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- W2912215075 abstract "Success rate of ventricular tachycardia (VT) ablation remains sub-optimal. Current technology does not allow fast and accurate delineation of the ablation target. Noninvasive panoramic ECG-imaging (ECGI) offers the possibility of studying the interaction between arrhythmogenic substrate and earliest sites of activation during VT to improve ablation strategies. ECGI mapping (CardioInsight, Medtronic) was performed in 5 patients undergoing VT ablation. Ventricular pacing was delivered from the RV and three indices were measured at each ventricular site to map susceptibility to arrhythmia initiation: Re-entry vulnerability index (RVI), local dispersion of AT (ΔAT) and local dispersion of repolarization (ΔARI). Regions of high susceptibility were defined as those corresponding to the bottom 5% of RV I and the upper 5% of ΔAT and ΔARI. Morphologically distinct VTs were analyzed to measure the AT sequence and localize the region of earliest epicardial activation (AT 0.13 for all pair-wise comparison). The vulnerable region presented at least partial overlap with the region of earliest activation during VT in 50%, 55% and 50% of all VTs for RV I, ΔAT and ΔARI, respectively. These early data confirm the mechanistic link between markers of arrhythmogenic risk and VT initiation and suggest that ECGI could be potentially used for targeting ablation in non-inducible or hemodynamically non-tolerated VTs." @default.
- W2912215075 created "2019-02-21" @default.
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- W2912215075 date "2018-12-30" @default.
- W2912215075 modified "2023-09-23" @default.
- W2912215075 title "Early Results on the Utilisation of ECG-Imaging During Catheter Ablation Procedures for Prediction of Sites of Earliest Activation During Re-entrant Ventricular Tachycardia" @default.
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- W2912215075 doi "https://doi.org/10.22489/cinc.2018.283" @default.
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