Background & objectives: There are well documented cases of transmission of nosocomial infections during anesthesia procedures. A significant factor in preventing nosocomial infections is the effective cleaning of anesthesia equipment. The aim of this study was to determine bacterial contaminate rate and type on laryngoscope blades in operation rooms of Imam Ali hospital in Bojnurd.

Materials and Methods: In this descriptive study which was done in 2014 , 98 laryngoscope blades were selected in operation rooms randomly. Blind sampling was done with normal saline sterile swap

Results: The results showed that from 98 laryngoscope blades 57 blades were contaminated and  most contamination was related  to gram- positive bacilli.

Conclusion: Our findings indicate that current method for washing and disinfection is not effective and  so serious measures  should be taken to eliminate the potential risk for infection.    

Keywords: Nosocomial  infection, Bacterial contaminate, Laryngoscope