The effect of nasal patency and anatomy during asymmetrical nasal high flow
Abstract
The asymmetrical cannula interface used during nasal high flow (NHF) causes unequal occlusion of the nares. This study demonstrates that physiological changes of nasal patency at the internal nasal valve, known as the nasal cycle, do not affect ventilation during NHF. In contrast, anatomical variability, such as differences in the cross-sectional area of the nares or severe nasal septum deviation, may substantially influence the generated pressure and could produce physiologically relevant effects during therapy.
Fields of Study & Subjects
Nasal Surgery and Airway Studies
Sinusitis and nasal conditions
Airway Management and Intubation Techniques
Publication details
- Journal / source
- Journal of Applied Physiology
- Publisher
- American Physiological Society
- Volume
- 140
- Issue
- 5
- Pages
- 1159–1168
- Publication date
- 28 March 2026
- Language
- EN