Similar extended VTE prophylaxis efficacy and safety between rivaroxaban and aspirin following TJA .
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Aspirin or Rivaroxaban for VTE Prophylaxis after Hip or Knee Arthroplasty
N Engl J Med. 2018 Feb 22;378(8):699-7073427 patients who had undergone either total knee or hip arthroplasty with a 5-day course of rivaroxaban 10mg postoperatively were randomized to extended thromboprophylaxis with either aspirin 81mg daily or continued rivaroxaban 10mg daily. Patients were assessed for the incidence of venous thromboembolism, major bleeding events, and clinically relevant nonmajor bleeding events over the first 90 days after surgery. Noninferiority analysis for efficacy demonstrated that extended aspirin was noninferior to extended rivaroxaban. Groups also demonstrated no significant difference in the incidence of bleeding events.
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