Radiofrequency catheter ablation of multiple morphologies of ventricular tachycardia by targeting a single region of the left ventricle.

Abstract:

INTRODUCTION:As treatment options for ventricular tachycardia (VT) continue to evolve, the use of radiofrequency catheter ablation is rapidly expanding. However, in the presence of multiple morphologies of VT, achieving successful results may seem less likely. We report two patients with multiple morphologies of VT who underwent successful radiofrequency ablation by application of radiofrequency energy to a single region in the left ventricle. METHODS AND RESULTS:Two patients, each without any apparent cardiac dysfunction and a history of documented VT, were referred to our institution for further management. They underwent an electrophysiologic study and were found to have easily inducible VT, of three morphologies in one patient and two in the other. Using a transaortic approach, left ventricular mapping was performed for detecting a site with presystolic potentials, earliest ventricular activation, or both. Application of radiofrequency energy to a single area in the left ventricle resulted in the elimination of all previously inducible VT in each patient. CONCLUSION:VTs with distinctly different morphologies can occur in patients with no detectable structural heart disease. These VT circuits may share a common pathway and, therefore, may readily be amenable to therapy with radiofrequency catheter ablation.

authors

Underwood RD,Deshpande SS,Biehl M,Cowan M,Akhtar M,Jazayeri MR

doi

10.1111/j.1540-8167.1995.tb00378.x

subject

Has Abstract

pub_date

1995-11-01 00:00:00

pages

1015-22

issue

11

eissn

1045-3873

issn

1540-8167

journal_volume

6

pub_type

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