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[Rifampicin-protamine sulfate solution in dialysis patients]
Marie Lecame1, Stéphanie Legras, Maxence Ficheux
1Service de pharmacie, CHU de Côte-de-Nacre, 14033 Caen cedex, France.
Nephrologie & Therapeutique
|May 6, 2008
Summary
This study assessed the stability and sterility of a rifampin-protamine solution used to prevent catheter infections in hemodialysis patients. The combination proved stable and compatible, though broth culture interference was noted.
Area of Science:
- Pharmaceutical Sciences
- Microbiology
- Clinical Pharmacy
Context:
- Catheter-related infections are a significant complication in hemodialysis patients, often linked to bacterial biofilms.
- The combination of rifampin and protamine is utilized in some centers to mitigate these infections.
- A thorough pharmaceutical assessment of this mixture is essential due to its clinical application.
Purpose:
- To evaluate the pharmaceutical stability and sterility of a rifampin-protamine solution.
- To determine the compatibility of rifampin and protamine when combined.
- To assess the efficacy of the mixture in preventing microbial growth.
Summary:
- Rifampin-protamine solutions were prepared and stored at -20°C then 4°C for four weeks.
- Stability was assessed via High-Performance Liquid Chromatography (HPLC) for rifampin concentration and heparin neutralization assay for protamine activity.
- Sterility was evaluated using broth cultures and mannitol agar plates.
Impact:
- The rifampin-protamine solution demonstrated stability and compatibility over the four-week study period.
- While mannitol agar cultures showed no microbial growth, broth cultures yielded inconclusive results due to biological interference.
- The findings support the preparation of rifampin-protamine in single-use, individualized conditions at the time of administration.
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