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Table 1 Anti-Xa activities in orthopedic patients with or without massive bleeding

From: Comparison of three different anti-Xa assays in major orthopedic surgery patients treated with direct oral anticoagulant

  Anti-Xa activity
A (mg/L) B (mg/L) C (IU/mL)
With MB Without MB With MB Without MB With MB Without MB
Day one 0.08 (0.03–0.14) 0.08 (0.01–0.22) 0.05(0.00–0.13) 0.08 (0.01–0.15) 0.29 (0.01–0.54) 0.32 (0.03–0.81)
Day four 0.21 (0.09–0.28) 0.20 (0.06–0.31) 0.14 (0.07–0.18) 0.13 (0.04–0.23) 0.61 (0.25–1.01) 0.69 (0.15–1.30)
Day eight 0.13 (0.05–0.25) 0.24 (0.12–0.37) 0.11 (0.02–0.20) 0.16 (0.09–0.26) 0.70 (0.13–1.28) 0.81 (0.25–1.41)
Day fifteen 0.02 (0.00–0.04) 0.03 (0.01–0.06) 0.01 (0.01–0.02) 0.02 (0.01–0.03) 0.03 (0.00–0.09) 0.08 (0.04–0.13)
  1. There were no significant differences in the anti-Xa activities according to the assay used between the patients with and without massive bleeding
  2. MB massive bleeding