蒺藜皂苷对麻醉开胸犬血流动力学和氧代谢的影响

目的：观察蒺藜皂苷(GSTT)对麻醉开胸犬血流动力学和氧代谢的影响。方法：实验犬30只随机分为5组（每组6只）:生理盐水对照组、血塞通（阳性对照药物）组及GSTT低、中、高剂量（6.26、12.52和25.00 mg·kg^-1）组。采用静脉注射给药方式，检测血流动力学和氧代谢各项指标。结果：GSTT低、中及高剂量组犬心肌血流量高于对照组(P<0.01)，平均动脉压、冠脉阻力、总外周血管阻力低于对照组（P<0.05或P<0.01）,心肌耗氧量、心肌耗氧指数及心肌氧摄取率低于对照组（P<0.05或P<0.01）。 结论：GSTT对麻醉开胸犬心脏功能有明显的调节和改善作用。 

Influences of GSTT on hemodynamics and oxygen metabolism in anesthetic thoraco-opened dogs

Objective To observe the effet of gross saponin of tribulus terrestris(GSTT) on hemodynamics and oxygen metabolism in anesthetic thoraco-opened dogs.Methods Thirty dogs were randomly divided into negative control,positive control,and experimental groups(GSTT of 6.26,12.52,and 25.00 mg·kg~(-1))(n=6).The administration of intravenous injection was used.The effects of GSTT on the indexes of the hemodynamics and oxygen metabolism in anesthetic thoraco-opened dogs were observed.Results Compared with controls GSTT increased myocardial blood flow(CBF)(P<0.01),decreased mean arterial blood pressure(MBA),cornary resistance(CR) and total peripheral vascular resistance(TPVR)(P<0.05 or P<0.01),reduced the content and index of oxygen consumption of myocardium(P<0.01) and myocardial oxygen uptake rate(P<0.01).(Conclusion GSTT) can significantly accommodate and ameliorate the heart function of anesthetic thoraco-opened dogs.