双PW多普勒超声观察电刺激腓神经对小腿 血液循环的影响

摘要 目的 应用双PW多普勒超声检查技术同步测量腘动、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 健康志愿者20例（年龄20-40岁）。采用FirstKind公司geko T-1电刺激装置，应用日立公司HI VISION Ascendus图腾彩色多普勒超声诊断仪，利用双多普勒超声检查技术测量基础状态及电刺激腓神经不同时间段，腘动脉和腘静脉血流峰值速度及血流量变化。结果 电刺激腓神经后，腘静脉的峰值速度显著增加（P<0.05），每搏量及单位时间流量在电刺激15min后达到高峰；腘动脉的峰值速度及血流量则增加不明显，但阻力指数及搏动指数显著升高（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。

Dual Doppler ultrasound observe the effects of the lower extremity circulation by the stimulation of the peroneal nerve

ABSTRACT Objective To observe the hemodynamic changes caused by the stimulation of the peroneal nerve of the lower extremity by dual pulse wave Doppler ultrasonography. Methods Twenty healthy volunteers were included (age 20-40y). The geko T-1 from FirstKind Company was used to stimulate the peroneal nerve, and the HI VISION Ascendus ultrasound instrument was adopted to observe the peak flow velocity and flow volume changes after the stimulation at different time intervals. Results The velocity as well as the flow volume increased significantly in popliteal vein (P<0.05), with the latter reached to the peak 15 minutes after the stimulation. The peak flow velocity and the flow volume did not change significantly for the popliteal artery, but the resistance and the pulsatility index were significantly increased (P<0.05). Conclusion Regularly stimulating of the peroneal nerve could promote the lower extremity circulation, and increase the arterial resistance and the venous return.