False Tendon‐Related Polymorphic Ventricular Tachycardia

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.

Multiple monomorphic ventricular tachycardias in a structurally normal heart: A case report

“…There have been reports of false tendon–related VT with polymorphic 7 or narrow QRS tachycardia morphology 8 . Our case exhibited multiple monomorphic VTs.…”

Evaluation of left ventricular false tendons in children with idiopathic left ventricular tachycardia

“…Betsuyaku et al. described polymorphic tachycardia thought to be related to premature ventricular contractions triggered by FT stretch . The region of a FT has also been described as a successful ablation site for eliminating focal automatic tachycardia and focal ectopic beats, including cases that display a relatively narrow tachycardia QRS on electrocardiogram …”

Electrophysiological characteristics of a left atrial anomalous muscular band in a case with paroxysmal atrial fibrillation

“…The left ventricular anomalous band or false tendon has been reported to cause specific types of ventricular arrhythmias 5, 6. However, the clinical significance of the LA anomalous band is less clear, probably owing to its rare prevalence and difficulty in finding it by echocardiography.…”