50
Participants
Start Date
September 15, 2018
Primary Completion Date
February 14, 2019
Study Completion Date
February 17, 2019
transverse scan, in-plane, posterior-anterior TMQLB
The patients will receive the transmuscular quadratus lumborum block(TMQLB) before surgery using the transverse scan, in-plain, posterior to anterior approach. 0.6ml/kg 0.375% ropivocaine is injected when the correct needle location is confirmed.
paramedian sagittal scan, in-plane, caudal-cranial TMQLB
The patients will receive the transmuscular quadratus lumborum block(TMQLB) before surgery using the paramedic sagittal scan, in-plain, caudal-cephalic approach.0.6ml/kg 0.375% ropivocaine is injected when the correct needle location is confirmed.
Peking Union Medical College Hospital, Beijing
Peking Union Medical College Hospital
OTHER