Abstract:Objective To observe and analyze the characteristics of postoperative pyrexia and the correlation with prognosis after lumbar fusion.Methods A retrospective study was conducted in the 126 patients who underwent lumbar fusion from September 2017 to September 2018 in the Department of Orthopaedics,Panyu Hospital of Chinese Medicine,including 38 males and 88 females,aged (57.64±11.16)years old.The daily highest temperature (from pre-operation day 1 to postoperation day 7),infections during the hospitalization,the type of infections,and the length of stay were collected.The postoperative pyrexia was defined as over 37.8 ℃.The changes of postoperative temperature,and characteristics of postoperative pyrexia were observed.The correlation between continuous fever (over 2 days) and infection events was analyzed,as well as the effect on the length of stay.Results A total of 35 patients (27.78%) experienced postoperative fever.The first pyrexia commonly occured on day 1 postoperatively (62.86%).The average highest temperature was found on day 1 postoperatively (37.30±0.50)℃.Among all patients,the highest fever rate occured on day 1 postoperatively (17.46%).Noninfectious factors caused pyrexia in 28 cases (80%).Continuous fever was significantly associated with postoperative infection (χ2=7.359,P<0.01),and significantly prolonged the length of stay (t=3.300,P<0.01).Conclusion Non-infectious factor is the most common reason for postoperative pyrexia after lumbar fusion.Consecutive pyrexia for at least 2 days may increase the incidence of infection,and prolong the length of stay.
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