44
Participants
Start Date
May 31, 2015
Primary Completion Date
April 30, 2016
Study Completion Date
April 30, 2016
general anesthesia and patient controlled intravenous analgesia
Patients receive general anesthesia intraoperative period and continuous intravenous analgesia postoperation
spinal anesthesia and continuous postoperative epidural analgesia
Patients receive spinal anesthesia intraoperative period and continuous epidural analgesia postoperation
General Hospital of Ningxia Medical University
OTHER