心脏再同步治疗后QRS缩短和死亡率之间的关联:来自DANISH研究的结果
Casper Lund-Andersen1, Adelina Yafasova1, Dan Høfsten1
1Department of Cardiology, The Heart Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
International journal of cardiology
|January 3, 2024
概括
心脏再同步疗法 (CRT) 旨在改善心脏功能. 然而,CRT后QRS持续时间的变化与非缺血性心肌病患者的死亡率没有联系.
科学领域:
- 心脏病学 心脏病学
- 电子生理学 电子生理学
- 心脏衰竭管理的管理
背景情况:
- QRS持续时间的变化用于评估心脏再同步治疗 (CRT) 的有效性.
- 在CRT后的QRS持续时间变化和患者结果之间的关联尚未得到充分确立.
研究的目的:
- 研究接受CRT的患者的QRS持续时间变化和死亡率之间的关系.
- 分析来自丹麦研究的数据,以评估ICD在非缺血性心力衰竭患者死亡率 (丹麦) 研究中的有效性.
主要方法:
- 包括来自丹麦研究的572名患者,可获得CRT植入前后的QRS持续时间数据.
- 利用考克斯的比例危险模型来评估QRS持续时间变化 (∆QRS) 与死亡率之间的关联.
主要成果:
- 在CRT后观察到,QRS持续时间中位数减少了14毫秒.
- 原始分析显示,随着QRS缩短,死亡率有所降低,但在多变量调整后,这一趋势并不显著.
- ∆QRS与纽约心脏协会功能类的改善之间没有发现任何关联.
结论:
- 在非缺血性心肌病患者中,CRT后的QRS持续时间减少与长期死亡率无关.
- ∆QRS作为该人群中CRT后结果的预测器的临床实用性需要进一步研究.
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