Objective To investigate the trend of surgical site infections in a district general hospital in Shanghai from 2016 to 2023.Methods The data of surgical site infections from 2016 to 2023 were collected and sorted through the Real-time Hospital Infection Monitoring System.The annual percentage change(APC)and average annual percentage change(AAPC)were calculated by Joinpoint regression model to analyze the time trend.Results From 2016 to 2023,the average surgical site infection rates in Departments of General Surgery,Orthopedics and the whole hospital were 1.67%,0.85%and 0.55%,which were decreased from 2.97%,2.06%and 0.92%in 2016 to 0.91%,0.43%and 0.31%in 2023,respectively.The results of Joinpoint regression model analysis showed that the AAPC of surgical site infection rates from 2016 to 2023 were-17.50%(95%CI:-24.75%--9.55%)in the whole hospital,-17.68%(-25.85%--8.62%)in general surgery department and-24.18%(-30.65%--17.10%)in orthopedics department,respectively(all P<0.05).From 2016 to 2020,the rate in orthopedics decreased by 30.99%(APC 95%CI:-44.76%--13.79%)per year(Z=5.30,P=0.013).From 2016 to 2023,a total of 477 strains of pathogenic bacteria were isolated from the specimens of surgical site infection.The top 6 pathogens were Escherichia coli(26.00%),Staphylococcus aureus(16.35%),Enterococcus(13.21%),Klebsiella pneumoniae(9.64%),Pseudomonas aeruginosa(8.60%)and Acinetobacter baumannii(5.03%).The proportion of Klebsiella pneumoniae increased with a rate of 33.31%(AAPC 95%CI:8.44%-63.89%),and the change trend was statistically significant(Z=2.73,P=0.006).Conclusion From 2016 to 2023,the surgical site infection rate of a district general hospital in Shanghai shows a significant decline trend,indicating that the nosocomial infection prevention and control effect is remarkable,but the meticulous management of the whole perioperative period still needs to be strengthened.
surgical site infectionsurveillanceJoinpoint regression analysisetiology