临床检查与动物实验均表明,心肌梗塞后血液流变学的异常变化,是影响心肌梗塞范围、心肌损伤程度以及心泵功能的重要因素,而血液稀释则能降低全血粘度,减小血流阻力,具有疏通微循环、缩小梗塞范围和改善心肌功能的作用。我们在前一工作中发现,血液稀释能使心肌缺血时单相动作电位振幅(MAPA)与双极心外膜下电图振幅(BEGA)降低和单相动作电位时程(MAPD_(5.0))缩短的程度减轻,提示该法 Clinical examination and animal experiments have shown that abnormal changes in hemorheology after myocardial infarction is an important factor affecting the extent of myocardial infarction, myocardial injury and cardiac pump function, while hemodilution can reduce the viscosity of whole blood, reduce blood flow Resistance, with clear microcirculation, reduce infarct size and improve myocardial function. In our previous work, we found that hemodilution decreased MAPP and BEGA and MAPD_ (5.0) during myocardial ischemia, ) To reduce the extent of reduction, suggesting that the law