The Analysis Of Influencing Factors For Postoperative Surgical Site Infection In Orthopedic Patients In A Hospital At Siping City

Objective:The present study was undertaken to analyze the influencing factors of orthopedic patients’postoperative surgical site infection(SSI)by comparing the differences of general condition and operation relative condition between orthopedic patients with postoperative SSI and orthopedic patients without postoperative SSI.It can provide data support for reducing or preventing postoperative orthopedic infections.Methods:Case-control study was used.A total of 85 orthopedic patients with postoperative SSI were selected into the case group in a hospital in Siping City,Jilin Province from March 2014 to March 2016.A total of 340 orthopedic patients without postoperative SSI were randomly selected into the control group at the same hospital in the same period.A retrospective survey of medical records such as general conditions,surgical conditions,and hospitalizations of patients in the case and control groups was conducted by trained investigators.Data were analyzed with SAS 9.2 software.Theχ~2test or Fisher exact probability method was used for univariate analysis,and multivariate logistic regression analysis were used foe multivariate analysis.The test level wasα=0.05.Results:1.A Total of 2,734 patients were undergone orthopedic surgery in a hospital at Siping from March 2014 to March 2016.In 2,734 patients,85 patients were infected.The infection rate was 3.11%.2.Age,BMI,surgical site,type of incision,duration of surgery,application of antibiotics before surgery,presence of implants,and hospitalization days were significantly different between the case group and the control group.Gender,education level,marital status,smoking status,drinking status,incision size,bleeding volume,blood transfusion were not statistically significant between the case group and the control group were not statistically significant(P>0.05).3.The age,BMI,hospitalization days were influencing factors of postoperative infection in orthopedic surgery patients.Compared with age≤45 years old,the risk of postoperative infection in patients with orthopedics aged 46-65 years and older than66 years were increased by 3.435 times(OR=3.435)and 4.384 times(OR=4.384).Compared with normal BMI(18.5≤BMI<24),the risk of postoperative infection in orthopedic patients with obesity(BMI≥28)increased by 3.316 times(OR=3.361).Compared with patients who were hospitalized for less than 10 days,the risk of postoperative infection in orthopedic patients with patients who hospitalization days greater than 10 days increased by 3.260 times(OR=3.260).Conclusion:1.A retrospective survey of 2,734 cases of patients undergoing orthopedic surgery in a hospital in Siping from March 2014 to March 2016 was conducted.In the case group,85 patients were infected,and the infection rate was 3.11%.2.Age was a risk factor for postoperative infection in orthopedic patients.The older,the more prone to infection.3.Obesity was a risk factor for postoperative infection in orthopedic patients.Compared with normal BMI(18.5≤BMI<24),the risk of postoperative infection in orthopedic patients with obesity(BMI≥28)increased.4.The hospitalization days was a risk factor for postoperative infection in orthopedic patients,the longer the hospital days,the more prone to infection after surgery.