title: [A preliminary study on cardiac functions in chronic obstructive pulmonary disease].
mesh_terms: D000368:Aged; D002302:Cardiac Output; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D013599:Systole