-Review-

Idiopathic Ventricular Premature Contraction and Ventricular Tachycardia: Distribution of the Origin, Diagnostic Algorithm, and Catheter Ablation

Yoshinori Kobayashi

From the Department of Internal Medicine, Division of Cardiology, Tokai University Hachioji-hospital, Tokyo, Japan

Idiopathic ventricular premature contractions (VPCs), defined as VPCs in the absence of obvious structural heart disease, are one of the common types of arrhythmia in clinical practice. They are sometimes complicated with non-sustained ventricular tachycardia (VT), and/or sustained VT with almost same QRS morphology in 12 leads ECG. Idiopathic VT (IVT) commonly occurs by focal mechanisms and the origins are distributed in a variety of sites in both ventricles.
In this article, the clinical characteristics of IVT/IVPCs, the diagnostic algorithm, and how to ablate them will be reviewed.

J Nippon Med Sch 2018; 85: 87-94

Keywords
idiopathic ventricular tachycardia, idiopathic ventricular premature contractions, classification, origin, mechanism

Correspondence to
Yoshinori Kobayashi, MD, From the Department of Internal Medicine, Division of Cardiology, Tokai University Hachioji-hospital, 1838 Ishikawa-machi, Hachioji-shi, Tokyo 192-0032, Japan
yoshikoba@tokai-u.jp

Received, November 20, 2017
Accepted, February 22, 2018