[The correlation of auditory brainstem response and transcranial Doppler on the vertebrobasilar transient ischemic vertigo].

To investigate the correlation of brainstem response (ABR) and transcranial doppler examination (TCD) on the vertebrobasilar transient ischemic vertigo (VBTIV), 24 patients (48 ears) with VBTIV and 12 patients (24 ears) with non-VBTIV were studied. The results showed that the incidence of abnormality of ABR in VBTIV group was 58.3%, TCD 54.2%, there being no significant difference by Chi-square test; while in non-VBTIV group ABR 8.3%, TCD 45.8%. Both ABR and TCD were abnormal in VBTIV 19/48, non-VBTIV 0/24 and normal VBTIV 13/48, non-VBTIV 11/24. The ratio of there cases (normal and abnormal) as a whole was VBTIV 66.7%, non-VBTIV 45.8%. It indicates that ABR with high stimulus rates combined with TCD and clinical signs can make the diagnosis of VBTIV. The results of TCD alone can't be a considerable diagnostic basis for VBTIV.