200
Participants
Start Date
June 1, 2019
Primary Completion Date
February 28, 2022
Study Completion Date
March 30, 2022
Dexmedetomidine
In dexmedetomidine groups, patients will be pumped 0.1ml/kg of dexmedetomidine (contained dexmedetomidine 0.25/0.5/0.75µg/kg in Group D0.25/D0.5/D0.75) for 15min before anesthesia induction, following continuous infusion at the rate of 0.125ml/kg/h until the end of operation.
Normal saline
normal saline
Midazolam
midazolam
Zhenjiang First People's Hospital, Zhenjiang
Zhenjiang First People's Hospital
OTHER