ESPU Congress 2018 - Abstract Book

118 29 th CONGRESS OF THE ESPU 09:04–09:07 S14-5 (PP) URETERAL STENT COLONIZATION AND URINARY TRACT INFECTION IN CHILDREN UNDERGOING MINIMALLY INVASIVE PYELOPLASTY Amos NEHEMAN  1 , Ashraf TAMIMI  1 , Miki HAIFLER  1 , Kobi STAV  1 , Abd El-Halim DARAWSHE2  2 , Ilan LEIBOVITCH  2 , Galina GOLTZMAN  3 and Amnon ZISMAN  1 1) Assaf Harofeh Medical Center, Urology Department, Rishon Le Zion, ISRAEL - 2) Meir medical center, Urology Department, Kfar Saba, ISRAEL - 3) Assaf Harofeh Medical Center, Infectious diseases Department, Rishon Le Zion, ISRAEL PURPOSE To evaluate the association between the microorganisms causing urinary tract infection (UTI) and stent colonization in children with indwelling double J ureteral stents (DJS) after minimally invasive pyeloplasty. MATERIAL AND METHODS We reviewed the medical records of 30 (22 males and 8 females) consecutive patients who un- derwent laparoscopic and robotic assisted pyeloplasty with DJS insertion. Urinary cultures were obtained before surgery, before stent extraction (if any urinary tract infection was suspected during the indwelling period) and one month after extraction. Proximal, mid and distal parts of the stent were sent for culture. Univariate and multivariable logistic regression analyses were utilized to find predictors for post- operative UTI and stent colonization. RESULTS The median age at surgery was 2.1 years (range 2 month to 17 years). The median period for stent indwelling was 5.09 (4.57–6.00) weeks. UTI during the stent indwelling period occurred in 30 % of cases. 63 % of stent cultures were positive. Stent and urinary cultures were identical in only one case. There were no cases of UTI one month after stent extraction, however, 3 cases of asymptomatic bacteriuria were observed. There was no statistically significant association between clinical UTI, gender, stent diameter and indwelling period duration. CONCLUSIONS The causative pathogen of UTI after minimally invasive pyeloplasty is unrelated to the isolated bacteria from stent cultures. Therefore, routine stent culturing is of low clinical significance. Small caliber stents and longer indwelling periods do not seem to be risk factors for UTI. 09:07–09:22 Discussion