Which parameters must be recorded to verify an autoclave cycle?

• A. Operator initials
• B. Load weight
• C. Cycle number
• D. Temperature, pressure and time of the cycle

Answer: (D)

To verify an autoclave cycle, you must confirm the actual conditions achieved during that cycle. The sterilization process relies on heat delivered by steam at a known temperature and pressure for a defined period. Recording the temperature, pressure and the cycle time provides objective evidence that the required sterilization conditions were met for that load. Temperature ensures enough heat is reached, pressure indicates steam saturation and helps achieve the necessary heat transfer, and the time ensures exposure lasted long enough to inactivate microorganisms. A printout or data logger should show these three values for every cycle, supporting compliance and traceability. While operator initials, cycle number or load weight are useful for records and logistics, they do not by themselves prove that the cycle reached and maintained the necessary parameters.