Tall upright T waves in the precordial leads.
D000787:Angina Pectoris / Q000175:diagnosis; D000818:Animals; D006332:Cardiomegaly / Q000175:diagnosis; D004285:Dogs; D004562:Electrocardiography; D005080:Exercise Test; D006331:Heart Diseases / Q000175:diagnosis*; D006452:Hemoglobinometry; D006801:Humans; D006947:Hyperkalemia / Q000175:diagnosis; D006973:Hypertension / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis; D009449:Neurocirculatory Asthenia / Q000175:diagnosis; D014511:Uremia / Q000175:diagnosis