Key result
An electrophysiology procedure in a patient with a repaired double-outlet left ventricle revealed a re-entry pattern between the right-ventricle to main-pulmonary-artery conduit and the tricuspid annulus.
Case Report (n=1)
This is the first case to describe a re-entry mechanism between fixed anatomical barriers in a repaired right ventricle of a double-outlet left ventricle.
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May inform VT ablation mapping in repaired double-outlet left ventricle; first case leaves generalizability open.
We report the case of ventricular tachycardia (VT) ablation procedure in a patient with history of surgically repaired double-outlet left ventricle. The electrophysiology procedure revealed a re-entry pattern between the right-ventricle to main-pulmonary-artery conduit and the tricuspid annulus. The re-entrant mechanism was most likely promoted by a fibrous remodeling of this area, related to the surgical repair. This case is the first to describe a re-entry mechanism between fixed anatomical barriers in a repaired right ventricle of a double-outlet left ventricle. A pace mapping technique was used to highlight the VT isthmus.
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Bénali et al. (2021) conducted a case report in Ventricular tachycardia in a patient with surgically repaired double-outlet left ventricle (n=1). Electrophysiology and ablation procedure was evaluated on Mechanism of ventricular tachycardia. An electrophysiology procedure in a patient with a repaired double-outlet left ventricle revealed a re-entry pattern between the right-ventricle to main-pulmonary-artery conduit and the tricuspid annulus.
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