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左心室自发回声对比 - 病变发生,检测和建模

Paolo Melidoro¹, Gregory Y H Lip^2,3, Natalie Montarello⁴

¹King's College London, London, United Kingdom of Great Britain and Northern Ireland.

Thrombosis and haemostasis

|September 2, 2025

概括

左心房自发回声对比 (SEC) 表明血液流动缓慢,并预测心房动 (AF) 的血栓形成. 了解ESC机制和改善非侵入性检测对于中风风险评估至关重要.

科学领域:

心脏病学
生物医学工程
血液学

背景情况:

在心房 (AF) 中常见的左心房 (LA) 血静止会增加血栓的风险,特别是在左心房附属体 (LAA).
在LA检测到的自发回声对比 (SEC) 通过食道回声心脏图 (TEE) 表示血液流动减缓,与血栓形成和中风风险相关.
由于切割率低,LA SEC的病理生理学可能涉及红细胞聚合,需要进一步阐明血小板和凝血级联的作用.

研究的目的:

探索心房动 (AF) 中左心房自发回声对比 (LA SEC) 的潜在机制.
突出 LA SEC 的预后意义,作为血栓形成和中风风险的前体.
审查用于评估LA SEC和中风风险的诊断工具和计算建模的进展.

主要方法:

对AF患者的LA SEC,TEE和相关血栓事件的现有文献的综述.
讨论新兴的非侵入性成像技术,如声心脏成像和双相CT.
探索计算建模和血液流动模拟以了解SEC的形成.

主要成果:

LA SEC是AF中血栓形成和中风风险的重要指标.
非侵入性成像模式对诊断LASEC有希望,为侵入性TEE提供了替代方案.
计算模型提供了对LA SEC形成机制的宝贵见解.

结论:

对LA SEC病理生理学的进一步研究对于了解左心房血栓形成至关重要.
改善LA SEC的诊断能力可以提高AF患者中风风险分层.
影像和建模方面的进步有助于更好地临床管理AF相关的中风风险.

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