Changing spectrum of electrocardiographic findings in a chest disease hospital.
D000367:Age Factors; D001145:Arrhythmias, Cardiac / Q000453:epidemiology; D001281:Atrial Fibrillation / Q000453:epidemiology; D001282:Atrial Flutter / Q000453:epidemiology; D002037:Bundle-Branch Block / Q000453:epidemiology; D006332:Cardiomegaly / Q000453:epidemiology; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000453:epidemiology; D006331:Heart Diseases / Q000453:epidemiology*; D006782:Hospitals, Special; D006801:Humans; D008171:Lung Diseases / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology; D011660:Pulmonary Heart Disease / Q000453:epidemiology; D012737:Sex Factors; D013610:Tachycardia / Q000453:epidemiology; D013714:Tennessee; D013997:Time Factors; D014927:Wolff-Parkinson-White Syndrome / Q000453:epidemiology