在心脏再同步治疗候选人中,机械失同和充填压力之间的机械相互作用
Ahmed S Beela1,2, Claudia A Manetti1, Frits W Prinzen3
1Department of Biomedical Engineering, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC+), 6200 MD Maastricht, the Netherlands.
European heart journal. Cardiovascular Imaging
|November 8, 2024
概括
在接受心脏再同步治疗 (CRT) 的心力衰竭患者中,机械失同表示正常的填充压力,并预测更好的结果. 这一发现将异步,填充压力和CRT成功联系在一起.
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
- 计算生物学 计算生物学
背景情况:
- 左心室 (LV) 机械失调和充填压在接受心脏再同步治疗 (CRT) 的心力衰竭患者的预后.
- 这些因素在CRT候选体中的机制联系和综合预后价值需要进一步调查.
研究的目的:
- 探索LV机械失调和填充压力之间的关系.
- 评估它们在被考虑接受CRT的患者的综合预后意义.
- 通过计算建模阐明底层机制.
主要方法:
- 追溯分析了219名CRT患者的回声心脏图数据,以评估LV机械失调和估计左心房压力 (LAP).
- 将患者分为高LAP (eLAP),正常LAP (nLAP) 或不确定的LAP组.
- 使用CircAdapt计算机模型在虚拟心脏中模拟心脏力学和血液动力学,使用左捆分支块 (LBBB).
- 评估CRT反应和长期所有原因的死亡率.
主要成果:
- 49%的患者有eLAP,40%的患者有nLAP.
- 与eLAP患者相比,患有nLAP的患者表现出更显著的机械失调.
- 在CRT前对异步和LAP的综合评估与反向LV重塑和CRT后生存率的改善有显著的相关性.
- 模拟表明,增加LV操作室刚度减弱了机械失调,将其与填充压力联系起来.
结论:
- 在LBBB患者中,机械异步表明LV遵守正常,填充压力低.
- 这种组合与CRT后的积极结果密切相关.
- 临床和计算发现强调了机械失调,填充压力和CRT疗效之间的相互作用.
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