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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