Key result
Slow pathway catheter ablation for AVNRT achieves a ~95% success rate with minimal complication risks.
Why the study?
The exact circuit of atrioventricular nodal re-entrant tachycardia still eludes us, even though it is the most common regular arrhythmia in humans and the most frequently encountered during catheter ablation for regular tachycardias.
Catheter ablation is highlighted as the current treatment of choice for symptomatic patients with AVNRT.
Supports ablation as standard for symptomatic AVNRT; leaves open need for updated RCTs on long-term outcomes.
Although the exact circuit of atrioventricular nodal re-entrant tachycardia (AVNRT) still eludes us, AVNRT is the most common regular arrhythmia in humans, and therefore the most commonly encountered during ablation attempts for regular tachycardias. Catheter ablation for AVNRT is the current treatment of choice in symptomatic patients. It reduces arrhythmia-related hospitalisations and costs, and substantially improves quality of life. Catheter ablation approaches aimed at the fast pathway have been abandoned; slow pathway ablation, using a combined anatomical and mapping approach, is now the method of choice. This approach offers a success rate of 95 %, has a recurrence rate of approximately 1.3–4.0 %, and has been associated with a low risk of atrioventricular (AV) block that in most, but not all, studies is <1 %.
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Demosthenes G. Katritsis (2018) conducted a review in Atrioventricular nodal re-entrant tachycardia (AVNRT). Slow pathway catheter ablation was evaluated on Procedural success rate. Slow pathway catheter ablation for AVNRT achieves a 95% success rate, a 1.3–4.0% recurrence rate, and a <1% risk of atrioventricular block.
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