CNA Certification (Written Exam)Infection Control and SafetyEasy
A nurse aide is teaching a new coworker about proper hand hygiene. What is the minimum amount of time hands should be scrubbed with soap and water to effectively remove germs?
- A60 seconds
- B20 seconds
- C5 seconds
- D10 seconds
Show answer & explanationAnswer & explanation
Correct answer: B. 20 seconds
The CDC recommends scrubbing hands with soap and water for at least 20 seconds to effectively remove germs, about the time it takes to hum 'Happy Birthday' twice. Shorter durations do not adequately reduce microorganisms.
Why the other options are wrong
- A. Longer than needed and impractical for routine care.
- C. Too short to remove germs effectively.
- D. Still insufficient time for proper cleaning.
Hand Hygiene Duration
Handwashing with soap and water should last at least 20 seconds to effectively remove pathogens.
- 20 seconds is the standard minimum
- Sing 'Happy Birthday' twice as a timer
- Applies to soap and water washing, not just sanitizer
Memory trick: Twice through 'Happy Birthday' keeps germs away.