This study featured the retrospective review of patients undergoing ablation of non-obstructing renal stones for treatment of recurrent UTI between 2010-2016. Preoperative demographics, operative characteristics, and postoperative follow-up data was obtained and assessed. A UTI that occurred within the first 30 days postoperatively was considered a postoperative complication and not UTI recurrence. If a patient develops ≥ 3 UTIs within a single year would be considered recurrent.
At the study’s completion, 46 total patients were recruited retrospectively. The mean stone burden was 20 mm for the cohort with a range from 14 to 35 mm. Forty three percent of patients underwent URS only with no ESWL, while 22% required a second procedure for stone removal. Thirty nine percent of patients had residual stones and two patients experienced sepsis postoperatively. Of these patients, 53% had a positive stone culture during postoperative analysis. For the postoperative follow up data, the median follow-up time frame was 2.9 years with a range from 2 to 4.3 years. Of the observed patient cohort, 50% experienced a UTI after 30 days, and 11% (n=5) of the total cohort were deemed to have recurrent UTIs after stone removal according to the previously explained definition. Of these 5 patients with recurrence, 80% experienced the recurrence within one year and 80% also had the same culture as the original preoperative pathogen.
To conclude his presentation, Dr. Agarwal believes that removal of non-obstructing renal stones may be beneficial to the treatment of patients suffering from recurrent UTI. He recommended to the surgeons in the audience that the goal of the surgery should be to ensure that the patient is completely stone free.
Presented by: Deepak Agarwal, MD
Written by: Zachary Valley, Department of Urology, University of California-Irvine at the 2018 AUA Annual Meeting - May 18 - 21, 2018 – San Francisco, CA USA