关键词: 椎基底动脉; 支架置入术; 诱发电位

Abstract: Objective To evaluate whether stent could improve the recovery of subclinical symptom of patients with vertebrobasilar transient ischemia attack.Methods A series of 11 patients who underwent stenting for vertebrobasilar transient ischemia attack patients with symptomatic vertebrobasilar artery stenosis was investigated in this study. All patients were evaluated with somatosensory evoked potential, brainstem auditory evoked potential, as well as visual evoked potential both before and after stent placement. Latency and wave amplitude of evoked potentials before and after stent placement were analysed for significance.Results We found abnormal evoked potential before the stenting, especially prolonged latency of N20 and P40 in somatosensory evoked potential (SEP), of wave I, III and V in brainstem auditory evoked potential (BAEP), and of P100 in visual evoked potential (VEP). While after the procedure evoked potential showed that in BAEP the latency of I-III wave significantly decreased (P =0.046) and the amplitude of wave III increased significantly (P =0.05); In SEP the latency of N20 was shortened (P =0.012) and the intervals of N13-N20 (P =0.013) and P14-N20 (P =0.005) were both decreased; In VEP the latency of P100 was shortened significantly (P =0.022).Conclusion somatosensory evoked potential, brainstem auditory evoked potential, and visual evoked potential of patients with vertebrobasilar transient ischemia attack were improved after stenting. Stenting is may be helpful to the recovery of subclinical symptom.

Key words: Stent placement; Vertebrobasilar artery; Evoked potential