电图频率分析和同步激活表面积测绘用于消除早发性心室收缩
Michael A Hoffer-Hawlik1, Alyna Pradhan2, Elizabeth Rosinski2
1Leon H. Charney Division of Cardiology, New York University Langone Health, New York, New York, USA.
Journal of cardiovascular electrophysiology
|February 27, 2026
概括
更高的电图 (EGM) 频率和更小的同时活性表面积 (IASA) 与成功的过早心室收缩 (PVC) 切除相关. 在所有情况下,在EGM频率超过325Hz的部位进行切除都是成功的.
科学领域:
- 电子生理学 电子生理学
- 通过心脏切除术 (Cardiac Ablation) 进行心脏切除.
- 心脏病学 心脏病学
背景情况:
- 低频电图 (EGM) 或在过早心室收缩 (PVC) 地图绘制期间的广泛早期激活可能表明起源在相反的腔室或基质深处.
- 量化EGM频率和同时活性表面积 (IASA) 对于PVC映射的临床实用性仍然不清楚.
研究的目的:
- 调查EGM频率分析和IASA映射的实用性,作为PVC剥离过程中激活映射的辅助.
- 确定EGM频率和IASA是否可以预测成功的PVC剥离结果.
主要方法:
- 在接受PVC切除的25名患者中,使用多电极导管生成高密度PVC激活和IASA图.
- 在早期激活区域的EGM和每个映射室内的IASA被追溯分析.
主要成果:
- 在72%的患者中 (18/25) 取得了除成功.
- 所有EGM频率>325Hz (局部激活时间[LAT]28-54毫秒) 或QRS前LAT>40毫秒的患者都取得了成功的切除.
- 10毫秒内较小的平均IASA (<0.33厘米2) 与相反的腔室 (0.95厘米2;p=0.02) 相比,与成功的切除部位有关. 在所有IASA>1.5厘米2的病例中,在10个月内切除均未成功.
结论:
- 更高的EGM频率和更小的IASA与成功的PVC切除有关.
- 在早期激活部位的EGM频率>325Hz可以预测成功的切除.
- 需要进一步的研究,才能充分理解高频EGM在引导PVC切除中的实用性.
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