171
Participants
Start Date
May 5, 2018
Primary Completion Date
September 1, 2018
Study Completion Date
September 1, 2018
Hydromorphone
0.002 mg\*kg-1 bolus with 0.002 mg\*kg-1 background infusion for group BH 0.002 mg\*kg-1 bolus without background infusion for group NBH Drug is administered through PCIA pump.
Morphine
0.015 mg\*kg-1 bolus without background infusion for group M Drug is administered through PCIA pump.
The second affiliated hospital of Zhejiang University, Hangzhou
Second Affiliated Hospital, School of Medicine, Zhejiang University
OTHER