простациклин:一种解决体外循环的一些问题的方法. 在灰猎犬的实验
Lancet (London, England)
|May 12, 1979
概括
在心肺旁路术期间添加前环素和肝素可以保持血小板功能,并减少过器沉积. 单独的氨酸会损害血小板,增加过凝固,血显示有毒性.
科学领域:
- 心血管外科心血管外科
- 血液学 血液学 血液学
- 药理学 药理学是指药理学的学科.
背景情况:
- 心肺绕道 (CPB) 程序可以导致显著的静血系统激活和并发症.
- 氨酸是标准的抗凝剂,但其使用可能与血小板功能障碍和过器相关问题有关.
- простациклин是一种强大的血管扩张剂和血小板聚合的抑制剂,这表明在CPB电路中具有潜在的益处.
研究的目的:
- 评估前环素,肝素及其组合在心肺旁路术期间对血液静止的作用.
- 评估这些药物对血小板计数,功能,纤维素素水平和动脉过器沉积的影响.
- 来自接受CPB与不同抗凝策略的狗的血的生物相容性.
主要方法:
- 灰猎犬接受了心肺旁路试验.
- 研究了三个组:单独的肝素,单独的前环素和前环素加肝素.
- 监测了血小板计数,功能,血纤维素水平和动脉过器压力差异. 使用胎儿-小鼠心脏培养物评估等离子体毒性.
主要成果:
- 仅仅氨酸导致血小板数量和功能减少,过压力增加,过器上的血小板沉积,纤维素素水平降低.
- 肝素化狗的血对胎儿小鼠的心脏有毒.
- 普罗斯塔环素单独保留了血小板,但减少了纤维素生成. простациклин 和 肝素的组合维持了血小板数量和功能,防止了纤维素原的消耗,并最大限度地减少了过器沉积.
结论:
- 与单独的肝素相比,前环素和肝素的组合提供了对血小板功能的优越保护,并减少了心肺旁路过程中与循环相关的并发症.
- простациклин在缓解CPB对血小板和体外电路的不良影响方面发挥着关键作用.
- 这种组合策略可以通过保持静血平衡来改善心肺绕道术患者的结果.
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