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Acute lower urinary tract infection — Clinical Guidelines

Overview

Acute lower urinary tract infection (UTI) involves infections limited to the bladder and urethra, often presenting with dysuria, frequency, and urgency. 1 2

Diagnosis

Clinical symptoms: Dysuria, frequency, urgency, hematuria, suprapubic pain.

Urine analysis: Pyuria, bacteriuria.

Urine culture: Essential for identifying causative organisms and guiding antibiotic therapy.

Voiding cystourethrogram: Indicated in cases of suspected anatomical abnormalities like posterior urethral valves (PUVs) 1.

Management

First-line treatment: Oral antibiotics (e.g., fosfomycin, nitrofurantoin, trimethoprim-sulfamethoxazole) based on local resistance patterns.

Duration: Typically 3-7 days, depending on severity and patient response.

Antibiotic prophylaxis: Considered in newborns with suspected infravesical obstruction to prevent secondary infections 1.

Supportive care: Increased fluid intake, pain management.

Special Populations

Pediatrics: Bladder drainage and antibiotic prophylaxis initiated in newborns with suspected infravesical obstruction like posterior urethral valves 1.

Pregnancy: Specific management details not covered in provided abstracts.

Elderly: No specific considerations detailed in abstracts; general principles apply.

Comorbidities: No specific guidelines provided for managing UTI in the context of comorbidities within the abstracts.

Key Recommendations

Initiate bladder drainage and antibiotic prophylaxis in newborns suspected of having infravesical obstruction, such as posterior urethral valves, to prevent secondary infections (Evidence: Expert opinion) 1.

Perform voiding cystourethrogram as soon as possible in cases where anatomical abnormalities like posterior urethral valves are suspected 1.

Use urine culture to guide antibiotic therapy for accurate pathogen identification and resistance pattern assessment (Evidence: Moderate) 1 2.

References

1 Gnech M, 't Hoen L, Radmayr C, Burgu B, Bogaert G, O'Kelly F et al.. Congenital Lower Urinary Tract Obstruction: Update and Summary of the European Association of Urology and European Society for Paediatric Urology Guidelines. European urology focus 2025. link 2 Lumen N, Kuehhas FE, Djakovic N, Kitrey ND, Serafetinidis E, Sharma DM et al.. Review of the current management of lower urinary tract injuries by the EAU Trauma Guidelines Panel. European urology 2015. link 3 Bloom DA, Foster WD, McLeod DG, Mittemeyer BT, Stutzman RE. Cost-effective uroflowmetry in men. The Journal of urology 1985. link49003-3)

Acute lower urinary tract infection