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The natural course of urinalysis after urinary diversion

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Abstract

Objective

To evaluate the impact of urinary diversion on regular features of urinalysis and to screen for risk factors of infection-related complications.

Methods

We conducted a retrospective, single-centre study of 429 patients who underwent open radical cystectomy. Patients were followed for 12 months and data of the complete urinalyses were analysed at three pre-defined time points.

Results

Two weeks after surgery, dipstick testing with positive reactions for leukocyte esterase and haemoglobin were confirmed in 80.7% and 80% after ileal conduit (IC) and orthotopic ileal neobladder (NB), respectively. Every patient was positive for these parameters 12 months after surgery. Correspondingly, the microscopic examination detected leukocytes (84% vs. 85.4%), erythrocytes (82.8% vs. 83.8%) and bacteria (94.3% vs. 96.8%) following IC and NB reconstruction. After 12 months, all parameters were positive irrespective of the type of urinary diversion. Two weeks after surgery positive urine cultures were obtained in more than 50% of cases after IC (52.5%) and NB (60.5%) (p > 0.05). All urine cultures were positive after 12 months with significantly more poly-microbial results found after NB (81.3%) compared with IC (67.2%) (p = 0.018). In univariate and multivariate logistic regression analysis the presence of hydronephrosis was independently associated with the occurrence of infectious complications (OR 4.2; CI 95% 1.525–11.569; p = 0.006).

Conclusion

A positive urinalysis is a common finding after urinary diversion. Hydronephrosis is a serious risk factor with respect to infection-related complications. The simple fact of a positive urinalysis does not warrant antimicrobial treatment.

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Authors and Affiliations

  1. Department of Urology, Ludwig-Maximilians-University of Munich, Marchioninistrasse 15, 81377, Munich, Germany

    Giuseppe Magistro, Lukas Zimmermann, Robert Bischoff, Thilo Westhofen, Tobias Grimm, Boris Schlenker, Christian G. Stief & Julian Marcon

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  1. Giuseppe Magistro
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  2. Lukas Zimmermann
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  3. Robert Bischoff
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  4. Thilo Westhofen
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  6. Boris Schlenker
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Correspondence to Giuseppe Magistro.

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Magistro, G., Zimmermann, L., Bischoff, R. et al. The natural course of urinalysis after urinary diversion. World J Urol 39, 1559–1567 (2021). https://doi.org/10.1007/s00345-020-03355-0

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  • DOI: https://doi.org/10.1007/s00345-020-03355-0

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