Fig. 1From: Intra-aortic balloon pump still has a role in late-onset myocardial infarction complicated by ventricular septal rupture with intractable heart failure: a case reportElectrocardiogram showed a QRS low voltage that may suggest loss of viable myocardium. Lead V1-V4 showed QS pattern suggesting a previous myocardial infarction at anteroseptal regionBack to article page