248
Participants
Start Date
October 1, 2021
Primary Completion Date
April 30, 2024
Study Completion Date
September 30, 2024
speaking valve combined with airway pressure
All patients were given speaking valves and airway pressure was measured to assess upper airway patency.
Bronchoscopy
The same examiner performed bronchoscopy on all patients to assess upper airway patency.
Beijing Rehabilitation Hospital of Capital Medical University, Beijing
Capital Medical University
OTHER