title: [Cardiopulmonary response to exercise in patients with pulmonary arterial hypertension of unknown etiology].
mesh_terms: D006334:Heart Function Tests; D006439:Hemodynamics; D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology / Q000503:physiopathology*; D005082:Physical Exertion; D012119:Respiration; D012129:Respiratory Function Tests; D012146:Rest
vernacular_title: Respuesta cardiopulmonar al ejercicio en pacientes con hipertensión arterial pulmonar de etiología desconocida.