Guarded low dose radiofrequency ablation successfully eliminated incessant junctional ectopic tachycardia without causing AV block and improved left ventricular function in a 9-year-old boy.
Case Report (n=1)
Does guarded low dose radiofrequency ablation safely eliminate junctional ectopic tachycardia without causing AV block in a pediatric patient?
Guarded low dose radiofrequency ablation may be a safe and effective technique for eliminating junctional ectopic tachycardia near the His-bundle without causing AV block in pediatric patients.
The prognosis of junctional ectopic tachycardia has been poor. A 9-year-old boy with dilated cardiomyopathy and this incessant form of tachycardia underwent RF ablation. Without retrograde atrial depolarization during tachycardia, serials of low dose RF energy were applied near the His-bundle area to find out the arrhythmogenic foci. The optimal site for ablation showed rate acceleration at low dose application and rate slowing down followed by conversion upon increasing the energy. By using this guarded low dose ablation technique, the tachycardia was eliminated without AV block. The LV function also improved.
Wu et al. (Fri,) conducted a case report in Junctional ectopic tachycardia and dilated cardiomyopathy (n=1). Guarded low dose radiofrequency ablation was evaluated on Elimination of tachycardia and improvement in LV function. Guarded low dose radiofrequency ablation successfully eliminated incessant junctional ectopic tachycardia without causing AV block and improved left ventricular function in a 9-year-old boy.