双脉冲波多普勒超声观察电刺激腓神经对小腿血液循环的影响

Effects of stimulating peroneal nerve on the lower extremity circulation using dual pulse wave Doppler ultrasonography

目的应用双脉冲波多普勒超声同步测量腘动、静脉血流动力学变化,探讨电刺激腓神经对小腿血液循环的影响。方法选取健康志愿者20例,应用双脉冲多普勒超声测量刺激前及佩戴geko T-1装置电刺激腓神经15 min、30 min、45 min及60 min后的腘动脉和腘静脉血流峰值速度、每搏量、单位时间流量变化、阻力指数(RI)及搏动指数(PI),并与刺激前进行比较分析。结果电刺激腓神经后,腘静脉的血流峰值速度较刺激前显著增加,在电刺激30 min后达高峰,与刺激前比较差异均有统计学意义(均P<0.05);腘动脉的血流峰值速度、每搏量及单位时间流量明显减低,RI及PI显著升高,与刺激前比较差异均有统计学意义(均P<0.05)。结论电刺激腓神经可以促进小腿血液循环,增加肢体远端动脉血管阻力,促进下肢静脉回流。双脉冲波多普勒超声可同步监测腘动、静脉血流动力学变化。

Objective To observe the hemodynamic changes of the lower extremity caused by the stimulation of the peroneal nerve using dual pulse wave Doppler ultrasonography. Methods Twenty healthy volunteers were enrolled.The peak flow velocity,stroke volume,flow volume changes,RI and PI of popliteal artery and popliteal vein were measured at basic state and at the time of 15 min,30 min,45 min,60 min after geko T-1 stimulating the peroneal nerve using dual pulse wave Doppler ultrasonography. Results Compared with before stimulation,the velocity of popliteal vein increased significantly,and reached to the peak at 30 min after stimulation（P〈0 .05）. The peak flow velocity , stroke volume and flow volume of popliteal artery decreased obviously,but RI and PI increased significantly（P〈0.05）. Conclusion Regularly stimulating of the peroneal nerve can promote the lower extremity circulation,increase the arterial resistance and the venous return. Dual pulse wave Doppler ultrasonography can measure synchronously hemodynamic changes of popliteal artery and popliteal vein.