Obstetrics and Gynaecology Flashcards
What should you do if you miss one COCP?
Take immediately and continue as normal
UTI in pregnancy
- Treat even is asymptomatic
- Nitrofurantoin (first-line) - avoid at term due to risk of neonatal haemolysis
- Trimethoprim should be avoided in pregnancy, especially in the first trimester
- Penicillins and cephalosporins are suitable for use during pregnancy, but sulfonamides (such as sulfasalazine) and quinolones (such as ciprofloxacin) should be avoided in pregnancy.
HRT. What is the patient at increased risk of due to the addition of progestogen?
Breast Cancer
Diagnosing Adenmyosis
TVUS
Cervical screening. Two consecutive inadequate samples
Refer for colposcopy in 6 weeks
Which vaccines are offered to pregnant women?
influenza and pertussis
Define parturition
Products of conception expelled from the uterine cavity after 24 weeks gestation
First stage of labour
Early Latent Phase
- Regular contractions
- “Show”
- ROM
- Effacement of cervix and dilation up to 4cm
Active Phase
- Dilation to 10 cm
Normal lengths of 2nd stage of labour
Primiparous
- No epidural: 2 hours
- Epidural: 3 hours
Multiparous
- No epidural: 2 hours
- Epidural: 1 hour
Active management of the third stage of labour
Routine use of uterotonic drugs (oxytocin or synometrine) after delivery of anterior shoulder or directly after birth (before cord stops pulsating)
What are the limits of a delayed third stage of labour?
Physiological >60 minutes
Active >30 minutes
Define Engagement (Cardinal Movement)
Passage of widest diameter of the presenting part to a level below the plane of the pelvic inlet (described in fifths)
How often should a vaginal exam be performed in normal labour?
Every 4 hours
Requirements and contraindications for FORCEPS delivery
Fully dilated
Occipitoanterior position (if OP use Kielland forceps to rotate first)
Ruptured membranes
Cephalic presentation
Engaged presenting part (below ischial spines)
Pain relief
Sphincter - catheterise to empty bladder
Contraindications: prematurity, face presentation, haemophilia, osteogenesis imperfecta, maternal HIV or Hep C
Difference between cephalohaematoma and caput succedaneum
Cephalohaematoma - develops hours after birth, limited by suture lines, associated with ventouse delivery, months to resolve
Caput - present at birth, crosses suture lines, associated with pressure against cervix and prolonged labour, days to resolve
What is the Bishop score used for?
Assessment of the cervix to predict likely outcome of an induction of labour
Artificial rupture of membranes
Cervix dilated <2 cm: PGE2 (Pessary) - contraindicated if has previous scar (use balloon cervical ripening instead) - risk of overstimulation (give terbutaline)
Cervix dilated >2cm: Amniotomy and Syntocinon
Risks of epidural
Loss of "Ferguson' reflex" therefore less uterine activity Increased risk of assisted vaginal delivery Abnormal foetal heart rate Hypotension Accidental dural punture Post dural headache Respiratory depression (if high block) Atonic bladder
Interpreting CTG. Steps. Normal ranges
DR - define risk - why is she on CTG? C - contractions - 3-5 in 10 minutes BRA - baseline rate - 110-160 bpm V - variability - 5-25bpm A - accelerations - >2 D - decelerations - none O - overall impression - what should we do?
Action if Foetal scalp pH is 7.2-7.25
Borderline - normal is 7.25-7.35
Repeat CTG in 30 minutes
Action if Foetal scalp pH is <7.2
Immediate C-section
Reversible causes of maternal collapse
Hypovolaemia (most common - due to haemorrhage) Hypoxia Hypo/Hyperkalaemia Hypothermia Thromboembolism Toxicity Tension PTX Tamponade Eclampsia
Examples of X-linked recessive conditions
colour-blindness
haemophilia
Duchenne
G6PD
Foods to avoid in pregnancy
Raw meat - toxoplasmosis Pate - Listeria Shark/Tuna - Mercury Liver - vitamin A is teratogenic Limit caffeine Avoid Alcohol
All should be offered vitamin D