Circulation:冠脉非阻塞性心肌梗死(MINOCA)的潜在发病原因

2021-02-16 Nebula MedSci原创

冠状动脉非阻塞性心肌梗死(MINOCA)占心肌梗死(MIs)的6%-15%,更常见于女性。

冠状动脉非阻塞性心肌梗死(MINOCA)占心肌梗死(MIs)的6%-15%,更常见于女性。科学声明建议对MINOCA进行多模态成像以确定潜在的原因。本研究采用了冠状动脉光学相干断层扫描(OCT)和心脏磁共振(CMR)成像来评估MINOCA的机制。

这是一项回顾性、多中心、国际性的观察性研究,招募了临床确诊的心肌梗死女性患者。如果侵入性冠状动脉造影显示所有大动脉狭窄<50%,则进行多血管OCT,然后再进行CMR(电影成像、晚期钆增强、T2加权成像和T1映射)。

共招募了301位患者,170位被确诊为MINOCA,其中145位有可分析的合适的OCT成像质量;其中116位进行了CMR。

OCT检查

OCT检查明确了46.2%(67/145)的患者的明确或可能病变,最常见的是斑块破裂、斑块内空腔或层状斑块。74.1%(86/116)的患者的CMR检查结果异常。接受CMR检查的受试者中有53.4%(62/116)的存在CMR异常的缺血性模式(梗死或冠状动脉区域的心肌水肿)。

CMR检查

20.7%(24/116)的患者存在非缺血性CMR异常(心肌炎、心碎综合征或非缺血性心肌病)。

在接受多种影像学检查的受试者中,84.5%(98/116)的确定了MINOCA的病因,高于单用OCT或CMR (P<0.001)。63.8%(74/116)的MINOCA患者为缺血性原因,非缺血性原因见于20.7%(24/116)的女性,另外15.5%(18/116)的患者的原因未明。

多影像学检查(包括冠脉OCT和CMR)可明确高达84.5%的MINOCA女性患者的潜在发病机制,其中75.5%的为缺血性原因,24.5%的为非缺血性原因。明确MINOCA的发病原因有助于指导制定二级药物预防策略。

原始出处:

Harmony R. Reynolds, et al. Coronary Optical Coherence Tomography and Cardiac Magnetic Resonance Imaging to Determine Underlying Causes of Myocardial Infarction With Nonobstructive Coronary Arteries in Women. Circulation. 2021;143:624–640

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    2021-07-14 tomyang96
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    2021-12-17 huagfeg
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    2021-09-10 smlt2008

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