Junctional ectopic tachycardia as an AVNRT catheter ablation complication in children

Junctional ectopic tachycardia (JET) occurs postoperatively or after catheter ablation in the region of Koch's triangle. The post-ablation incidence of JET reported in the medical literature is very low. We report the case of a 13-year-old female patient who underwent catheter ablation of the slow pathway for atrioventricular node reentrant tachycardia and subsequently developed JET. An accelerated automatic ectopic focus was found in the atrioventricular junction area due to radiofre-quency applications. Treatment with metoprolol, ivabradine, propafenone, and amiodarone was ineffective in stopping the arrhythmia. However, JET resolved within 30 days without other antiar-rhythmic drugs.