What’s already known about this topic?
Urinary tract infection after endourological stone treatment is a common complication. One of the main precautions is to capture sterile urine culture before the operation according to the guidelines; however, no comment was made regarding the timing of preoperative bladder urine culture (PBUC) before the surgery. In countries with a high rate of urinary system stone disease, waiting times are prolonged in stone surgeries such as semirigid ureteroscopic lithotripsy (SULL) in tertiary referral institutions. This causes an increase in the time between PBUC and SULL. In this study, we aimed to interrogate the preoperative and intraoperative factors that might cause systemic inflammatory responde syndrome (SIRS) in the early postoperative period and to investigate the effect of the time between PBUC and surgery on SIRS.