76
Participants
Start Date
March 10, 2020
Primary Completion Date
June 10, 2021
Study Completion Date
December 10, 2021
Paravertebral block-ropivacaine
Inject 25 ml 0.5% ropivacaine in the T8 paravertebral space followed with catheter insertion and continuous 0.2% ropivacaine infusion(infusion rate: 0.125ml/kg/pulse,1pulse/h)
Paravertebral block-saline
Inject 25 ml 0.9% saline in the T8 paravertebral space followed with catheter insertion and continuous 0.9% saline infusion(infusion rate: 0.125ml/kg/pulse,1pulse/h)
patient controlled analgesia with morphine
Morphine was given as intravenous patient-controlled analgesia bolus: 1-2mg, lock time: 5min, 1h limitation: 8mg
Peking Union Medical College Hospital, Beijing
Cui Xulei
OTHER