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.
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.
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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.
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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