68
Participants
Start Date
December 31, 2015
Primary Completion Date
March 31, 2016
Study Completion Date
March 31, 2016
spinal anesthesia
bupivacaine injected by spinal puncture
general anesthesia
general anesthesia with intubation
Xijing Hospital, Fourth Military Medical University, Xi'an
Air Force Military Medical University, China
OTHER