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Journal Article
Randomized Controlled Trial
Cilostazol reduces restenosis after endovascular therapy in patients with femoropopliteal lesions.
Journal of Vascular Surgery 2008 July
BACKGROUND: Despite the recent development of endovascular therapy (EVT), a high incidence of restenosis remains as an unsolved issue in patients presenting with femoropopliteal lesions. We investigated whether cilostazol reduces restenosis after successful EVT for de novo femoropopliteal lesions.
METHODS: This study was designed as a prospective, randomized, open-label, blinded end point study in a single institution. Between March 2004 and June 2005, we randomized 127 patients who were successfully treated with EVT for de novo femoropopliteal lesions to receive cilostazol (200 mg/d, n = 63) or ticlopidine (200 mg/d, n = 64) in addition to aspirin (100 mg/d). Antiplatelet medications were started at least 1 week before EVT and were continued until the end of follow-up. Patency was defined by duplex ultrasound imaging with peak systolic velocity ratio >2.4.
RESULTS: There were no significant differences in the patients and lesion characteristics. Sixteen patients dropped out of the study protocol, six of whom were withdrawn due to adverse drug effects (cilostazol, n = 5; ticlopidine, n = 1; P = .09). Ten patients died (cilostazol, n = 4; ticlopidine, n = 6; P = .53) during the follow-up period. Patency rates at 12, 24, and 36 months were 87%, 82%, and 73% in the cilostazol group and 65%, 60%, and 51% in ticlopidine group by intention-to-treat analysis (P = .013) and were 87%, 82%, and 73% in the cilostazol group and 64%, 57%, and 48% in the ticlopidine group (P = .0088) by as-treated analysis. Freedom from target lesion revascularization and all adverse events (restenosis, amputation, and death) was significantly higher in cilostazol group than in ticlopidine group (P = .036, P = .031). No acute, subacute, or chronic thrombotic occlusion was encountered, and bleeding complication rates were similar between the two groups.
CONCLUSIONS: Cilostazol significantly reduces restenosis after EVT in femoropopliteal lesions.
METHODS: This study was designed as a prospective, randomized, open-label, blinded end point study in a single institution. Between March 2004 and June 2005, we randomized 127 patients who were successfully treated with EVT for de novo femoropopliteal lesions to receive cilostazol (200 mg/d, n = 63) or ticlopidine (200 mg/d, n = 64) in addition to aspirin (100 mg/d). Antiplatelet medications were started at least 1 week before EVT and were continued until the end of follow-up. Patency was defined by duplex ultrasound imaging with peak systolic velocity ratio >2.4.
RESULTS: There were no significant differences in the patients and lesion characteristics. Sixteen patients dropped out of the study protocol, six of whom were withdrawn due to adverse drug effects (cilostazol, n = 5; ticlopidine, n = 1; P = .09). Ten patients died (cilostazol, n = 4; ticlopidine, n = 6; P = .53) during the follow-up period. Patency rates at 12, 24, and 36 months were 87%, 82%, and 73% in the cilostazol group and 65%, 60%, and 51% in ticlopidine group by intention-to-treat analysis (P = .013) and were 87%, 82%, and 73% in the cilostazol group and 64%, 57%, and 48% in the ticlopidine group (P = .0088) by as-treated analysis. Freedom from target lesion revascularization and all adverse events (restenosis, amputation, and death) was significantly higher in cilostazol group than in ticlopidine group (P = .036, P = .031). No acute, subacute, or chronic thrombotic occlusion was encountered, and bleeding complication rates were similar between the two groups.
CONCLUSIONS: Cilostazol significantly reduces restenosis after EVT in femoropopliteal lesions.
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