Direct Oral Anticoagulants Vs. Enoxaparin for Prevention of Venous Thromboembolism Following Orthopedic Surgery: A Dose-Response Meta-analysis.

Clin Transl Sci

Quantitative Solutions, LP., a Certara Company, Menlo Park, California, USA.

Published: July 2017

AI Article Synopsis

  • The study analyzed the effectiveness and safety of factor Xa inhibitors (like apixaban, edoxaban, and rivaroxaban) and a thrombin inhibitor (dabigatran) compared to different doses of enoxaparin after orthopedic surgery.
  • Statistically significant differences in venous thromboembolism (VTE) and bleeding rates were observed between the European and North American dosing regimens of enoxaparin, indicating different risk profiles.
  • Overall, the factor Xa inhibitors were generally found to be more effective with lower bleeding risks compared to dabigatran at their approved doses.

Article Abstract

We carried out a dose-response model-based meta-analysis to assess venous thromboembolism (VTE) and bleeding with factor Xa (FXa) inhibitors (apixaban, edoxaban, rivaroxaban) and a thrombin inhibitor (dabigatran) compared with European (EU) (40 mg q.d.) and North American (NA) (30 mg Q12H) dose regimens of a low molecular weight heparin (enoxaparin) following orthopedic surgery. Statistically significant differences in both VTE and bleeding outcomes were found between the NA and EU doses of enoxaparin, with odds ratios (95% confidence interval) for the NA vs. EU dose of 0.73 (0.71-0.76) and 1.20 (1.14-1.29) for total VTE and major bleeding, respectively. At approved doses, estimated odds ratios vs. both doses of enoxaparin for the three FXa inhibitors (range: 0.35-0.75 for VTE; 0.76-1.09 for bleeding) compared with those for dabigatran (range: 0.66-1.21 for VTE; 1.10-1.38 for bleeding) suggested generally greater efficacy and less bleeding for the FXa inhibitors.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5504485PMC
http://dx.doi.org/10.1111/cts.12471DOI Listing

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