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Idiopathic left ventricular tachycardia with left and right bundle branch block configurations.

Abstract：

INTRODUCTION:Idiopathic left ventricular tachycardia typically has a right bundle branch block configuration. The purpose of this case report is to demonstrate that idiopathic ventricular tachycardia arising in or near the left posterior fascicle also may have a left bundle branch block configuration. METHODS AND RESULTS:A 27-year-old woman underwent an electrophysiologic procedure because of recurrent, verapamil-responsive, wide QRS complex tachycardia. Two types of ventricular tachycardia (cycle lengths 330 to 340 msec) were reproducibly inducible, one with a right bundle branch block configuration and left-axis deviation that had been documented clinically, and the other with a left bundle branch block configuration and axis of zero. A Purkinje potential recorded at the junction of the left ventricular mid-septum and inferior wall preceded the ventricular complex by 40 msec in both tachycardias. A single application of radiofrequency energy at this site successfully ablated both ventricular tachycardias. CONCLUSION:The findings of this case report demonstrate that idiopathic ventricular tachycardia arising in or near the left posterior fascicle may have a left bundle branch block configuration.

journal_name

J Cardiovasc Electrophysiol

journal_title

Journal of cardiovascular electrophysiology

authors

Zivin A,Goyal R,Daoud E,Man KC,Strickberger SA,Morady F

doi

10.1111/j.1540-8167.1997.tb00810.x

subject

Has Abstract

pub_date

1997-04-01 00:00:00

pages

441-4

issue

4

eissn

1045-3873

issn

1540-8167

journal_volume

8

pub_type

杂志文章

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