Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA.
Section of Electrophysiology, Fundación Cardioinfantil, Bogotá, Colombia.
Card Electrophysiol Clin. 2024 Jun;16(2):187-193. doi: 10.1016/j.ccep.2023.10.005. Epub 2023 Nov 11.
The epicardial outflow tract can be a site of origin of idiopathic ventricular arrhythmias. These arrhythmias are most commonly perivalvular and can be targeted from within the coronary venous system or from other adjacent structures, such as the right ventricular and left ventricular outflow tracts or the coronary cusp region. The authors report a case of an epicardial idiopathic outflow tract premature ventricular contraction originating from the midseptal epicardial left ventricle. In this case, direct epicardial access was crucial to identify early local activation and achieve successful catheter ablation.
心外膜流出道可为特发性室性心律失常的起源部位。这些心律失常最常见于瓣周，并可通过冠状静脉系统或其他相邻结构（如右心室和左心室流出道或冠状窦区域）进行靶向治疗。作者报告了一例起源于心外膜间隔中部左心室的心外膜特发性流出道室性期前收缩的病例。在这种情况下，直接心外膜入路对于识别早期局部激活和实现成功的导管消融至关重要。
