Key result
Shortening of the AH interval during high-rate atrial pacing was significantly greater in patients achieving procedural success at first induction compared to others (14.6 vs 1.8 ms; P<0.01).
Why the study?
Does shortening of the atrial-His bundle interval during high-rate atrial pacing predict successful ablation in patients with typical AVNRT?
Observational (n=37)
Does shortening of the atrial-His bundle interval during high-rate atrial pacing predict successful ablation in patients with typical AVNRT?
Absolute Event Rate: 14.6% vs 1.8%
p-value: p=< 0.01
Shortening of the AH interval by >10 ms during high-rate atrial pacing is a strong intraprocedural predictor of successful slow pathway ablation for typical AVNRT.
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Offers a potential intraprocedural marker for successful AVNRT ablation; leaves open.
Nakano et al. (2017) conducted an observational in typical atrioventricular nodal re-entrant tachycardia (AVNRT) (n=37). Procedural success at first induction vs. Other patients (no success at first induction) was evaluated on AH interval shortening (ms) (p=< 0.01). Shortening of the AH interval during high-rate atrial pacing was significantly greater in patients achieving procedural success at first induction compared to others (14.6 vs 1.8 ms; P<0.01).
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