58
Participants
Start Date
April 1, 2013
Primary Completion Date
December 1, 2015
Study Completion Date
December 15, 2015
DPNB
Patients receive DPNB 30min before extubation at the end of operation
Tramadol
Patients receive intravenous tramadol 1.5mg/kg 30min before extubation at the end of operation.
West China Hospital, Sichuan University, Chengdu
West China Hospital
OTHER