冠状动脉微循环功能障碍和心脏移植后的急性细胞排斥
Joo Myung Lee1, Ki Hong Choi1, Jin-Oh Choi1
1Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute (J.M.L., K.H.C., J.-O.C., Y.P., J.K., S.H.L., D.K., J.H.Y., M.P., T.K.P., Y.B.S., J.-Y.H., S.-H.C., H.-C.G., J.K.O., E.-S.J.), Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Circulation
|September 3, 2021
概括
心脏移植后早期测量的微循环阻力指数 (IMR) 可以预测急性细胞排斥. 早期IMR评估可以识别高风险患者,有助于移植后的治疗.
科学领域:
- 心脏病学
- 移植医学
- 心血管生理学
背景情况:
- 急性细胞排斥是心脏移植患者死亡和再移植的重要原因.
- 冠状动脉微循环功能障碍与移植的不良结果有关.
研究的目的:
- 评估微循环阻力指数 (IMR) 的预后值,以预测心脏移植后的急性细胞排斥.
- 评估IMR超出已确定的临床因素的增量预后值.
主要方法:
- 在心脏移植后1个月内招募154名心脏移植患者.
- 侵袭性冠状动脉生理评估,包括在最大高血压下计算IMR.
- 多变量考克斯回归和重新分类指标 (C指数,NRI,IDI) 来分析2年内IMR与活检证明的急性细胞排斥 (等级≥2R) 之间的关联.
主要成果:
- 一个月后,急性细胞排斥患者的IMR值显著增加 (23. 1±8. 6对比16. 8±11. 1, P=0. 002).
- IMR与急性细胞排斥风险显著相关 (每增加5U的aHR为1. 18;P=0. 011).
- 确诊的IMR切线≥15个患者的风险明显较高 (34. 4%对3. 8%;aHR:15. 3;P< 0. 001),风险预测模型得到改善.
结论:
- 冠状动脉微循环功能障碍,通过IMR进行早期移植后评估,与急性细胞排斥的风险密切相关.
- IMR作为急性细胞排斥早期风险分层的有价值的临床工具,补充了监测内肌细胞活检.
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