Patency and flow velocity profiles in the internal carotid artery assessed by digital subtraction angiography and Doppler studies two years after endarterectomy.
A follow-up of 55 patients 2 years after a total of 60 carotid endarterectomies. Fifty-two patients who had a total of 57 endarterectomies survived the first 2 post-operative years and were re-examined using pulsed Doppler spectral analysis and intravenous digital subtraction angiography (IVDSA). One patient had died following a stroke and 2 after a cardiac infarction. The Doppler and IVDSA examinations revealed a non-symptomatic restenosis of the relevant internal carotid artery in 2 patients. There were no relevant occlusions and no symptomatic re-stenoses were detected. Spectral spreading of the Doppler signal at the site of the endarterectomy was found in 18% of the internal carotid arteries, whereas wall irregularities (diameter reduction less than 10%) were demonstrated in 25% by IVDSA. A stenosis or occlusion was found in 14 (25%) of the 57 ipsilateral external carotid arteries.
Department of Neurology, National Hospital, Oslo, Norway.
D
D
Russell
S J
SJ
Bakke
J
J
Wiberg
R
R
Nyberg-Hansen
D001783:Blood Flow Velocity; D002340:Carotid Artery Diseases / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D002533:Cerebral Angiography; D004691:Endarterectomy; D005500:Follow-Up Studies; D006801:Humans; D014463:Ultrasonography