Is The Case Order The Risk Factor Of The Lumbar Surgery Postoperative Wound Infection?

Objective:To investigate whether the case order is risk factors of lumbar surgery postoperative wound infection.Methods:778patients with lumbar disc herniation and lumbar spinal stenosis who had posterior surgical treatment were analysed retrospectively. Age, sex, case order, surgery time consumption, blood loss, blood transfusion, use of internal fixation, use of the cage were seen as the possible influence factors of postoperative wound infection. Screening was completed with single factor analysis and risk factors were definited with Logistic regression analysis.Results:In this study,patients with lumbar disc herniation and lumbar spinal stenosis had a4.2%incidence of infection (33/778),27superficial surgical wound infection cases and6deep wound infection cases; Case order (P=0.020、 OR=3.050、95%CI=1.196-7.780), age (P=0.019、OR=2.123、95%CI=1.133～3.979), length of surgery (P=0.03、OR=3.035、95%CI=1.089～8.457) and blood loss (P=0.024、 OR=2.059、95%CI=1.099～3.860), are the risk factors for postoperative infection; While the incision length (P=0.106、OR=1.805、95%CI=0.881～3.969) and intraoperative blood transfusion (P=0.107, OR=2.171,95%CI=0.846-5.570) surgical segment (P=0.206, OR=0.578,95%CI-0.223～1.499) have no significant effect for postoperative infection. Conclusion:Through research we found that for lumbar disc hemiation and lumbar spinal stenosis patients patient’s age, length of surgery, and blood loss were all significant risk factors for infection, in addition case order is also an important risk factors. So with reasonable arrange surgical operation would reduce the risk of wound infection.