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Updated: Jun 20, 2026

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
Published on: July 20, 2022
Arrhythmias originating from the right ventricular outflow tract: how to distinguish "malignant" from "benign"?
1Division of Cardiology, Department of Internal Medicine, National Cardiovascular Center, Suita, Japan. wshimizu@hsp.ncvc.go.jp
Abstract:
Idiopathic ventricular tachycardia (VT) originating from the right ventricular outflow tract (RVOT) in patients without structural heart diseases is generally considered as a benign ventricular arrhythmia (VA). However, "malignant" VA, ventricular fibrillation (VF), and/or polymorphic VT are occasionally initiated by VT or ventricular premature contraction (VPC) originating from the RVOT. In this review article, previous reports describing the malignant form of idiopathic RVOT VT are reviewed, and it is discussed how to distinguish the malignant form from the "benign" form of idiopathic VT originating from the RVOT.
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