What question did this study set out to answer?

To evaluate the feasibility, electrophysiological effects, and safety of using transcatheter radiofrequency current to modify atrioventricular nodal conduction in patients with supraventricular arrhythmias.

December 1, 1988Journal of Interventional Cardiology

Transcatheter Modulation of Atrioventricular Nodal Conduction by Radiofrequency Current

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Why the study?

Does radiofrequency current delivered to the AV node alter AV nodal conduction properties in patients with supraventricular arrhythmias?

Population

13 patients with supraventricular arrhythmias, maximal heart rate 215/min.

Design

Case_series

Follow-up

mean 10 ± 3 months

Authors

KKKlaus-Peter KunzePhilipps University of Marburg MSMichael SchlüterUniversity of Bonn MGManfred GeigerIU International University of Applied Sciences

Discussion

Member takes

Implication

Suggests AV nodal radiofrequency may modulate SVT conduction; leaves open need for controlled trials before clinical adoption.

Key Points

To evaluate the feasibility, electrophysiological effects, and safety of using transcatheter radiofrequency current to modify atrioventricular nodal conduction in patients with supraventricular arrhythmias.
Radiofrequency current was delivered via catheter to the atrioventricular node in 13 patients with supraventricular arrhythmias (maximal heart rate 215/min), including atrial fibrillation (n=9), atrioventricular nodal reentrant tachycardia (n=3), and accessory pathway mediated tachycardia (n=1).
Electrophysiological parameters, including atrioventricular nodal conduction time and antegrade effective refractory period, were assessed, and patients were followed for a mean duration of 10 ± 3 months.
Radiofrequency current application significantly increased atrioventricular nodal conduction time and antegrade atrioventricular nodal effective refractory period in 10 of 13 patients; the remaining 3 non-responsive patients underwent direct current shock ablation.
During 10 ± 3 months of follow-up, all 10 successfully treated patients remained completely asymptomatic without requiring antiarrhythmic medications, with zero procedural or post-procedural complications observed.

Structured PICO

Does radiofrequency current delivered to the AV node alter AV nodal conduction properties in patients with supraventricular arrhythmias?

Population

13 patients with supraventricular arrhythmias (9 atrial fibrillation, 3 AV nodal reentrant tachycardia, 1 accessory pathway mediated AV tachycardia), maximal heart rate 215/min.

Intervention

Radiofrequency current delivered to the AV node via a catheter

Outcome

AV nodal conduction time and antegrade AV nodal effective refractory periodsurrogate

Transcatheter radiofrequency current application to the AV node successfully modulates conduction and provides symptomatic relief in patients with supraventricular arrhythmias without complications.

Cite This Study

Kunze et al. (1988) studied this question.

synapsesocial.com/papers/6a10d0562c0ee39daeee3fbd https://doi.org/10.1111/j.1540-8183.1988.tb00948.x

Topics

Atrial fibrillation Persistent AF management AF ablation outcomes

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Transcatheter Modulation of Atrioventricular Nodal Conduction by Radiofrequency Current

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Transcatheter Modulation of Atrioventricular Nodal Conduction by Radiofrequency Current

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Topics

Also Consider