Key result
RF ablation for AVNRT achieves ~99% procedural success, requiring junctional rhythm regardless of cycle length.
Why the study?
Junctional rhythm is generally accepted as required for successful AVNRT ablation, but detailed prospective studies evaluating its characteristics and impact on slow pathway conduction are lacking.
Do characteristics of junctional rhythm during radiofrequency ablation predict procedural success in patients with typical AVNRT?
Comparison
Impact and characteristics of individual RF applications with vs without JR
Design
Multicentre prospective observational study
Follow-up
Mean 15±6 months
Authors
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Junctional rhythm remains essential to confirm acute success in AVNRT ablation; this cohort study leaves open cycle length as a predictor.
Observational (n=67)
Yes
Do characteristics of junctional rhythm during radiofrequency ablation predict procedural success in patients with typical AVNRT?
Junctional rhythm is required for acute success in AVNRT ablation, but its cycle length does not predict success, and even short (<10s) RF applications can be effective.
Sugumar et al. (2020) conducted an observational in Atrioventricular nodal reentrant tachycardia (AVNRT) (n=67). Radiofrequency (RF) ablation was evaluated on Procedural success (≤1 AV nodal echo). Radiofrequency ablation for AVNRT achieved procedural success in 99% of patients, with junctional rhythm required during RF for acute success, though its cycle length was not predictive.
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