What question did this study set out to answer?

This study aims to investigate anomalies in estimating pulmonary diffusing capacity using the single breath method.

A Theoretical and Experimental Analysis of Anomalies in the Estimation of Pulmonary Diffusing Capacity by the Single Breath Method

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Theoretical analysis reveals factors affecting pulmonary diffusing capacity estimation in a controlled setting, suggesting practical implications.

This study aims to investigate anomalies in estimating pulmonary diffusing capacity using the single breath method.
Conducted a theoretical examination of the single breath method for estimating pulmonary diffusing capacity.
Derived mathematical equations for carbon monoxide concentration during inspiration, breath holding, and expiration.
Performed experimental validation comparing theoretical predictions with data from normal subjects.
Anomalies in pulmonary diffusing capacity estimates correlate with variations in breath holding and sample collection methods.
Findings suggest that accounting for alveolar volume changes during the test can improve accuracy.
Collected 85-mL alveolar gas samples efficiently using evacuated tonometers.

Jones et al. (1961) studied this question.

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Theoretical analysis reveals factors affecting pulmonary diffusing capacity estimation in a controlled setting, suggesting practical implications.