Long term prognosis of asymptomatic carotid artery occlusion
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Updated: Oct 26, 2026

Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia
Published on: May 9, 2013
F Nonino1, R D'Alessandro, P Pazzaglia
1Neurology Unit, Malpighi Hospital, Bologna, Italy.
Abstract:
Twenty six asymptomatic patients with internal carotid artery occlusion had ultrasound follow-up for a mean period of 34.3 months. During follow-up 3 patients (11.5%) reported transitory ischemic attacks (TIAs), one of these (3.8%) occurred in the vascular territory ipsilateral to the occlusion. There were not strokes. Annual TIA rate was 4% for all vascular territories, and 1.3% for the territory ipsilateral to the occlusion. Annual mortality was 9.4%. Our data on stroke risk in patients with asymptomatic carotid artery occlusion show a good prognosis in the long-term.
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