目的：探讨不同轴向伸长率下兔股动、静脉的顺应性变化，以及对临床修复血管损伤时方法选择的影响。方法：以兔正常股动、静脉血管标本为研究对象，通过血管压力－轴向应变试验及检测血管轴向伸长率，获取兔正常股动、静脉顺应性变化规律。结果：顺应性不仅与压力有关，而且同轴向伸长率有关。在内压强为动脉血压时，兔股动脉血管在伸长率为１．９时比其正常生理伸长率１．５８下的横截面积减少４０％。静脉也有相似变化规律。结论：当吻合口张力为１．１９ｇ时，在动脉血压下兔股动脉和静脉游离段顺应性一致。在动脉平均血压下，股动脉血管随轴向伸长率的加大，内径逐渐减小。提示临床修复四肢不同部位动、静脉伤时，应考虑相应血管的力学特性影响。

Purpose: To investigate the compliance change of femoral arteries and veins in rabbit with different axis stretch ratio, evaluated the particular reference to the option of vascular repair. Methods: A mechanical analysis including stress-strain experiment and axis stretch ratio measurement was undertaken to evaluated the compliance change of femoral arteries and veins in rabbit with different axis stretch ratio. Results: The compliance is related to the pressure and the axis stretch ratio. In the artery pressure, the section area decreased 40% with axis stretch ratio of 1.9 than axis stretch ratio of 1.58 of femoral artery in rabbit, the same as that of vein. Conclusion: When the pressure was 1.19g on anastomoses, the compliance of femoral arteries was equal to that of veins in atrerial pressure. And the inner diameter of femoral arteries decreased with the axis stretch ratio increasing. It suggested to repair the injuried vessel according to the biomechanical effect.

国家自然科学基金（19502009）