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Comparative Study
Journal Article
Review
Systematic Review
Safety and efficacy of tirofiban as adjunctive therapy for patients with ST-elevation myocardial infarction: a comparison versus placebo and abciximab.
Tirofiban is a nonpeptide tyrosine derivative that together with eptifibatide (both small molecules) and abciximam belongs to the group of glycoprotein IIb/IIIa inhibitors. Though similar to abciximab in that it has a high affinity for the GP IIbIIIa inhibitor receptor, tirofiban dissociates from it much faster tan abciximab, what makes its action reversible in a few hours. Initially used upstream for treatment of patients with non ST-elevation acute coronary síndromes, recent evidence has shown its role as adjuntive therapy in patients with ST-elevation acute myocardial infarction treated with primary angioplasty when used at a higher dose. In this article, we performed a thorough and systematic review of randomized trials comparing tirofiban versus pacebo and tirofiban versus abciximab when used in this subset of patients. All these studies showed tirofiban to be a well tolerated and effective IIbIIIa inhibitor. When compared with placebo, tirofiban was associated with a significant reduction in mortality and myocardial infarction at one month, with a higher risk of minor bleeding in the follow-up. When compared with abciximab, tirofiban showed no difference in mortality and a tendency to higher rate of the composite of death and myocardial infarction in the short term follow-up that disappeared when only studies with high-dose tirofiban were considered. On the basis of the high-dose regimen, tirofiban may be considered useful in the management of patients with ST-elevation myocardial infarction who undergo primary angioplasty.
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