经颅多普勒转颈试验对椎动脉血流的影响

目的探讨经颅多普勒（TCD）转颈试验对椎动脉血流的影响及诊断价值。方法对临床已确诊的椎动脉型颈椎病患者50例患者,进行TCD转颈试验前后椎动脉血流速及阻力指数分析,并与对照组比较。结果中立位试验组椎动脉血流低于对照组。随着转颈角度的增大,同侧椎动脉血流速、血流频谱及阻力指数与对照组相比均有显著性改变（P〈0.01）。试验组转颈试验阳性率96%,对照组0.6%。结论 TCD加转颈试验能明显提高椎动脉型颈椎动脉诊断的阳性率。

Transcranial Doppler neck rotation test on vertebral artery blood flow

Objective To investigate transcranial Doppler（TCD） neck rotation test on vertebral artery blood flow and diagnostic value.Methods The clinical diagnosis of vertebral artery had cervical spondylosis in 50 patients,conducted before and after the rotation test of TCD flow velocity and resistance index of vertebral artery blood analysis,and compared with the control group. Results At the neutral position,vertebral artery blood flow was lower in test group than the control group.With neck rotation angle increased,the ipsilateral vertebral artery blood flow,blood flow spectrum and resistance index were compared with the control group,there were significant changes in P〈0.01.In test group with neck rotation test positive rate was 96%,0.6% in the control group.Conclusion TCD with neck rotation test can improve the diagnosis positive rate of vertebral artery type of cervical artery disease.