Abstract:Background
Cardiopulmonary exercise test (CPET) provides information about the pathophysiology of the exercise limitation. CPET parameters in pulmonary arterial hypertension (PAH) exhibit distinctive features, such as low peak oxygen uptake (pVO2), low end tidal carbon dioxide tension (PetCO2) and high ventilation-carbon dioxide slope (VE/VCO2).Pulmonary veno-oclussive disease (PVOD) is a PAH subgroup with particular underlying physiology, difficult diagnosis and poor prognosis.
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