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J Stroke Cerebrovasc Dis. 2010 Sep-Oct;19(5):404-9. doi: 10.1016/j.jstrokecerebrovasdis.2009.08.003.

A cost-effectiveness analysis of carotid artery stenting compared with endarterectomy.

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1
Department of Surgery, University of Rochester Medical Center, Rochester, New York, USA. kate_young@urmc.rochester.edu

Abstract

Endarterectomy and angioplasty with stenting have emerged as 2 alternative treatments for carotid artery stenosis. This study's objective was to determine the cost-effectiveness of carotid artery stenting (CAS) compared with carotid endarterectomy (CEA) in symptomatic subjects who are suitable for either intervention. A Markov analysis of these 2 revascularization procedures was conducted using direct Medicare costs (2007 US$) and characteristics of a symptomatic 70-year-old cohort over a lifetime. In the base case analysis, CAS produced 8.97 quality-adjusted life-years, compared with 9.64 quality-adjusted life-years for CEA. The incremental cost of stenting was $17,700, and thus CAS was dominated by CEA. Sensitivity analyses show that the long-term probabilities of major stroke or mortality influenced the results. In the base case analysis, CEA for patients with symptomatic stenosis has a greater benefit than CAS, with lower direct costs. With 59% probability, CEA will be the optimal intervention when all of the model assumptions are varied simultaneously.

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