81
Participants
Start Date
March 31, 2014
Primary Completion Date
June 30, 2014
Study Completion Date
July 31, 2014
Dexmedetomidine
intranasal dexmedetomidine 1μg.kg-1，0.9% saline was added to make a final volume of 1 mL.all patients received intranasal medication at approximately 45-60 min before induction of anesthesia.
placebo
0.9% saline 1 mL all patients received intranasal medication at approximately 45-60 min before induction of anesthesia.
Guangzhou First Municipal People's Hospital, Guangzhou
Guangzhou First Municipal People's Hospital, Guangzhou
Guangzhou First People's Hospital
OTHER