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[Clinical features of five patients with delayed third degree atrioventricular block after ethanol septal ablation

Rong Liu1, Shu-bin Qiao, Feng-huan Hu

  • 1Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.

Zhonghua Xin Xue Guan Bing Za Zhi
|February 1, 2013
PubMed

Insights

Delayed third degree atrioventricular block after ethanol septal ablation is rare, occurring in 2.1% of patients. Monitoring and temporary pacemakers are recommended post-ablation to prevent syncope.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Electrophysiology

Context:

  • Hypertrophic obstructive cardiomyopathy (HOCM) management.
  • Ethanol septal ablation as a treatment for HOCM.
  • Atrioventricular block as a potential complication.

Purpose:

  • To analyze clinical features of delayed third degree atrioventricular block post-ethanol septal ablation for HOCM.
  • To determine the incidence and characteristics of this complication.

Summary:

  • A retrospective analysis of 235 HOCM patients undergoing ethanol septal ablation identified 5 cases (2.1%) of delayed third degree atrioventricular block.
  • This complication occurred 32 hours post-ablation, with patients experiencing syncope and requiring temporary pacemakers.
  • All patients recovered to normal sinus rhythm without permanent pacemaker implantation.

Impact:

  • Highlights the rare but significant risk of delayed atrioventricular block after ethanol septal ablation.
  • Emphasizes the need for prolonged ECG monitoring and prophylactic temporary pacemaker use.
  • Informs clinical practice for managing HOCM patients undergoing septal ablation.
Abstract

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