在患有狭窄QRS复合体的患者中捕获左束枝的个性化标准
Miaomiao Li1, Changqing Li1, Jialin Li1
1Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), Shenyang, China.
一个新的心电学标准,ΔV6RWPT,准确地识别了狭窄QRS复合体患者的左束枝 (LBB) 节奏 (LBBP). 这种个性化的方法提供了100%的灵敏度和特异性,改进了LBB步调验证的现有标准.
科学领域:
- 心脏病学 心脏病学
- 电力生理学 电力生理学
- 医疗器械 医疗器械
背景情况:
- 左捆枝节奏 (LBBP) 是一种生理节奏技术.
- 目前用于确认LBBP的心电图标准是不够的.
研究的目的:
- 开发一种新的,个性化的心电学标准,以准确确定LBBP.
- 为了改善患有狭窄QRS复合体的患者的LBBP识别.
主要方法:
- 招募了接受LBBP和左心室隔膜节奏 (LVSP) 的患者.
- 测量LBB传导时间 (LBBCT),LBB电位 (LBBpo) -V6RWPT,原生V6RWPT,和步调V6RWPT.
- 计算 ΔV6RWPT 作为 Paced-V6RWPT 和 Native-V6RWPT 的差异.
主要成果:
- 在LBBP (21.3 ± 4.6 ms) 期间,RWPT的ΔV6是<30 ms,在LVSP (38.5 ± 4.6 ms) 期间是>30 ms.
- 标准"ΔV6RWPT <30 ms"实现了100%的灵敏度和特异性,用于LBBP的确定.
- 在原生V6RWPT和LBBpo-V6RWPT (r = 0.796) 之间发现了强烈的线性相关性.
结论:
- ΔV6RWPT作为一个准确的,个性化的标准来确认左捆分支的捕获.
- 这种新的标准显示出高灵敏度和特异性,优于固定的Paced-V6RWPT标准.
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