Catheter ablation of paroxysmal supraventricular tachycardia.

Radiofrequency (RF) catheter ablation became first-line therapy for supraventricular tachycardia in patients with Wolff-Parkinson-White syndrome1–5 and atrioventricular (AV) nodal reentrant tachycardia (AVNRT)6–11 in the early 1990s. High ablation success ( 90%) and low complication rates ( 5%) were found by numerous investigators.1–11 This article describes these ablation techniques with a focus on approaches to ablation of the forms of accessory AV pathways and AVNRT that are difficult to ablate, as well as the less common variants.