Incorporating the gas analyzer response time in gas exchange computations
- 1 November 1979
- journal article
- research article
- Published by American Physiological Society in Journal of Applied Physiology
- Vol. 47 (5), 1118-1122
- https://doi.org/10.1152/jappl.1979.47.5.1118
Abstract
A simple method for including the gas analyzer response time in the breath-by-breath computation of gas exchange rates is described. The method uses a difference equation form of a model for the gas analyzer in the computation of oxygen uptake and carbon dioxide production and avoids a numerical differentiation required to correct the gas fraction wave forms. The effect of not accounting for analyzer response time is shown to be a 20% underestimation in gas exchange rate. The present method accurately measures gas exchange rate, is relatively insensitive to measurement errors in the analyzer time constant, and does not significantly increase the computation time.This publication has 4 references indexed in Scilit:
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