Abstract
Exercise-induced laryngeal obstruction is a paradoxical laryngeal closure during inspiration at high-intensity exercise, with supraglottic closure being most common. This study develops a model based on the computational fluid dynamics to investigate airflow velocity and pressure and the air-induced loads on the supraglottis at various inspiratory flow rates. It is found that at high flow rates, positive wall pressure is formed in the hypopharynx localise towards its lower region, while posterior supraglottic wall pressures shift from positive to negative. These findings suggest that high inspiratory flow rates may increase supraglottic pressure differentials, ultimately contributing in the collapse.
Original language | English |
---|---|
Number of pages | 16 |
Journal | Computer Methods in Biomechanics and Biomedical Engineering |
Early online date | 12 Sep 2022 |
DOIs | |
Publication status | E-pub ahead of print - 12 Sep 2022 |
Keywords
- Supraglottis
- Inducible laryngeal obstruction
- Upper respiratory tract
- Inspiratory airflow
- Air-induced loads