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Supplemental Oxygen Decreases Cardiac Effort in Pulmonary Arterial Hypertension
18 January 2026
Kyle Norton, Bishal Gyawali, Deborah Haight, R. James White, Daniel Lachant
https://doi.org/10.1002/pul2.70245
Abstract
In this single-blind, crossover pilot study, supplemental oxygen at 2 L/min during 6-min walk test reduced Cardiac Effort in patients with pulmonary arterial hypertension, while 6-min walk distance remained unchanged. This decrease suggests improved physiology for an unchanged workload. Continuous electrocardiogram heart rate monitoring adds considerable value to the 6-min walk.
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