287
Participants
Start Date
January 1, 2019
Primary Completion Date
September 1, 2022
Study Completion Date
September 30, 2022
Low molecular weight heparin
patients began to use low molecular weight heparin or warfarin sodium tablets.
non anticoagulant therapy group
no anticoagulant was used after operation.
The First Affiliated Hospital of Chongqing Medical University, Chongqing
First Affiliated Hospital of Chongqing Medical University
OTHER