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newSchoolWorks.com › VoTechWorks › Health & Personal Services › Nursing Assistant (CNA) › Infection Control for Nursing Assistants › Lesson 2
HLT-CNA36-05 · Lesson 2 · 6 clock hours · demo

Hand Hygiene: Technique, Timing, and Competency

Objective. Students will perform CDC-compliant soap-and-water handwashing and alcohol-based hand rub (ABHR) techniques, completing each step in correct sequence without instructor prompts.

⚠ Pending professional review

This lesson, its worked examples and its practice questions has not yet been verified by a licensed clinician in the field or by a certification or approval body. It is a study draft and may contain errors. Do not use it to make decisions about any patient or medication. Always follow your instructor, your supervising professional, and current official references and regulations.

VoTechWorks program approval and accreditation are still in progress. Credentials are issued only by the certifying bodies named in each program, after their own exams.

Why Hand Hygiene Is the Single Most Important Infection Control Action

Healthcare-associated infections (HAIs) spread most often on the hands of care workers. As a nursing assistant, your hands touch patients, equipment, and surfaces dozens of times every hour. Proper hand hygiene breaks that chain of transmission and is the foundation of every infection control practice you will learn in this program. State CNA registries and federal facility regulations both require competency in hand hygiene before you can legally practice.

Two Approved Methods

Soap-and-water handwashing is required whenever your hands are visibly soiled with blood, body fluids, or dirt; before and after eating; after using the restroom; and when caring for a patient with Clostridioides difficile (C. diff), because alcohol does not kill C. diff spores.

Alcohol-based hand rub (ABHR) is appropriate for routine care situations when hands are not visibly soiled. ABHR is faster and, in many studies, more effective at reducing most pathogens than soap and water when hands are not dirty.

CDC Six-Step Soap-and-Water Technique

Follow these steps every time you use soap and water. Each step matters; skipping one leaves organisms on your hands.

1. Wet hands with clean, running water (warm or cold). Turn the faucet on before touching soap.

2. Apply soap — enough to cover all hand surfaces.

3. Lather and scrub all surfaces for at least 20 seconds. Cover palms, backs of hands, between fingers, backs of fingers (interlaced), thumbs (rotational scrub), and fingertips/nails (rubbed in a circular motion against the opposite palm).

4. Rinse hands thoroughly under running water, pointing fingers downward so contaminated water drains away from the wrists.

5. Dry with a clean, single-use paper towel. Pat; do not rub aggressively, which can damage skin.

6. Turn off the faucet using the paper towel so your clean hands do not re-contact the handle. Discard the towel without touching the waste bin with clean hands.

The 20-second rule: Singing "Happy Birthday" twice at a normal pace is a reliable timer. Rushing this step is the most common competency failure.

CDC ABHR Technique

1. Apply the manufacturer's recommended amount of ABHR to the palm of one dry hand.

2. Rub palms together.

3. Rub the back of each hand with the opposite palm, fingers interlaced.

4. Rub between fingers (palm to palm, fingers interlaced).

5. Rub backs of fingers against the opposite palm with fingers interlocked.

6. Rub each thumb rotationally in the opposite palm.

7. Rub fingertips of each hand rotationally in the opposite palm.

8. Continue rubbing until hands are completely dry — do not wipe off the product; let it evaporate. This takes approximately 20–30 seconds.

Common Missed Areas (and How to Fix Them)

The Glo Germ simulation you will do in class reveals exactly where your technique is weak. Universally missed areas include:

If UV light shows residue in any area, repeat the full technique with deliberate attention to that zone.

When to Perform Hand Hygiene

The WHO "Five Moments for Hand Hygiene" framework, used in US facilities, identifies the key moments:

1. Before touching a patient

2. Before a clean or aseptic procedure

3. After body fluid exposure risk

4. After touching a patient

5. After touching patient surroundings

As a nursing assistant, you will also perform hand hygiene after removing gloves. Gloves are not a substitute — organisms can pass through microscopic glove defects and contaminate your hands upon removal.

Skin Care and Safety

Frequent handwashing can dry and crack skin, creating entry points for pathogens. Use the facility-approved hand lotion after your shift or during breaks. Never use petroleum-based products on your hands during a shift because they can degrade glove material. Report any open cuts, sores, or rashes on your hands to your supervisor immediately, as broken skin is both a safety risk to patients and to you.

Scope of Practice Note

Hand hygiene is within the nursing assistant scope of practice and is your personal responsibility every single time, without waiting to be reminded. Failure to perform hand hygiene at required moments is a patient safety violation that can result in disciplinary action and, in a testing environment, automatic failure of a skills competency check.

Key terms8

Healthcare-associated infection (HAI)An infection a patient acquires while receiving care in a healthcare setting, often transmitted on the hands of care workers.
Alcohol-based hand rub (ABHR)A gel, liquid, or foam containing alcohol used to reduce pathogens on hands that are not visibly soiled; it works by denaturing microbial proteins.
Transient floraMicroorganisms picked up temporarily on the skin surface during patient contact; these are the primary targets of hand hygiene and are removed relatively easily.
Resident floraMicroorganisms that live permanently in deeper skin layers; they are harder to remove and generally less likely to cause HAIs than transient flora.
Chain of transmissionThe sequence of steps (source → mode of transmission → susceptible host) that must all be present for infection to spread; hand hygiene interrupts this chain.
Five Moments for Hand HygieneA WHO framework identifying the five critical points in patient care when hand hygiene must be performed to prevent infection transmission.
Glo GermA training product (lotion or powder) that fluoresces under UV light, used to simulate contamination and reveal missed areas during handwashing practice.
Clostridioides difficile (C. diff)A spore-forming bacterium that causes severe diarrhea; its spores are not killed by alcohol, making soap-and-water handwashing mandatory when this pathogen is suspected or confirmed.
In class: Instructor demonstration of soap-and-water handwashing using the CDC six-step technique, narrating each step aloud; students follow along at sinks using a printed step checklist. · Glo Germ simulation: students apply Glo Germ lotion (or powder), perform their handwashing technique, then view hands under UV light to identify missed areas; each student records which zones were inadequately cleaned and repeats until all zones pass. · Peer-check practice pairs: Partner A performs ABHR technique while Partner B scores using the facility-style skills checklist; roles reverse; instructor circulates and provides corrective feedback.
Materials: Sinks with soap dispensers and paper towels, alcohol-based hand rub dispensers, Glo Germ lotion or powder, UV black light, CDC hand hygiene poster, skills checklist (soap-and-water and ABHR), disposable gloves for demonstration comparison
Check: Instructor scores each student individually on the soap-and-water skills checklist (minimum 8 of 10 steps performed correctly without prompting); students who do not pass on first attempt receive immediate coaching and one repeat attempt the same day.

Practice check8

Answer each question, then check it. Nothing is recorded; this is your own practice.

Infection Control
1. A nursing assistant finishes helping a patient use the bedpan. There is visible fecal matter on the assistant's hands after glove removal. Which hand hygiene method is required?
Infection Control
2. During a Glo Germ exercise, a student's UV scan shows residue consistently on the dorsal (back) surface of both hands. Which step of the CDC technique is most likely being rushed or skipped?
Infection Control
3. A nursing assistant is moving between residents in a long-term care facility. Hands are not visibly soiled. According to the WHO Five Moments for Hand Hygiene, hand hygiene is required at which of the following moments?
Infection Control
4. A patient is diagnosed with a Clostridioides difficile infection. Which statement about hand hygiene for this patient's care is correct?
Infection Control
5. When performing the final step of soap-and-water handwashing, a nursing assistant should turn off the faucet by:
Infection Control
6. When using ABHR correctly, the nursing assistant should:
Infection Control
7. A nursing assistant notices dry, cracked skin developing on both hands from frequent handwashing. The safest action is to:
Infection Control
8. During a skills competency check, a student completes 7 of 10 required soap-and-water steps correctly without prompting. What happens next according to program policy?
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