title: Primary pulmonary hypertension--clinical and haemodynamic features.
mesh_terms: D000293:Adolescent; D000328:Adult; D006328:Cardiac Catheterization / Q000009:adverse effects; D002648:Child; D004562:Electrocardiography; D005260:Female; D006326:Heart Auscultation; D006439:Hemodynamics; D006801:Humans; D006976:Hypertension, Pulmonary / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D008297:Male; D011651:Pulmonary Artery; D011859:Radiography