[Carotid stenosis--is arteriography necessary in investigation and treatment].
1996
: The present study was undertaken in order to evaluate whether arteriography changed the planned treatment (carotid endarterectomy) of patients with symptomatic carotid artery disease, who had been investigated primarily by ultrasound Duplex scanning. The material was comprised of 50 consecutive patients admitted for arteriography. All patients were symptomatic and were by ultrasound examination found to have lesions of the relevant internal carotid artery (ICA). In three cases arteriography was performed because ultrasound examination was inconclusive. Of the remaining 47 cases, arteriography only changed the planned treatment in three. In one case, arteriography showed a long stenosis continuing into the intracranial part of the ICA, which was not observed by ultrasound. In two cases of minor disease ultrasound overestimated the degree of stenosis. The study concludes that carotid endarterectomy may be performed based on ultrasound duplex scanning, without prior arteriography, if the degree of stenosis is 70% or greater and if the distal end of the stenosis is clearly extracranial.
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