Fondaparinux versus Enoxaparin in the Treatment of Obese Patients with Acute Coronary Syndrome.

Background: Fondaparinux is an effective and safe anticoagulant in the treatment of acute coronary syndromes (ACS). However, due to the low representation of obese individuals in clinical trials, the effects of applying the results of this drug to this population remain uncertain.

Objectives: To compare Fondaparinux to Enoxaparin in the treatment of obese patients with ACS.

Methods: This is a retrospective cohort study, including obese individuals (BMI ≥ 30 Kg/m2) admitted with non-ST-segment elevation myocardial infarction (NSTEMI) or unstable angina (UA) and treated with Fondaparinux or Enoxaparin between 2010 and 2020. The Fondaparinux and Enoxaparin groups were compared for their clinical and laboratory characteristics using chi-square and Mann-Whitney tests, as appropriate. The incidence of primary outcomes (death, reinfarction, stroke, major bleeding) was compared between groups. P-value < 0.05 was considered significant for all analyses.

Results: A total of 367 obese patients with NSTEMI or UA were included, of whom 258 used Fondaparinux and 109 used Enoxaparin. Mean age was 64 ± 12 years, and 52.9% were male. The prevalence of diabetes, hypertension, dyslipidemia, prior coronary artery disease, prior stroke, and implementation of invasive strategy was similar between groups. The incidence of the primary outcome was 4.7% in the Fondaparinux group and 5.5% in the Enoxaparin group (p = 0.729). There was no difference between groups when analyzing the components of the primary outcome separately.

Conclusion: In a sample of obese patients with NSTEMI or UA, there was no difference in the occurrence of the composite outcome (death, stroke, reinfarction, major bleeding) between patients who used Fondaparinux or Enoxaparin.