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Updated: Jun 1, 2026

Dual-Dye Optical Mapping of Hearts from RyR2R2474S Knock-In Mice of Catecholaminergic Polymorphic Ventricular Tachycardia
Published on: December 22, 2023
False tendon-related polymorphic ventricular tachycardia
Tetsuo Betsuyaku1, Harutatsu Muto, Eitaro Sugiyama
1Division of Cardiovascular Medicine, Department of Internal Medicine, Hokkaido Medical Center, Sapporo, Japan. btetsuo@hok-mc.hosp.go.jp
Abstract:
A 39-year-old woman showed nonsustained polymorphic ventricular tachycardia (PVT) during light physical activity. Cardiac multidetector row computed tomography demonstrated false tendons, one of which proved to be the focus triggering premature ventricular contraction (PVC) in electrophysiological studies. The triggered PVC arose during the diastolic period, which might have caused tension in the false tendon. Radiofrequency catheter ablation targeting the triggered PVC by pace mapping was performed and proved partially effective against PVT.
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