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Background: Ventricular fibrillation (VF) during acute ischemia is linked to increased dispersion of ventricular repolarization (DOR), which is considered a robust marker of arrhythmic susceptibility. In previous works, we showed that a time-warping-based index quantifying morphological changes from the T-wave peak to the T-wave end over a PCA transform lead, dPCAw,Tpe, outperformed the T-peak-to-
