Which three phases are part of a terminal steam sterilizer cycle?

The phases of a terminal steam sterilizer cycle are critical to ensuring the effective sterilization of medical instruments. The correct three phases are conditioning, exposure, and exhaust.

Conditioning is the initial phase where steam is introduced into the sterilizer and the load is brought to a temperature where it can accept steam effectively. This phase is essential for removing air from the sterilization chamber and ensuring that steam can reach all surfaces of the items being sterilized.

Exposure is the phase where the items are held at the required temperature and pressure for a specified period of time. This is the critical moment when the actual sterilization takes place, ensuring that microorganisms are killed effectively.

Exhaust is the final phase of the cycle where the steam is evacuated from the chamber, and the sterilized items are cooled down. Proper exhaust helps to ensure that excess moisture is removed from the sterilized items, which is important to prevent re-contamination and ensure the integrity of the instruments.

The other options do not accurately reflect the complete and correct phases of a terminal steam sterilizer cycle, as they either include incorrect steps or incomplete processes. Understanding these phases is essential for any professional in sterile processing to ensure the safe and effective sterilization of surgical instruments.