Cardiology mediquiz, Case 9.
D006332:Cardiomegaly / Q000175:diagnosis; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006801:Humans; D007008:Hypokalemia / Q000175:diagnosis; D009203:Myocardial Infarction / Q000175:diagnosis; D013345:Subarachnoid Hemorrhage / Q000175:diagnosis*