Korean Circ J.  1999 Oct;29(10):1089-1096. 10.4070/kcj.1999.29.10.1089.

Radiofrequency Catheter Ablation of Anteroseptal Accessory Pathways from Right Atrium

Abstract

BACKGROUND AND OBJECTIVES: Radiofrequency catheter ablation (RFCA) of accessory pathways (AP) has recently become the choice of therapeutic regimen for the patients with atrioventricular (AV) reentrant tachycardia. Among AP, anteroseptal AP is subject to the potential complication of inadvertent AV block during RFCA because of the close proximity to the AV node-His bundle conduction system. This study was conducted to evaluate the efficacy and safety of RFCA of anteroseptal AP at the atrial site by ablation catheter introduced through left subclavian vein.
MATERIALS AND METHODS
Seven patients with orthodromic AV reentrant tachycardia mediated by a retrogradely conducting anteroseptal AP were studied. Antidromic AV reentrant tachycardia was also induced in one patient during electrophysiologic study. Mean age was 24+/-10 years (range, 16-42 years) and the male to female ratio was 5:2. APs were manifested in 4 patients and concealed in 3 patients. After diagnosis of anteroseptal AP by electrophysiologic study, temperature guided radiofrequency current was applied in the anteroseptal area at the atrial site of tricuspid annulus by a steerable ablation catheter.
RESULTS
All pathways were successfuly ablated. The AV node or His bundle conductions was not impaired in any patients. There were no complications related to the procedure.
CONCLUSION
RFCA of the anteroseptal AP at the atrial site by a ablation catheter introduced through superior vena cava is effective and safe with good preservation of the normal conduction system.

Keyword

Radiofrequency catheter ablation; Anteroseptal AP

MeSH Terms

Atrioventricular Block
Atrioventricular Node
Bundle of His
Catheter Ablation*
Catheters
Diagnosis
Female
Heart Atria*
Humans
Male
Subclavian Vein
Tachycardia
Vena Cava, Superior
Full Text Links
  • KCJ
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2024 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr