Airflow Shape Is Associated With the Pharyngeal Structure Causing OSA.

ABSTRACT:

Background

OSA results from the collapse of different pharyngeal structures (soft palate, tongue, lateral walls, and epiglottis). The structure involved in collapse has been shown to impact non-CPAP OSA treatment. Different inspiratory airflow shapes are also observed among patients with OSA. We hypothesized that inspiratory flow shape reflects the underlying pharyngeal structure involved in airway collapse.

Methods

Subjects with OSA were studied with a pediatric endoscope and simultaneous nasal flow and pharyngeal pressure recordings during natural sleep. The mechanism causing collapse was classified as tongue-related, isolated palatal, lateral walls, or epiglottis. Flow shape was classified according to the degree of negative effort dependence (NED), defined as the percent

SUBMITTER: Genta PR 

PROVIDER: S-EPMC5812772 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature