Normal Obstetrics
Definition
Labour: Regular and increasing contraction with dilatation, effacement of cervix and descent of presenting foetal part
NOTE: Braxton Hicks contractions are irregular and presents any time during pregnancy. No cervical changes.
Trimesters
1st = 0/40 - 12+6/40
2nd = 13/40 - 27+6/40
3rd = 28/40 - delivery
Labour
Labour: Regular and increasing contraction with dilatation, effacement of cervix and descent of presenting foetal part
NOTE: Braxton Hicks contractions are irregular and presents any time during pregnancy. No cervical changes.
Trimesters
1st = 0/40 - 12+6/40
2nd = 13/40 - 27+6/40
3rd = 28/40 - delivery
Labour
NOTE: Cervical dilatation at 1cm/h, multpiparous 1.5cm/h
Delivery
Delivery
Foetal
FHR: 110-160bpm
Severe variable decelerations:
Normal to have decelerations with contractions. If late decel, call for help.
If unsafe decel/ FHR:
Source
Toronto Notes 2010
FHR: 110-160bpm
Severe variable decelerations:
- <60bpm
- drop >60bmpbelow baseline
- >60s
Normal to have decelerations with contractions. If late decel, call for help.
If unsafe decel/ FHR:
- Check CTG electrode placement
- Call for help
- Maternal position left lateral decubitus (ease SVC compression)
- 100% O2
- Stop oxytocin
- Correct hypotension
- Foetal scalp pH/ electrode
- PV exam rule out cord prolapse
- CS if necessary
Source
Toronto Notes 2010