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Korean Circ J. 2009 May;39(5):190-197. English. Original Article.
Park KH , Jeong MH , Lee MG , Ko JS , Lee SE , Kang WY , Kim SH , Sim DS , Yoon NS , Youn HJ , Hong YJ , Park HW , Kim JH , Ahn Y , Cho JG , Park JC , Kang JC .
The Heart Center of Chonnam National University Hospital, Cardiovascular Research Institute of Chonnam National University, Gwangju, Korea.

BACKGROUND AND OBJECTIVES: Triple anti-platelet therapy is known to prevent restenosis after drug-eluting stent (DES) implantation. However, there is little available data concerning the efficacy of triple anti-platelet therapy for acute myocardial infarction (AMI). SUBJECTS AND METHODS: We analyzed 528 consecutive patients with AMI undergoing DES implantation between Nov 2005 and Apr 2008. We compared clinical outcomes in the triple anti-platelet therapy (group I, n=413: cilostazol combined with aspirin and clopidogrel for at least one month) and dual antiplatelet therapy groups (group II, n=115: aspirin and clopidogrel). RESULTS: There were no significant differences in baseline characteristics. However, ST elevation myocardial infarction (STEMI) and use of TAXUS(R) stents were more common (70.9% vs. 55.7%, p=0.002; 83.5% vs. 73.0%, p=0.011) in Group I. Group I had lower incidences of cardiac death, 6-month target lesion revascularization (TLR), and major adverse cardiac and cerebrovascular events (MACCE) compared to Group II (1.7% vs. 5.7%, p=0.022; 5.7% vs. 11.5%, 0.035; 7.9% vs. 16.0%, p=0.011). On subgroup analysis, the incidence of 6-month TLR was lower among patients with American College of Cardiology/American Heart Association (ACC/AHA) B2 or C lesions and non-STEMI (6.0% vs. 14.9%, p=0.012; 4.3% vs. 19.1%, p=0.002) in Group I compared to those in Group II. The rates of bleeding complications were no different between the two groups. On multivariate analysis, Killip III or IV and triple anti-platelet therapy were independent predictors of 6-month MACCE {hazard ratio (HR)=3.382; 95% confidence interval (CI)=1.384-8.262, HR=0.436; 95% CI=0.203-0.933}. CONCLUSION:Triple anti-platelet therapy is safe and efficacious, and it prevents TLR in patients with AMI, especially those with complex lesions and non-STEMIs.

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