For a germicide to obtain a high level disinfection (HLD) claim, FDA requires demonstration of a 6-log reduction of mycobacterial inoculum under worst case conditions.
The purpose of this study was to assess the adequacy of current guidelines for high level disinfection of GI endoscopes using alkaline glutaraldehyde in simulated-use testing.
Various gastrointestinal endoscopes were contaminated with Mycobacterium chelonae in 46 experiments.
Quantitative cultures were obtained from each endoscope channel separately after each step : inoculation, standardized manual cleaning, immersion in 2% glutaraldehyde (Cidex) for 10,20, or 45 min at room temperature, 70% isopropanol rinse, and drying.
Manual cleaning alone achieved a 4-log reduction.
After 10 min of glutaraldehyde exposure, but before alcohol rinse, two of 10 experiments failed to achieve a 6-log reduction.
However, after alcohol rinse, all 10 experiments achieved HLD.
After 20 min of glutaraldehyde exposure, but before alcohol rinse, one of 18 experiments failed to achieve a 6-log reduction.
After alcohol rinse, all 18 experiments achieved HLD.
After 45 min of glutaraldehyde exposure, but before alcohol rinse, one of 18 experiments failed to achieve a 6-log reduction.
After alcohol rinse, all 18 experiments achieved HLD. (...)
Mots-clés Pascal : Endoscopie, Gastrointestinal, Prévention, Contamination, Transmission homme homme, Désinfection, Endoscope, Cahier charge technique, Glutaral, Evaluation performance, Homme, Appareil digestif pathologie, Infection nosocomiale
Mots-clés Pascal anglais : Endoscopy, Gastrointestinal, Prevention, Contamination, Transmission from man to man, Disinfection, Endoscope, Technical general contract conditions, Glutaral, Performance evaluation, Human, Digestive diseases, Nosocomial infection
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0321510
Code Inist : 002B24E08. Création : 16/11/1999.