Repro 6 Flashcards
PCOS: outline
- Affects 5-20% of women of reproductive age
- Both Hyperinsulinaemia and high levels of luteinizing hormone are seen
- Overlap with metabolic disorders
- Hyperandrogenism; oligomenorrhoea, hirsutism and acne
- Characterised by Hyperandrogenism, Ovulation disorder and polycystic ovarian morphology
- Complications: infertility, metabolic syndrome, T2D, cardiovascular disease, Hypertension, OSA
Features of PCOS
- Subfertility and infertility
- Menstrual disturbances: oligomenorrhoea and amenorrhoea
- Hirsutism, acne (due to hyperandrogenism)
- Obesity
- Acanthosis nigricans (due to insulin resistance)
PCOS investigations
- Pelvic ultrasound: multiple cysts on the ovaries
- Baseline investigations: FSH, LH, prolactin, TSH, testosterone and sex hormone binding globulin
- Classical feature- raised LH:FSH ratio (>2)
- Raised oestrogen
- Prolactin may be normal or mildly elevated
- Testosterone may be normal or mildly elevated
- SHBG is normal to low
- Check for impaired glucose tolerance
Rotterdam criteria: diagnosis of PCOS
- Can be made if 2 of the following 3 are present:
- Infrequent or no ovulation (usually manifested as infrequent or no menstruation)
- Clinical and/or biochemical signs of hyperandrogenism (such as hirsutism, acne, or elevated levels of total or free testosterone)
- Polycystic ovaries on ultrasound scan (defined as the presence of ≥ 12 follicles (measuring 2-9 mm in diameter) in one or both ovaries and/or increased ovarian volume > 10 cm³)
PCOS: conservative treatment
- Weight reduction if appropriate, exercise, smoking cessation
- COCP; regulate periods and protect against endometrial cancer
- Co-pyrindrol: reduces Hirsutism and promotes regular menstruating
- Metformin: regulate menstruation, reducing hirsutism and acne
PCOS: Hirsutism and acne treatment
- First line: COCP
- If don’t respond to COCP then topical eflornithine may be tried
- Spironolactone, flutasamid and finasteride can be used under specialist supervision
- Acnes: retinoids, topical antibiotics
PCOS: infertility treatment
- Weight reduction if appropriate
- Metformin, clomiphene or a combination can be used to stimulate ovulation particularly if obese
- Fertility treatment using GnRH analogues
- Ovarian drilling: second line, damages the hormone producing cells of the ovary
Postpartum haemorrhage
Some bleeding from the genital tract following the 3rd stage of labour routinely occurs, up to 500mls is normal.
Any blood loss greater than this constitutes a postpartum haemorrhage. PPH can be primary (from the time of birth, up to 24 hours after) or secondary (after 24 hours and up to six weeks following birth).
Blood loss >1000mls is considered a major obstetric haemorrage and therefore the relevant major haemorrhage protocol should be employed. <1000 is minor PPH
The 4 main causes of PPH: the 4 ‘T’s’
- TONE – Uterine Atony (the uterus is unable to contract to arrest bleeding – this is the most common cause)
- TISSUE – Retained products such as placenta or membranes.
- TRAUMA – To external genitalia, vaginal wall, cervix or uterus.
- THROMBIN – Coagulopathies (either pre existing or caused by heavy bleeding).
Risk factors for primary PPH include
- Previous PPH, BMI >35
- Prolonged labour, previous PPH
- Pre-eclampsia, Induction of labour, instrumental labur
- Increased maternal age, multiple pregnancy
- Polyhydramnios
- Emergency Caesarean section
- Placenta praevia, placenta accreta
- Macrosomia
PPH: preventative measures
- Treating anaemiaduring the antenatal period
- Giving birth with anempty bladder(a full bladder reduces uterine contraction)
- Active management of the third stage(withintramuscular oxytocinin the third stage)
- Intravenous tranexamic acidcan be used during caesarean section (in the third stage) in higher-risk patients
PPH management
- ABC approach: two peripheral cannulas, lie the woman flat. Bloods including group and save. Commence warmed crystalloid infusion. Warmed IV fluid and blood resuscitation
- In severe cases activate the major haemorrhage protocol
- If clotting abnormalities fresh frozen plasma
- In secondary PPH; US for retained products and swabs for infection
- Mechanical: palpate the uterine fundus and sub it to stimulate contraction. Catheterisation to prevent bladder distension and monitor urine output
PPH: medical management
- IV oxytocin: slow IV injection followed by an IV infusion
- Ergometrine slow IV or IM (unless there is a history of hypertension)
- Carboprost IM (unless there is a history of asthma)
- Misoprostol sublingual
- Tranexamic acid
PPH: surgical management
- Surgical options are only done when medical options fail
- An intrauterine balloon tamponade is the first-line ‘surgical’ intervention for most women where uterine atony is the only or main cause of haemorrhage
- Other options include: B-Lynch suture, ligation of the uterine arteries or internal iliac arteries
- If severe, uncontrolled haemorrhage then a hysterectomy is sometimes performed as a life-saving procedure
Secondary PPH
Secondary PPH occurs between 24 hours - 6 weeks. It is typically due to retained placental tissue or endometritis
Secondary PPH: Ix and management
- US for retained products
- Endocevical and high vaginal swab
- Surgical evaluation for retained products
- Antibiotics for infection
Prevention of pre-eclampsia
Prevention of hypertension: consider aspirin 150mg at night daily if 1 high or 2 moderate risk factors. Start before 16 weeks and continue through pregnancy
Pre-eclampsia: high risk factors
- Hypertensive disease during a previous pregnancy
- Chronic kidney disease
- Autoimmune disease such as SLE or APLS
- Type 1 or type 2 diabetes
- Chronic hypertension
Pre-eclampsia: moderate risk factors
- First pregnancy
- Age ≥40
- Pregnancy interval of more than 10 years
- Booking BMI ≥35
- Family history of pre-eclampsia
- Multiple pregnancy