QRS复合和T波平面性用于预测自动植入式除器的疗效
Katerina Hnatkova1, Irena Andršová2,3, Tomáš Novotný2,3
1National Heart and Lung Institute, Imperial College London, London, UK.
Heart (British Cardiac Society)
|September 15, 2023
概括
电脑心电图向量循环非平面性预测了植入式心脏转换器-除器 (ICD) 接受者的结果. QRS非平面性表明死亡风险更高,而T波非平面性预测了适当的ICD冲击.
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
- 医疗成像医学成像
背景情况:
- 植入式心脏转换器-除器 (ICD) 对于预防心脏突发死亡至关重要.
- 预测哪些患者将从ICD中受益最多,并确定那些死亡风险较高的患者仍然是一个挑战.
研究的目的:
- 评估一种假设,即心电图 (ECG) 矢量循环的非平面性可以预测初级预防性ICD接受者的死亡率和适当的ICD冲击.
- 将ECG循环非平面性的预测值与已确定的风险因素进行比较.
主要方法:
- 分析了1948年接受预防性ICD患者的数字植入前心电图.
- 构建了三维QRS和T波向量循环,并使用单数值分解量化了它们的非平面性 (扭曲).
- 使用多变量考克斯回归来评估非平面性与5年全因死亡率和适当的ICD冲击的关联,并根据临床因素进行调整.
主要成果:
- 尽管获得了ICD保护,但QRS非平面性与增加全因死亡率 (HR 1.339) 有显著的关联.
- T波环非平面性与适当的ICD冲击 (HR 1.364) 有显著的相关性,但与死亡率无关.
- 非平面性测量提供了超越传统ECG参数的预测价值.
结论:
- 电脑心电图向量循环非平面性,特别是死亡率的QRS非平面性和冲击的T波非平面性,可能有助于在ICD接受者中分层风险.
- 这些发现表明,心电图循环几何学可以提供一种新的,非侵入性的方法来个性化ICD治疗并改善患者的治疗结果.
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