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Double ventricular tachycardias associated with an anatomical isthmus identified by a computed tomography‐derived channel
Author(s) -
Takigawa Masateru,
Martin Ruairidh,
Kitamura Takeshi,
Cochet Hubert,
Jais Pierre,
Sacher Frederic
Publication year - 2020
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/jce.14735
Subject(s) - medicine , qrs complex , cardiology , reentry , ablation , ventricular tachycardia , catheter ablation , computed tomography , tachycardia , radiology
We describe a 47‐year‐old woman with ischemic ventricular tachycardia (VT) with repetitive implantable cardioverter‐defibrillator shocks, requiring ablation. Preprocedural computed tomography (CT) demonstrated a single anatomical channel on the inferior‐basal infarcted area between less than a 3‐mm wall‐thinning area and the mitral annulus, which suggested the circuit of two VTs observed. In addition, distribution of less than 2 mm and less than 3 mm wall‐thinning area can explain the mechanism of the variation of the QRS morphology and S‐QRS interval during entrainment. Ablation in this region resulted in no VT inducibility and the absence of any VTs for 2 years. CT wall thinning data may allow us to understand the mechanism and circuit of VT and aid VT ablation procedures.