63
Participants
Start Date
November 1, 2022
Primary Completion Date
November 30, 2023
Study Completion Date
December 25, 2023
Hydromorphone combined with ropivacaine
1mg hydromorphone was added to 0.375% ropivacaine for a total of 30ml to perform quadrat block
Ropivacaine
A mixture of 0.375% ropivacaine for a total of 30ml was used for quadrate block
Second Hospital of Jilin University, Changchun
Second Hospital of Jilin University
OTHER