Key result
Atrioventricular junctional activity was observed in 98% of successful slow-pathway ablations versus 43% of unsuccessful attempts, indicating its absence strongly predicts an unsuccessful application.
Why the study?
Does the presence and origin of atrioventricular junctional rhythm predict successful radiofrequency ablation of slow-pathway conduction in patients with AVNRT?
Population
43 consecutive patients with atrioventricular node reentrant tachycardia undergoing selective ablation of…
Comparison
Radiofrequency catheter ablation of slow-pathway… vs Unsuccessful ablation attempts and pacing from…
Design
Cohort
Authors
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Junctional rhythm during slow pathway ablation is sensitive but nonspecific for success; leaves open its role as a reliable procedural endpoint.
Observational (n=43)
Does the presence and origin of atrioventricular junctional rhythm predict successful radiofrequency ablation of slow-pathway conduction in patients with AVNRT?
Absolute Event Rate: 98% vs 43%
The absence of atrioventricular junctional rhythm during radiofrequency ablation strongly predicts an unsuccessful attempt at slow-pathway ablation in AVNRT, and these beats appear to exit remotely from the anterior atrial septal region.
Yu et al. (1996) conducted an observational in Atrioventricular node reentrant tachycardia (n=43). Successful radiofrequency ablation of slow-pathway conduction vs. Unsuccessful ablation attempts was evaluated on Atrioventricular junctional activity. Atrioventricular junctional activity was observed in 98% of successful slow-pathway ablations versus 43% of unsuccessful attempts, indicating its absence strongly predicts an unsuccessful application.
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