Objective To evaluate the effect of
vertebral artery kinking on cerebral
hemodynamics.
Methods The
patients with
vertebral artery kinking on digital subtraction angiograph (DSA) were selected from 223
patients with vertebral-
basilar artery transient ischemic attack, then the changes of
vertebral artery hemodynamics were evaluated using transcranial
color Doppler (TCD). Results There were 84
patients with
vertebral artery kinking among 223
patients with vertebral-
basilar artery transient ischemic attack.
Patients with
vertebral artery kinking were older and had more vascular
risk factors than
patients without
vertebral artery kinking. Compared with the
control group,
patients showed decreased
blood flow rate such as peak velocity (Vp) and mean velocity (Vm), increased pulsatility index (PI) and resistant index (RI) in
vertebral artery kinking group. Conclusions
Vertebral artery kinking is common abnormal
artery among
patients with vertebral-
basilar artery transient ischemic attack, it leads to
hemodynamic changes. Age and vascular
risk factors are potential causes of
vertebral artery kinking.