90
Participants
Start Date
July 1, 2016
Primary Completion Date
June 30, 2017
Study Completion Date
June 30, 2017
Patient-Controlled Analgesia(PCA)
Patients receive analgesic regimens using Patient-Controlled Analgesia(PCA) with different background infusion.
Guangzhou General Hospital of Guangzhou Military Command, Guangzhou
Weifeng Tu
OTHER