Obs/Gynae Flashcards
pre eclampsia definition
new HTN in pregnancy after 20 weeks gestation
pathology pre eclampsia
endothelial cell damage and vasospasm, which can affect the foetus and almost all matenal organs
mild Pre Ec
moderate PreEc
severe Pre Ec
- Mild = proteinuria and mild/moderate HTN
- Moderate = proteinuria and 160/110
- Severe = proteinuria and any HTN before 34 weeks or with maternal compliocations
Early and late Pre Ec
- Early = <34 weeks
- Late = >34 weeks
features Pre Ec
- Headache
- Epi pain
- Visual disturbances
- Oedema
- None until later stages
Maternal compliations Pre Ec
- Eclampsia
- CVAs
- liver/renal failure
- HELLP
- Pulmonary oedema
Foetal complications Pre Ec
- FGR
- Abruption
- Foetal morbidity and mortality
to confirm PreEc
- urine protein measurements
Pre ec prevention
- Aspirin if <16 weeks and increased risk
Threatened miscarriage
Bleeding but foetus still alive, Os closed
Inevitable miscarriage
heavy bleeding, cervical os open
Incomplete miscarriage
some foetal parts passed
Complete miscarriage
all foetal tissue passed
Septic miscarriage
contents of uterus infected
Missed miscarriage
Foetus has not developed or has died but not recognised until bleeding occurs
Endometriosis definition
Presence and growth of tissue similar to endometrium outisde the uterus
RF endometriosis
- Nulliparous
- White
- FHx
- Reproductive age group
- Retrograde menstruation
S+S endometriosis
- Cyclical pelvic pain
- Dysmennorhoea
- Deep dyspareunia
- Subfertility
- Dyschezia
- Tenderness/thickeneing behind uterus or adnexa
Ix endometriosis
- Laparoscopy
- Transvaginal USS
- MRI if deeply infiltrating
Mx endometriosis
- Pain relief
- The pill
- GnRH agonists
- Mirena coil
- Laparoscopic surgery
- Hysterectomy
Aetiology endometrial cancer
- Obesity
- T2DM
- Nulliparity
- Late menopause
- Oestrogen only HRT
- Unopposed oestrogen
S+S endometrial cancer
- Post menopausal bleeding
- Abnormal bleeding
- Abnormal discharge
- Haematuria
- Anaemia
Ix endometrial cancer
- Transvaginal USS
- Endometrial biopsy
- Hysteroscopy
Mx endometrial cancer
- Surgery = hysterectomy +/- pelvic LN
- Radiotherapy = adjuvant
- Progesterone therapy
Cervical cancer aetiology
- High risk HPV 16 18
Cervical cancer treatment for stage 2 +
- Radiotherapy
- Chemo
- Palliative
Vulval cancer sx
- itching and soreness
- Persistent lump
- Bleeding
- Pain on passing urine
Ovarian cancer presentation
- No Sx
- Bloating/IBS
- Abdo pain/discomfort
- Change in bowel habit
- Urinary frequency
- Bowel obstruction
Obstetric cholestasis
- Characterised by otherwise unexplained pruritus and abnormal LFTs +/- raised bile acids
Obstetric cholestasis causes/RF
- later pregancy (28 weeks)
- Increased oest and prog levels
- genetics
- South Asian
- Hep C
- Multiple preg
- OC previously
- Gallstones
Obsetric cholestasis presentation
- Pruritus (palms and soles)
- Fatigue
- Dark urine
- Pale greasy stools
- Jaundice
Complications Obstetric Cholestasis
- Sudden stillbirth
- Meconium passage
- PPH
Obstetric Cholestasis Ix
- LFTs
- Bile acids
- Rise in ALP with no other abnormal LFTs = placental production
- Mx Obstetric Cholestasis
- Ursodeoxycholic acid (UCDA)
- Emollients
- Antihistamines
- Vitamin K 10mg/day from 36 weeks
- LFTs weekly and 10 days after delivery
Gestational diabetes definition
- Carbohydrate intolerance diagnosed in pregnancy which may or may not resolve after pregnancy
Complications GDM
- Large for date foetus
- Macrosomia
- Shoulder dystocia
- Congenital abnormalities
- Polyhydramnios
- Neonatal hypoglycaemia
RF GDM
- Previous GDM
- Previous macrosomic baby
- BMI >30
- Ethnic origin
- FHX diabetes (1st degree)
When to screen for GDM
- OGTT 24-28 weeks gestation
- In morning after fasting = drink 75g glucose
- Normal results are <5.6mmol/l fasting and <7.8mmol/l at 2 hours
GDM Mx
- 4 weekly USS from 28 - 36W
- Fasting glucose <7, trial diet and exercise then met then insulin
- Above 7 metformin
- above 6 plus macrosomia start insulin and metformin
- Delivery 37-39W
• 1st line - Diet management
• 2nd line - If targets not met with 1st line after 1-2 weeks, offer metformin (insulin if contraindicated)
- Insulin if pre-meal glucose >6 OR 1hr post-prandial glucose >7.5
• 3rd line - Targets not met with 1+2 then add insulin
• Fasting glucose 6-6.9 and complications - Immediate insulin +/- metformin and diet
Targets for GDM blood sugars
- Fasting 5.3
- 1h after meal 7.8
- 2h after meal 6.4
Pre existing DM
- Folic acid pre pregnancy
- Sliding scale needed in delivery
- Planned delivery
- Retinopathy screening
Shoulder dystocia
- Anterior shoulder of baby becomes stuck behind the pubic symphysis of the pelvis
Causes of shoulder dystocia
- Macrosomia secondary to GDM
- Previous dystocia
- Obesity
Presentation dystocia
- Failure of restitution
- Turtle neck sign
Mx dystocia
- McRoberts manoeuvre = hyperflexion of hips
- Suprapubic pressuer
- Episiostomy
- Rubins = reach into vagina put presure on anterior shpilder
- wood screw = rotate baby
Dystocia complications
- Foetal hypoxia (cerebal palsy)
- Brachila plexus injury and bells palsy
- Perineal tears
- PPH
HTN meds that should be stopped in pregnancy
- ACEi
- Angiotensin receptor blockers
- Thiazide diuretics
HTN meds safe in pregnancy
- Labetalol
- CCB
- Alpha blockers
What can undertreated or untreated hypothyroidism in pregnancy cause
- Miscarriage
- Anaemia
- Small for gestational age
- Pre-eclampsia
Dose of levothyroxine in pregnancy
- Needs to be increased by 25-50mcg (30-50%)
- Titrated based on TSH level = measured every 6 weeks
- TSH lowers in pregnancy which is why dose increased
Epilepsy in pregnancy
- May worsen seizure control = stress, lack of sleep, hormones, altered medicines
- Ideally should be controlled with single drug before coming pregnant
Safe epilepsy drugs
- Levetiracetam, lamotrigine, carbamazepine
- SV avoid
- Phenytoin avoid (cleft)
What is vasa praevia
- Foetal blood vessels run in the membranes in front of the presenting part
- Vessels are placed over internal cervical os, before the foetus. therefore outside the protection of the cord or placenta
Vasa praevia presentation
- Painless, moderate vaginal bleeding at the rupture of the membranes
- Severe foetal distress
- USS
- Antepartum haemorrhage
- DVE = pulsating foetal vessels seen in membranes through dilated cervix
Vasa Praevia management
- Immediate C section
- Asymptomatic - corticosteroids 32 weeks, elective CS
Type 1 and 2 Vasa Praevia
- Type 1 = foetal vessels are exposed as a velamentous umbilical cord
- Type 2 = foetal vessels are exposed as they travel to an accessory placental lobe
When induction is offered
- Prelabour ROM
- Foetal growth restriction
- Pre eclampsia
- Obstetric cholestasis
- DM
- IUFD
- Bishop score 8 or more
Prostaglandin induction
- PGE2 inserted into vagina
- Stimulated cervix and uterus to cause osnet of labour
Amniotomy +/- oxytocin
- ARM then oxytocin infusion started within 2 hours if labour not ensued
CRB
- Silicone balloon insetred into cervix and gently inflated to dilate
Why incidence of VTE is increased in pregnancy
- Blood clotting factors are increased
- Fibrinolytic activity reduced
- Blood flow altered
- Stagnation of blood and hypercoagulable states
RF VTE in pregnancy
- Smoking
- Parity >3
- Age >35
- BMI >30
- Reduced mobility
- Multiple pregnancy
- Pre ec
- Varicose veins
- FHx
- Immobility
- IVF
Pulmonary embolus
- Chest pain and dyspnoea
- Tachy, raised RR and JVP
- CXR, ABG and CT
- CTPA or VQ
Prophylaxis DVT/PE
- from 28 weeks if 3 RF
- 1st trimester if 4+ RF
- LMWH continued throughout antenatal and for 6 weeks post
- Temporarily stopped in labour
- Mechanical if contraindicated LMWH = pneumatic compression, anti-embolism stockings
DVT
- Unilateral
- Calf swelling
- Dilated superficial veins
- Tender calf
- Oedema
- Colour change
- Ix = doppler USS
Mx VTE
- LMWH started immediately, before confirming diagnosis
- Massive PE and haemodynamic compromise = unfractioned heparin, thrombolysis, surgical embolectomy
Risks of UTI in pregancy
- Preterm delivery
- Low birth weight
- Pre ec
Asymptomatic bacteriuria
- Bacteria in urine with no Sx
- Tested routinely throughout pregnancy
Causes of UTI
- E coli most common
- Klebsiella
Mx UTI
- 7 days abx
- Nitrofurantoin (avoid in 3rd trimester)
- Amoxicillin
- Cefalexin
- Trimethoprim avoid in early pregnancy
Cord prolapse
- After rupture of membranes, UC descends below presenting part
RF cord prolapse
- Preterm labour
- Breech
- Polyydramnios
- Abnormal lie
- Twins
- amniotomy
Mx cord prolapse
- Pushed up by finger
- Tocolytics can be given (terbutaline)
- All fours
- Immediate CS
Uterine rupture
- Muscle layer of uterus (myometrium) ruptures
- Incomplete = perimetrium remains intact
- Complete = perimetrium ruptures and contents of uterus released into peritoneal cavity
RF uterine rupture
- Previous CS = scar is a point of weakness
- Previous surgery
- BMI
- Parity
- Age
- Induction
Rupture presentation
- Acutely unwell mother
- Abnormal CTG
Rupture Mx
- Maternal resuscitation with fluids and blood required
- Emergency CS
- Repair or removal of uterus
Uterine inversion
- Fundus inverts into uterine cavity
- Haemorrhage, pain and shock
- Brief attempt to push fundus up into vagina
- Replacement with hydrostatic pressure run past a clenched fist at the introitus into the vagina
Rubella in pregnancy
- Congenital rubella syndrome caused by maternal infection
- Pregnant women should not be given MMR vaccine as it is live = need before or after
Features of rubella syndrome - Congenital deafness
- Congenital cataracts
- Congenital heart disease
- Learning disability
Chickenpox/VZV
- Foetal varicella syndrome = growth restriction, microcephaly, scars, hypoplasia
- Severe neonatal varicella infection
- Treat with IV varicella immunoglobulins
Triad of features of congenital toxoplasmosis
- Intracranial calcification
- Hydrocephalus
- Chorioretinitis
Complications of parovirus in pregnancy
- Miscarriage
- Severe foetal anaemia
- Hydrops fetalis
- Maternal pre ec like syndrome
HSV in pregnancy
- Neonatal infection rare but high mortality
- Vertical transmission at delivery
- CS recommended
- Exposed neonates given acyclovir
Neonatal effects HIV
- Stillbirth
- Pre ec
- Growth restriction
- Prematurity
- Vertical transmission
Group B strep
- Causes severe illness
- Vertical transmission can be prevented by high dose IV penicillin throughout labour
- RF = previous, positive culture, preterm labour, ROM >18hrs, maternal fever
Grounds for TOP
A = continuing would risk life of woman more
B = necessary to prevent permanent injury to physical or mental health
C = not exceeded its 24th week and continuance would be greater risk
D = not exceeded 24th week and continuance would be greater to children
E = risk that if child would suffer physical or mental abnormalities as to be seriously handicapped
Legal requirements for TOP
- 2 registered medical practitioners
- Registered practitioner in an NHS or approved hospital
Medical TOP
- Mifepristone = anti-progestogen = halts pregnancy and relaxes cervix
- Misoprostol = prostaglandin analogue = binds to prostaglandin receptors and activates them = soften cervix and stimulate contractions
- Used together mif then miso 36-48hrs later
- Rh -ve women should have anti D 10 w or above
Surgical TOP
- Cervix prepared first = misoprostol, mifepristone or osmotic dilators
- Dilation and suction
- Dilation and forcep evacuation
Complications TOP
- Haemorrhage
- Infection
- Uterine perforation
- Cervical trauma
Adenomyosis definition
Presence of endometrial tissue inside the myometrium
- Associated with endometriosis and fibroids
Adenomyosis S+S
Painful heavy periods, regular
Dyspareunia
1/3 asymptomatic
Exam = uterus mildly enlarged and tender, boggy
Adenomyosis Ix
- TVUSS
- MRI
Adenomyosis Mx
No contraception wanted
- TXA when no associated pain
- Mefenamic acid when associated pain
Contraception
- Mirena coil
- COP
- Progesterone’s
Atrophic vaginitis
- Dryness and atrophy of the vaginal mucosa related to lack of oestrogen
- Occurs in women entering menopause = oestrogen falls and mucosa is thinner, less elastic, dry
Atrophic Vag S+S
- Itching and dryness
- Dyspareunia
- Bleeding due to localised inflammation
Exam - Pale mucosa
- Thin skin
- Reduced folds
- Erythema and inflammation
- Dryness
- Sparse pubic hair
Atrophic Vag Mx
- Lubricant
- Topical oestrogen
Causes of infertility
- Ovulation issues
- Male factor problems
- Sperm unable to reach egg = tubal, coital, cervical
- Implantation
General advice for fertility
- 400mcg folic acid a day
- Health = BMI, smoking, alcohol
- Intercourse every 2-3 days
Primary care Ix infertility
- BMI
- Chlamydia screen
- Semen analysis
- Female hormone testing
- Rubella immunity
Female hormone testing infertility
- Serum LH and FSH days 2-5 of cycle
- Serum progesterone on day 21 of cycle
- Anti mullerian hormone
- TFTs
- Prolactin
Female hormone testing infertility results
- High FSH = poor ovarian reserve
- High LH = PCOS
- Rise in progesterone day 21 = ovulation
- AMH = high = good ovarian reserve
Fertility Ix in secondary care
- USS pelvis
- Hysterosalpingogram
- Laparoscopy and dye test
Mx anovulation
- Weight loss
- Clomifene to stimulate ovulation or letrozole
- Gonadotrophins
- Ovarian drilling
IUI
- for unexplained subfertility, cervical, sexual and some male factors
- Sperm injected directly into cavity of uterus
IVF
- Embryos fertilised outside uterus and transferred back
- Normal ovarian reserve needed
Menopause
- Retrospective diagnosis made after a woman has had no periods for 12 months