48
Participants
Start Date
December 4, 2023
Primary Completion Date
May 1, 2025
Study Completion Date
May 1, 2025
high-flow nasal cannula
In group H, mask ventilation was performed after the patient lost spontaneous breathing until the end-expiratory oxygen concentration reached 90 %. The lower mask was taken and HFNC was used to record the patient 's safe apnea time.
RECRUITING
Department of Anaesthesiology and Perioperative Medicine, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou
Henan Provincial People's Hospital
OTHER