Repolarization and Activation Mapping in Ventricular Tachycardia Ablation: The REDEEM Study

The REDEEM study aimed to evaluate a novel sinus rhythm mapping technique that combines repolarization and activation mapping to identify critical isthmus sites during ventricular tachycardia (VT) ablation. The findings demonstrated that the proposed method effectively identified anatomical associations with VT isthmus sites, with a notable overlap of repolarization cliffs and deceleration zones with VT exit and entrance sites. This study suggests the potential of the REDEEM method for improving VT ablation strategies, warranting further prospective validation.