Spinal or Epidural Fentanyl or Sufentanil for Labour Pain in Early Phase of the Labour

Spinal or Epidural Fentanyl or Sufentanil for Labour Pain in Early Phase of the Labour

In this study the analgesic effect of two different opioids (fentanyl and sufentanil) will be compared when given either intrathecally or epidurally in primiparous parturients during early phase of the labour.

Inclusion Criteria:

• Primiparous parturients
• In early phase of labour (cervical dilatation at or under 5 cm)
• No prior opioids by any route of administration within past 120 min
• Pain at or over 80 mm on 0-100 mm visual analog scale during contraction

Exclusion Criteria:

• Allergy for any of the medications used
• Contraindications for epidural/spinal analgesia
• BMI at the time of delivery under 20 or over 35 kg/m2