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Recurrent urinary tract infection — Clinical Guidelines

Overview

Recurrent urinary tract infections (rUTIs) involve multiple symptomatic UTI episodes within a specified period, commonly affecting women and posing challenges due to antimicrobial resistance. 1

Diagnosis

Symptom-based criteria: Multiple UTI episodes within 6 months or 2 episodes within 1 month.

Urinalysis: Presence of pyuria and bacteriuria.

Urine culture: Identifies causative organism and antibiotic sensitivities.

Imaging: Considered in cases with anatomical abnormalities (e.g., congenital anomalies). 2 5

Management

First-line treatments:

- Antibiotics: Standard first-line agents based on culture sensitivity.

Adjunctive therapies:

- Methenamine hippurate: Effective in extending symptom-free periods and reducing UTI recurrence rates, comparable to antibiotics. (Evidence: Strong) 1 - Contraceptive method adjustment: For women using diaphragms, consider changing to alternative contraception methods to reduce UTI recurrence. (Evidence: Moderate) 3

Special Populations

Pediatrics: Congenital anomalies like anterior urethral diverticulum should be evaluated and surgically addressed to prevent recurrent infections. 2

Comorbidities: No specific management adjustments noted in provided abstracts for elderly or pregnant populations regarding rUTIs.

Key Recommendations

Consider methenamine hippurate as a prophylactic option for recurrent UTIs in women, showing efficacy comparable to antibiotics in preventing UTI recurrence. (Evidence: Strong) 1

Evaluate and surgically manage congenital anomalies such as anterior urethral diverticulum in pediatric patients with recurrent lower urinary tract infections. (Evidence: Moderate) 2

For women experiencing recurrent UTIs associated with diaphragm use, altering contraceptive methods can significantly reduce infection frequency without antibiotics. (Evidence: Moderate) 3

References

1 Kale S, Somani BK. The resurgence of methenamine hippurate in the prevention of recurrent UTIs in women- a systematic review. Current opinion in urology 2023. link 2 Igarashi T, Higashihara E. Congenital anterior urethral diverticulum and recurrent urinary tract infection. Acta paediatrica Japonica : Overseas edition 1989. link 3 Gillespie L. The diaphragm: an accomplice in recurrent urinary tract infections. Urology 1984. link90381-9) 4 Davies R, Hunt AC. Surface topography of the female bladder trigone. Journal of clinical pathology 1981. link 5 Workman C, Porch P, Rhamy RK. The congenitally dilated prostatic utricle. The Journal of urology 1978. link57248-1)

Recurrent urinary tract infection