Paroxysmal ventricular tachycardia as a rare complication of interventional closure of ventricular spetal defect and its treatment by radiofrequency catheter ablation

INTRODUCTION: Trans-catheter closure of peri-membranous ventricular septal defects (VSDs) using Amplatzer-Type devices, has been widely reported in the past decade. We hereby report a rare complication of frequent premature ventricular contractions (PVCs) and paroxysmal ventricular tachycardia (PVT) sustained 48 days after the closure of VSD.More importantly, the arrhythmias were successfully treated with radiofrequency catheter ablation (RFCA) after medical therapy failed to restore and maintain sinus rhythm. PATIENT CONCERNS: We reported an 8-year-old boy with frequent PVCs and PVT sustained 48 days after the closure of VSD. The boy has no palpitation, chest distress and other uncomfortable symptoms. DIAGNOSIS: This patient was diagnosed as frequent PVCs and PVT by Holter monitoring for 24 hours. INTERVENTIONS: RFCA was administered. OUTCOMES: The patient was discharged 48 hours with no complication and remained asymptomatic 12 months after the ablation. CONCLUSION: Radiofrequency ablation helps treat PVCs and PVT in children and has a higher efficacy in restoring and maintaining sinus rhythm.