相关实验视频
Updated: Aug 14, 2026

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2-Vessel Occlusion/Hypotension: A Rat Model of Global Brain Ischemia
Published on: June 22, 2013
在中度低体温下与逆行性脑 perfusion 长时间的循环停止. 大脑是不是缺血?
1Division of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital, Chang Gung Medical College, Taipei, Taiwan, Republic of China.
Circulation
|November 1, 1996
概括
逆行性脑输液 (RCP) 在中度低温的情况下,在持续的循环停止 (CA) 期间保护大脑. 这种技术有效地延长了安全的CA时间,这表明深度低温可能不必用于大动脉损伤的修复.
科学领域:
- 心血管外科心血管外科
- 神经外科 神经外科
- 胸部外科手术 胸部外科手术
背景情况:
- 循环停止 (CA) 对于大动脉损伤的修复至关重要,提供无血场,但冒着长时间脑缺血的风险.
- 在CA期间使用中度低温,但其在预防脑损伤方面的有效性需要进一步评估.
- 反向性脑 perfusion (RCP) 是作为一个神经保护策略在延长CA.
研究的目的:
- 为了评估逆向脑输液 (RCP) 在中度低温中长期循环停止 (CA) 期间的神经保护功效.
- 评估RCP在大动脉手术期间对大脑代谢和缺血损伤的影响.
- 为了确定深度低温是否对于大动脉手术中安全的CA至关重要.
主要方法:
- 23名患有大动脉病变的患者在中度低温 (23.3°C) 时使用CA (平均75分钟) 进行了大动脉手术.
- 通过将冷冷的,有氧化血液输入上腔静脉来实现逆行脑 perfusion.
- 脑血流,氧气提取和代谢标志物 (乳酸盐,酸盐) 在CA与RCP期间被监测.
主要成果:
- 在RCP期间皮层血流量是基线的10%,与CA前水平相比,氧气提取或代谢标志物没有显著变化.
- 肌酸激酶-BB异酶是无法检测的,这表明没有显著的脑损伤.
- 该研究实现了95.5%的存活率,没有神经缺陷,随访显示大脑功能正常.
结论:
- 逆行性脑输液有效地预防长期中度低温循环停止期间的脑缺血.
- RCP延长了循环停止的安全持续时间,可能使大动脉手术不需要深度低温.
- 这些发现支持RCP作为一个有价值的神经保护辅助在复杂的大动脉修复.
相关概念视频
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