title: EKG of the month.
mesh_terms: D000328:Adult; D002037:Bundle-Branch Block / Q000175:diagnosis*; D006328:Cardiac Catheterization; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology*; D006343:Heart Septal Defects / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008297:Male