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Resting Oxygen Consumption Estimates in Scleroderma Can Lead to Underestimation of Cardiac Output
Oscar Cullen1, Laura Ross2,3, Jessica L Fairley2,3
1HEART Lab, St Vincent's Institute of Medical Research Fitzroy Australia.
Pulmonary Circulation
|March 12, 2026
Abstract
None:
Accurate resting oxygen consumption (rVO2) quantification is critical for Fick-derived cardiac output calculations. Yet, clinical practice predominantly uses empirical estimations, which can be inaccurate. We evaluated the established rVO₂ prediction equations against direct metabolic cart measurements in systemic sclerosis patients, revealing significant discordances with potential diagnostic implications.

