在儿科心脏移植后增加大动脉硬度
John-Anthony Coppola1, Dipankar Gupta2, Dalia Lopez-Colon1
1Congenital Heart Center, Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL, USA.
Pediatric cardiology
|August 3, 2023
概括
与健康儿童相比,儿童心脏移植接受者表现出主动脉硬度增加和主动脉延伸能力降低. 这些动脉变化可能会影响长期的移植健康和冠状动脉全移植血管病变的风险.
科学领域:
- 心血管研究研究心血管研究
- 儿童心脏病学 儿童心脏病学
- 移植医学 移植医学
背景情况:
- 动脉硬与成年人的末端器官损伤有关.
- 增加的动脉刚性和内皮功能障碍可能会导致微血管功能障碍和冠状动脉移植血管病变 (CAV).
- 关于儿科心脏移植患者的动脉硬性及其与CAV的关系的数据有限.
研究的目的:
- 在心脏移植后的儿科患者中评估大动脉硬性和延展性.
- 为了研究小儿心脏移植后大动脉生物机械性质的潜在变化.
主要方法:
- 对21岁以下的患者进行前性观察性研究.
- 胸前回声心脏学M模式测量上升 (捐赠者) 和下降 (接受者) 大动脉.
- 使用经过验证的方法计算大动脉张延能力 (AD) 和大动脉硬度指数 (ASI).
主要成果:
- 招募了39名心脏移植 (HT) 患者和47名健康对照.
- 在HT患者 (4.87) 和对照组 (10.53,p<0.001) 中,上升性大动脉延展明显较低.
- 在HT患者 (4.63) 和对照组 (2.21,p<0.001) 中,上升性大动脉硬度指数明显高于对照组 (2.21,p<0.001).
结论:
- 儿科心脏移植接受者表现出改变的上升性大动脉延展性和硬性.
- 这些发现表明,移植后的大动脉有潜在的生物力学变化.
- 需要进一步的研究来确定对冠状动脉血管病变等并发症的影响.
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