定量冠状动脉样硬化和心肌 perfusion 在糖尿病的预后影响
Matias Mäenpää1, Ruurt A Jukema2, Pepijn van Diemen2
1Turku PET Centre, Turku University Hospital and University of Turku, P.O. Box 52, 20521, Turku, Finland. matmae@utu.fi.
Cardiovascular diabetology
|December 2, 2025
概括
冠状动脉疾病 (CAD) 的风险随着糖尿病增加. 定量成像显示斑块负担预测了所有患者的结果,但由于斑块负担较高,正常输液不能保证糖尿病患者的安全.
科学领域:
- 心血管成像 - 心血管成像
- 糖尿病学 糖尿病学
- 预防性心脏病学 预防性心脏病学
背景情况:
- 冠状动脉疾病 (CAD) 在糖尿病患者中显著增加心血管事件风险.
- 冠状动脉计算机断层扫描血管学 (CTA) 允许量化斑块负担,而正子发射断层扫描 (PET) 评估心肌输液.
- 这项研究调查了糖尿病患者与非糖尿病患者怀疑患有CAD的量化斑块负担和 perfusion 的预后价值.
研究的目的:
- 评估疑似CAD患者的定量冠状动脉斑块负担和心肌输液的预后影响,比较糖尿病和非糖尿病患者.
- 为了确定定量成像标记是否可以在糖尿病患者和疑似CAD患者中完善风险分层.
- 探索糖尿病,斑块负担和 perfusion 异常之间的相互作用,以预测不良心血管结果.
主要方法:
- 一项观察性队列研究,涉及1311名症状患者,怀疑患有CAD.
- 进行了冠状动脉CTA和 [15O]H2O PET输液成像.
- 使用基于AI的分析量化冠状动脉斑块负担 (动脉动脉瘤体积百分比,PAV);异常输液是由应力心肌血流 (sMBF) 定义的. 综合终点包括7年死亡,心肌梗塞 (MI) 或不稳定的胸痛 (UAP).
主要成果:
- 在非糖尿病患者中,每年事件发生率为0.8%,输液正常,糖尿病增加 (2.3%),异常输液 (2.6%),或两者 (3.2%) (p < 0.001).
- 与非糖尿病人相比,正常输液的糖尿病患者的PAV是双倍的 (8.2%与4.1%,p < 0.001).
- 在两组中,PAV独立预测了不良结果. sMBF预测了非糖尿病人的结果,但不是糖尿病人的结果.
结论:
- 定量化冠状动脉样硬化斑块负担是糖尿病和非糖尿病患者长期心血管结果的重要预测指标.
- 在糖尿病患者中,正常的心肌输液并不能否定事件风险升高,主要是由于冠状动脉斑块负担增加.
- 详细的CAD表型化定量成像为糖尿病和临床结果之间的复杂关系提供了关键的见解.
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