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Contamination bacterienne residuelle des optiques utilisees en consultation ORL apres nettoyage avec une compresse imbibee de desinfectant. [Residual bacterial contamination of rhinoscopes used in ENT consultation after cleaning with a pad impregnated with a disinfectant]
Schweizerische Medizinische Wochenschrift
INTRODUCTION: The duration of the official disinfection procedure of a Hopkins rhinoscope agreed by the hospital hygiene authorities may be a handicap in a busy ENT consultation. A shortened procedure is sometimes used, but without risk assessment. OBJECTIVE: To determine the risk of contamination of the endoscope used for rhinoscopy after simple manual cleaning with a pad impregnated with a disinfectant solution (Neosabenyl). PATIENTS AND METHOD: In 60 patients undergoing rhinoscopy at our ENT policlinic, a nasal swab as well as the endoscope were examined bacteriologically. The nasal physiological flora and specifically Staphylococcus aureus were semiquantitatively analysed on each specimen. In 50 patients, the rhinoscopes were simply cleaned with an impregnated pad, whereas in 10 patients the official disinfection procedure with glutaraldehyde was applied. RESULTS: 25 out of the 50 endoscopes (50%) which were manually cleaned with the impregnated pad, were still contaminated with bacteria. Among the 12 (20%) identified healthy carriers of S. aureus, 7 (58%) showed a rhinoscope still contaminated with S. aureus after cleaning with the pad. The overall risk of contaminating the following patient with S. aureus is 14%. None of the 10 endoscopes cleaned and disinfected with glutaraldehyde were contaminated. CONCLUSIONS: Simple manual cleaning and disinfection with an impregnated pad is insufficient and carries the risk of contaminating the following patient. This emphasises the need to follow the recommended cleaning and disinfection procedures even in a small or busy practice.
Carrier State Disinfectants Disinfection/*methods *Endoscopes *Equipment Contamination Glutaral Humans Nasal Mucosa/microbiology *Otolaryngology Risk Factors Staphylococcal Infections/*diagnosis/transmission Staphylococcus aureus/*isolation & purification
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