ArticleJournal of arrhythmia2026
Prevalence and Structured Approach to the Diagnoses of A on V Tachycardias.
Article in Journal of arrhythmia, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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24 authors.
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Abstract
Background: "A on V" tachycardia (AoV-T) is classically considered suggestive of atrioventricular nodal reentrant tachycardia (AVNRT); emerging evidence suggests that other mechanisms may present with this electrogram pattern. Objective: To reassess the prevalence and electrophysiologic characteristics of nonconventional mechanisms underlying AoV-T. Methods: We retrospectively reviewed 1484 consecutive electrophysiologic studies for narrow-QRS tachycardia with His-atrial interval ≤ 70 ms at 10 centers (2015-2024). Diagnoses were adjudicated using atrial overdrive pacing (AOP), ventricular overdrive pacing (VOP), and His-synchronized premature ventricular contractions (PVCs). Results: Mechanisms other than conventional AVNRT were identified in 24 patients (1.6%): atrial tachycardia (AT, Conclusion: Although AVNRT predominates in AoV-T, a small subset of cases reflects AT, JT, NV/NF-ORT, or AVNRT with a bystander NV pathway. Comprehensive pacing maneuvers are essential to avoid misclassification.
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