Urinary tract infections in children in the era of growing antimicrobial resistance – recommendations of the Polish Society of Paediatric Nephrology

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Introduction and objective: Urinary tract infections can recur in children, and due to their potential long-term consequences, they require appropriate diagnosis and prompt treatment. Although Escherichia coli is the most common aetiology, an increase in infections with drug-resistant strains has been observed. The aim of this study was to develop current diagnostic and treatment recommendations in the era of increasing microbial resistance. Materials and methods: The recommendations are based on updated guidelines developed by the experts of the Polish Society of Paediatric Nephrology and a literature review. Results: Because the symptoms of urinary tract infection are often non-specific, urinalysis and urine culture should be performed in children presenting with fever without an identifiable cause. Correct method of urine collection and interpretation of the results are crucial for therapeutic decisions. Treatment should be continued for 7–14 days for upper and 3–5 days for lower urinary tract infections; the choice of the narrowest-spectrum antimicrobial should be based on bacterial susceptibility. Antibiotic prophylaxis is limited and recommended in children with grade III–V vesicoureteral reflux. Non-pharmacological management should include treatment of bladder and bowel dysfunction. Ultrasound is recommended for all children up to 24 months of age. Indications for voiding cystourethrography are limited to cases with ultrasound abnormalities, recurrent and septic infections. Conclusion: The paper provides up-to-date, practical recommendations for the diagnosis and management of urinary tract infections in children in the era of increasing microbial resistance and restricted indications for invasive radiological investigations.

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