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目的 通过中老年椎—基底动脉供血不足 (VBI)脑干听觉诱发电位 (BAEP)、经颅多普勒超声(TCD)及颈椎X线检查 ,探讨此三项检查对VBI的诊断价值。方法 对 6 3例确诊的VBI者行BAEP、TCD及颈椎X线检查。结果 6 3例中 ,BAEP异常 5 1例 (异常率 81% ) ,其中周围性损害 10例 ,中枢性损害 32例 ,混合性 9例。TCD异常者 48例 (异常率 76 % )。其中单血管流速异常 2 8例 ,多血管流速异常 2 0例 ,高流速 12例 ,低流速 36例 ,伴阻力指数 (RI)异常 2 1例。颈椎X线异常率 99%。结论 此三项检查具备安全性、无痛性、快速性、高灵敏度、可重复性 ,是VBI定性、定位诊断之理想检查手段
OBJECTIVE: To evaluate the diagnostic value of these three examinations for VBI by detecting the brainstem auditory evoked potentials (BAEP), transcranial Doppler ultrasound (TCD) and cervical X-ray in middle aged and aged patients with vertebrobasilar insufficiency (VBI). Methods Sixty-three patients with confirmed VBI underwent BAEP, TCD and cervical X-ray examination. Results Sixty-three cases had abnormal BAEP, including 51 cases of abnormal BAEP, 10 cases of peripheral injury, 32 cases of central lesion and 9 cases of mixed. 48 cases of abnormal TCD (abnormal rate 76%). Among them, 28 patients had abnormal monovascular flow rate, 20 patients had abnormal multi-vessel flow rate, 12 patients had high flow rate, 36 patients had low flow rate and 21 patients had abnormal RI. Cervical X-ray abnormality rate of 99%. Conclusion The three tests with safety, painless, rapid, high sensitivity, repeatability, is the VBI qualitative diagnosis of positioning the ideal means of inspection