Application of Ensite™ LiveView function for identification of scar‐related ventricular tachycardia isthmus

• DOI: 10.1111/jce.15455
• Publication Date: 2022-03-19T04:14:11Z
• Authors: Pei‐Heng Kao; Fa‐Po Chung; Yenn‐Jiang Lin; Shih‐Lin Chang; Li‐Wei Lo; Yu‐Feng Hu; Ta‐Chuan Tuan; Tze‐Fan Chao; Jo‐Nan Liao; Chin‐Yu Lin; Ting‐Yung Chang; Ling Kuo; Cheng‐I Wu; Chih‐Min Liu; Shin‐Huei Liu; Wen‐Han Cheng; Linda Lin; An Khanh‐Nu Ton; Chu‐Yu Hsu; Chheng Chhay; Shih‐Ann Chen
• Keywords: Interquartile range; Ischemic Cardiomyopathy; Reentry

Dynamic display of real-time wavefront activation pattern may facilitate the recognition reentrant circuits, particularly diastolic path ventricular tachycardia (VT).We aimed to evaluate feasibility LiveView Display for mapping critical isthmus scar-related VT.Patients with mappable VT were selected. The characteristics underlying substrates and circuits assessed using HD grid multielectrode catheter. isthmuses identified based on map, entrainment, ablation results. accuracy findings in detecting potential was assessed.We studied 18 VTs 10 patients (median age: 59.5 years, 100% male) including 6 4 ischemic nonischemic cardiomyopathy, respectively. median cycle length 426 ms (interquartile range: 386-466 ms). Among 590 regional displays, 92.0% sites by Display. identification 84%, positive negative predictive values 54.8% 97.8%, area abnormal electrograms negatively correlated (r = -.506, p .027). time interval identify a significantly shorter than that conventional maps (50.5 [29.8-120] vs. 219 [157.5-400.8] s, .015).This study demonstrated identifying modest accuracy.