Tirofiban and sirolimus-eluting stent vs abciximab and bare-metal stent for acute myocardial infarction: a randomized trial

Marco Valgimigli, Gianfranco Percoco, Patrizia Malagutti, Gianluca Campo, Fabrizio Ferrari, Dario Barbieri, Giordano Cicchitelli, Eugène P McFadden, Fabia Merlini, Lucia Ansani, Gabriele Guardigli, Alessandro Bettini, Giovanni Parrinello, Eric Boersma, Roberto Ferrari
JAMA 2005 May 4, 293 (17): 2109-17

CONTEXT: Bare-metal stenting with abciximab pretreatment is currently considered a reasonable reperfusion strategy for acute ST-segment elevation myocardial infarction (STEMI). Sirolimus-eluting stents significantly reduce the need for target-vessel revascularization (TVR) vs bare-metal stents but substantially increase procedural costs. At current European list prices, the use of tirofiban instead of abciximab would absorb the difference in cost between stenting with sirolimus-eluting vs bare-metal stents.

OBJECTIVE: To evaluate the clinical and angiographic impact of single high-dose bolus tirofiban plus sirolimus-eluting stenting vs abciximab plus bare-metal stenting in patients with STEMI.

DESIGN, SETTING, AND PATIENTS: Prospective, single-blind, randomized controlled study (Single High Dose Bolus Tirofiban and Sirolimus Eluting Stent vs Abciximab and Bare Metal Stent in Myocardial Infarction [STRATEGY]) of 175 patients (median age, 63 [interquartile range, 55-72] years) presenting to a single referral center in Italy with STEMI or presumed new left bundle-branch block and randomized between March 6, 2003, and April 23, 2004.

INTERVENTION: Single high-dose bolus tirofiban regimen plus sirolimus-eluting stenting (n = 87) vs standard-dose abciximab plus bare-metal stenting (n = 88).

MAIN OUTCOME MEASURES: The primary end point was a composite of death, nonfatal myocardial infarction, stroke, or binary restenosis at 8 months. Secondary outcomes included freedom, at day 30 and month 8, from major cardiac or cerebrovascular adverse events (composite of death, reinfarction, stroke, and repeat TVR).

RESULTS: Cumulatively, 14 of 74 patients (19%; 95% confidence interval [CI], 10%-28%) in the tirofiban plus sirolimus-eluting stent group and 37 of 74 patients (50%; 95% CI, 44%-56%) in the abciximab plus bare-metal stent group reached the primary end point (hazard ratio, 0.33; 95% CI, 0.18-0.60; P<.001 [P<.001 by Fischer exact test]). The cumulative incidence of death, reinfarction, stroke, or TVR was significantly lower in the tirofiban plus sirolimus-eluting stent group (18%) vs the abciximab plus bare-metal stent group (32%) (hazard ratio, 0.53; 95% CI, 0.28-0.92; P = .04), predominantly reflecting a reduction in the need for TVR. Binary restenosis was present in 6 of 67 (9%; 95% CI, 2%-16%) and 24 of 66 (36%; 95% CI, 26%-46%) patients in the tirofiban plus sirolimus-eluting stent and abciximab plus bare-metal stent groups, respectively (P = .002).

CONCLUSION: Tirofiban-supported sirolimus-eluting stenting of infarcted arteries holds promise for improving outcomes while limiting health care expenditure in patients with myocardial infarction undergoing primary intervention.

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