Open AccessIdentification and Radiofrequency Catheter Ablation of a Nonsustained Atrial Tachycardia at the Septal Mitral Annulus with the Use of a Noncontact Mapping System: A Case Report
Author(s) -
Narita Sumito,
Tsuchiya Takeshi,
Ushinohama Hiroya,
Ando Shinichi
Publication year - 2008
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1016/s1880-4276(08)80031-2
Subject(s) - medicine , mitral annulus , cardiology , sinus rhythm , atrial tachycardia , tachycardia , radiofrequency catheter ablation , ablation , catheter ablation , catheter , ventricular tachycardia , radiofrequency ablation , anesthesia , atrial fibrillation , surgery , blood pressure , diastole
Here we report a case of a 16‐year old female with symptomatic nonsustained atrial tachycardia (NSAT) originating from the septal mitral annulus. NSAT was induced by atrial burst pacing after an intravenous isoproterenol (ISP) injection. The array mode of the noncontact mapping system (NCM) allowed us to quickly identify the tachycardia focus at the septal mitral annulus, where the contact bipolar voltage map revealed no low voltage area (<0.5 mV). The NSAT was eliminated by a radiofrequency energy application to the identified tachycardia focus during sinus rhythm, and the patient has been free from any symptoms during 10 months of follow‐up.