200
Participants
Start Date
March 16, 2023
Primary Completion Date
June 15, 2023
Study Completion Date
August 28, 2023
Dexmedetomidine
loading dose of 0.45 microgram/ml dexmedetomidine plus 0.09% ropivacaine, maintenance dose of 0.36 microgram/ml dexmedetomidine plus 0.07% ropivacaine.
Sufentanil
loading dose of 0.45 microgram/ml sufentanil plus 0.09% ropivacaine, maintenance dose of 0.36 microgram/ml sufentanil plus 0.07% ropivacaine.
Peking University First Hospital, Beijin
Peking University First Hospital
OTHER