NIOSHTIC-2 Publications Search

Standard flow-time waveforms for testing of PEF meters.

Hankinson JL; Crapo RO

Am J Respir Crit Care Med 1995 Aug; 152(2):696-701

https://doi.org/10.1164/ajrccm.152.2.7633728

00232462

A set of 26 flow/time waveforms, developed to evaluate peak expiratory flow (PEF) meters, were described. Flow/time waveforms were obtained from 26 subjects participating in various NIOSH studies. Spirometric analyses were conducted on each subject and the temperature of the exit air was measured. The waveforms were filtered, and phase distortion was eliminated. PEFs were calculated using two different methods: the first determined PEF from flow/time data and the second from volume/time data. Differences of up to 10.7% resulted in comparisons of PEFs obtained from flow time curves and volume time curves when the waveform had a fast rise time. The differences between these values were very small for waveforms with slower rise times. The method used to determine the flow for volume time curves was seen to influence the PEF. From this study the authors conclude that the 26 flow time waveforms investigated can be used to test PEF meters, and also to define PEF in testing software algorithms.

NIOSH-Author; Spirometry; Respiration; Analytical-methods; Analytical-models; Mathematical-models; Measurement-equipment; Pulmonary-function-tests

Dr. John L. Hankinson, National Institute for Occupational Safety and Health, Division of Respiratory Disease Studies,1095 Willowdale Road, Morgantown, WV26505

AJCMED

19950801

Journal Article

1995

2

1073-449X

DRDS

American Journal of Respiratory and Critical Care Medicine

WV