title: Correlations of electrocardiographic features with airway obstruction in chronic bronchitis.
mesh_terms: D000328:Adult; D000368:Aged; D000402:Airway Obstruction; D001991:Bronchitis / Q000503:physiopathology*; D002245:Carbon Dioxide / Q000097:blood; D002908:Chronic Disease; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood; D010313:Partial Pressure; D011656:Pulmonary Emphysema / Q000503:physiopathology; D011660:Pulmonary Heart Disease / Q000175:diagnosis; D012123:Pulmonary Ventilation; D014797:Vital Capacity
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen