Naslov
Comparison of Fondaparinux and Enoxaparin in Acute Coronary Syndromes

Autori
Yusuf, S. ; Mehta, S.R. ; Bassand, J.P. ; Budaj, A. ; Chrolavicius, S. ; Fox, K.A.A. ; Granger, C.B. ; Joyner, C. ; Peters, R.J.G. ; Wallentin, L. ; Bakula, M. et al.

Izvornik
The New England journal of medicine (0028-4793) 354 (2006), 14; 1464-1476

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
ST-segment elevation ; high-risk patients ; unfractionated heparin ; myocardial infarction ; collaborative metaanalysis ; randomized trials ; initial treatment ; american-college ; task-force ; prevention

Sažetak
The combined use of anticoagulants, antiplatelet agents, and invasive coronary procedures reduces ischemic coronary events but also increases bleeding in patients with acute coronary syndromes. We therefore assessed whether fondaparinux would preserve the anti-ischemic benefits of enoxaparin while reducing bleeding. We randomly assigned 20, 078 patients with acute coronary syndromes to receive either fondaparinux (2.5 mg daily) or enoxaparin (1 mg per kilogram of body weight twice daily) for a mean of six days and evaluated death, myocardial infarction, or refractory ischemia at nine days (the primary outcome) ; major bleeding ; and their combination. Patients were followed for up to six months. The number of patients with primary-outcome events was similar in the two groups (579 with fondaparinux [5.8 percent] vs. 573 with enoxaparin [5.7 percent] ; hazard ratio in the fondaparinux group, 1.01 ; 95 percent confidence interval, 0.90 to 1.13), satisfying the noninferiority criteria. The number of events meeting this combined outcome showed a nonsignificant trend toward a lower value in the fondaparinux group at 30 days (805 vs. 864, P=0.13) and at the end of the study (1222 vs. 1308, P=0.06). The rate of major bleeding at nine days was markedly lower with fondaparinux than with enoxaparin (217 events [2.2 percent] vs. 412 events [4.1 percent] ; hazard ratio, 0.52 ; P<0.001). The composite of the primary outcome and major bleeding at nine days favored fondaparinux (737 events [7.3 percent] vs. 905 events [9.0 percent] ; hazard ratio, 0.81 ; P<0.001). Fondaparinux was associated with a significantly reduced number of deaths at 30 days (295 vs. 352, P=0.02) and at 180 days (574 vs. 638, P=0.05). Fondaparinux is similar to enoxaparin in reducing the risk of ischemic events at nine days, but it substantially reduces major bleeding and improves long term mortality and morbidity. (ClinicalTrials.gov number, NCT00139815 [ClinicalTrials.gov] .)

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

POVEZANOST RADA