Po-709-03 the application of the re-entry vulnerability index to determine ventricular tachycardia exit from different pacing locations, in a porcine infarct model

The application of high-density electroanatomic (EA) and functional mapping strategies is a new frontier in ventricular tachycardia (VT) ablation. There is no definitive method to identify arrhythmogenic substrate, and ablation outcomes remain suboptimal. The re-entry vulnerability index (RVI) integrates unipolar activation and repolarisation timing, and low RVI values correlate with vulnerable sites of re-entrant VT origin.