What is the standard method for preparing instruments for sterilization after use?

• A. Autoclave immediately without cleaning.
• B. Pre-clean and remove debris, then load into sterilizer following packaging guidelines.
• C. Soak instruments in disinfectant for 24 hours.
• D. Rinse with water only before sterilization.

Answer: (B)

Cleaning before sterilization is essential because steam sterilization relies on clean surfaces for the steam to contact all areas and to effectively kill microorganisms. The best practice is to pre-clean and remove debris and organic matter, then load the instruments into the sterilizer following packaging guidelines so that the steam can penetrate properly and the load remains protected until use. After cleaning, inspect for damage and ensure proper packaging according to manufacturer directions. Soaking in disinfectant for 24 hours is not appropriate because it does not achieve sterilization and can leave residues or corrode instruments. Rinsing with water only leaves debris or biofilm that can block steam penetration and compromise sterilization. Autoclaving without cleaning undermines the sterilization process and can lead to ineffective sterility.