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The rapid growth in the complexity of interventional electrophysiology made the inherent limitation of fluoroscopic imaging quite clear. Although three-dimensional (3D) electroanatomic mapping and preprocedural anatomic imaging have been important in augmenting our intraprocedural understanding of cardiac and extracardiac anatomy,…

Key Points Mechanism The mechanism of postinfarction monomorphic ventricular tachycardia (VT) is generally reentrant myocardial excitation through surviving myocyte bundles within the infarct scar. Diagnosis and Mapping The diagnosis is made by excluding supraventricular and preexcited causes of broad complex…