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Several cardiovascular diseases are characterized by an impaired O2 kinetic during exercise. The lack of a linear increase of Δoxygen consumption (VO2)/ΔWork Rate (WR) relationship, as assessed by expired gas analysis, is considered an indicator of abnormal cardiovascular efficiency. We aimed at describing the frequency of ΔVO2/ΔWR flattening in a symptomatic population of cardiac patients, characterizing its functional profile, and testing the hypothesis that dynamic pulmonary hypertension and right ventricular contractile reserve play a major role as cardiac determinants.

Role of Right Ventricle and Dynamic Pulmonary Hypertension on Determining ΔVO 2 /ΔWork Rate Flattening

Role of Right Ventricle and Dynamic Pulmonary Hypertension on Determining ΔVO ₂ /ΔWork Rate Flattening