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Radiofrequency ablation of posteroseptal accessory pathways associated with coronary sinus diverticula

  • Raja J. SelvarajEmail author
  • Krishna Sarin
  • Vivek Raj Singh
  • Santhosh Satheesh
  • Ajith Ananthakrishna Pillai
  • Mahesh Kumar
  • Jayaraman Balachander
Article

Abstract

Purpose

Posteroseptal accessory pathways may be associated with a coronary sinus (CS) diverticulum. Our purpose was to describe the clinical characteristics, mapping and ablation of these pathways.

Methods

This was a retrospective study of all patients who underwent ablation of posteroseptal accessory pathways in a single centre. Patients with a diverticulum of the CS or one of its tributaries were included in group I, while the other patients formed group II. Clinical presentation, ablation procedure and outcome were compared between the two groups.

Results

A total of 51 patients were included, 16 in group I and 35 in group II. There were no significant differences in age or sex distribution. Atrial fibrillation (AF) and previous unsuccessful ablation were more common in group I. A negative delta wave in lead II was the ECG finding with best sensitivity and specificity for the presence of a diverticulum. A pathway potential was common at the successful site in group I, and the interval between local ventricular electrogram and delta wave onset was shorter (19.5 ± 8 vs 33.1 ± 7.6 ms, p < 0.001). There was a trend toward lower procedural success rate and higher recurrence rate in group I, although this was not significant.

Conclusions

CS diverticula should be suspected in patients with manifest posteroseptal accessory pathways who have a previous failed ablation, documented AF or typical electrocardiographic signs. A discrete potential is frequently seen at the successful site, but the local ventricular electrogram is not as early as in other accessory pathways.

Keywords

Coronary sinus Diverticulum WPW Ablation Posteroseptal 

Notes

Compliance with ethical standards

None of the authors have any potential conflict of the interest directly or indirectly related to this study. This study involves human participants and was conducted in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was not obtained from individual participants as this was a retrospective study from case records.

Disclosures

None for any of the authors

Financial support

None

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Raja J. Selvaraj
    • 1
    Email author
  • Krishna Sarin
    • 1
  • Vivek Raj Singh
    • 1
  • Santhosh Satheesh
    • 1
  • Ajith Ananthakrishna Pillai
    • 1
  • Mahesh Kumar
    • 1
  • Jayaraman Balachander
    • 1
  1. 1.Department of CardiologyJawaharlal Institute of Postgraduate Medical Education and ResearchPuducherryIndia

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