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Abstract
To the Editor: A 73-year-old man presented to Department of Cardiology at Xinhua Hospital, Shanghai Jiaotong University School of Medicine with a history of anterior wall myocardial infarction (MI) and multimorphic ventricular tachycardia (VT) in approximately September 2013. A limited activation map demonstrated early activation at the apex and the lateral aspect of the scar, with a local electrogram preceding the onset of the QRS by approximately 70 ms. Entrainment mapping near these locations demonstrated concealed entrainment with a postpacing interval minus tachycardia CL of 15 ms. Ablation at these sites resulted in immediate VT termination. Some VTs failed to ATP therapy can lead to a delay in appropriate therapy, even contribute to a negative consequence. [...]RFCA has become an important tool for the successful management of these VTs. Recurrent ventricular tachycardia after catheter ablation in post-infarct cardiomyopathy: "Failure" of ablation or progression of the substrate? J Am Coll Cardiol...