Inclusion criteria:
Women stimulated with Syntocinon® infusion for induction of labour (with or without cervical priming by prostaglandin).
Exclusion criteria:
- <18 years
- Unable to read and understand the Danish language or to give informed consent
- Cervical dilatation > 4 cm
- Non-cephalic presentation
- Multiple gestation
- Pathological fetal heart rate pattern (cardiotocogram, CTG) before Syntocinon® initiation
- Fetal weight estimation > 4500 g (clinical or ultrasonic)
- Gestational age less than 37 completed weeks