注射用黄芪冻干粉对心肌缺血犬血流动力学的影响

为观察注射用黄芪冻干粉(HQFDPI)对心肌缺血犬血流动力学和心肌耗氧量的影响。通过结扎犬左冠状动脉前降支造成急性心肌缺血模型,静脉给药,测定犬血流动力学参数及心肌耗氧量。结果发现:各用药组于药后5~30 min期间明显减慢心肌缺血犬心率(HR),明显降低(P0.05~0.01)舒张压(DBP)、平均动脉压(MAP)压;同时,各用药组于药后10 min~4 h期间显著降低左室舒张末压(LVEDP)(P0.05~0.01);HQFDPI各剂量组于药后10 min时还明显提高(P0.05~0.01)心肌缺血犬最大收缩速率(+dp/dtmax);各用药组于给药后10 min~4h期间显著增加心输出量(CO),其中,HQFDPI高剂量组作用十分显著(P0.01);各用药组于药后10 min~4 h期间还显著降低外周阻力(TPR)(P0.05~0.01)、显著增加冠脉流量(CBF)(P0.05~0.01);HQFDPI高剂量组于给药5~30 min显著降低心脏做功(MW)(P0.05~0.01);此外,HQFDPI高剂量组和丹参组动脉血氧含量和心肌耗氧量呈显著降低趋势(P0.05);而中、高剂量组心肌氧摄取率于药后30 min~3 h亦显著降低(P0.05~0.01)。综上,HQFDPI能明显改善犬心肌缺血指标,显著提高心肌缺血后的心功能。

Influence of Lyophilized Radix Astragali Powder Injection on Hemodynamics of Dogs with Myocardial Ischemia

In order to observe the influence of lyophilized Radix Astragali powder injection on hemodynamics and myocardial consumption of oxygen of dogs with myocardial ischemia,we establised the myocardial ischemia model by ligating the anterior descending branch of left coronary artery of 5 mongrel dogs.Then the drugs were administered intravenously,and the hemodynamic parameters and myocardial consumption of oxygen of the dogs were measured.All the Radix Astragali groups and Radix Salviae Miltiorrhizae Group(RSMG)...