Abstract
Object: Carotid ulceration plaque is a high risk factor for stroke and vascular events. We studied residual ulceration (RU) after carotid artery stenting (CAS). Material and methods: A total of 65 CAS procedures were performed at our institute between January 2007 and November 2010. This study included 65 successful CAS procedures in 56 patients (51 men and five women) with a mean age of 76.6 years. Results: Residual ulceration was found in nine lesions (eight patients). One of nine cases showed transient weakness of the right upper extremity six hours after CAS and confirmed HITS by TCD, apparently caused by an embolus from residual ulceration. None of the other eight patients experienced an ischemic event due to RU. Follow-up computed tomography angiograms after CAS performed in all cases revealed that RU disappeared. Discussion and conclusion: There are many reports that the possibility that RU causes post-operative embolism is low. Ischemic stroke might be expected due to RU because carotid plaque surface irregularity is considered to be one of the risk factors for microembolism through the stent mesh. We conclude that RU after the CAS improves spontaneously but is a risk factor for cerebral embolism.
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