Is the Oral Chemical Prophylaxis Necessary or the Prevention of Venous Thromboembolism fter Joint Arthroplasty in a Korean Population?

초록

Purpose: Venous thromboembolism (VTE) is a serious complication that may occur after a major orthopaedic surgery. The aim of the present study was to determine the necessity of a chemical thromboprophylaxis agent (rivaroxaban [RXB]) by analysing the prevalence of VTE in Korean arthroplasty patients who received RXB for prophylaxis compared with those who did not receive RXB. Materials and Methods: A total of 2,603 patients who underwent knee or hip arthroplasty between 1996 and 2017 were prospectively evaluated. Of these, 1,608 patients underwent surgery before January 2010 and were not administered any type of prophylaxis after surgery; the remaining 995 underwent surgery after 2010 and received oral RXB once daily for 5-13 days from the day after hemlock drain removal to postoperative day 14. Results: The primary study outcome was the prevalence of VTE, pulmonary embolism or death during follow up. The overall incidence of VTE was 1.69% (n=44); of these, 12 occurred in the RXB group and 32 in the nonprophylactic group. The odds ratio of VTE in the RXB group was 0.61. However, the statistical power of the study was 0.313 due to the low incidence of VTE. Conclusion: Treatment with oral chemical prophylaxis decreased the incidence of VTE after knee or hip arthroplasty in a Korean population. Furthermore, no serious complications occurred after administering oral RXB, which, coupled with its convenience, suggests oral RXB offers an attractive alternative to other gents. However, we recommend that further studies, including a multicentre study, be conducted to achieve adequate statistical power. © 2019, The Korean Hip Society. All rights reserved.

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