Taipei Medical University

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Chen CC, Tai CT, Chiang CE, Yu WC, Lee SH, Chen YJ, Hsieh MH, Tsai CF, Lee KW, Ding YA, Chang MS, Chen SA.
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------>journal_name=J Cardiovasc Electrophysiol
------>paper_name=Atrial tachycardias originating from the atrial septum: electrophysiologic characteristics and radiofrequency ablation.
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------>fullAbstract=INTRODUCTION: The characteristics of atrial tachycardia (AT) have varied widely among different reports. The anatomic locations of ATs may bias the results. We propose that septal ATs and free-wall ATs have different characteristics. METHODS AND RESULTS: One hundred forty-one patients with AT underwent electropharmacologic study, endocardial mapping, and radiofrequency ablation. Forty-nine (34.7%) patients had septal AT originating from the anteroseptal, mid-septal, and posteroseptal areas. Tachycardia cycle length was similar between septal AT and free-wall AT (367 +/- 46 msec vs 366 +/- 58 msec, P > 0.05). More patients with septal AT required isoproterenol to facilitate induction (44.9% vs 31.5%, P <.0.05). Septal AT was more sensitive to adenosine than free-wall AT (84.4% vs 67.8%, P < 0.05). Only posteroseptal AT showed a positive P wave in lead V1 and negative P wave in all the inferior leads (II, III, aVF). Radiofrequency catheter ablation had a comparable success rate for septal AT and free-wall AT (96% vs 95%) without impairment of AV conduction. During follow-up of 49 +/- 13 months (range 17 to 85), the recurrence rate was similar for septal AT and free-wall AT (3.2% vs 4.6%, P = 0.08). CONCLUSION: Septal AT has electrophysiologic characteristics that are distinct from those of free-wall AT. Catheter ablation of the septal AT is safe and effective.
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------>authors=Chen CC, Tai CT, Chiang CE, Yu WC, Lee SH, Chen YJ, Hsieh MH, Tsai CF, Lee KW, Ding YA, Chang MS, Chen SA.
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------>updateTitle=Atrial tachycardias originating from the atrial septum: electrophysiologic characteristics and radiofrequency ablation.
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z