According to WHO, what is the duration for hand washing with a hand rub or alcohol-based sanitizer?

Appeared in: NORCET 2 - 2021 (shift-1)

Explanation

The World Health Organization (WHO) recommends a duration of 20-30 seconds for using an alcohol-based hand rub.
This timeframe allows for the completion of all the necessary steps to cover every surface of the hands, including palms, back of hands, between fingers, fingertips, and thumbs.
Sufficient contact time is essential for the alcohol to effectively kill transient microorganisms on the skin.
The procedure is considered complete when the hands are fully dry.

Option B: This duration is too short to properly perform all the steps of hand rubbing as recommended by the WHO, potentially leaving areas of the hands contaminated.
Option C: This is the recommended duration for handwashing with soap and water, not for using an alcohol-based hand rub.
Option D: This duration is for surgical hand antisepsis (a surgical scrub), which is a much more intensive procedure performed before invasive surgeries.

Visual 1: Infographic - A side-by-side comparison chart showing the steps and duration for an alcohol-based hand rub (20-30 seconds) versus a soap and water hand wash (40-60 seconds).
Visual 2: Diagram - The WHO's 'How to Handrub' poster, illustrating the 8-step process to be completed within 20-30 seconds.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain WHO guidelines for hand hygiene duration as background academic context rather than a clinical decision trigger.
Proper hand hygiene is the single most effective measure to prevent healthcare-associated infections (HAIs), protecting both patients and healthcare workers.
Knowing the correct duration for each hand hygiene method is critical for compliance and effectiveness. Using a hand rub for too short a time can lead to the transmission of pathogens.
What if? If a nurse has cared for a patient with a Clostridioides difficile (C. diff) infection, an alcohol-based hand rub is insufficient. The nurse must wash their hands with soap and water for 40-60 seconds because alcohol does not kill C. diff spores.

How to Approach the Question

First, identify the key terms in the question: 'WHO', 'duration', and 'hand rub' or 'alcohol-based sanitizer'.
This is a factual recall question based on established international guidelines.
Differentiate between the two main types of routine hand hygiene: alcohol-based rub and soap-and-water washing.
Recall the specific time recommended for the method mentioned (hand rub).
Mentally eliminate the options that correspond to other procedures, such as the time for soap-and-water washing (40-60 sec) or surgical scrubbing (3-5 min).

Concept Tested & Keywords

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Practise the full NORCET 2 - 2021 (shift-1)

Attempt every question from this paper in a timed mock, then review the full solution for each one.