Radiofrequency catheter ablation of ventricular tachycardia from the right ventricle late after myocardial infarction

In summary, this case illustrates how complex VT circuits may be. If the findings of this case are substantiated with additional cases, mapping and radiofrequency energy application from the right ventricle would have to be considered in VT with a left bundle branch block QRS morphology, whenever ablation from the left ventricle is ineffective.