Ventricular Tachycardia and Ectopy

Thomas M. Munger

in Mayo Clinic Cardiology

Fourth edition

Published on behalf of © Mayo Foundation for Medical Education and Research

Published in print November 2012 | ISBN: 9780199915712
Published online May 2013 | e-ISBN: 9780199322824 | DOI:

Series: Mayo Clinic Scientific Press

Ventricular Tachycardia and Ectopy

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A relatively common arrhythmia, ventricular tachycardia (VT) is present in 1% to 2% of patients during the first year after MI. This is the largest subgroup of patients with VT who require treatment. Surgical and catheter ablative techniques—using direct current and, later, radiofrequency energy—have been used in an attempt to eradicate reentrant foci that are responsible for VT in patients who have coronary artery disease. In addition to these patients, there are subsets of patients who have VT that occurs in the absence of coronary artery disease (ie, with dilated cardiomyopathy, arrhythmogenic right ventricular dysplasia, hypertrophic cardiomyopathy, infiltrative diseases of the heart, and congenital heart disease). Additionally, VT can emerge in patients with structurally normal hearts; these patients may or may not have associated repolarization syndromes. VT is an arrhythmogenic cause of sudden death, although in patients with normal repolarization and structurally normal hearts, sudden death is rarely a complication.

Chapter.  5869 words.  Illustrated.

Subjects: Cardiovascular Medicine

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