Vectorcardiogram in pulmonary emphysema: its relationship to scalar electrocardiographic findings.
D001991:Bronchitis / Q000503:physiopathology; D006332:Cardiomegaly / Q000175:diagnosis; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D011656:Pulmonary Emphysema / Q000503:physiopathology*; D014672:Vectorcardiography