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Updated: Sep 23, 2026

Transurethral Induction of Mouse Urinary Tract Infection
Published on: August 5, 2010
[Urinary tract infections in children under three years of age]
Agnieszka Zmysłowska1, Janusz Kozłowski, Elzbieta Zielińska
1Klinika Chorób Dzieci Instytutu Pediatrii Uniwersytetu Medycznego w Łodzi.
Insights
Urinary tract infections (UTIs) in young children often recur. Early imaging diagnosis is crucial for infants and babies with UTIs to detect conditions like vesicoureteral reflux.
Area of Science:
- Pediatrics
- Urology
Background:
- Urinary tract infections (UTIs) present a significant clinical challenge in infants and babies.
- Recurrent UTIs are common in children under three years of age.
Purpose of the Study:
- To conduct a clinical analysis of children under three years old diagnosed with UTI.
- To evaluate the diagnostic approaches and outcomes for pediatric UTI cases.
Main Methods:
- Retrospective analysis of 91 children (aged 1-36 months) hospitalized with UTI between 2000-2001.
- Voiding cystography performed in 82% of patients to assess for vesicoureteral reflux (VUR).
- Identification of common uropathogens, with a focus on Escherichia coli.
Main Results:
- Acute UTI occurred in 29% of cases, while 71% experienced recurrent UTI.
- Vesicoureteral reflux (VUR) was diagnosed in 28/91 children, with 64% being bilateral.
- Grade 2 VUR was the most frequent (64%) among patients with UTI.
- Escherichia coli was the predominant pathogen identified.
Conclusions:
- Early imaging diagnosis of the urinary system is essential for infants and babies presenting with UTI.
- Hospitalization and prompt diagnostic examinations are necessary for pediatric patients under three years old with UTI to manage potential complications like VUR.
Abstract:
Urinary tract infection (UTI) in infants and babies is still a challenging problem. The aim of the study was the clinical analysis of children under three years of age with UTI, hospitalised in The Department of Paediatrics, Medical University of Lodz in 2000-2001. The study included 91 children (45 girls and 46 boys), aged 1-36 months; 10 months on the average. Acute UTI was observed in 29% of children, recurrent UTI was diagnosed in 71% of patients. Voiding cystography was performed in 82% of children. Among 28/91 cases of vesicoureteral reflux, 36% were unilateral and 64% were bilateral. Vesicoureteral reflux grade 2 was most frequent (64%) in patients with UTI. The most common pathogen was Escherichia coli. The obtained results demonstrate the necessity of early imaging diagnosis of the urinary system in infants and babies with UTI. Patients under three years of age with UTI require hospitalisation and performance of early diagnostic examinations of the urinary tract.
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