599
Participants
Start Date
August 1, 2014
Primary Completion Date
May 29, 2015
Study Completion Date
April 25, 2017
No neuraxial labor analgesia
Neuraxial analgesia will not be performed. Analgesics will be prescribed by the obstetricians according to routine practice.
Neuraxial labor analgesia
Epidural or combined spinal-epidural labor analgesia will be performed when the cervix is dilated to 1 cm or more and continued until the cervix is fully dilated to 10 cm.
Beijing Obstetrics and Gynecology Hospital
OTHER
Beijing Haidian Maternal and Child Health Hospital
OTHER
Peking University First Hospital
OTHER