PTU - Polskie Towarzystwo Urologiczne
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Urinary tract infections and bacterial colonization of Double-J catheters
Article published in Urologia Polska 2006/59/3.


Rafał Kli¶ 1, Ewa Korczak-Kozakiewicz 2, Waldemar Różański 1
1 I i II Klinika Urologii Katedry Urologii Uniwersytetu Medycznego w Łodzi
2 Zakład Mikrobiologii Lekarskiej i Sanitarnej Katedry Mikrobiologii Uniwersytetu Medycznego w Łodzi


urinary tract, Double-J catheter, infection, bacteriuria


Introduction and the aim of the study. Ureteral Double-J stenting is a method facilitating the upper urinary tract drainage. Long-term ureteric stenting is associated with bacterial colonization of both stent surface and urine. The aim of the study was to evaluate the correlation between the type of bacteria cultured from the different Double-J catheter sections, removed from urinary tract, and the microorganisms cultured from urine. Relationship of positive Double-J catheter cultures with duration of J stenting was also evaluated.
Material and methods. 42 patients, who had Double-J stents inserted, were enrolled into the study. They had their urine cultured prior to the stent insertion and again prior to the stent removal. The stent itself was immediately sent for culture, separately for the pelvical, ureteral and vesical section and the cultures were performed according to the obligatory microbiological standards.
Results. Urine cultures, obtained prior to the stent removal, were positive in 10 cases. In 32 cases the cultures were negative. Urine cultures were negative in all patients that had their stent kept for shorter than 30 days. There were 25% positive urine cultures in case of the stents maintained for the period longer than 30 days, but not longer than 90 days, and 45% in case of catheters kept for longer than 90 days. Of all 42 stents, only 1 was not colonized. In 41 cases the catheter cultures were positive, with different bacteria species detected.
Conclusion. There was a relationship between the duration of Double-J stenting and urine culture. We found that maintenance of Double-J catheter in the urinary tract is associated with a high risk for bacterial colonization. We also observed that urine and respective Double-J stent sections were colonized by different bacteria species.


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Rafał Kli¶
II Klinika Urologii UM
ul. Pabianicka 62
93-513 ŁódĽ
tel. (042) 689 52 11