Abstract
Only 20 patients with RIND, who had been performed four vessel study, were analyzed to reveal the relationship between angiographic findings and clinical signs. The average of patients was 48.8 years lod.
The results are as follows;
1) The clinical signs were almost motor disturbance and speech disturbance. The time untill recovery is within 2 weeks, but patients with sensory disturbance had generally more time for the recovery.
2) The angiographic findings revealed almost atherosclerotic lesions at the region of interal carotid artery (ICA) as described previously. There were 3 cases (15%) without any cerebrovascular change.
3) The main factor, we thought to become RIND, was responsible for the cerebrovascular lesion. Also we found the otherwise lesion, cardiac (10%) and unclear (20%). Regard with the cerebrovascular lesion, we revealed ex-tracranial lesion in 6 cases, specially ulceration and stenosis of the carotid bifurcation. In 5 cases (25%), there were sclerotic change at the carotid siphon, and the remaining 3 cases (15%) were seen multiple cerebrovascular lesions.
4) We found RIND to tend to occur in the patient with history of TIA. These patient have atherosclerotic lesions at the carotid bifurcation and carotid siphon. Therefore atherosclerotic lesions at these region seen on angiography was though important pathologic factor for RIND.
It might be suggested that we were to deal with surgically when patients with RIND have any atherosclerotic lesions at the carotid bifurcation and carotid siphon.
