To investigate the clinical characteristics and changes of renal morphology in male patients with indwelling ureteral stent combined with febrile urinary tract infection.

Total of 50 male cases with urinary tract infection and ureteral stent from April 2012 to April 2015 (the observation group), and 50 male cases with urinary tract infection and indwelling catheter at the same time (the control group) were selected. The routine detection of urine and blood, pathogen distribution and renal morphology characteristics of the two groups were compared and analyzed, respectively.

Compared with the control group, the white blood cell count was significantly higher in patients of the observation group, and the number of patients with renal inflammatory disease was significantly increased. In 50 cases of observation group, 61 strains of bacteria with urine bacterial culture positive were detected, among which, 47 strains were Gram-negative bacteria and 14 strains were Gram-positive bacteria. In 48 cases of the control group, 72 strains bacteria with urine bacterial culture positive were detected, among which, 41 strains were Gram-negative bacteria and 31 strains were Gram-positive bacteria. The proportion of Gram-negative bacteria in the observation group was significantly higher than that in the control group (χ² = 5.358, P = 0.012). The patients in both groups before renal inflammatory lesions were not positive; the postoperative observation group of 50 cases were with renal inflammatory disease. While only 2 patients in the control group showed renal inflammatory lesions kidney inflammation positive ratio was significantly higher in the observation group than that of the control group (χ² = 12.625, P = 0.001).

The clinical manifestations of the patients with indwelling ureteral stent combined with febrile urinary tract infection were mainly with high white blood cells, Gram-negative bacteria were the main pathogenic bacteria, and were mostly associated with renal parenchymal inflammation.