Modeling of Airflow in the Pharynx With Application to Sleep Apnea-Reference-Cited by-同舟云学术

Modeling of Airflow in the Pharynx With Application to Sleep Apnea

Published:1998-06-01 Issue:3 Volume:120 Page:416-422
ISSN:0148-0731
Container-title:Journal of Biomechanical Engineering
language:en
Short-container-title:

Author:

Shome B.¹,Wang L.-P.¹,Santare M. H.¹,Prasad A. K.¹,Szeri A. Z.¹,Roberts D.²

Affiliation:

1. Department of Mechanical Engineering, University of Delaware, Newark, DE 19716-3140

2. Anatek, Inc., Kennett Square, PA 19348

Abstract

A three-dimensional numerical modeling of airflow in the human pharynx using an anatomically accurate model was conducted. The pharynx walls were assumed to be passive and rigid. The results showed that the pressure drop in the pharynx lies in the range 200-500 Pa. The onset of turbulence was found to increase the pressure drop by 40 percent. A wide range of pharynx geometries covering three sleep apnea treatment therapies (CPAP, mandibular repositioning devices, and surgery) were modeled and the resulting flow characteristics were investigated and compared. The results confirmed that the airflow in the pharynx lies in the laminar-to-turbulence transitional flow regime and thus, a subtle change in the morphology caused by these treatment therapies can significantly affect the airflow characteristics.

Publisher

ASME International

Subject

Physiology (medical),Biomedical Engineering

Link

http://asmedigitalcollection.asme.org/biomechanical/article-pdf/120/3/416/5574608/416_1.pdf

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