10/11) Labour & Delivery - PTB Flashcards
Prevention of PTB:
(1) History of PTB + short CL
(2) History of PTB + normal CL
(3) History of 2nd trimester miscarriage + short CL
(4) History of 2nd trimester miscarriage + normal CL
(5) No history + short CL
(6) History of PPROM + short CL
(7) History of cervical trauma + short CL
(1) OFFER Suture or progesterone
(2) CONSIDER progesterone
(3) OFFER Suture or progesterone
(4) CONSIDER Progesterone
(5) CONSIDER Progesterone
(6) CONSIDER Suture
(6) CONSIDER Suture
When to consider rescue cerclage?
16-27+6 with dilated cervix, intact membranes and no bleeding/infection/contractions
How to diagnose PTL?
If <30 weeks - Treat as TPTL
If >30 weeks
(1) Cervical length scan - if <15mm treat as PTL
(2) If cervical length scan unavailable then do fFN - if >50 treat as PTL
(3) If neither available - treat as PTL
First line tocolysis
Nifedipine
When to offer tocolysis?
Consider 24-25+6
Offer 26+0-33+6
When to offer steroids?
Discuss 23-23+6
Consider 24-25+6
Offer 26+0-33+6
Consider 34+0-35+6
When to offer MgSO4?
Offer 24+0-29+6
Consider 30+0-33+6
Monitoring during PTB
Offer either CTG/IA
Try to avoid FSE <34 weeks and ideally <37
No FBS <34, discuss it up to 37
When to consider CS for breech PTB?
Consider 26+0 onwards
How long to delay cord clamping for?
Ideally 30s-3 minutes if mother and baby well but otherwise milk cord and clamp immediately.
Indications for trans abdominal cervical cerclage
- Grossly disrupted cervix
- Absent vaginal cervix
- Previous failed elective vaginal cerclage
Successful pregnancy rate for trans abdominal open cervical sutures
85%
Timing of trans abdominal cerclage to improve outcomes
Pre-pregnancy
Fetal loss rate associated with trans abdominal cerclage
6%
Conversion rate to laparotomy for laparoscopic abdominal cerclage
10%
- 1st: Due to bleeding uterine vessels
- 2nd: Due to poor visualisation from obesity
Incidence of preterm birth
10%
What is cerebral palsy the most common cause of?
Severe physical disability in childhood