Reentrant atrial tachycardia after catheter ablation of coronary sinus accessory pathway.

ABSTRACT: Some patients require radiofrequency catheter ablation (RFCA) within the coronary sinus (CS) to eliminate conduction through accessory pathways (APs). A 23-year-old man was diagnosed with atrioventricular reentrant tachycardia (AVRT) utilizing a left-sided AP as the retrograde limb and was successfully treated by RFCA within the CS. Following the RFCA, another form of narrow QRS complex tachycardia was observed, and an electrophysiology study revealed the tachycardia as reentrant atrial tachycardia (AT) involving the CS. RFCA within the CS successfully terminated the tachycardia. This is the first case of iatrogenic reentrant AT secondary to RFCA for AVRT.

Learning objective

Radiofrequency catheter ablation (RFCA) is the standard treatment for atrioventricular reentrant tachycardia

SUBMITTER: Watanabe K 

PROVIDER: S-EPMC12861948 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature