Key result
Transvenous catheter ablation of the atrioventricular conduction system resulted in 95.5% of patients being free of symptoms and requiring no antiarrhythmic therapy at follow-up.
Why the study?
Does transvenous catheter ablation of the atrioventricular conduction system improve symptoms and eliminate the need for antiarrhythmic therapy in patients with refractory supraventricular arrhythmias?
Observational (n=22)
Does transvenous catheter ablation of the atrioventricular conduction system improve symptoms and eliminate the need for antiarrhythmic therapy in patients with refractory supraventricular arrhythmias?
Transvenous catheter ablation of the AV node with permanent pacemaker implantation is an effective, less invasive alternative to open-heart surgery for refractory supraventricular arrhythmias.
May support AV nodal ablation with pacing in refractory SVT; hypothesis-generating and should not yet change practice.
Twenty-two patients with refractory supraventricular arrhythmias were treated by catheter-delivered high-energy shocks to the atrioventricular conduction system. All patients had a minimum follow-up period of six months (mean +/- SD, 15 +/- 9 months), at which time 21 of the 22 patients were free of symptoms and required no antiarrhythmic therapy. Permanent pacemakers were implanted in all patients. These results show that transvenous ablation or modification of atrioventricular conduction is a safe and effective technique to treat a wide range of supraventricular arrhythmias, and obviates the need for open-heart surgery for the interruption of atrioventricular nodal conduction.
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Grigg et al. (1988) conducted an observational in Refractory supraventricular arrhythmias (n=22). Transvenous catheter ablation of the atrioventricular conduction system was evaluated on Freedom from symptoms and no requirement for antiarrhythmic therapy. Transvenous catheter ablation of the atrioventricular conduction system resulted in 95.5% of patients being free of symptoms and requiring no antiarrhythmic therapy at follow-up.
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