COMPARATIVE STUDY
JOURNAL ARTICLE
MULTICENTER STUDY

Carotid artery stenting for recurrent carotid artery restenosis after previous ipsilateral carotid artery endarterectomy or stenting: a report from the National Cardiovascular Data Registry

Brian G Hynes, Kevin F Kennedy, Nicholas J Ruggiero, Thomas J Kiernan, Ronan J Margey, Kenneth Rosenfield, Joseph M Garasic
JACC. Cardiovascular Interventions 2014, 7 (2): 180-186
24556097

OBJECTIVES: The purpose of this study was to evaluate and compare outcomes of patients undergoing carotid artery stenting (CAS) for ipsilateral restenosis, after either previous CAS or carotid artery endarterectomy (CEA) (CAS-R group), with those of patients who had CAS performed for de novo carotid atherosclerotic stenosis (CAS-DN group).

BACKGROUND: Therapeutic revascularization strategies to reduce stroke include CAS and CEA. Limited data exist concerning the outcomes of CAS in the setting of previous ipsilateral carotid revascularization.

METHODS: Patients enrolled in the CARE (Carotid Artery Revascularization and Endarterectomy) registry who underwent CAS were identified and separated into 2 groups: those undergoing CAS after previous ipsilateral CEA or CAS (CAS-R group, n = 1,996) and those who had CAS performed for de novo atherosclerotic carotid stenosis (CAS-DN group, n = 10,122). We analyzed the clinical and procedural factors associated with CAS-R and CAS-DN between January 1, 2005, and October 8, 2012. Propensity score matching using 19 clinical and 9 procedural characteristics was used, yielding 1,756 patients in each CAS cohort.

RESULTS: The primary endpoint composite of in-hospital death or stroke or myocardial infarction (MI) occurred less often in the CAS-R compared with CAS-DN patients (1.9% vs. 3.2%; p = 0.019). In-hospital adverse cerebrovascular events (stroke or transient ischemic attack) occurred less frequently in the CAS-R cohort (2.2% vs. 3.6%; p < 0.001). However, there was no significant difference in the composite of death, stroke, or MI at 30 days between both groups.

CONCLUSIONS: Patients who underwent CAS for restenosis after previous ipsilateral revascularization had lower periprocedural adverse event rates and comparable 30-day adverse event rates compared with CAS for de novo carotid artery stenosis.

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