Infection Control, Sanitation, and Safety
The vocabulary that decides questions
Massachusetts exam questions in this domain turn on precise definitions, so learn them as a ladder. Cleaning removes visible debris with soap and water. Sanitizing reduces pathogens on surfaces to a safe level. Disinfection destroys most pathogens on hard, non-porous implements using an EPA-registered hospital disinfectant used per label. Sterilization destroys all microbial life, including spores, and is required for tools that contact broken skin or blood.
What goes where
Porous items that cannot be disinfected - nail files, buffer blocks, orangewood sticks, cotton, wooden spatulas - are single-use and discarded. Metal implements are cleaned, then completely immersed in disinfectant for the label's contact time (often 10 minutes). Disinfectant jars must be covered, labeled, and changed when cloudy or contaminated. Hand washing with soap and warm water remains the single most effective practice; hand sanitizer does not replace it after visible contamination.
Traps to expect
- "Disinfectant works instantly" - false; contact time governs.
- Mixing disinfectant stronger than the label is not safer and is a violation.
- A towel or cape used on a client is not disinfected between clients; it is laundered.
- Blood exposure: stop, glove, clean the area, apply an EPA-registered disinfectant, and report per workplace policy.
Rule of thumb
Ask "does it touch intact skin, broken skin, or only a surface?" Intact skin = sanitize; broken skin or blood = sterilize; hard non-porous tools = disinfect; porous = discard.