Electrophysiological characteristics of Purkinje potentials and the conduction system in premature ventricular contractions triggering ventricular fibrillation after myocardial infarction.

ABSTRACT:

Aims

Catheter ablation for premature ventricular contractions (PVCs) triggering ventricular fibrillation (VF) after acute myocardial infarction (AMI) has proven effective, with Purkinje potentials often serving as the target. However, the electrophysiological features of Purkinje potentials and their relationship with the conduction system in VF-triggering PVCs remain unclear.

Methods

This multicentre retrospective study analysed patients who underwent catheter ablation for VF-triggering PVCs during the acute or subacute phase of AMI. Characteristics of Purkinje potentials, including retrograde conduction from the Purkinje network and subsequent anterograde conduction to the right bundle branch (RB), were evaluated for PVC morphology.

Results

Fifty-three patients (mea

SUBMITTER: Hayashi T 

PROVIDER: S-EPMC12696382 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature