QRS Morphology Shift Following Catheter Ablation of Idiopathic Outflow Tract Ventricular Tachycardia

A 42-year-old patient without structural heart disease was referred for catheter ablation of salvos of outflow tract ventricular tachycardia (VT). Activation mapping of the clinical VT (VT1) revealed the earliest ventricular activation site at the right ventricular outflow tract (RVOT). Catheter abl...

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Detalles Bibliográficos
Autores principales: Letsas, Konstantinos P., Dragasis, Stelios, Megarisiotou, Athanasia, Mililis, Panagiotis, Bazoukis, George, Saplaouras, Athanasios, Sideris, Antonios, Efremidis, Michael
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MediaSphere Medical 2020
Materias:
Case Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7769507/
https://www.ncbi.nlm.nih.gov/pubmed/33408953
http://dx.doi.org/10.19102/icrm.2020.111202
Descripción
Sumario:A 42-year-old patient without structural heart disease was referred for catheter ablation of salvos of outflow tract ventricular tachycardia (VT). Activation mapping of the clinical VT (VT1) revealed the earliest ventricular activation site at the right ventricular outflow tract (RVOT). Catheter ablation at this site led to a slight QRS shift of the VT morphology (VT2). Activation mapping of VT2 established the site of origin at the commissure between the right (RCC) and left (LCC) coronary cusps. This case is indicative of the presence of myocardial fibers displaying preferential conduction properties from the RCC–LCC commissure to a breakout site at the RVOT.

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