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Chapter-36 Idiopathic Outflow Tract Ventricular Tachycardia

BOOK TITLE: Practical Cardiac Electrophysiology

Author
1. Liang Jackson J
2. Dixit Sanjay
ISBN
9789386056795
DOI
10.5005/jp/books/13028_37
Edition
1/e
Publishing Year
2017
Pages
16
Author Affiliations
1. University of Pennsylvania, Philadelphia, PA, USA
2. University of Pennsylvania School of Medicine; Philadelphia VA Medical Center, Philadelphia, PA, USA
Chapter keywords
Idiopathic OTVT, premature ventricular contraction, anterior interventricular vein, cyclic adenosine monophosphate, left anterior descending, left main coronary artery, left ventricular outflow tract

Abstract

This chapter describes the idiopathic outflow tract tachycardias (OTVTs). Idiopathic OTVTs comprise the largest subgroup of idiopathic VTs. The most common clinical presentation of OTVT is either isolated premature ventricular contractions (PVCs) or nonsustained repetitive monomorphic VT, and these account for 60 to 90% of cases. Pharmacologic therapies, catheter ablation, mapping of outflow tract ventricular tachycardias and radiofrequency settings, and ablation techniques are different treatment options of idiopathic outflow tract ventricular tachycardia. Medical therapy may be effective in the short-term but is not ideal for long-term management of these arrhythmias. Catheter ablation is a safe and effective treatment option and has become first line therapy in the management of OTVTs now a day. Mechanism of arrhythmia, clinical presentation of OTVT, epidemiology of OTVT, anatomy of the outflow tract region, diagnosis of electrocardiographic localization of the arrhythmogenic are also discussed in this chapter.

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