Abstract
A 60-years-old male with remote anterior myocardial infarction (MI) was referred for catheter ablation of electrical storm related to monomorphic ventricular tachycardia (MVT). Radiofrequency applications targeting pre-systolic potentials abolished all clinical MVTs.Scar-associated Purkinje-related MVT mimicking fascicular VT is a rare mechanism of post-MI MVT. The surviving Purkinje cells within scar border zones, responsible for VF during acute MI, may also generate MVT after scar organization occurring with time or after VF ablation. Identification of this mechanism is useful as ablation of a limited area can rapidly eliminate several MVTs.
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