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On the methods of disinfecting bronchofibroscopes
A A Ovchinnikov1, S A Dratvin, L V Pilavina
1Department of Surgical Diseases No. 1 of the Second Medical Faculty, I.M. Sechenov First Moscow Medical Institute, USSR.
Journal of Hygiene, Epidemiology, Microbiology, and Immunology
|January 1, 1990
Summary
This study introduces a novel apparatus for wet disinfection of bronchofibroscopes, effectively cleaning external surfaces and channels. Chlorohexidine and benzalkonium chloride demonstrated superior disinfection efficacy compared to other agents.
Area of Science:
- Medical Microbiology
- Infection Control
- Biomedical Engineering
Background:
- Bronchofibroscopes require effective disinfection to prevent cross-contamination.
- Current disinfection methods may not adequately address all components of bronchofibroscopes.
Purpose of the Study:
- To evaluate a new apparatus for wet disinfection of bronchofibroscopes.
- To determine the efficacy of various disinfectant solutions and exposure times.
Main Methods:
- Development of a novel apparatus for wet disinfection of bronchofibroscopes.
- Testing disinfectants including chlorohexidine, benzalkonium chloride, diocide, and ethanol.
- Experimental and clinical contamination with relevant microorganisms.
Main Results:
- 0.5% chlorohexidine (aqueous and ethanol) and 1% benzalkonium chloride achieved effective disinfection within 5 minutes.
- 0.1% diocide required 30 minutes for bactericidal effect.
- Soaking the endoscope in disinfectant was insufficient for adequate disinfection.
Conclusions:
- The proposed apparatus facilitates effective wet disinfection of bronchofibroscopes.
- Specific disinfectant concentrations and exposure times are crucial for microbial control.
- The apparatus shows promise for clinical application in preventing healthcare-associated infections.