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血液稀释时缺血心肌收缩功能的改善效应 被引量:1

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摘要 用14只开胸狗,观察急性心肌缺血早期氏血液粘度对心脏收缩功能的改善效应,结果:(1)阻断冠脉40分时,测得心脏收缩时间间期(STI)和血液动力学各指标发生明显改变。射血前期(PEP)延长,左室射血时间(VLET)缩短、PEP/LVET比值增大,动脉收缩人压降低,舒张压高以及心输出量养活,各参数照会 有显著性差异;(2)阻断冠脉10分后,行右旋糖酐等速,等量血液衡释,基本上消除了缺血引起的STI和血液动学各指标变化,缺血40 分时,各参数与对照值相比,无显著性差异。结果提示,心肌缺血早期血液度的异常升高,可能具有加剧收缩功能损害的作用。
出处 《中华胸心血管外科杂志》 CSCD 北大核心 1989年第4期239-241,共3页 Chinese Journal of Thoracic and Cardiovascular Surgery
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