全球功能恢复的机制,尽管持续的后地震性区域麻醉
W E Lawrence1, W L Maughan, D A Kass
1Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, Md.
Circulation
|February 1, 1992
概括
冠状动脉封闭后的再输血完全恢复了全球心脏功能,尽管持续存在区域性功能障碍. 这种恢复主要是由于被动度的改变和活动功能的部分恢复,而不是反射变化.
科学领域:
- 心血管生理学心血管生理学
- 肌肉心脏再输液损伤 肌肉心脏再输液损伤
- 心脏机械学 心脏机械学
背景情况:
- 研究冠状动脉封闭和再输后全球功能恢复的机制.
- 了解再输血后区域和全球心脏功能之间的差异.
研究的目的:
- 为了阐明背后的机制全面的全球心脏恢复,尽管在再注射后区域功能障碍.
- 分析反对左心室压力-体积和压力-厚度关系的影响.
主要方法:
- 在冠状动脉封闭的狗中同时测量压力-体积和压力-厚度关系.
- 使用声微度测量对区域壁厚的评估.
- 通过终端缩压力-体积关系 (ESPVR) 评估总体缩功能的评估.
主要成果:
- 冠状动脉封闭导致区域稀释和全球功能障碍.
- 在再注射后,区域厚度仍然受损,但全球功能完全恢复.
- 重灌通过改变被动硬化和恢复主动功能来正常化室内缩性表现.
结论:
- 重灌提供了比仅仅由区域墙壁运动预测的更大的功能益处.
- 该研究确定了改变的被动硬化和部分活跃功能回归作为恢复的关键机制.
- 这些发现挑战了对再输血后区域功能障碍的传统解释.
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