A Case-control Study on Nosocomial Infection in Robotic Surgery Based on Propensity Score Matching
Objective To analyze the impact of robotic surgery on nosocomial infection and associated risk factors of the sur-gical patients,to provide a basis for understanding the infection of robotic surgery and formulating corresponding prevention and control measures.Methods Patients who underwent robotic surgery at a tertiary hospital in Hubei Province between January 1,2019 and June 30,2023,were selected as the research subjects.The 1:4 propensity score matching(PSM)method was used to balance the baseline characteristics of the two groups of patients.Multivariate logistic regression was conducted to identify the risk factors for postoperative nosocomial infections in patients undergoing robotic surgery.Results Among the 769 patients who underwent robotic surgery,24 cases and 26 episodes of nosocomial infections were identified,resulting in an infection rate of 3.12%and an episode infection rate of 3.38%.The primary sites of infection were the lower respiratory tract(29.17%),followed by the urinary tract(20.83%),the upper respiratory tract,skin,tissue in the ab-dominal or pelvic cavity,and surgical sites(8.33%each),as well as other areas(12.5%),and infectious diarrhea(4.17%).A total of 23 strains of pathogenic bacteria were detected,with Gram-negative bacteria being the predominant type(60.87%).Multivariate logistic regression revealed that the number of operations(OR=5.854,95%CI=1.139~30.090,P=0.034)and the use of antibiotics before infection(OR=5.612,95%CI=1.123~28.036,P=0.036)were independent risk factors for nosocomial infection in robotic surgery.Conclusion The incidence of postoperative nosocomial infections in patients undergoing robotic surgery in the hospital is relatively low,and effective prevention and control measures should be implemented to reduce the risk of the infections.