New Oral Anticoagulants in Prophylaxis of Venous Thromboembolic Disease in Major Orthopedic Surgery.

Despite widespread diffusion of pharmacological prophylaxis, deep venous thrombosis (DVT) is still a common cause of morbidity after major orthopedic surgery (total hip replacement--THR--and total knee replacement--TKR). At present, clear evidence has been provided that pharmacological primary prophylaxis with low molecular weight heparin (LMWH) is associated with a significant decrease in the incidence of venous thromboembolism. The main limitation of LMWH prophylaxis however is the need for parenteral administration with a not negligible drop-out of treatment. Newer oral anticoagulants (NAOs) dabigatran, rivaroxaban, apixiban and edoxaban may be valid alternatives in elective surgery. Several studies have demonstrated the efficacy and safety of NAOs after THR and TKR. The research for new compounds and their antidote is under continuous development Aim of this paper was to review the indications and clinical results of DVT prophylaxis with NAO in patients undergoing major orthopaedic surgery.