Key result
High-resolution mapping of Koch's triangle in AVJRT patients localized the posterior slow pathway exit site to 15 +/- 4 mm from the His bundle, showing double electrograms are an imprecise guide.
Population
13 patients with atrioventricular junctional (AV nodal) reentrant tachycardia (AVJRT)
Design
Case_series
Authors
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High-resolution mapping may render double electrograms unreliable for slow-pathway ablation in AVJRT; leaves open need for prospective outcome trials.
Observational (n=13)
High-resolution mapping identifies distinct anterior and posterior atrionodal connections in AVJRT and reveals that complex atrial electrograms are imprecise targets for slow pathway ablation.
McGuire et al. (1993) conducted an observational in Atrioventricular junctional reentrant tachycardia (AVJRT) (n=13). High resolution mapping using a 60-point plaque electrode was evaluated on Localization of atrionodal connections and spatial distribution of atrial electrogram morphologies over Koch's triangle. High-resolution mapping of Koch's triangle in AVJRT patients localized the posterior slow pathway exit site to 15 +/- 4 mm from the His bundle, showing double electrograms are an imprecise guide.
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