Background:Recent studies have shown fondaparinux's superiority over enoxaparin in
patients with non-ST elevation acute coronary syndrome (ACS), especially in
relation to bleeding reduction. The description of this finding in a
Brazilian registry has not yet been documented.Objective:To compare fondaparinux versus enoxaparin in in-hospital prognosis of non-ST
elevation ACS.Methods:Multicenter retrospective observational study. A total of 2,282 patients were
included (335 in the fondaparinux group, and 1,947 in the enoxaparin group)
between May 2010 and May 2015. Demographic, medication intake and chosen
coronary treatment data were obtained. Primary outcome was mortality from
all causes. Secondary outcome was combined events (cardiogenic shock,
reinfarction, death, stroke and bleeding). Comparison between the groups
were done through Chi-Square test and T test. Multivariate analysis was done
through logistic regression, with significance values defined as p <
0.05.Results:With regards to treatment, we observed the performance of a percutaneous
coronary intervention in 40.2% in the fondaparinux group, and in 35.1% in
the enoxaparin group (p = 0.13). In the multivariate analysis, we observed
significant differences between fondaparinux and enoxaparin groups in
relation to combined events (13.8% vs. 22%. OR = 2.93, p = 0.007) and
bleeding (2.3% vs. 5.2%, OR = 4.55, p = 0.037), respectively.Conclusion:Similarly to recently published data in international literature,
fondaparinux proved superior to enoxaparin for the Brazilian population,
with significant reduction of combined events and bleeding.