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  • Title: A meta-analysis of carotid endarterectomy versus stenting in the treatment of symptomatic carotid stenosis.
    Author: Wang L, Liu XZ, Liu ZL, Lan FM, Shi WC, Liu J, Zhang JN.
    Journal: Chin Med J (Engl); 2013 Feb; 126(3):532-5. PubMed ID: 23422120.
    Abstract:
    BACKGROUND: Carotid stenosis is one of the common reasons for patients with ischemic stroke, and the two invasive options carotid endarterectomy (CEA) and carotid artery stenting (CAS) are the most popular treatments. But the relative efficacy and safety of the methods are not clear. METHODS: About 521 articles related to CAS and CEA for carotid stenosis published in 1995 - 2011 were retrieved from MEDLINE, Cochrane Library (CL), and China National Knowledge Infrastructure (CNKI) China Journal Full-Test database. Of them, eight articles were chosen. Meta-analysis was used to assess the relative risks. RESULTS: The eight studies included 3873 patients with symptomatic carotid artery stenosis, including 1941 cases in the carotid stent angioplasty group, and 1932 cases in the carotid endarterectomy group. Fixed effect model analysis showed that within 30 days of incidence of all types of strokes, surgery was significantly highly preferred in CAS patients (CAS group) than the CEA patients (CEA group), and the difference was statistically significant (relative ratio (RR) = 1.80, 95% confidence interval (CI): 1.380 - 2.401, P < 0.0001). But the incidence of death in the two groups is not showed and is not statistically significant after 30 days (RR = 1.52, 95%CI: 0.82 - 2.82, P = 0.18). The rate of cranial nerve injury in the CAS group is lower than the CEA group (RR = 0.14, 95%CI: 0.05 - 0.43, P = 0.0005). The incidence of CAS patients with myocardial infarction is lower than the CEA group after 30 days, but statistically meaningless (RR = 0.22, 95%CI: 0.05 - 1.02, P = 0.05). The stroke or death in CAS patients were higher than the CEA group after 1 year of treatment (RR = 2.58, 95%CI: 1.03 - 6.48, P = 0.04). CONCLUSIONS: Compared to CAS, carotid endarterectomy is still the preferred treatment methodology of symptomatic carotid artery stenosis. Future meta-analyses should then be performed in long-term follow-up to support this treatment recommendation.
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