Abstract:Objective To investigate the diagnostic values of serum inflammatory factors levels in urinary tract infection after percutaneous nephrolithotomy (PCNL).Methods 120 patients underwent PCNL were selected from June 2016 to June 2021 as the research object. They were divided into infection group (44 cases) and non infection group (76 cases) according to whether the patients were complicated with urinary tract infection after operation. The levels of serum inflammatory factors before and 24 h after operation were compared between the two groups, and the efficacy of the three serum indexes in diagnosing urinary tract infection after PCNL was analyzed.Results The serum PCT, IL-6 and NF-κB levels in the two groups 24 h after operation were significantly higher than those before operation (P < 0.05), and the levels of three serum indexes of infection group were higher than those of non infection group 24 h after operation (P < 0.05). The sensitivity and area under the curve (AUC) of combined diagnosis of serum PCT, IL-6 and NF-κB in patients with urinary tract infection after PCNL were 90.91% and 0.929 respectively, which were higher than those of single serum index diagnosis (P < 0.05), and the specificity was similar to that of single diagnosis (P > 0.05).Conclusion The levels of serum inflammatory factors in patients with urinary tract infection 24 h after operation were higher than those before operation, and all had a certain diagnostic efficacy for urinary tract infection after PCNL, but the combined diagnostic efficacy of the three serum indexes was higher, which can be used as an important tool for clinical diagnosis.