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在再注血之前的短期同步逆注血可以减少狗在长时间缺血后的心脏病发作的大小
Y Wakida1, R Nordlander, S Kobayashi
1Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, Calif.
Circulation
|November 1, 1993
概括
同步冠状动脉逆输注 (SRP) 在再输注前应用时,显著减少心肌梗塞大小和出血. 这种技术可以通过逐渐恢复血液流动和清除缺血副产品来减轻再注射损伤.
科学领域:
- 心血管研究研究心血管研究
- 心肌缺血和再生输液损伤的心肌缺血.
背景情况:
- 同步冠状动脉逆 (SRP) 有助于恢复血流到缺血性心肌,减少心脏病发作的大小并改善左心室功能.
- 虽然SRP提供了有限的营养血液流动,但它增强了来自缺血性心肌的有害副产品的洗.
研究的目的:
- 为了研究短时间SRP直接在再注射之前对减轻再注射后损伤的影响.
- 为了确定SRP是否可以减轻动物模型中再注射后的恶化现象.
主要方法:
- 被麻醉的狗接受了3小时的左前下垂冠状动脉封闭.
- 狗被随机分配到对照组 (立即再注血) 或SRP组 (再注血前30分钟的SRP).
- 使用各种方法评估了心脏病发作的大小,心肌出血,壁胀和无反流现象,包括三甲染色和心声回声等方法.
主要成果:
- 与对照组相比,SRP组表现出明显较小的心脏病发作大小 (24%对54%) 和心肌出血减少 (3%对24%).
- 没有回流现象仅在反注射后的对照组中观察到.
- 在SRP组中,二维回声心脏图显示,在缺血区域的末端透析壁厚度的增加较小.
结论:
- 在再注血之前服用短期的SRP有效地减少了心脏病发作的大小,心肌出血和心肌壁胀.
- SRP似乎可以减轻无回流现象,这表明在缺血症后微血管功能得到改善.
- 有益的效果可能来自于在动脉再注射之前逐渐的再注射和缺血副产品的有效洗.
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