248
Participants
Start Date
January 14, 2019
Primary Completion Date
April 30, 2020
Study Completion Date
July 30, 2020
Methylene Blue
2mg/kg MB diluted with normal saline into total 50 ml volume intravenous administration after induction of anesthesia within one hour.
Placebo
normal saline in total 50 ml volume intravenous administration after induction of anesthesia within one hour.
Huashan Hospital, Shanghai
Fudan University
OTHER