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Prehospital ticagrelor in ST-segment elevation myocardial infarction

By Gilles Montalescot, Arnoud W. Van't Hof, Frédéric Lapostolle, Johanne Silvain, Jens Flensted Lassen, Leonardo Bolognese, Warren J. Cantor, Àngel R. Cequier Fillat, Mohamed Chettibi, Shaun G. Goodman, Christopher J. Hammett, Kurt Huber, Magnus Janzon, Béla Merkely, Robert F. Storey, Uwe Zeymer, Olivier Stibbe, Patrick Ecollan, Wim M.J.M. Heutz, Eva Swahn, Jean-Philippe Collet, Frank F. Willems, Caroline Baradat, Muriel Licour, Anne Tsatsaris, Eric Vicaut and C. W. (Christian W.) Hamm

Abstract

Background:The direct-acting platelet P2Y receptor antagonist ticagrelor can reduce the incidence of major adverse cardiovascular events when administered at hospital admission to patients with ST-segment elevation myocardial infarction (STEMI). Whether prehospital administration of ticagrelor can improve coronary reperfusion and the clinical outcome is unknown. Methods: We conducted an international, multicenter, randomized, double-blind study involving 1862 patients with ongoing STEMI of less than 6 hours' duration, comparing prehospital (in the ambulance) versus in-hospital (in the catheterization laboratory) treatment with ticagrelor. The coprimary end points were the proportion of patients who did not have a 70% or greater resolution of ST-segment elevation before percutaneous coronary intervention (PCI) and the proportion of patients who did not have Thrombolysis in Myocardial Infarction flow grade 3 in the infarct-related artery at initial angiography. Secondary end points included the rates of major adverse cardiovascular events and definite stent thrombosis at 30 days. Results: The median time from randomization to angiography was 48 minutes, and the median time difference between the two treatment strategies was 31 minutes. The two coprimary end points did not differ significantly between the prehospital and in-hospital groups. The absence of ST-segment elevation resolution of 70% or greater after PCI (a secondary end point) was reported for 42.5% and 47.5% of the patients, respectively. The rates of major adverse cardiovascular events did not differ significantly between the two study groups. The rates of definite stent thrombosis were lower in the prehospital group than in the in-hospital group (0% vs. 0.8% in the first 24 hours; 0.2% vs. 1.2% at 30 days). Rates of major bleeding events were low and virtually identical in the two groups, regardless of the bleeding definition use

Topics: Infart de miocardi, Malalties coronàries, Anticoagulants (Medicina), Adenosina, Myocardial infarction, Coronary diseases, Anticoagulants (Medicine), Adenosine
Publisher: Massachusetts Medical Society
OAI identifier: oai:recercat.cat:2072/285596
Provided by: RECERCAT
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