• Knee Surg Sports Traumatol Arthrosc · May 2018

    Randomized Controlled Trial

    Two doses of low-dose perioperative dexamethasone improve the clinical outcome after total knee arthroplasty: a randomized controlled study.

    • Bin Xu, Jun Ma, Qiang Huang, Ze-Yu Huang, Shao-Yun Zhang, and Fu-Xing Pei.
    • Department of Orthopaedics, West China Hospital, Sichuan University, 37# Wainan Guoxue Road, Chengdu, 610041, People's Republic of China.
    • Knee Surg Sports Traumatol Arthrosc. 2018 May 1; 26 (5): 1549-1556.

    PurposeTo study the clinical effect and safety of two doses of low-dose perioperative dexamethasone on pain and recovery after total knee arthroplasty. Methods A total of 108 patients were included in this randomized, double-blinded, placebo-controlled study. They received two doses of 10 mg IV dexamethasone (group Dexa) or IV isotonic saline (group Placebo). The CRP, IL-6 and pain levels, postoperative nausea and vomiting (PONV) incidence, nausea severity, postoperative fatigue, range of motion, length of stay, analgesic rescue and antiemetic rescue consumption, and complications were compared. Results The CRP and IL-6 levels in group Dexa were lower than in group Placebo at 24, 48, and 72 h postoperatively (P < 0.001, P < 0.001, and P < 0.001, respectively). In group Dexa, patients had less pain at 24 h postoperatively, at rest (P < 0.001) and during walking (P < 0.001); they also had a lower PONV incidence (P = 0.002) and a lower nausea VAS score (P = 0.008). Postoperative fatigue (P < 0.001) was relieved and the analgesic and antiemetic rescue consumption was reduced. Length of stay (n.s.) and range of motion (n.s.) were similar in both groups. No early surgical wound infection or gastrointestinal haemorrhage occurred in either group. Conclusions Administering two doses of low-dose perioperative dexamethasone for patients receiving total knee arthroplasty reduces postoperative CRP and IL-6 levels, provides additional analgesic effect, and reduces the PONV incidence and postoperative fatigue, without increasing the risk of early surgical wound infection and gastrointestinal haemorrhage. So two doses of low-dose perioperative dexamethasone are effective and safe for patients receiving TKA to decrease the inflammatory response, prevent PONV, relieve postoperative pain and fatigue, and enhance recovery. Level of evidence I.

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