Safety of gentamicin bladder irrigations in complex urological cases

Area of Science:

• Pediatric Urology
• Pharmacology
• Infectious Diseases

Background:

• Recurrent urinary tract infections (UTIs) are prevalent in pediatric urological cases, especially those needing clean intermittent catheterization.
• Gentamicin bladder irrigations are utilized for antimicrobial prophylaxis and treating symptomatic bacteriuria in select cases.

Purpose of the Study:

• To evaluate the safety of gentamicin bladder irrigations in pediatric patients.
• To assess the efficacy and adverse events associated with this treatment modality.

Main Methods:

• Retrospective study of 80 children treated with gentamicin bladder irrigations (14 mg in 30 ml saline) between 1999 and 2004.
• Serum creatinine and gentamicin levels monitored based on toxicity risk.
• Patient data, lab results, and outcomes were collected from medical records.

Main Results:

• No patients exhibited detectable serum gentamicin levels above 0.4 mg/dl.
• Three patients with pre-existing renal insufficiency showed minor serum creatinine increases; no adverse events were documented.
• Twenty-six percent of patients experienced breakthrough UTIs, with 24% of those being gentamicin-resistant.

Conclusions:

• Gentamicin bladder irrigations serve as a valuable adjunct for managing recurrent symptomatic bacteriuria in complex pediatric urological cases.
• Intensive laboratory monitoring is deemed unnecessary for low-risk patients receiving this therapy.