Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Clinical Investigation
Effect of Cilostazol on In-Stent Neointimal Hyperplasia After Coronary Artery Stenting
A Quantitative Coronary Angiography and Volumetric Intravascular Ultrasound Study
Pil-Ki MinJae-Hun JungYoung-Guk KoDonghoon ChoiYangsoo JangWon-Heum Shim
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JOURNAL FREE ACCESS

2007 Volume 71 Issue 11 Pages 1685-1690

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Abstract

Background This study was designed to investigate the efficacy of cilostazol on the prevention of in-stent neointimal hyperplasia as measured by both quantitative coronary angiography (CAG) and volumetric intravascular ultrasound (IVUS). Methods and Results Fifty-nine patients (39 men, age 62 years) undergoing elective coronary stenting were randomly assigned to receive aspirin plus clopidogrel or ticlopidine (Group I, n=28, 30 lesions) or aspirin plus clopidogrel or ticlopidine plus cilostazol (Group II, n=31, 35 lesions). CAG and IVUS were performed and repeated at 6 months to assess the primary endpoints of minimal luminal diameter (MLD) and in-stent neointimal hyperplasia volume. Follow-up CAG was performed on all patients and follow-up IVUS study was available for 50 lesions in 48 patients (24 lesions in Group I, 26 in Group II). There were no significant differences in the baseline angiographic data between the 2 groups. At 6 months follow-up, in-stent MLD was 1.90±0.76 mm in Group I and 2.41±0.85 mm in Group II (p=0.006). Volumetric IVUS at 6 months demonstrated that in-stent intimal hyperplasia volume per stent length was 2.2±1.4 mm3/mm in Group I and 1.0±0.5 mm3/mm in Group II (p=0.001). Conclusions Triple antiplatelet therapy including cilostazol seems to be more effective at preventing in-stent neointimal hyperplasia than a dual antiplatelet regimen. (Circ J 2007; 71: 1685 - 1690)

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© 2007 THE JAPANESE CIRCULATION SOCIETY
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