title: EKG of the month.
mesh_terms: D006332:Cardiomegaly / Q000175:diagnosis*; D004562:Electrocardiography; D006352:Heart Ventricles; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000175:diagnosis*