Are ICD electrogram recordings of triggering ectopy the key to successful ablation of polymorphic ventricular tachycardia/ventricular fibrillation?

Current guidelines recommend catheter ablation of reproducible stereotypic triggering ventricular ectopy for suppressing polymorphic ventricular tachycardia/ventricular fibrillation (PMVT/VF), both idiopathic, and in the setting of structural heart disease (1). Short coupled ventricular premature complexes (VPCs) with a coupling interval of 200-400 ms, typically with an ‘R on T’ wave appearance, were first documented to reproducibly trigger polymorphic VT either non-sustained or degenerating into VF in 1981 (2).
Source: Heart Rhythm - Category: Cardiology Authors: Source Type: research