title: [Comparative study of the direct measurement and echocardiographic observation of pulmonary pressure in healthy adults and patients with the chronic obstructive pulmonary diseases at high altitude].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000531:Altitude; D001794:Blood Pressure; D001795:Blood Pressure Determination; D004452:Echocardiography; D005260:Female; D006352:Heart Ventricles / Q000473:pathology; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000503:physiopathology*; D011660:Pulmonary Heart Disease / Q000503:physiopathology*; D012016:Reference Values