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功能评估长期的微血管心脏合体移植血管病变
Noemi Bora1,2, Orsolya Balogh1, Tamás Ferenci3
1Gottsegen National Cardiovascular Center, 1096 Budapest, Hungary.
Journal of personalized medicine
|December 23, 2023
概括
心脏全移植血管病变 (CAV) 是心脏移植 (HTX) 后的一个主要问题. 新的功能性评估表明微血管功能障碍,而不是心表疾病,可能是早期CAV的信号.
科学领域:
- 心脏病学 心脏病学
- 移植医学 移植医学
- 血管生物学 血管生物学
背景情况:
- 心脏全移植血管病变 (CAV) 是死亡和心脏移植 (HTX) 后再移植的主要原因.
- 目前,每年进行的监测血管造影对早期CAV检测的敏感性有限.
研究的目的:
- 通过先进的血液动力学测量,评估HTX患者冠状动脉血管的功能状态.
- 为了确定微循环阻力和冠状动脉流量储备是否能够检测到CAV的早期迹象.
主要方法:
- 测量了基于玻尿酸热稀释的冠状动脉流量储量 (CFR),微循环阻力指数 (IMR) 和分数流量储量 (FFR).
- 在常规监测血管造影期间,在没有公开的CAV的情况下,对HTX患者进行了测量.
主要成果:
- CFR每年显著下降 (0.13/年),而IMR倾向于增加 (0.98/年).
- FFR保持稳定,高于0.80,表明没有显著的上心狭窄.
- 移植后,CFR下降,IMR增加,表明微血管状况恶化.
结论:
- 移植心脏中的心上冠状动脉没有表现出功能恶化.
- 微血管功能的恶化,通过降低CFR和增加IMR来表明,是一个关键的发现.
- CFR和IMR测量显示,对CAV的早期诊断有前途.
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