100
Participants
Start Date
February 1, 2023
Primary Completion Date
December 31, 2025
Study Completion Date
December 31, 2025
Elective upper abdominal surgery
The included elderly patients are those who are preparing for elective upper abdominal surgery and the surgery time exceeds 2 hours.
RECRUITING
Department of Anesthesiology, Peking Union Medical College Hospital, Beijing
Peking Union Medical College Hospital
OTHER