The treatment and follow-up studies of arrhythmia after transcatheter closure of membranous ventricular septal defects

  • Miss Lifeng Zhang, Cardiovascular center, Children’s Hospital of Fudan University, China
  • Miss Lin Wu, Cardiovascular center, Children’s Hospital of Fudan University, China
  • Miss Fang Liu, Cardiovascular center, Children’s Hospital of Fudan University, China
  • Miss Ying Lu, Cardiovascular center, Children’s Hospital of Fudan University, China
  • Dr Feng Sheng, Cardiovascular center, Children’s Hospital of Fudan University, China

    • Objective: To summarize the revalence, causes, prevention and treatment of arrhythmia after transcatheter closure of ventricular septal defects, and assess the clinical results.
    Methods: Fifty two cases accepting successful transcatheter closure were analyzed. 12 leads ECG and 24-hour record of Holter were taken before and 1-4 days after transcatheter closure. The results were automatically analyzed by computer and then reviewed by professional electrocardiogram technician.
    Results: 17. 5 percent of patients had different kinds of arrhythmia before transcatheter closure. Except bundle branch block other kinds of arrhythmia were resolved in all the patients prior to discharge. The arrhythmia was significantly increased post closure. The arrhythmias occurring in the patients who underwent transcatheter closure of VSD included complete right bundle branch block (CRBBB, 3.5%), incomplete right bundle branch block (IRBBB, 12%), left anterior fascicular block (LAFB, 3.8%).2 patient developed transient complete atrio-ventricular block after closure, and returned to normal sinus rhythm in two days.
    Conclusion: The transcatheter closure of VSD is a safe and feasible method in pediatric patients. Conduction blockades are the common complications after transcatheter closure of VSD, incomplete right bundle branch block (IRBBB) caused by interventional therapy is benign, the majority of which may resolve itself 6 - 12 months after the procedure.