When a nurse is performing a surgical hand hygiene, she must keep hands:

Appeared in: BHU NO-2019

Explanation

The core principle of surgical hand hygiene is to prevent contamination by using gravity to direct water flow.
Hands are considered the cleanest part during the scrub, and elbows are the least clean.
By keeping hands above the elbows, water runs from the fingertips down to the elbows, washing contaminants away from the hands.
This technique ensures that the hands remain as free from microorganisms as possible before donning sterile gloves.

Option A: Holding hands below the elbows would cause water from the less clean forearms and elbows to flow down onto the clean hands, contaminating them.
Option B: Specifying a 45-degree angle is arbitrary and not the guiding principle. The critical factor is the relative position of the hands to the elbows, not a specific angle.
Option D: A 'comfortable position' is subjective and unreliable for maintaining asepsis. It could easily lead to a nurse inadvertently lowering their hands below the waist or elbows, which would result in contamination.

Clinical Relevance

Nursing practice connection: Knowing Surgical Hand Hygiene Technique helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Adherence to proper surgical hand hygiene is a critical factor in preventing Surgical Site Infections (SSIs), a major cause of post-operative morbidity and mortality.
Nurses are responsible for maintaining the sterile field. A break in their own aseptic technique, such as improper hand scrubbing, directly endangers the patient.
What if? If a nurse accidentally touches the faucet or their scrubs with their hands after starting the scrub, the entire process must be started over from the beginning to ensure sterility.

How to Approach the Question

First, identify the core concept of the question, which is 'surgical hand hygiene'. This is distinct from routine handwashing.
Recall the fundamental principles of surgical asepsis, specifically the concept of moving from 'clean to dirty' or 'clean to less clean'.
Think about the role of gravity. How would water flow in different arm positions?
Evaluate each option based on this principle. The hands are the 'cleanest' part. Water must flow away from them.
Eliminate options that would cause water to flow towards the hands (Below elbows) or are too vague and risk contamination (In a comfortable position).

Concept Tested & Keywords

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E6 Nursing Fundamentals Potter Perry 12e Part 2 pp. 244-246, 254-256

Practise the full BHU NO-2019

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