180
Participants
Start Date
November 16, 2021
Primary Completion Date
June 6, 2023
Study Completion Date
June 6, 2023
Normal saline
Normal saline infusion simultaneous with subarachnoid block
Norepinephrine
Different infusion dose of norepinephrine simultaneous with subarachnoid block
General Hospital of Ningxia Medical University, Yinchuan
General Hospital of Ningxia Medical University
OTHER