与 implantable cardioverter-defibrillator冲击器失败相关的风险因素和结果
Amole Ojo1, Scott McNitt1, Mehmet K Aktaş1
1Clinical Cardiovascular Research Center, University of Rochester Medical Center, NY.
Heart rhythm
|May 9, 2025
概括
失败的植入式心脏转换器-除器 (ICD) 冲击预测了不良结果. 年龄较小,男性性别,心力衰竭住院和先前成功的冲击是初级预防患者中ICD冲击失败的关键预测因素.
科学领域:
- 心脏病学 心脏病学
- 医疗器械 医疗器械
- 电子生理学 电子生理学
背景情况:
- 植入式心脏转换器-除器 (ICD) 对于通过终止心室动脉冲动/ (VT/VF) 来预防心脏突然死亡至关重要.
- 如果ICD冲击无法终止VT/VF,则表明患有高风险的患者群体,即使可以避免立即死亡.
- 了解预测冲击失败的因素对于优化患者管理和设备治疗至关重要.
研究的目的:
- 在接受初级预防ICD的患者中,确定未成功的适当ICD冲击的预测因子.
- 在这个患者群体中,确定与失败的适当ICD冲击相关的结果.
- 为了帮助减少左心室喷射分数的患者的风险分层.
主要方法:
- 从多中心自动除器植入试验和Ranolazine在植入心脏转换器-除器的高风险患者试验中分析了一大队列 (5512名患者).
- 利用Cox比例危险多变量回归建模来确定首次出现失败的ICD冲击的风险因素.
- 检查了基线临床特征和与设备相关的事件作为潜在的预测因素.
主要成果:
- 对VT/VF进行适当的ICD冲击的3年率为14.6%,至少一次失败的冲击率为3.1%.
- 年龄较小,男性性别和心力衰竭移植后住院是失败的ICD冲击的显著基线预测因素.
- 之前成功的ICD冲击是随后失败的冲击最强的预测因素 (HR,6.72).
结论:
- 确定了简单的临床风险因素,可以有效地分层那些有失败ICD冲击风险的患者.
- 这些发现可以为临床决策提供信息,并有可能改善高风险个体的结果.
- 进一步的研究可能会探索针对被确定为ICD冲击失败高风险患者的有针对性的干预措施.
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