Which sterilization method should a respiratory therapist use for a bronchoscope?

• A. Alkaline gluteraldehyde (Cidex)
• B. Irradiation followed by ethylene oxide
• C. Pasteurization
• D. Steam autoclave

Answer: (A)

Using alkaline glutaraldehyde (commonly known as Cidex) is an effective sterilization method for bronchoscope reprocessing. This chemical agent is specifically utilized for high-level disinfection of heat-sensitive medical instruments, such as bronchoscopes, which cannot withstand high-temperature sterilization methods like steam autoclaving.

Cidex works by denaturing proteins and disrupting cellular functions of microorganisms, ensuring complete disinfection. The prolonged immersion of the bronchoscope in alkaline glutaraldehyde typically allows for effective microbial kill, making it suitable for ensuring the instrument is safe for patient use.

While other options may be appropriate for different types of instruments or circumstances, they do not offer the same level of effectiveness or safety for bronchoscopes. For instance, steam autoclaving, while a reliable sterilization method for heat-stable instruments, cannot be used on delicate respiratory instruments like bronchoscopes. Irradiation followed by ethylene oxide is typically more complex and used less frequently, often for single-use items or materials that cannot handle moisture. Pasteurization generally does not achieve the high level of disinfection required for bronchoscopy equipment.