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Am Rev Respir Dis. 1988 Apr;137(4):872-6.

Airflow and normal lung sounds.

Author information

1
Biomedical Engineering Unit, McGill University, Montreal, Quebec, Canada.

Abstract

The relationship between total air flow and normal breath sounds recorded at 2 sites on the chest was investigated. Sounds were measured during rhythmic breathing, during flow rate tracking, and during flow rate tracking against an external resistance by subjects seated and in the left lateral decubitus position. The sound amplitude during inspiration varied directly with the square of the air flow at the mouth. Changes in subject position and breathing pattern altered the gain between the square of the flow and the sound amplitude but not the functional relationship.

PMID:
3354994
DOI:
10.1164/ajrccm/137.4.872
[Indexed for MEDLINE]

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