2023 Volume 36 Issue 2 Pages 245-248
We retrospectively investigated the distribution of pathogens and antimicrobial susceptibility in cultures of preoperative urine and renal pelvis urine at the time of surgery, to clarify the usefulness of collecting renal pelvis urine cultures for identifying the pathogens and the appropriateness of antibiotic selection in severe cases of pyelonephritis with ureteral stones requiring drainage. A total of 103 patients were diagnosed as having obstructive pyelonephritis with ureteral stones and received emergency stent placement. The median age was 70 years, and the median stone length was 8 mm. Preoperative urine samples were collected in 84 patients, and pathogens were identified in 55 patients, with positivity rate of 65.5％. Renal pelvis urine samples at the time of surgery were collected in 92 patients, and pathogens were identified in 45 patients, with positivity rate of 48.9％. Both urine specimens were collected in 75 patients, and pathogens were identified in 53 patients, with positivity rate of 70.7％. Thus, collecting both urine specimens may be useful in identifying pathogens.
