Background: It is not known whether the number of revascularizations modifies clinical outcomes in patients with ischemic cardiomyopathy (ICM) implanted with cardiac resynchronization therapy defibrillator (CRT-D) vs. an implantable cardioverter-defibrillator (ICD)-only. Methods: In Multicenter Automatic Defibrillator Implantation Trial-Cardiac Resynchronization Therapy (MADIT-CRT), we evaluated the effect of CRT-D vs. ICD-only on heart failure (HF) or death, on ventricular tachycardia (VT), ventricular fibrillation (VF) or death, and on ]; p < 0.001). Similarly, there was a risk reduction of VT/ /VF/death with CRT-D vs. ICD-only in patients with no need for revascularization ; p = 0.044); with 1 revascularization ]; p = 0.23); or with ≥ 2 revascularizations ; p = 0.14). There was a similar degree of left ventricular reverse remodeling in all three LVEDV, (Cardiol J 2016; 23, 4: 437-445)

Left bundle branch block following inferior myocardial infarction remains uncommon and scarcely reported in the literature. We describe a rare presentation of a 58-year-old male patient who developed left bundle branch block and third degree atrioventricular block after inferior myocardial infarction requiring permanent pacemaker placement. Pathophysiology, impact on mortality, and management options are discussed.

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