发展心房动诱导心肌病的患者的特征
Nikhil Ahluwalia1,2, Shohreh Honarbakhsh1,2, Hakam Abbass1
1St Bartholomew's Hospital, London, UK.
Open heart
|November 28, 2024
概括
在心房动 (AF) 诱导的心肌病 (AIC) 患者经常有持续的心脏功能障碍,即使在正常的左心室喷射率 (LVEF) 后,在鼻节律中. 这些发现表明有一个微妙的潜在心肌病过程.
科学领域:
- 心脏病学 心脏病学
- 心脏电生理学 心脏电生理学
- 心脏衰竭研究研究
背景情况:
- 心房 (AF) 诱导的心肌病 (AIC) 定义为左心室喷射率 (LVEF) 的减少,在节律恢复后恢复正常.
- 对于AIC的潜在机制和诱导因素的理解尚不完全.
- 在切除后确定持续的心肌病特征可以阐明疾病的进展.
研究的目的:
- 通过在AIC患者成功导管切除 (CA) 后的详细测量来评估心脏功能.
- 在AIC患者中,即使在LVEF正常化后也会持续存在的微妙心肌病特征.
- 评估特定生物标志物和功能测试在检测这些持续异常时的有用性.
主要方法:
- 对持久性AF和LVEF<50%接受CA的患者的前性评估.
- 使用心声回声学,心肺运动测试,以及在基线和CA后6个月的NT-proBNP水平.
- 评估左心室纵向应变,左心室储应变 (LARS) 和AIC患者的功能能力标志物.
主要成果:
- 82.9%的参与者在CA后恢复了LVEF,符合AIC标准.
- 升高的NT-proBNP和持续的心力衰竭症状是常见的.
- 观察到受损的LV纵向菌株 (58.8%) 和LARS (26.5%),具有显著的重叠.
- 50%的AIC患者没有传统的心血管风险因素.
结论:
- 患有AIC的患者在鼻节律中表现出持续的结构性,代谢性和心力衰竭生物标志物异常.
- 这些发现表明,一个先前存在的,微妙的心肌病过程,使个人倾向于与AF相关的左心室功能障碍.
- 需要进一步的研究,以了解这些持续异常的病因和影响.
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