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[Pilot study of disinfection of optical instruments in otorhinolaryngology]
K Hörmann1, K Hirth, N Stasche
1Universitäts-HNO-Klinik Mannheim. karl.hoermann@hno.ma.uni-heidelberg.de
Abstract:
There is undoubtedly a need for a safe disinfection method of optical instruments used by ENT specialists. So far, a standard method that sufficiently covers the risk of infection for patients and medical staff alike while serving the need of practicability in daily routine has not been established. Therefore, in the ENT departments of the hospitals of Mannheim, Kaiserslautern, and Tübingen, studies on the disinfection of rigid optical instruments without working channel were performed between February 1999 and May 1999. Instruments were wiped either with an aldehyde or alcohol (ethanol 80%) and germs were detected by quantitative swab cultures. As discussed in the article, disinfection with ethanol proved to be at least equally efficient if not better than disinfection with aldehyde. Therefore, it fully serves the requirements of a safe method for disinfecting optical instruments without working channels.
Insights
Ethanol (80%) disinfection is a safe and effective method for cleaning ENT optical instruments. This study found it to be superior or equal to aldehyde disinfectants for routine use.
Area of Science:
- Otolaryngology
- Infection Control
- Medical Device Disinfection
Background:
- A standardized, practical disinfection method for ENT instruments is lacking.
- Current methods may not adequately protect patients and healthcare workers from infection.
- Rigid optical instruments without working channels require effective, routine disinfection.
Purpose of the Study:
- To evaluate the efficacy of ethanol (80%) versus aldehyde disinfectants for optical instruments.
- To determine a safe and practical disinfection protocol for ENT specialists.
- To compare germ reduction rates between different disinfection agents.
Main Methods:
- Disinfection of rigid optical instruments without working channels.
- Application of aldehyde or 80% ethanol by wiping.
- Quantitative swab cultures for germ detection.
Main Results:
- Ethanol (80%) demonstrated disinfection efficacy comparable or superior to aldehyde.
- Quantitative germ detection confirmed the effectiveness of ethanol.
- The study identified a practical and safe disinfection method.
Conclusions:
- Ethanol (80%) is a suitable and effective disinfectant for rigid optical instruments.
- This method meets the requirements for safe and practical daily use in ENT departments.
- Ethanol-based disinfection offers a reliable solution for instrument safety.