Parturition Flashcards
labour
the physiological process by which fetus, placenta and membranes expelled through the birth canal after viability of the fetus (22 weeks gestation)
SPONTANEOUSOR INDUCED
what is normal labour characterised by
regular and painful uterine contractions with cervical changes (effacement and dilatation) that conclude in progressive labour
Preterm:
24-37 weeks gestation
Term
37- 42 weeks
Post term:
after 42 weeks
LMP
(Last Menstrual Period) : first day of menstrual period
EDD
(Estimated Date of Delivery) : dates or scan (LMP + 9 months + 7
days)
• 280 days (40 weeks)
Cephalic presentation
Positions of the head in occiput presentation (the determining point is the occiput)
3 Ps
- POWER
- PELVIS
- PASSENGER
What aids uterine contractions
- Prostaglandins
- Oxytocin
- Relaxin
- Stretch response
stages of labour
• 3 stages of labour • First stage. Regular uterine contractions to full cervical dilation; – Latent <4cm – Active 4-10cm • 2nd stage. Delivery of baby • 3rd stage. Delivery of placenta