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  • Title: Effectiveness and patient perspective on the use of intravesical gentamicin instillations to treat recurrent urinary tract infections in neurogenic lower urinary tract dysfunction.
    Author: Cameron AP, Castrodad PM, Troost J, Forchheimer M, Tate DG.
    Journal: Neurourol Urodyn; 2024 Nov; 43(8):1916-1923. PubMed ID: 38860440.
    Abstract:
    INTRODUCTION: Patients with neurogenic lower urinary tract dysfunction (NGLUTD) who require catheterization either with clean intermittent catheters (CIC) or indwelling catheters suffer with frequent urinary tract infections (UTIs). This study assessed the efficacy, patient persistence, satisfaction, and the impact on quality of life (QoL) of gentamicin nightly bladder instillations with 15 mg. METHODS: This is a prospective survey of 36 patients with NGLUTD and recurrent UTIs prescribed long-term gentamicin to prevent UTIs. Eligible patients completed a questionnaire about their use and satisfaction with gentamicin therapy, as well as survey questionnaires to address QoL. A retrospective chart review was also performed to obtain medical history, confirm drug persistence, and obtain accurate UTI data for the 12 months preceding and after starting instillations. RESULTS: The rate of laboratory proven symptomatic UTI requiring antibiotic treatment decreased from 3.9 to 1.1 infections per year with no increase in antibiotic resistance and no significant side effects reported by patients. Eight patients stopped therapy before a full year for various reasons, but the remaining 72% of patients have continued to use the therapy now with a mean of 4.2 years later. Satisfaction among those continuing the medication was very high. CONCLUSION: Gentamicin bladder instillations with 15 mg nightly in patients with indwelling catheters or CIC with NGLUTD are very effective and safe with high patient satisfaction. This therapy can be maintained long-term with continued efficacy.
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