Key result
Radiofrequency ablation successfully treats two cases of adult-onset atrial tachycardia near the mitral annulus.
Case Report (n=2)
Radiofrequency catheter ablation is a viable treatment for adult-onset atrial tachycardia originating from unusual left atrial sites adjacent to the mitral annulus.
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Supports considering ablation for refractory cases near mitral annulus; leaves open generalizability beyond case reports.
Two cases of successful radiofrequency catheter ablation of adult-onset atrial tachycardia originating from the left atrium adjacent to the mitral annulus are presented. Endocardial catheter activation mapping performed by retrograde or atrial transseptal approach revealed presystolic activation at the successful ablation site in both patients, and fractionation during sinus rhythm and tachycardia in one. The 12-lead electrocardiographic P wave appearance was suggestive of a left atrial tachycardia origin in both cases.
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Mallavarapu et al. (1996) conducted a case report in Adult-onset atrial tachycardia originating from the left atrium adjacent to the mitral annulus (n=2). Radiofrequency catheter ablation was evaluated on Successful ablation. Radiofrequency catheter ablation was successful in two cases of adult-onset atrial tachycardia originating from the left atrium adjacent to the mitral annulus.
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