Effects of Different Disinfectants on Decontamination of Laryngoscopes; [Laringoskoplarin Dezenfeksiyonunda Kullanilan Dezenfektanlarin Etkinliǧinin Karşilaştirilmasi]

Tekin I.; Arican I.; Akçali S.; Şanlidaǧ T.; Özbakkaloǧlu B.

Effects of Different Disinfectants on Decontamination of Laryngoscopes; [Laringoskoplarin Dezenfeksiyonunda Kullanilan Dezenfektanlarin Etkinliǧinin Karşilaştirilmasi]

Date

2003

Authors

Abstract

Guidelines for controlling possible contamination of laryngoscopes should be formulated with the benefit of relevant experimental data. In this study, the effects of five different disinfectants commonly used for the disinfection of laryngoscopes are evaluated. We formed 14 groups consisting of 10 blades in each. The first 7 groups were contaminated with hospital related meticillin resistant Staphylococcus aureus (MRSA), and the other 7 groups with hospital related multiple resistant Pseudomonas aeruginosa (PA). For the first group of blades, no disinfection procedure was carried out and, were assumed as a control group. Blades in other groups were rested for 10 minutes in containers containing 70 % alcohol, 1/100 dilution of cetrimide, 1/100 dilution of chlorhexidine, 1/10 dilution of chlorhexidine, 1/10 dilution of povidone iodine, and 1/100 dilution of ammonium chloride in groups II,III,IV,V,VI, and VII respectively. Disinfectant used in a group was considered as effective when growth was seen in 5 or less than 5 plates representing that group. All disinfectants tested were found effective on decontamination of laryngoscopes. 5 different moderate level disinfectants which are commonly used for the disinfection of laryngoscopes have been found effective even on resistant hospital microorganisms like MRSA and P. aeruginosa. Finding effective, cheap and time saving methods by choosing a specific disinfectant, concentration and contact time is not difficult as long as clinicians are aware of the principles of the laringoscopes disinfection procedures.