Abstract
Negative ureteroscopy (NURS) is "a ureteroscopy in which no stone is found during the procedure." We aimed to determine the association between the surgical waiting list time (WLT) and the NURS rate. We retrospectively analyzed all patients scheduled for ureteroscopy in our center between January 2017 and July 2019. The inclusion criterion was unilateral, semirigid ureteroscopy for a single ureteral stone; exclusion criteria were renal-only stones, incomplete ureteroscopy, and stones >10 mm. We analyzed age; gender; body mass index; stone size, density, and location; presence of a temporary double-J (DJ) stent; use of medical expulsive therapy; and WLT. Complications while waiting for surgery were also collected and analyzed. We included 219 patients, 41 (18.7%) of whom had NURS. The median WLT was 74 days (interquartile range [IQR] 45-127). Variables protective against NURS were large stone size (odds ratio [OR] 0.78, 95% confidence interval [CI] 0.66-0.93), presence of a temporary DJ stent (OR 0.43, 95% CI 0.2-0.8), and radiopaque stones (OR 0.44, 95% CI 0.21-0.88). A long WLT ((≥60 days) increased the risk of NURS (OR 2.18, 95% CI 1.02-4.61). Complications requiring emergency department visits while waiting for surgery were documented in 58/137 (42.3%) patients with indwelling DJ stents; nonetheless, a WLT greater than the median was not associated with an increased risk of complications (p=0.38). Long WLT has an independent, direct, and linear correlation with NURS rates. Patients at higher risk of NURS, may be offered preoperative re-evaluation with a computed tomography scan in a resource-limited setting.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Canadian Urological Association journal = Journal de l'Association des urologues du Canada
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.