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Am J Cardiol. 2013 Nov 1;112(9):1328-34. doi: 10.1016/j.amjcard.2013.06.010. Epub 2013 Jul 24.

Differential impact of cilostazol on restenosis according to implanted stent type (from a pooled analysis of three DECLARE randomized trials).

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  • 1Heart Institute, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.

Abstract

Even in the drug-eluting stent era, restenosis has remained an unresolved issue, particularly in the treatment of complex coronary lesions. In this study, patient-level data from 3 randomized trials (Drug-Eluting Stenting Followed by Cilostazol Treatment Reduces Late Restenosis in Patients With Diabetes Mellitus [DECLARE-DIABETES] and Drug-Eluting Stenting Followed by Cilostazol Treatment Reduces Late Restenosis in Patients With Long Native Coronary Lesions [DECLARE-LONG] I and II) were pooled to estimate the differential antirestenotic efficacy of add-on cilostazol according to the implanted drug-eluting stent in patients at high risk for restenosis. A total of 1,399 patients underwent sirolimus-eluting stent (SES; n = 450), paclitaxel-eluting stent (n = 450), and zotarolimus-eluting stent (n = 499) implantation and received triple-antiplatelet therapy (TAT; aspirin, clopidogrel, and cilostazol, n = 700) and dual-antiplatelet therapy (aspirin and clopidogrel, n = 699). Randomization of antiplatelet regimen was stratified by stent type. In-stent late loss after TAT was significantly lower than that after dual-antiplatelet therapy, regardless of implanted stent type. However, the incidence of in-segment restenosis after TAT was significantly lower with SES (0.5% vs 6.7%, p = 0.014) and zotarolimus-eluting stent (12.2% vs 20.0%, p = 0.028) implantation but not paclitaxel-eluting stent implantation (14.4% vs 20.0%, p = 0.244). A significant interaction was present between stent type and antiplatelet regimen for the risk for in-segment restenosis (p = 0.004). Post hoc analysis using bootstrap resampling methods showed that the relative risk reduction for in-segment restenosis after TAT was most prominent with SES implantation. In conclusion, add-on cilostazol effectively reduced restenosis in patients at high risk for restenosis, particularly in those receiving SES, suggesting the sustainable utility of add-on cilostazol therapy in newer generation drug-eluting stents with comparable efficacy with that of SES.

Copyright © 2013 Elsevier Inc. All rights reserved.

PMID:
23890573
[PubMed - indexed for MEDLINE]
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