tender, swollen area of breast – Systemic upset with fevers, chills and fatigue – 1st line is to advise continue breastfeeding, ensuring the breast is fully emptied – If symptoms do not improve after 24 hours of milk removal –> Flucloxacillin 10-14 days
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What is breast engorgement? When and why can it happen?
Caused by vascular and lymphatic stasis May occur on days 2–4 postpartum in women who are not nursing or at any time if breastfeeding is interrupted. Management conservatively with ice packs and painkillers
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What causes Trichomnoiasis? what type of pathogen is it?
Trichomonas vaginalis - its type of parasite classed as a protozoan, and is a single-celled organism with flagella Trichomonas is spread through sexual activity and lives in the urethra of men and women and the vagina of women.
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What can be some consequences for women with Trichomoniasis
Trichomonas can increase the risk of: Contracting HIV by damaging the vaginal mucosa Bacterial vaginosis Cervical cancer Pelvic inflammatory disease Pregnancy-related complications such as preterm delivery. Premature rupture of fetal membranes Can lead to prem baby and low birthweight
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What is the presentation of Trichomoniasis? What is the management for it?
The typical description of the vaginal discharge is frothy and yellow-green, although this can vary significantly. It may have a fishy smell. Itching Dysuria (painful urination) Dyspareunia (painful sex) Balanitis (inflammation to the glans penis) Examination of the cervix can reveal a characteristic “strawberry cervix” (also called colpitis macularis
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What are the investigations for trichomoniasis? What is the management?
Testing the vaginal pH will reveal a raised ph (above 4.5), similar to bacterial vaginosis. The diagnosis can be confirmed with a standard charcoal swab with microscopy (examination under a microscope). Swabs should be taken from the posterior fornix of the vagina (behind the cervix) in women. A self-taken low vaginal swab may be used as an alternative. A urethral swab or first-catch urine is used in men. Treatment is with metronidazole.
147
What can UTIs in pregnant women increase the risk of?
pre-term premature rupture of membrane, maternal chorioamnionitis, intrauterine growth retardation low birth weight baby pre-eclampsia.
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What is the only group of women that testing for bacteria in asymptomatci patients is reccommened for? Why is this
Testing for bacteria in the urine of asymptomatic patients is not recommended as it may lead to unnecessary antibiotics. Pregnant women are an exception to this rule, due to the adverse outcomes associated with infection. Pregnant women with asymptomatic bacteriuria are at higher risk of developing lower urinary tract infections and pyelonephritis, and subsequently at risk of preterm birth. Pregnant women are tested for asymptomatic bacteriuria at booking and routinely throughout pregnancy. This involves sending a urine sample to the lab for microscopy, culture and sensitivities (MC&S).
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What antibiotic would you tend to give pregnant women with a UTI ? When would you avoid the first line treatment
Urinary tract infection in pregnancy requires 7 days of antibiotics. The antibiotic options are: Nitrofurantoin (avoid in the third trimester) Amoxicillin (only after sensitivities are known) Cefalexin
150
What test will determine whether a pregnant mother is safe against VZV?
Mothers that have previously had chickenpox are immune and safe. When in doubt, IgG levels for VZV can be tested. A positive IgG for VZV indicates immunity. Chickenpox exposure in pregnancy - first step is to check antibodies
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What can you give to pregnant women exposed to VZV in pregnancy? Timings? What about if the women has chickenpox?
historically, exposure has been managed through the timely administration of varicella zoster immunoglobulin (VZIG). However, the guidance has changed due to a national/international VZIG shortage. **oral aciclovir** (or valaciclovir) is now the first choice of PEP for pregnant women at any stage of pregnancy antivirals should be given at day 7 to day 14 after exposure, not immediately When the chickenpox rash starts in pregnancy, they may be treated with oral aciclovir if they present within 24 hours and are more than 20 weeks gestation. **consensus guidelines (Health Protection Authority and RCOG) suggest oral aciclovir should be given if the pregnant women is ≥ 20 weeks and she presents within 24 hours of onset of the rash if the woman is < 20 weeks the aciclovir should be 'considered with caution'**
152
Name some pathogens that can be transferred from mother to fetus
**T**oxoplasma Gondii **O**ther -Parvovirus B19, VZV, Zika, Syphilis **R**ubella **C**ytomegalovirus, Chlamydia, Coxsackie Virus **H**erpes Simplex 2, HIV, Hepatitis B
153
What is Oligohydramnios?
This is the term used to describe an abnormally low level of amniotic fluid during pregnancy – It is characterised by having less than <500ml at 32-36 weeks and amniotic fluid index (AFI) <5th percentile Prevalence: Rare in early pregnancy, common in postterm pregnancies (12% to 25% at 41 weeks).
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What are some Causes of oligohydramnios?
Causes: – Low production of foetal urine –> Renal agenesis (Potter’s syndrome), dysplastic kidney, obstructive uropathy – Poor Placental diffusion –> Pre-eclampsia – Leakage of amniotic fluid –> Premature rupture of membranes - **Causes 50% or oligohydramnios** Other causes include congenital infection, fetal cardiac defects, neural tube defects, twin–twin transfusion syndrome, and non-steroidal antiinflammatory drugs
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What are some complications that Oligohydrosis can lead to?
– Abnormal lie and development – ***Poor respiratory development*** –> amniotic fluid is needed for maturation of the alveoli, so infants are born with severe respiratory distress – Foetal muscle contractures (as amniotic fluid allows the fetus to move its limbs in utero) Amniotic band syndrome (adhesions between the amnion and fetus causing serious deformities, including limb amputation) or musculoskeletal deformities due to uterine compression (such as clubfoot) may develop in some cases.
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What is the investigation of choice and treatment for oligohydramnios?
Diagnosis: – Ultrasound is investigation of choice (shows level <5th centile) Management: – Increase maternal hydration - amniofusion (the introduction of normal saline via an intrauterine catheter placed through the partially dilated cervix during labour to stop cord compression)
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What is Polyhydramnios?
This is the term used to describe an abnormally high level of amniotic fluid during pregnancy – It is used when the amniotic fluid index is above the 95th centile for gestational age – It causes over-distension of the uterus which can lead to preterm labour and other complications
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What are some cause of Polyhydramnios?
– It is idiopathic in the majority of cases Maternal Diabetes, as amniotic fluid is dependent on degree of glycemic control, and **macrosomia** (big babies produce more urine) – Twin-to-twin transfusion syndrome –> leads to oligohydramnios for one and polyhydramnios for the other – Decreased swallowing of fluid –> foetal oesophageal/duodenal atresia or CNS abnormalities _ hydrops fetalis (foetal heart failure)
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What are some signs of Polyhydramnios, and how would you investigate it?
Signs and Symptoms * Uterine size larger than normal for stage of pregnancy * Dyspnea (especially when lying on back (supine)) * Premature labor * Difficulty palpating fetal parts or hearing fetal heart tones refractory edema of the lower extremities and vulva. * Diagnosis. Polyhydramnios should be suspected if the fundal height is significantly more than expected for gestational age. Diagnose wit It is defined via US as a total amniotic fluid volume >2L
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What is the treatment for Polyhydramnios?
Antacids to relieve heartburn and nausea for the mother Nonsteroidal anti-inflammatory drugs **(indomethacin)** can decrease fetal urine production, but may cause premature closure of the fetal ductus arteriosus. Removal of fluid by amniocentesis is only transiently effective.
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Regarding Malpresentations of a foetus, what are the three definitions that you need to know?
Lie - the relationship between the long axis of the fetus and the mother. Presentation - the fetal part that first enters the maternal pelvis. Position – the position of the fetal head as it exits the birth canal.
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What are some risk factors for an abnormal fetal lie/malpresentation/malpostion
Prematurity Multiple pregnancy Uterine abnormalities (e.g fibroids, partial septate uterus) Fetal abnormalities Placenta praevia - the placenta partially or wholly blocks the neck of the uterus Primiparity (first child)
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What are the different types of malpresentation you may see
Cephalic vertex presentation is the most common and is considered the safest Other presentations include breech, shoulder, face and brow
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What are the different types of abnormal lie you may see?
Longitudinal, transverse or oblique
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How would you manage abnormal lie?
**external cephalic version** (ECV) is the manipulation of the fetus to a cephalic presentation through the maternal abdomen. C section delivery if unsuccessful It has an approximate success rate of 50% in primiparous women and 60% in multiparous women.
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How do you manage the different types of malposition?
Breech – attempt ECV before labour, vaginal breech delivery or C-section Brow – a C-section is necessary Face - chin is anterior (mento-anterior) a try normal labour then C section chin is posterior (mento-posterior) then a C-section is necessary Shoulder – a C-section is necessary
167
What are the 3 main types of breach postion? What is the most dangerous?
– Complete –> this is where the complete caudal end of the fetus is in the lower segment - Frank –> this is the most common where buttocks occupy the lower segment – Footling –> this is the most dangerous form where the foot is in the pelvis
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What are some risk factors for a breach delivery?
– Mother –> Malformations of the uterus, large fibroids, previous uterine surgery – Pregnancy –> Placenta Praevia, poly/oligohydramnios, prematurity
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What is the management for a breach presentation
If <36 weeks: – No action is required yet as many foetuses will turn spontaneously to cephalic presentation If >36 weeks: – 1st line is external cephalic version (ECV) to turn baby into cephalic presentation – It is offered at **36 weeks for 1st time mothers and 37 weeks for multiparous women** – However, this cannot be **offered if there are multiple pregnancies or ruptured membranes** If unsuccessful: – Offer elective Caesarean section or vaginal breech delivery if breech postion was discovered when shes in the second stage of labour (fully dilated)
170
What is the most common cause of failure to progress in a) Primigravida b) Multigravida
a) insufficient uterine contractions (so can just give syntocinon) b) Cephalopelvic disproportion (so givng syntoncinon isnt gonna help, need C section)
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why do we not give syntoncinon in multigravida failure to progress
- because after birth - uteris becomes fibrous tissue - more prone to rupture in future prengancies
172
What is Cephalopelvic disproportion?
When the size of pelvis cant allow the foetus to pass through the birth canal. This may be due to a small pelvis, a nongynecoid pelvic formation, a large fetus, an unfavorable orientation of the fetus, or a combination of these factors
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How do you treat cephalopelvic disproportion?
In the case of a fetus being too large, some obstetricians recommend induction of labour for earlier delivery. Diagnosis of CPD in active labour will usually result in a Caesarian section
174
What is a Uterine ruputre? What are the two types
Uterine rupture refers to a full-thickness disruption of the uterine muscle and overlying serosa. It typically occurs during labour, and can extend to affect the bladder or broad ligament. There are two main types: Incomplete – uterine serosa (perimetrium) surrounding the uterus remains intact.. In this case, the uterine contents remain within the uterus. Complete – complete rupture, the serosa ruptures along with the myometrium, and the contents of the uterus are released into the peritoneal cavity.
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What are some risk factors of a uterine ruputre?
Vaginal birth after caesarean (VBAC) Previous uterine surgery Increased BMI High parity Increased age Induction of labour Use of oxytocin to stimulate contractions
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What is the presentation of a uterine rupture?
Abdominal pain Vaginal bleeding Ceasing of uterine contractions Hypotension Tachycardia Collapse
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What is the management of a uterine rupture?
Uterine rupture is an obstetric emergency. Resuscitation and transfusion may be required. Emergency caesarean section is necessary to remove the baby, stop any bleeding and repair or remove the uterus (hysterectomy).
178
How many stages of labour are there? What 2 things can trigger the onset of labour?
There are 3 stages. in the third trimester, before Labor starts , a woman might have a **plug of mucus and blood fall out of the opening to the cervix** sometimes called the bloody shell other times the **amniotic sac might rupture** sometimes called water breaking either of these can trigger the onset of Labor - this releases loads of prostaglandins which stimulate labour
179
what are braxton hicks contractions, and how are they different to true contractions?
Braxton Hicks contractions are irregular, mild uterine contractions that can occur during pregnancy, often called "practice contractions." They are typically painless, do not increase in intensity or frequency, and do not lead to labor. They can go away with changing postion/movements, true contractions wont
180
Outline what happens in the first stage of labour.
The first stage of labour is from the onset of labour (true contractions) until the cervix is fully dilated to 10cm. It involves cervical dilation (opening up) and effacement (getting thinner from front to back). Latent phase: From 0 to 3cm dilation of the cervix. This progresses at around 0.5cm per hour. There are irregular contractions. (can take 24 hours in primgravida) Active phase: From 3cm to 7cm dilation of the cervix. This progresses at around 1cm per hour, and there are regular contractions. (can take 4-6 hours in primigravida) (examination every 4 hours) Transition phase: From 7cm to 10cm dilation of the cervix. This progresses at around 1cm per hour, and there are strong and regular contractions.
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What does the second stage of labour consist of, and what does this stage depend on?
The second stage of labour lasts from 10cm dilatation of the cervix to delivery of the baby The success of the second stage depends on “the three Ps”: power, passenger and passage.
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What descriptive qualities are outline in "passenger" in the second stage of labour?
Size: particularly the size of the head as this is the largest part. Attitude: the posture of the fetus. For example, how the back is rounded and how the head and limbs are flexed. Lie: the position of the fetus in relation to the mother’s body: Presentation: the part of the fetus closest to the cervix:
183
What happens in the third stage of labour?
The third stage of labour is from the completed birth of the baby to the delivery of the placenta. Can be done naturally/physiologically or Active management from Dr or Midwife ==>involves giving a dose of intramuscular oxytocin to help the uterus contract and expel the placenta. Careful traction is applied to the umbilical cord to guide the placenta out of the uterus and vagina.
184
outline what is meant by descent, in the progression of labour
Descent Obstetricians describe the position of the baby’s head in relation to the mother’s ischial spines during the descent phase. Descent is measured in centimetres, from: -5: when the baby is high up at around the pelvic inlet 0: when the head is at the ischial spines (this is when the head is “engaged”) +5: when the fetal head has descended further out
185
What are the measures done for failure to progress
Amniotomy, also known as artificial rupture of membranes (ARM) for women with intact membranes Oxytocin infusion Instrumental delivery Caesarean section key complicaiton of AROM - amniotic fluid embolism
186
What are your aiming for with giving oxytocin for failure to progress?
. It is started at a low rate and titrated up at intervals of at least 30 minutes as required. The aim is for 4 – 5 contractions per 10 minutes. Too few contractions will mean that labour does not progress. Too many contractions can result in fetal compromise, as the fetus does not have the opportunity to recover between contractions.
187
Define premmaturity. Before how many weeks is a baby considered non viable?
Prematurity is defined as birth before 37 weeks gestation Babies are considered non-viable below 23 weeks gestation. Generally, from 23 to 24 weeks, resuscitation is not considered in babies that do not show signs of life. Babies born at 23 weeks have around a 10% chance of survival.
188
What test can indicate whether a pregnant woman is in preterm labour?
**Fetal fibronectin** is the “glue” between the chorion and the uterus, and is found in the vagina during labour. A result of less than 50 ng/ml is considered negative, and indicates that preterm labour is unlikely If the fetal fibronectin test result is positive (concentration more than 50 ng/ml), preterm labour should be diagnosed and treatment offered.
189
Define what preterm premmature rupture of membranes is, and how to manage it
Preterm prelabour rupture of membranes is where the amniotic sac ruptures, releasing amniotic fluid, before the onset of labour and in a preterm pregnancy (under 37 weeks gestation) Prophylactic antibiotics should be given to prevent the development of chorioamnionitis==> **Erythromycin** antibioticsfor 10 days following premature preterm rupture of membranes, or until the woman is in established labour, whichever is sooner. Induction of labour may be offered from 34 weeks to initiate the onset of labour.
190
define what preterm labour with intact membranes is. How can it be diagnosed?
Preterm labour with intact membranes involves regular painful contraction and cervical dilatation, without rupture of the amniotic sac Clinical assessment includes a speculum examination to assess for cervical dilatation. Less than 30 weeks gestation, clinical assessment alone is enough to offer management of preterm labour. More than 30 weeks gestation, a transvaginal ultrasound can be used to assess the cervical length
191
Outline some management for preterm labour
Fetal monitoring (CTG or intermittent auscultation) Tocolysis with nifedipine: nifedipine is a calcium channel blocker that suppresses labour Maternal corticosteroids: can be offered before 35 weeks gestation to reduce neonatal morbidity and mortality IV magnesium sulphate: can be given before 34 weeks gestation and helps protect the baby’s brain Delayed cord clamping or cord milking: can increase the circulating blood volume and haemoglobin in the baby at birth *Administering steroids can cause hyperglycemia in diabetics, and therefore close attention should be paid to the blood glucose measurements. Hyperglycaemia in the mother can cause adverse outcomes for the fetus, which is why extra care must be taken. Hourly blood glucose measurements must be taken, and additional insulin given as required.*
192
How does the Tocolysis drugs work?
Tocolysis involves using medications to stop uterine contractions. Nifedipine, a calcium channel blocker, is the medication of choice for tocolysis. - Inhibits myometrium contractions Atosiban is an oxytocin receptor antagonist that can be used as an alternative when nifedipine is contraindicated. It is only used as a short term measure (i.e. less than 48 hours).
193
What organs are most likely to be affected in babies that are born premature and why?
The lungs and brain are most likely to be affected as these develop in the 3rd trimester.
194
Give some risk factors for having a premature baby.
Intra-amniotic infection 50 Multiple gestation 40 Placental abruption 35 Third trimester vaginal bleeding 10 Second trimester vaginal bleeding 2 Prior preterm delivery 2–5 numbers are relative risk
195
Define what premmature rupture of the membranes is. (PROM)
Premature rupture of the membranes (PROM) refers to rupture of the fetal membranes before the onset of labor.
196
What dies Pre term PROM and Prolonged PROM refer to What are some risk factors for PROM?
Preterm PROM (PPROM) refers to PROM at <37 weeks. Prolonged PROM refers to PROM >24 hours and is associated with an increased risk of intra-amniotic infection Previous PROM, infection, smoking, vaginal bleeding during pregnancy, amniocentesis, polyhydramnios, multiple pregnancy, cervical insufficiency.
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What things are seen in the clinical picture of Premmature rupture of the membranes?
A history of Gush of fluid causing a woman to be constantly wet On speculum exam Pooling of fluid in posterior vaginal fornix. Or Absence of vaginal discharge. 1 A pool of vaginal fluid 2 Fluid turns nitrazine paper blue (pH of amniotic fluid is 7.0–7.7 compared with vaginal pH of 4.5) 3 Microscopic 'ferning' of vaginal fluid (refers to crystallization of amniotic fluid on drying) Note: bimanual examinations should be avoided (because they promote ascending intraamniotic infection)
198
What other investigations woudl you do in a patient who has undergone PROM?
* Urine analysis and culture for UTI/asymptomatic bacteriuroia * Cervical test or culture for C. trachomatis/N. gonorrhoea * Vaginal tests for bacterial vaginosis (BV) and trichomoniasis * Introital/rectal culture for group B streptococcus (GBS) **Basically just loads of tests for microbes!**
199
How do you treat premmature/prelabour ruputre of membranes at >37 weeks, and 34-36 weeks.
For both Both expectant management (watchful waiting) and an induction of labor (artificially stimulating labor) are considered in this case. 90% of women start labor on their own within 24 hours, and therefore it is reasonable to wait for 12–24 hours as long as there is no risk of infection Antibiotics if needed to prevent group B streptococcus (GBS) transmission. - **benzylpenicillin** - if - Known Maternal GBS Colonization or GBS Bacteriuria in the current pregnancy. Previous Baby with Neonatal GBS Disease. If GBS status is unknown and there are additional risk factors (e.g., fever, prolonged rupture of membranes >18 hours, or preterm PROM).
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What antibitocis do you give to prevent GBS transmition, and when?
Benzylpenicillin is the antibiotic of choice for GBS prophylaxis Intravenous and Intrapartum (aka during labour)
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What is hte management for PROM at preterm 24–33 weeks?
Watchful waiting (expectant management) - Tocolytics to prevent the beginning of labor Magnesium sulfate infusion for 24–48 hours to allow maximum efficacy of corticosteroids for fetal lungs and also confer benefit to fetal brain and gut before delivery One time dose of corticosteroids (two separate administrations, 12–24 hours apart) before 34 weeks Antibiotics if needed to prevent GBS transmission Administering steroids can cause hyperglycemia in diabetics, and therefore close attention should be paid to the blood glucose measurements. Hyperglycaemia in the mother can cause adverse outcomes for the fetus, which is why extra care must be taken. Hourly blood glucose measurements must be taken, and additional insulin given as required.
202
What is an umbiliical cord prolapse?
Cord prolapse is when the umbilical cord descends below the presenting part of the fetus and through the cervix into the vagina, **Happens after rupture of the fetal membranes** Causes foetal hypoxia in 2 ways = can get compressed, or when exposed to the outside temperature, can lead to vasospasm and subsequent hypoxia
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What are some risk factors for cord prolapse?
Malpresentation (breech, transverse lie), polyhydramnios, small fetus, prematurity. **50% of patients with an umbilical cord prolapse will have undergone artificial rupture of membranes.**
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What things suggested a diagnosis of cord prolapse
Umbilical cord prolapse should be suspected where there are signs of fetal distress on the CTG. A prolapsed umbilical cord can be diagnosed by vaginal examination. Speculum examination can be used to confirm the diagnosis. 50% of patients with an umbilical cord prolapse will have undergone artificial rupture of membranes.
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What uis the management of a cord prolapse?
Emergency caesarean section is indicated where cord prolapse occurs. A normal vaginal delivery has a high risk of cord compression and significant hypoxia to the baby. Pushing the cord back in is not recommended. The cord should be kept warm and wet and have minimal handling whilst waiting for delivery (handling causes vasospasm).
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What manouvers can be done to prevent damage caused by a cord prolapse?
When the baby is compressing a prolapsed cord, the presenting part can be pushed upwards to prevent it compressing the cord. The woman can lie in the left lateral position (with a pillow under the hip) or the knee-chest position (on all fours), using gravity to draw the fetus away from the pelvis and reduce compression on the cord. Tocolytic medication (e.g. terbutaline) can be used to minimise contractions whilst waiting for delivery by caesarean section. Can insert fluid into baldder via catheriter if at home
207
What are the two main things used in an instrumental delivery? What is recommended to be given after an instrumental delivery
ventouse suction cup or forceps. Tools are used to help deliver the baby’s head. About 10% of births in the UK are assisted by an instrumental delivery A single dose of co-amoxiclav is recommended after instrumental delivery to reduce the risk of maternal infection.
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What are some indications for an instrumental delivery? What can things can increase the likelihood of it?
The decision to perform an instrumental delivery is based on the clinical judgement of the midwife or obstetrician. Some key indications are: Failure to progress Fetal distress Maternal exhaustion Control of the head in various fetal positions there is an increased risk of requiring an instrumental delivery when an epidural is in place for analgesia.
209
What things need to be satisfied before you can use forceps?
only use forceps at full dilatation (10cm) (or you'll be pulling on the cervix ==> uterine rupture) Only when station is 0 or +1 Has to be occipital anterior position (determine the position by feeling for the suture lines) You must empty the bladder Membranes need to be ruptured Need to give lots of pain relief And make sure there are no signs of Cephalopelvic disproportion
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What things is there an increased risk of with instrumental delivery? (to mother)
Postpartum haemorrhage Episiotomy Perineal tears Injury to the anal sphincter Incontinence of the bladder or bowel Nerve injury (obturator or femoral nerve)
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Nerve damage seen in instrumental labour - damage to a) Femoral nerve b) obturator nerve will cause what symptoms?
Injury to the femoral nerve causes weakness of knee extension, loss of the patella reflex and numbness of the anterior thigh and medial lower leg. The obturator nerve may be compressed by forceps during instrumental delivery or by the fetal head during normal delivery. Injury causes weakness of hip adduction and rotation, and numbness of the medial thigh.
212
What is an episiotomy? Why do doctors do it?
a cut in the area between the vagina and anus (perineum) during childbirth, to **make the opening of the vagina a bit wider**, allowing the baby to come through it more easily. Sometimes a woman's perineum may tear as their baby comes out. In some births, an episiotomy can help to prevent a severe tear or speed up delivery if the baby needs to be born quickly. *Episiotomy is equivalent to a second-degree perineal laceration*
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What is the main complication for the baby following a) Ventouse b) Forceps ***only use forceps whem mum is fully dilated at 10cm, or youll attach and pull the cervix**
Cephalohaematoma with ventouse Facial nerve palsy with forceps The main complication for the baby is cephalohaematoma. This involves a collection of blood between the skull and the periosteum. The main complication for the baby is facial nerve palsy, with facial paralysis on one side. Forceps delivery can leave bruises on the baby’s face. Rarely the baby can develop fat necrosis, leading to hardened lumps of fat on their cheeks ***only use forceps whem mum is fully dilated at 10cm, or youll attach and pull the cervix**
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Describe a first degree vaginal tear.
First degree - tear within vaginal mucosa only.
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Describe a second degree vaginal tear.
Second degree - tear into sub-cutaneous tissue.
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Describe a third degree vaginal tear.
Third degree - laceration extends into external anal sphincter.
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Describe a fourth degree vaginal tear.
Fourth degree - laceration extends through external anal sphincter into rectal mucosa.
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Give 3 risk factor's for vaginal tears. What is the management for perianal tears?
1. Primigravida. 2. Macrosomia and shoulder dystocia. 3. Forceps delivery. 1st degree - repair on own ] 2nd degree - suture on ward by midwife or suitably experieinced clinician 3rd and 4th degree - require repair in theatre by a suitably trained clinician
219
What are the main causes of obstructed labor?
a large or abnormally positioned baby - **eg shoulder dystocia, or macrosomia** small pelvis - **if a girl is a teenager/young, malnutrition or lack of vit D exposure** problems with the birth canal - **FGM, tumors**
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What is shoulder dystocia?
When **anterior shoulder** of the baby becomes stuck **behind the pubic symphysis** of the pelvis, after the head has been delivered It requires specific maneuvers to facilitate delivery. With babies head out, uterus will still be contracting, but baby will want to breathe - but it can't, because chest is compressed
221
Give 3 risk factors for shoulder dystocia.
1. Macrosomia. **(secondary to gestational diabetes, is most common cause)** 2. Maternal diabetes. 3. Post-maturity. 4. Obesity. 5. Prolonged labour. 6. Use of forceps/venoutse 7. IOL 8. Prolonged 1st/2nd stage of labour
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How should shoulder dystocia be managed?
HELPERR: ``` H - call for Help. E - evaluate for Episiotomy. **(often large one)** L - Legs in McRoberts. P - suprapubic Pressure. E - Enter pelvis. - Rubin’s maneuver or Wood’s Maneuver R - Rotational manoeuvres. R - Remove and deliver posterior arm. ```
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Outline what happens in mcRoberts Manoeuvre, and what happens in Woodscrew Manoeuvre.
McRoberts manoeuvre involves hyperflexion of the mother at the hip (bringing her knees to her abdomen). This provides a posterior pelvic tilt, lifting the pubic symphysis up and out of the way. Rubins manouvre = (press on the posterior shoulder to allow the anterior shoulder extra room) Woodscrew - putting a hand in the vagina and rotating the foetus 180 degrees in attempt to 'dislodge' the anterior shoulder from the symphysis pubis. The top shoulder is pushed forwards, and the bottom shoulder is pushed backwards, rotating the baby and helping delivery
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Shoulder dystocia: give 3 potential complications that the mother is at risk of.
1. Vaginal tear. 2. PPH. 3. PTSD. 4. Bladder/uterine rupture.
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Shoulder dystocia: give 3 potential complications that the baby is at risk of.
1. Cerebral palsy. 2. Hypoxia. 3. Brachial plexus injury. 4. Fractured humerus/clavicle. Fits
226
Normal physiology - what are the 3 layers of the uterine wall? Where does the placenta normally attatch?
Endometrium, the inner layer that contains connective tissue (stroma), epithelial cells and blood vessels Myometrium, the middle layer that contains smooth muscle Perimetrium, the outer layer, which is a serous membrane similar to the peritoneum (also known as serosa) Usually the placenta attaches to the endometrium. This allows the placenta to separate cleanly during the third stage of labour, after delivery of the baby.
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What happens in placenta accreta?
With placenta accreta, the placenta embeds past the endometrium, into the myometrium and beyond There are three further definitions, depending on the depth of the insertion
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What are some risk factors for placenta accreta?
Risk Factors Previous placenta accreta Previous endometrial curettage procedures (e.g. for miscarriage or abortion) Previous caesarean section Multigravida Increased maternal age Low-lying placenta or placenta praevia
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Outline the 3 definitions along the specturem of placenta accreata
Superficial placenta accreta is where the placenta implants in the surface of the myometrium, but not beyond Placenta increta is where the placenta attaches deeply into the myometrium Placenta percreta is where the placenta invades past the myometrium and perimetrium, potentially reaching other organs such as the bladder A - I - P = alphabetical in terms of depth
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What is the management of placenta accreata?
Ideally, placenta accreta is diagnosed antenatally by ultrasound Patients may require additional management at birth due to the risk of bleeding and difficulty separating the placenta. This may include: Complex uterine surgery Blood transfusions Intensive care for the mother Neonatal intensive care The options during caesarean are: Hysterectomy with the placenta remaining in the uterus (recommended) Expectant management, leaving the placenta in place to be reabsorbed over time *If placenta accreta is discovered after delivery of the baby, a hysterectomy is recommended.*
231
Give some reasons why doctors may want to bring about an induced labour
Prolonged Gestation Women with uncomplicated pregnancies should be offered IOL between 40+0 to 40+14 weeks’ gestation Premature Rupture of Membranes Maternal Health Problems *eg hypertension, pre-eclampsia, diabetes and obstetric cholestasis.* Fetal Growth Restriction *the second most common indication for induction of labour* Intrauterine Fetal Death
232
Give some contraindications for Induction of labour (they are generally rhe same as for normal vaginal delivery)
Cephalopelvic disproportion Major placenta praevia Vasa praevia Cord prolapse Breech presentation Triplet or higher order pregnancy Transverse lie Previous classical Caesarean section - Increased risk of emergency C section and uterine rupture
233
What are the three main methods of induction of labour
**Vaginal Prostaglandins**- act to prepare the cervix for labour by ripening it, and also have a role in the contraction of the smooth muscle of the uterus - **mainstay** **Amniotomy** where the membranes are ruptured artificially using an instrument called an amnihook. Give artificial oxytocin (Syntocinon) alongside will be to increase the strength and frequency of contractions. **Membrane sweep** - It is classified as an adjunct of IOL. Performing it increases the likelihood of spontaneous delivery. Done by inserting a gloved finger through cervix and rotating it against the fetal membranes, aiming to separate the chorionic membrane from the decidua. With amniotomy and membrane sweep, this process releases prostaglandins in an attempt to expedite labour
234
What is a Bishop score? What does it entail, and when is it done
It's an assessment of ‘cervical ripeness‘ based on measurements taken during vaginal examination. Score of ≥ 8 – suggests the cervix is ripe or ‘favourable’ – this means that there is a high chance of a response to interventions made to induce labour (i.e. induction of labour is possible). Bishop score is **> 6 = amniotomy and an intravenous oxytocin infusion** is the preferred method of induction of labour if the Bishop score is **≤ 6 = Vaginal PGE2 or oral misoprostol** is the preferred method of induction of labour. It is checked prior to induction, and during induction to assess progress **(6 hours post-table/gel, 24 hours post-pessary):**
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What are some things seen on the Bishop score? and what happens if score is still low 6 hours post-table/gel, or 24 hours post-pessary?
Dilation of cervix Length of Cervix Station (Position of top of head in relation to ischial spines) Consistency of cervix Position of cervix Failure of a cervix to ripen despite use of prostaglandins may result in the need for a caesarean section.
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What are some absolute indications for a C section?
Maternal * Failed induction of labor * Failure to progress (labor dystocia) * Cephalopelvic disproportion Uteroplacental * Previous uterine surgery (classical cesarean) * Prior uterine rupture * Outlet obstruction (fibroids) * Placenta previa, large placental abruption Fetal * “Fetal distress”/non-reassuring fetal testing * Cord prolapse * Fetal malpresentation (transverse lie)
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What is placenta praevia
Placenta praevia is where the placenta is attached in the lower portion of the uterus, lower than the presenting part of the fetus. Low-lying placenta is used when the placenta is within 20mm of the internal cervical os Placenta praevia is used only when the placenta is over the internal cervical os *Praevia directly translates from Latin as “going before”*
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What are some risk factors for placenta praevia?
Previous caesarean sections Previous placenta praevia Older maternal age Maternal smoking Structural uterine abnormalities (e.g. fibroids) **Assisted reproduction (e.g. IVF)** *indeed, In a large Norwegian study in 2006 it was found that there was a six-fold higher risk of placenta praevia in singleton pregnancies conceived by assisted fertilisation compared with naturally conceived pregnancies.*
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How is placenta praevia diagnosed, and what is its presentation?
The 20-week anomaly scan is used to assess the position of the placenta and diagnose placenta praevia.**if low lying, resacn at 32 weeks to assess ** Many women with placenta praevia are asymptomatic. It may present with painless vaginal bleeding in pregnancy - **usually bright red** (antepartum haemorrhage). Bleeding usually occurs later in pregnancy (around or after 36 weeks). *placental abruption presents with pain, and dark red blood* can do a speculum, don't do a digital exam
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What is the management for placenta praevia?
repeat **transvaginal ultrasound scan at 32 and 36 weeks** Corticosteroids are given between 34 and 35 + 6 weeks gestation to mature the fetal lungs Planned cesarean section is required with placenta praevia and low-lying placenta (<20mm from the internal os). As main complicaton is bleeding, may need Emergency caesarean section Blood transfusions Intrauterine balloon tamponade Uterine artery occlusion Emergency hysterectomy If mother is Rh negative and foeus is Rh postive, then give Anti D - to prevent mother sensitisation If a woman with known **placenta praevia goes into labour (with or without bleeding), an emergency caesarean** section should be performed
241
What is placental abruption ?
when the placenta separates from the wall of the uterus during pregnancy. The site of attachment can bleed extensively after the placenta separates.
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Give some risk factors for placental abruption.
A for Abruption previously; B for Blood pressure (i.e. hypertension or pre-eclampsia); R for Ruptured membranes, either premature or prolonged; U for Uterine injury (i.e. trauma to the abdomen); P for Polyhydramnios; T for Twins or multiple gestation; I for Infection in the uterus, especially chorioamnionitis; O for Older age (i.e. aged over 35 years old); N for Narcotic use (i.e. cocaine and amphetamines, as well as smoking)
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What is the typical presentation of a placental abruption? What may be felt on examination
Sudden onset severe abdominal pain that is continuous **in third trimester** O/E - extreme pain and cold to touch Vaginal bleeding (antepartum haemorrhage) Shock (hypotension and tachycardia) Abnormalities on the CTG indicating fetal distress Characteristic “woody” abdomen on palpation, suggesting a large haemorrhage
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What are the types of placental abruption?
Concealed abruption is where the cervical os remains closed, and any bleeding that occurs remains within the uterine cavity. The severity of bleeding can be significantly underestimated with concealed haemorrhage. Concealed abruption is opposed to revealed abruption, where the Fblood loss is observed via the vagina.
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how can you go diagnosing placental abruption Whats the presentation and lie in it?
There are no reliable tests for diagnosing placental abruption. It is a clinical diagnosis!! - Ultrasound can be useful in excluding placenta praevia, nut not that helpful (only 2% seen on USS) Avoid doing Digital vaginal exam, as can worise bleeidng look for risk factors and hvae high index of suspicion Tends to be normal - Normal (longitudinal lie and cephalic presentation).
246
What is the management of placenta abruption?
2 x grey cannula Bloods include FBC, UE, LFT and coagulation studies Crossmatch 4-6 units of blood Fluid and blood resuscitation as required CTG monitoring of the fetus Close monitoring of the mother Fetus alive and < 36 weeks fetal distress: immediate caesarean no fetal distress: observe closely, steroids, no tocolysis, threshold to deliver depends on gestation Fetus alive and > 36 weeks fetal distress: immediate caesarean no fetal distress: deliver vaginally There is an increased risk of stillbirth so it's recommended to deliver at 37-38 weeks. Active management of the third stage is recommended. where the foetus is viable, under 36 weeks of gestation, and not exhibiting distress, it is recommended that corticosteroids be administered to enhance foetal lung maturation. As per the **RCOG guidelines**: In women presenting with APH before 37+0 weeks of gestation, where there is no **maternal or foetal compromise and bleeding has settled**, there is ***no evidence*** to support elective premature delivery of the foetus.
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What is Vasa Praevia? What can it lead to
Vasa praevia is a condition in which the fetal vessels are exposed, **outside the protection of the umbilical cord or the placenta**. The fetal vessels travel **through the chorioamniotic membranes,** and pass across the internal cervical os (the inner opening of the cervix). These exposed vessels are prone to bleeding, **particularly when the membranes are ruptured during labour and at birth.** This can lead to dramatic fetal blood loss and death. No major maternal risk , but **major fetal risk**
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What are some causes/risk factors of vasa praevia?
Velamentous umbilical cord is where the umbilical cord inserts into the chorioamniotic membranes, and the fetal vessels travel unprotected through the membranes before joining the placenta. An accessory lobe of the placenta (also known as a succenturiate lobe) is connected by fetal vessels that travel through the chorioamniotic membranes between the placental lobes. Risk factors Low lying placenta IVF pregnancy Multiple pregnancy
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How may vasa praevia presnent?
Ideally picked up on ultrasound during pregancy - when membranes rupture - Present as an antepartum haemorrhage, Painless!! It may be detected by vaginal examination during labour, when pulsating fetal vessels are seen in the membranes through the dilated cervix. Finally, it may be detected during labour when fetal distress and dark-red bleeding occur following rupture of the membranes
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What is the management for vasa praevia
For asymptomatic women with vasa praevia, the RCOG guidelines (2018) recommend: Corticosteroids, given from 32 weeks gestation to mature the fetal lungs Elective caesarean section, planned for 34 – 36 weeks gestation Where antepartum haemorrhage occurs, emergency caesarean section is required to deliver the fetus before death occurs.
251
Define antepartum haemorrhage.
Bleeding from anywhere in the genital tract after 24w gestation.
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Give 3 causes of serious antepartum haemorrhage.
placenta praevia, placental abruption and vasa praevia. These are serious causes with high morbidity and mortality. Can also be unexplained
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Give 3 causes of minor antepartum haemhorrage
cervical ectropion, infection and vaginal abrasions from intercourse or procedures.
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Outline the 4 classifiaction grades of antepartum haemhorrage
Spotting = Stains, streaking, or spotting of blood Minor Haemorrhage = Less than 50mL Major Haemorrhage = 50-1000mL without signs of circulatory shock Massive Haemorrhage = Greater than 1000mL with or without signs of circulatory shock
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What are some complications of APH
Premature labour/delivery Blood transfusion *(formation of antibodies)* Acute tubular necrosis (+/- renal failure) DIC PPH! ITU admission ARDS (secondary to transfusion) Fetal morbidity (hypoxia) and mortality Foetal growth restriction
256
Outline what happens in hemolytic disease of the newborn (also known as Erythroblastosis fetalis)
Happens when rhesus anitgens on surface of mother and foetus RBC aren't compatabile If mother is rhesus D negative, and fetus is Rhesus D postive, **foetal blood can cross placenta** and enter mothers bloodstream ==> Mother will recognise the rhesus D antigen as foreign and produce antibodies to it ==> **(mother becomes sensitised to rhesus D antigens)** Usually not a problem in inital pregnacy If pregnant again, **mothers anti-D antibodies can cross the placenta**. If that fetus is rhesus positive, these **antibodies attach themselves to the red blood cells of the fetus** and causes the immune system of the fetus to attack its own red blood cells
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What is an important special test for haemolytic disease of the nweborn?
Keilhauer test - blood test used to measure the amount of fetal hemoglobin transferred from a fetus to a mother's bloodstream. to see if mum has been sensitised
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What is the treatment for haemolytic disease of the newborn?
Phototherapy – Expose to ultraviolet light, converts unconjugated bilirubin to a conjugated form that is easier for the infant to clear. Immunoglobulin therapy
259
What is the only antibody that can cross the placenta?
IgG.
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How can foetal RBC lysis be prevented in rhesus negative mothers?
Anti-D prophylaxis can be given. This destroys Rh+ IgG and so no RBC are attacked.
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Rhesus disease: name 3 events during pregnancy when sensitisation may occur.
1. Miscarriage. 2. Abortion. 3. Amniocentesis. 4. Placental abruption. 5. During delivery.
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A rhesus negative mum is having an amniocentesis. What must you give her prior to this procedure?
Anti-D! There is a risk of sensitisation.
263
What proportion of couples will conceive naturally, after a year of trying?
85% will conceive within a year of regular unprotected sex. 1 in 7 couples will struggle to conceive naturally.
264
After how long should you investigate and refer a couple for infertility?
Investigation and referral for infertility should be initiated after the couple has been trying to conceive without success for 12 months. This can be reduced to 6 months if the woman is older than 35, as her ovarian stores are likely to be already reduced and time is more precious.
265
Give scenarios when referrals for infertility should be made earlier than a year.
Female Age > 35 Menstrual disorder Previous abdominal / pelvic surgery Previous PID / STD Abnormal pelvic examination Male Previous genital pathology Previous urogenital surgery Previous STD Systemic Illness Abnormal genital examination
266
What are the causes of infertility, as a percentage?
Sperm problems (30%) Ovulation problems (25%) Tubal problems (20%) Uterine problems (10%) Unexplained (25%) 40% of infertile couples have a mix of male and female causes.
267
What is some general advice you'd give to a couple struggling with fertility?
There is some general lifestyle advice for couples trying to get pregnant: The woman should be taking 400mcg folic acid daily Aim for a healthy BMI Avoid smoking and drinking excessive alcohol Reduce stress as this may negatively affect libido and the relationship Ensure smears are up to date Aim for intercourse every 2 – 3 days Avoid timing intercourse
268
What are some initial investigations for infertility offered in primary care?
Body mass index (BMI) (low could indicate anovulation, high could indicate PCOS) Chlamydia screening Semen analysis Female hormonal testing (see below) Rubella immunity in the mother
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Name 4 reproductive disorders that are associated with obesity.
1. PCOS. 2. Miscarriage. 3. Infertility. 4. Obstetric complications. Lower ART success
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What things do you investigate in a couple struggling to conceive?
Ovulation / ovarian function / ovarian reserve Semen Quality Tubal Patency (+ Uterus)
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What female hormones are tested in primary care, for infertility treatment? When in cycles?
Serum LH and FSH on day 2 to 5 of the cycle Serum progesterone on day 21 of the cycle (or 7 days before the end of the cycle if not a 28-day cycle). Anti-Mullerian hormone Thyroid function tests when symptoms are suggestive Prolactin (hyperprolactinaemia is a cause of anovulation) when symptoms of galactorrhea or amenorrhoea
272
Hormone testing in infertility treatment - what does levels of FSH and LH indicate?
High FSH suggests poor ovarian reserve (the number of follicles that the woman has left in her ovaries). The pituitary gland is producing extra FSH in an attempt to stimulate follicular development. High LH may suggest polycystic ovarian syndrome (PCOS).
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Hormone testing in infertility treatment - what does levels of progesterone and anti mullerian hormone indicate? When in a womens cycle can they be tested?
A rise in progesterone 7 days before end of cycle indicates that ovulation has occurred, and the corpus luteum has formed and started secreting progesterone. Ideally, (length of cycle minus 7 days) peak luteal progesterone levels should be 10ng/ml or higher Anti-Mullerian hormone can be measured at any time during the cycle and is the most accurate marker of ovarian reserve. It is released by the granulosa cells in the follicles and falls as the eggs are depleted. A high level indicates a good ovarian reserve.
274
What a key complication of fertility treatments? What are teh signs of this?
What It Is: OHSS involves an exaggerated response of the ovaries, leading to excessive growth of ovarian follicles and fluid leakage from the blood vessels into the abdominal and other body cavities. It can range from mild to severe. caused by fertilitiy treatment bHCG injections Ascties, D, and V , decreased urine output, enlarged ovaries
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What are some risk factors and what is the treatment of ovarian hyperstimulation syndrome?
Young age Polycystic ovary syndrome (PCOS) High doses of fertility medications (gonadotropins) Elevated estrogen levels during treatment Previous history of OHSS Use of hCG to trigger ovulation Treatment of OHSS: Mild Cases: Rest, hydration, pain relief, and monitoring. Moderate to Severe Cases: Hospitalization Intravenous fluids to restore balance Paracentesis (draining fluid from the abdomen) if needed LMH Avoidance of hCG injections and freezing embryos for later use
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A sperm count less than what will indicate the need for clinical examination and further tests?
<5m/ml. Further testing may include endocrine tests and karyotyping e.g. klinefelters.
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Infertility investigations: how can tubal patency be investigated?
1. HSG (hysterosalpingogram) imaging. 2. HyCoSy (Hysterosalpingo-contrast-sonography). 3. Laparoscopy.
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infertility treatment - outline the management of anovulation
The options when anovulation is the cause of infertility include: Weight loss for overweight patients with PCOS can restore ovulation Clomifene may be used to stimulate ovulation Letrozole may be used instead of clomifene to stimulate ovulation (aromatase inhibitor with anti-oestrogen effects) Gonadotropins may be used to stimulate ovulation in women resistant to clomifene Ovarian drilling may be used in polycystic ovarian syndrome Metformin may be used when there is insulin insensitivity and obesity (usually associated with PCOS)
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treatment of anovulaton - how does Clomifene and Ovarian drilling work?
Clomifene is an anti-oestrogen (a selective oestrogen receptor modulator). It is given on days 2 to 6 of the menstrual cycle. It stops the negative feedback of oestrogen on the hypothalamus, resulting in a greater release of GnRH and subsequently FSH and LH. Ovarian drilling involves laparoscopic surgery. The surgeon punctures multiple holes in the ovaries using diathermy or laser therapy. This can improve the woman’s hormonal profile and result in regular ovulation and fertility.
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Infertility management - outline some ways to manage infertilty due to issues with the sperm.
Mild - Intrauterine Insemination (IUI) - Moderate abnormality - IVF Severe – Intracytoplasmic Sperm Injection (ICSI) For Azoospermia : Surgical Sperm Recovery Donor Insemination
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What are some treatment options for tubal disease in infertility?
The options for women with alterations to the fallopian tubes that prevent the ovum from reaching the sperm and uterus include: Tubal cannulation during a hysterosalpingogram Laparoscopy to remove adhesions or endometriosis In vitro fertilisation (IVF)
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Outline some options for assisted conception
Stimulated Intrauterine Insemination (SIUI) In Vitro Fertilisation (IVF) - Intracytoplasmic Sperm Injection (ICSI) - Surgical Sperm Recovery (PESA/TESE) - Embryo Freezing Donor insemination - Donor Egg - Donor Embryo - Host Surrogacy
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Briefly describe the process of IVF.
Ovarian stimulation -> egg collection -> insemination -> fertilisation check -> embryo culture -> embryo transfer -> luteal support.
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Why is only 1 egg transferred in IVF?
To avoid multiple pregnancy.
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Give 4 risks associated with IVF.
1. Multiple pregnancy. 2. Miscarriage. 3. Ectopic pregnancy. 4. Foetal abnormality.
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Give 4 factors that can affect the likelihood of IVF being successful.
1. Increasing age -> reduced egg quality. 2. Successive cycles/longer duration infertility. 3. Obesity. 4. Environmental factors e.g. smoking, alcohol, caffeine.
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Give 3 examples of uterine abnormalities that can affect fertility.
1. Endometrial polyps. 2. Fibroids e.g. sub-mucous will significantly affect pregnancy rates. 3. Adhesions.
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Give 2 methods used for monitoring the foetal heart rate.
1. Intermittent auscultation using a pinard stethoscope or a hand held doppler. 2. Continuous monitoring: cardiotocography (CTG). Doppler Scanner is first line to establsih a babys heart beat as is v quick and easy to use
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What is a CTG? How should it be operate?
Operation Two transducers are placed on the abdomen to get the CTG readout: One above the fetal heart to monitor the fetal heartbeat One near the fundus of the uterus to monitor the uterine contractions The transducer above the fetal heart monitors the heartbeat using Doppler ultrasound. The transducer above the fundus uses ultrasound to assess the tension in the uterine wall, indicating uterine contraction.
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CTG - what are some key features to look at on a CTG
Contractions – the number of uterine contractions per 10 minutes Baseline rate – the baseline fetal heart rate Variability – how the fetal heart rate varies up and down around the baseline Accelerations – periods where the fetal heart rate spikes Decelerations – periods where the fetal heart rate drops
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What are some indiciations for CTG monitoring
Sepsis Maternal tachycardia (> 120) Significant meconium Pre-eclampsia (particularly blood pressure > 160 / 110) Fresh antepartum haemorrhage Delay in labour Use of oxytocin Disproportionate maternal pain
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What are the 3 ways baseline rate and variabilty can be described
reassuring, non-reassuring and abnormal | >180 bpm.
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CTG: outline reassuring, non-reassuring and abnormal values for baseline rate.
Reassuring 110 – 160 Non-reassuring 100 – 109 or 161 – 180 Abnormal Below 100 or above 180
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CTG: outline reassuring, non-reassuring and abnormal values for variability
Reassuring 5 – 25 Non-reassuring Less than 5 for 30 – 50 minutes or More than 25 for 15 – 25 minutes Abnormal Less than 5 for over 50 minutes or More than 25 for over 25 minutes
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CTG: what is an acceleration?
An increase in the baseline HR by 10-15 bpm.
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CTG: are accelerations reassuring or non-reassuring?
The presence of accelerations is reassuring.
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CTG: are decelerations reassuring or non-reassuring? Why do decelerations happen?
Decelerations are non-reassuring. Foetal hypoxia causes them due to a lack of oxygen to the unborn baby, causes the foetal heart rate to decelerate because the baby's body recognizes the low oxygen levels and tries to compensate by slowing down the heart rate in an attempt to conserve oxygen and maintain vital functions.
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CTG: what are early decelerations?
Early decelerations are seen just before a uterine contraction. They may be due to foetal head compression.
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CTG: what are late decelerations?
Late decelerations are seen just after uterine contraction. They may be due to placental insufficiency and are often more sinister.
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CTG: what are variable decelerations?
When there is a mixture of early and late decelerations.
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CTG: how would you determine if a CTG was overall normal, suspicious, pathological or need for urgent intervention?
- Normal: everything is normal and accelerations are present. Suspicious: a single non-reassuring feature Pathological: two non-reassuring features or a single abnormal feature Need for urgent intervention: acute bradycardia or prolonged deceleration of more than 3 minutes
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What are the parameters used in determining whether a CTG is normal or abnormal? What mneomic is used?
DR – Define Risk (define the risk based on the individual woman and pregnancy before assessing the CTG) C – Contractions BRa – Baseline Rate V – Variability A – Accelerations D – Decelerations O – Overall impression (given an overall impression of the CTG and clinical picture)
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What is obstetric cholestasis? Why is it thought to happen?
. Obstetric cholestasis is characterised by the reduced outflow of bile acids from the liver. *thought to be caused by increased oestrogen and progesterone levels* The condition resolves after delivery of the baby. it's relatively common (1% pregnant women) Happens in the 3rd trimester
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What is the presentation of Obstetric Cholestasis?
Obstetric cholestasis typically present later in pregnancy, particularly in the third trimester. Itching (pruritis) is the main symptom, particularly affecting the palms of the hands and soles of the feet. Fatigue Dark urine Pale, greasy stools Jaundice ***^Post Hepatic symptoms, as blockage of outflow*** Importantly, there is no rash associated with obstetric cholestasis. If a rash is present, an alternative diagnosis should be considered, such as polymorphic eruption of pregnancy or pemphigoid gestationis.
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What are some differentials of obstetric cholestasis? Aka what else can cause puritis and deranged LFTs?
Gallstones Acute fatty liver Autoimmune hepatitis Viral hepatitis Importantly, there is no rash associated with obstetric cholestasis. If a rash is present, an alternative diagnosis should be considered, such as polymorphic eruption of pregnancy or pemphigoid gestationis.
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What are the investigations of Obstetric Cholstasis? What liver enzyme can be normally raised in pregnancy, and why?
Obstetric cholestasis will cause: Abnormal liver function tests (LFTs), mainly ALT, AST and GGT Raised bile acids *It is normal for alkaline phosphatase (ALP) to increase in pregnancy. This is because the placenta produces ALP. A rise in ALP without other abnormal LFT results is usually due to placental production of ALP, rather than liver pathology.*
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What is the management of obstetric cholestasis?
Emollients (i.e. calamine lotion) to soothe the skin Antihistamines (e.g. chlorphenamine) can help sleeping (but does not improve itching) Ursodeoxycholic acid, (Ursodiol) to lower toxic bile acids Vitamin K can be given if doctors are worried about low Vit and PT time, as is a Fat solubale vitiman so needs bile in the gut to be absorbed =Can increase the chance of a stillbirth - So IOL is offered usually 37-38 weeks gestation - Only if LFT's/bile acids are significantly deranged IOL IS NOT RECCOMMNEDED BEFORE 37 WEEKS
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When can should obstetricains think about a planned IOL in patients with obstetric cholestasis?
Intrahepatic cholestasis of pregnancy increases the risk of stillbirth; therefore induction of labour is generally offered at 37-38 weeks gestation According to the Royal College of Obstetricians and Gynaecologists (RCOG), a discussion should take place with women regarding induction of labour after 37+0 weeks of gestation. However, in most cases, IOL is best avoided unless there are significantly deranged LFT's/bile acid levels. Women should be informed that the case for intervention (after 37+0 weeks of gestation) may be stronger in those with more severe biochemical abnormality (transaminases and bile acids). Induction of labour is not advised nor recommended at earlier gestation periods (prior to 37 weeks) hence, 34, 35, and 36 weeks is the incorrect answer.
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What do you do for reduced movements in pregnancy? What are some priciples around feotal movements
after 28 weeks - do CTG, and can think about IOL Before then - Just have a listen for foetal heart sounds Babies sleep for no more than 90 mins should have established patterns of mveoments by 28 weeks Need to compare with whats normal for that individual mum and baby reduced moements -= baby is tired
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outline the 4 different categories of C section
Category 1: An immediate threat to the life of the mother or baby. This includes conditions like suspected uterine rupture, major placental abruption, cord prolapse, fetal hypoxia, or persistent fetal bradycardia. Category 1 C-sections are considered emergencies and should be **performed within 30 minutes.** Category 2: A maternal or fetal compromise that is not immediately life-threatening. Should be **perfomred within 75 minutes** Category 3: An early birth is needed, but there is no immediate risk to the mother or baby. Category 4: A birth that is scheduled to suit the mother or healthcare provide
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Define SFGA - what are some of the main causes?
having an estimated foetal weight (EFW) or birth weight **below the 10th percentile for gestational age**. maternal - smoking, poor nutrition, conditions like hypertension, diabetes, CKD, **torch** infections, very young mother Placental insufficines - Preeclampsia, placenta praevia Foetal factors - Trisomy 21, 18 and 13 - Turners syndrome - Intraauterine infections, like TORCH
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What is the best measurement for gauging small for gestational age?
A) Abdominal circumference less than the 10th centile for gestation Abdominal circumference (AC) is the most sensitive ultrasound parameter for detecting fetal growth restriction or SGA. It reflects fetal size, particularly the liver and abdominal fat stores, which are most affected by reduced nutrient supply or placental insufficiency. A fetal abdominal circumference below the 10th centile is a strong indicator of SGA, and it is commonly used to define and diagnose SGA.
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What are absolute contraindications for a VBAC?
previous uterine rupture or classical caesarean scar
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antenatal care gestation checks When does a booking visit happen? What happens in it?
8 - 12 weeks (ideally < 10 weeks) Booking visit general information e.g. diet, alcohol, smoking, folic acid, vitamin D, antenatal classes BP, urine dipstick, check BMI Booking bloods/urine FBC, blood group, rhesus status, red cell alloantibodies, haemoglobinopathies hepatitis B, syphilis HIV test is offered to all women urine culture to detect asymptomatic bacteriuria
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What check happens 10 -13+6 weeks What check happens 11 -13+6 weeks
10 - 13+6 weeks Early scan to confirm dates, exclude multiple pregnancy 11 - 13+6 weeks Down's syndrome screening including nuchal scan *(confirm dates just before you get down)*
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When does the anomaly scan happen Give some routine care offered at antenatal checks When is doses of anti-D prophylaxis to rhesus negative women given?
18 - 20+6 weeks = Anomaly scan *(leave home and get wierd at 18)* ***can ideally pick up placenta praevia here if present*** BP, urine dipstick, symphysis-fundal height (SFH) First dose of anti-D prophylaxis to rhesus negative women at 28 weeks Second dose of anti-D prophylaxis to rhesus negative women* 34 weeks
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What are some risk factors for IUGR
Any three of: ethnicity (specified), booking BMI, pre-existing medical conditions such as **hypertension,** past obstetric history of hypertension or**pre-eclampsia** social history including **smoking or taking other drugs** Accept “multiple pregnancy, previous IUGR
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What some things needed beofre a diagnosis of hyperemesis gravidarum is given? What are some blood tests you should do, and what will be trasniently raised?
The Royal College of Obstetricians and Gynaecologists (RCOG) recommend that the following triad is present before diagnosis of hyperemesis gravidarum: RCOG 5% pre-pregnancy weight loss dehydration electrolyte imbalance Thyroid function tests are not helpful for diagnosis because they are often transiently abnormal in women with this condition. Sometimes women with hyperemesis can mimic biochemical hyperthyroidism as hCG, at high levels, can stimulate TSH receptors haematocrit in the FBC, raised transaminases and lowered albumin in the LFTs, lowered potassium, sodium and metabolic hyperchloremic alkalosis in the U+Es and ketones in the urine
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What is soome of teh managemetn for hyperemesis gravidum?
simple measures rest and avoid triggers e.g. odours bland, plain food, particularly in the morning ginger P6 (wrist) acupressure first-line medications antihistamines: oral cyclizine or promethazine phenothiazines: oral prochlorperazine or chlorpromazine second-line medications oral ondansetron: ondansetron during the first trimester is associated with a small increased risk of the baby having a cleft lip/palate. if ondansetron is used then these risks should be discussed with the pregnant woman oral metoclopramide or domperidone: metoclopramide may cause extrapyramidal side effects. It should therefore not be used for more than 5 days admission may be needed for IV hydration