Abstract
The present study investigated the effects of additional cilostazol administration on the 12-month risk of restenosis after femoropopliteal heparin-bonded stent graft implantation. This study was a sub-analysis of the Viabahn stent graft placement for femoropopliteal disease reQUIring endovaScular tHerapy (VANQUISH) study, which was a prospective multicenter study investigating patients who received Viabahn stent graft (W.L. Gore & Associates, Flagstaff, AZ, USA) and dual-antiplatelet therapy with aspirin and a thienopyridine. The comparison of clinical outcomes between subgroups with and without cilostazol treatment were performed using the propensity score-matching method to minimize the intergroup differences in baseline characteristics. Cilostazol-treated patients had a lower 12-month proportion of restenosis than cilostazol-free patients (8.2% vs 27.3%). The odds ratio of cilostazol for the 12-month restenosis was 0.27 [95% CI, 0.08 to 0.97] (p=0.045). Furthermore, the cumulative incidence rates of surgical reconstruction, target lesion revascularization and acute thrombotic occlusion (p values by the log-rank test) were 2.6% versus 1.8% (P=0.43), 5.3% versus 20.5% (P=0.067), and 0.0% versus 11.8% (P=0.0499), respectively. The rates of surgical reconstruction and target lesion revascularization (TLR) were not significantly different between both groups. Our study revealed the clinical impact of additional cilostazol treatment on the risk of restenosis and acute thrombotic occlusion following heparin-bonded stent graft implantation, while TLR and surgical reconstruction were not significantly different.
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