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In-stent restenosis is a recognized complication of carotid angioplasty and stenting (CAS), and it is associated with an increased risk of stroke. Few case series have reported outcomes separately following carotid endarterectomy (CEA) and CAS for the treatment of in-stent restenosis. In this study, we perform an evaluation of redo-CAS vs CEA in a large contemporary cohort of patients who underwent prior ipsilateral CAS.

We studied all patients in the Vascular Quality Initiative (VQI) database, who underwent CEA or CAS between January 1, 2003, and April 30, 2016, after prior ipsilateral CAS. Univariate methods (χ², t-test), Kaplan-Meier, logistic, and Cox regression analyses adjusting for patient characteristics were employed to evaluate stroke, death, myocardial infarction (MI), stroke/death, and stroke/death/MI within 30 days and up to 1 year following the procedure.

There were 645 carotid …