[The clinico-dopplerographic characteristics of the initial manifestations of cerebral circulatory insufficiency in patients with vertebral artery hypoplasia combined with osteochondrosis of the cervical spine].

In the examination of 44 patients with primary hypoplasia of the vertebral artery (less than 2.5 mm in diameter) associated with osteochondrosis of the cervical segment of the vertebral column there have been revealed the following neuropathological manifestations of cerebral circulation insufficiency in the vertebral-basilar basin: cephalalgia, cochlear syndrome, vestibulocerebellar syndrome, vegetovascular dystonia. Ultrasound investigation of the vertebral arteries bloodflow showed a decrease in bloodflow in the intracranial length of the hypoplastic artery and an increase in the resistance to bloodflow in the extracranial segments (V2, V3).

[The effect of vertebral artery deformation by the osteophytes of uncovertebral areas on cerebral hemodynamics].

Based on the analysis of 37 cases, an ultrasonic picture is described together with the character of a change in dopplerographic indicators in compression of the vertebral artery from osteophytes of the uncovertebral regions. In most cases (94.6%) the deformation is not accompanied by a hemodynamically significant compression (stenosing) of the artery and does not affect the indices for the intracranial bloodflow.