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November 25, 2019Circulation Arrhythmia and Electrophysiology

The reduction in VF events was significantly greater in patients with catheter ablation compared with 21 matched controls during 6-month periods (Poisson β-coefficient, 1.39; P=0.0003).

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Why the study?

Various strategies for VT ablation have been described, but their impact on VF is largely unknown.

Does substrate-based VT ablation targeting LAVA reduce recurrent VF events in patients with structural heart disease and both VT and VF?

Population

21 patients with structural heart disease and both VT and VF, plus 21 matched controls

Comparison

Catheter ablation targeting LAVAs vs matched controls without ablation

Design

Retrospective 2-center study

Follow-up

6 months

Authors

ΤKΤakeshi KitamuraPMPhilippe MauryALAnna Lam

Discussion

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Overview

Substrate ablation may reduce VF recurrences in structural heart disease; leaves open need for randomized confirmation.

Structured PICO

Does substrate-based VT ablation targeting LAVA reduce recurrent VF events in patients with structural heart disease and both VT and VF?

P
Population
42 patients (21 ablation, 21 matched controls) with structural heart disease and both ventricular tachycardia (VT) and ventricular fibrillation (VF). Ablation group: mean age 57±14 years, LVEF 30±10%.
I
Intervention
Substrate-based ventricular tachycardia (VT) catheter ablation targeting local abnormal ventricular activity (LAVA)
C
Comparator
Matched controls without ablation
O
Outcome
Recurrent ventricular fibrillation (VF) events at 6 monthshard clinical

Substrate-guided VT ablation targeting LAVAs significantly reduces recurrent VF events in patients with structural heart disease, suggesting shared arrhythmogenic substrates.

Cite This Study

Kitamura et al. (2019) studied this question.

synapsesocial.com/papers/6a1bdeca666b677c61a900adhttps://doi.org/10.1161/circep.118.006857
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