Analysis of the causes of urinary tract infection after URL surgery and study on the distribution of pathogenic bacteria
Objective To analyze the causes of urinary tract infection and the distribution of pathogenic bacteria after flexible ureteral lithotripsy(URL).Methods The clinical data of 100 pa-tients with kidney stones who underwent URL surgery in our hospital from January 2019 to May 2020 were selected.The patients were divided into groups according to whether they were diagnosed with u-rinary tract infection,and the patients were divided into infection group(44 cases)and non-infection group(56 cases).Logistic regression analysis of factors was used to summarize the independent risk factors of urinary tract infection in patients.Results A total of 50 pathogenic bacteria were isolated and cultured in the urine of 44 patients with urinary tract infection after renal calculi surgery,of which Gram-negative bacteria accounted for 58.00％(29/50),the strains with higher detection rate were Escherichia coli 28.00％(14/50),Pseudomonas aeruginosa 20.00％(10/50),and Gram-positive bacteria accounted for 28.00％(14/50),among which Staphylococcus aureus was the highest detec-ted[14.00％(7/50)],and 7 strains of Proteus and Fungi were detected(14.00％).Multivariate logistic regression analysis showed that infective calculi,no antibiotics used before surgery,postopera-tive hemorrhage,retention time ≥7 days after catheter operation,preoperative urinary tract infection and history of diabetes were independent risk factors for postoperative urinary tract infection(all P＜0.05).Infectious stones were associated with urinary tract infection after URL surgery,and the corre-lation was the highest(P＜0.001).Conclusions There are many factors affecting the occurrence of urinary tract infection after URL surgery,and more attention should be paid to the infection of Esche-richia coli and pseudomonas aeruginosa in preventive treatment.At the same time,patients'infectious stones have the highest correlation with urinary tract infection after URL surgery.
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