1. Difference of oxygen uptake efficiency (OUE; oxygen uptake (V′O2)/minute ventilation (V′E)) plateau between a typical pulmonary arterial hypertension (PAH) patient and a “normal” control subject.
Difference of oxygen uptake efficiency (OUE; oxygen uptake (V′O2)/minute ventilation (V′E)) plateau between a typical pulmonary arterial hypertension (PAH) patient and a “normal” control subject. In normal subjects, OUE typically increases during exercise from rest to plateau and then gradually decreases until the end of exercise. It then further decreases in the immediate recovery period and begins stabilising after about 2 min. In PAH patients, OUE changes in a similar way to control subjects but is always lower than in controls in the transition from rest to the end of exercise. Reproduced from [48] with permission.
Stefania Farina et al. Eur Respir Rev 2018;27:170134
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