Epidural Analgesia and Troubles of Fetal Cardiaq Rythm : Effect of the Systemic Transfer of Ropivacaine and Sufentanil

Epidural Analgesia and Troubles of Fetal Cardiaq Rythm : Effect of the Systemic Transfer of Ropivacaine and Sufentanil

The aim of the investigators study is to demonstrate the association between fetal cardiac rhythm abnormalies after epidural analgesia and the maternal systemic transfer of ropivacaine and/or sufentanil.

Inclusion Criteria:

• 18 years old or more

• nulliparous

  _ one fetus

• head first

• spontaneous labor

• epidural analgesia

• no fetal cardiac rhythm abnormalies before the epidural analgesia

• no active management of labor during 30 minutes after the epidural analgesia induction

• at term

• signature of the consent form

Exclusion Criteria:

• pathological pregnancy
• low maternal blood pressure during the 30 minutes after the epidural analgesia
• uterin contraction which last for 5 minutes or more
• more than 6 uterin contractions during a 10 minutes period
• Ropivacaine contraindication
• sufentanil contraindication