Reliability and Physiological Interpretation of Pulmonary Gas Exchange by “Circulatory Equivalents” in Chronic Heart Failure

Reliability and Physiological Interpretation of Pulmonary Gas Exchange by “Circulatory Equivalents” in Chronic Heart Failure

BackgroundPeak ratios of pulmonary gas‐exchange to ventilation during exercise (V˙O2/V˙E and V˙CO2/V˙E, termed “circulatory equivalents”) are sensitive to heart failure (HF) severity, likely reflecting low and/or poorly distributed pulmonary perfusion. We tested whether peak V˙O2/V˙E and V˙CO2/V˙E w...

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Bibliographic Details
Main Authors: Chunting Tan, Harry B. Rossiter, Janos Porszasz, T. Scott Bowen, Klaus K. Witte, William W. Stringer, Richard Casaburi, James E. Hansen
Format: Article
Language:English
Published: Wiley 2018-04-01
Series:Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Subjects:
cycle ergometry
heart failure
incremental exercise
lactate threshold
ventilatory compensation
Online Access:https://www.ahajournals.org/doi/10.1161/JAHA.117.008072

Internet

https://www.ahajournals.org/doi/10.1161/JAHA.117.008072

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