1993 Volume 52 Issue Suppl-9 Pages 46-50
In 507 patients with vertigo we examined the velocity of vertebral artery blood flow using ultrasonic blood rheography. The subjects were devided into 3 groups; laterality group, low velocity group and normal group. The differences were related to disease and aging.
In 160 patients (31.5 %) abnormal results were found, such as laterality group or low velocity group. There was no difference in prognosis between the laterality group and the normal group in Meniere's disease or hypotension. However, in VBI, laterality group showed a worse prognosis than the normal group. Moreover, in 21 patients the decrease in laterality of the vertebral artery accompanied the improvement of vertigo.
