1,204
Participants
Start Date
September 1, 2022
Primary Completion Date
June 6, 2023
Study Completion Date
June 6, 2023
nasal mask oxygen kit
Using the nasal mask oxygen kit for oxygenation.
regular nasal cannula
Using nasal cannula for oxygenation.
Renji Hospital, Shanghai
Henan Provincial People's Hospital, Zhengzhou
First Affiliated Hospital of Kunming Medical University, Kunming
Henan Provincial People's Hospital
OTHER
First Affiliated Hospital of Kunming Medical University
OTHER
RenJi Hospital
OTHER