A First-in-Human Evaluation of a Novel Mesh-Covered Stent for Treatment of Carotid Stenosis in Patients at High Risk for Endarterectomy: 30-Day Results of the SCAFFOLD Trial

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Abstract

Objectives: The primary purpose of this study was the composite of major adverse events through 30 days post-index procedure or ipsilateral stroke from 30 days to 1 year (365 days). Presented here is the composite of death, stroke, and myocardial infarction (MI) through 30 days. Background: Rates of minor stroke have been higher with carotid artery stenting (CAS) compared with carotid endarterectomy (CEA). The study hypothesized that a stent with mesh covering may improve plaque stabilization during CAS, reduce plaque protrusion, and lead to reduced stroke rates. Methods: The SCAFFOLD trial, a prospective, multicenter, single-arm clinical trial evaluating the GORE carotid stent (GCS), enrolled patients at increased risk for adverse events from CEA with severe carotid artery stenosis (defined as symptomatic ≥50% or asymptomatic ≥80%). The SCAFFOLD trial screening committee was implemented to determine adherence to the study protocol. Patients were evaluated for the primary endpoint, the composite of death, stroke, and MI through 30 days. Results: A total of 312 patients were enrolled, treated, and reviewed by the SCAFFOLD trial screening committee, of which 265 were included in the primary analysis population. The 30-day rate of death, stroke, or MI was 3.0% (95% confidence interval: 1.3% to 5.9%) and the stroke or death rate was 1.5%. The 30-day stroke rate was 1.1%. The 2 deaths in the study were not stroke related. Conclusions: Low death, stroke, or MI rates were demonstrated with GCS in patients at high risk for CEA. The 30-day stroke rate of 1.1% suggests that the carotid stent mesh covering may reduce the neurologic events associated with CAS when used in appropriately selected patients.

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Schneider, P. A., Levy, E., Bacharach, J. M., Metzger, D. C., Randall, B., Garcia, A., … Gray, W. (2018). A First-in-Human Evaluation of a Novel Mesh-Covered Stent for Treatment of Carotid Stenosis in Patients at High Risk for Endarterectomy: 30-Day Results of the SCAFFOLD Trial. JACC: Cardiovascular Interventions, 11(23), 2396–2404. https://doi.org/10.1016/j.jcin.2018.07.040

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