Radiofrequency Ablation of Left Atrial Reentrant Tachycardias in Rheumatic Mitral Valve Disease: A Case Series.

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Radiofrequency Ablation of Left Atrial Reentrant Tachycardias in Rheumatic Mitral Valve Disease: A Case Series.

Pacing Clin Electrophysiol. 2016 Jun 27;

Authors: Prabhu MA, Thajudeen A, Prasad B V S, Namboodiri N

Abstract
INTRODUCTION: Left atrial reentrant tachycardias are not uncommon in regions where rheumatic heart disease is prevalent. Some of these arrhythmias may be curable by radiofrequency ablation. However, there is limited data pertaining to this in existing literature.
CASE REPORT: Three patients who had rheumatic mitral valve disease with past history of surgical/catheter based intervention and having no significant residual disease had symptomatic atrial flutter despite optimal medical management. An electrophysiological study confirmed a Left Atrial (LA) focal/microreentrant mechanism in all. There was patchy scarring of the LA, and successful radiofrequency ablation of these arrhythmias could be achieved.
CONCLUSION: The focal nature of the scar in these patients may suggest that the rheumatic involvement of the atrium or the hemodynamic consequence of the valvar lesion causes non-uniform insult to the atrial tissue and limited scar. At least in some patients with limited scarring, early RFA may help in the maintenance of sinus rhythm. This article is protected by copyright. All rights reserved.

PMID: 27346449 [PubMed - as supplied by publisher]

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