Care Scorecard › CNA › Hand hygiene

CNA exam topic: hand hygiene

39 exam-style questions with the answer and the exact rule from federal regulations or CDC guidance.

CNA training program or healthcare employer? Feature it at the top of this page — $49 for 30 days →

1. According to CDC guidance, when should a nurse aide prefer alcohol-based hand sanitizer (ABHS) over soap and water?When hands are not visibly soiled. The rule states that ABHS is preferred unless hands are visibly soiled, making option C the correct condition for preference.
   CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Unless hands are visibly soiled, ABHS is preferred over soap and water in most clinical situations”
2. A nurse aide is checking the alcohol content of a new bottle of hand sanitizer before placing it in the supply closet. What is the maximum alcohol content by volume permitted for the dispenser according to the NFPA Life Safety Code?95%. The NFPA Life Safety Code requirements listed in the rule state that the alcohol content must not exceed 95% by volume.
   CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Must not exceed 95% alcohol content by volume.”
3. What is the recommended minimum duration for rubbing hands together vigorously when washing with soap and water?At least 15 seconds. The rule instructs to rub hands together vigorously for at least 15 seconds during soap and water handwashing.
   CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Rub hands together vigorously for at least 15 seconds, covering all surfaces of the hands and fingers.”
4. According to CDC guidance, which method is specifically noted as ineffective at removing or inactivating C. difficile spores from hands compared to hand washing?Alcohol-based hand rub. The rule states that alcohol-based hand rub is ineffective against C. difficile spores when compared to hand washing.
   CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Several controlled studies have found alcohol-based hand rub to be ineffective at removing or inactivating C. difficile spores from the hands of volunteers contaminated with a known number of spores compared to hand washing.”
5. A nurse aide is washing their hands after removing gloves. Which facility feature meets the definition of 'Handwashing facilities' required by the standard?A sink with running potable water, soap, and single-use towels. The standard requires running potable water, soap, and single-use towels or air-drying machines, excluding standing water, reusable cloths, or sanitizer-only stations from this specific definition.
   29 CFR § 1910.1030(b): “Handwashing facilities means a facility providing an adequate supply of running potable water, soap, and single-use towels or air-drying machines.”
6. A nurse aide is preparing to insert an indwelling device into a resident's arm. According to CDC guidelines, when must the aide perform hand hygiene?Immediately before touching the patient. The rule lists 'Immediately before touching a patient' as a required clinical indication for hand hygiene.
   CDC — CDC's Core Infection Prevention and Control Practices for Safe Healthcare Delivery in All Settings: “Immediately before touching a patient”
7. A nurse aide notices that a resident's hands are visibly soiled with dirt and food residue. What is the required method for hand hygiene in this specific situation?Wash with soap and water. The guidelines specify that soap and water must be used when hands are visibly soiled, distinguishing this from other indications where alcohol-based rubs are acceptable.
   CDC — CDC's Core Infection Prevention and Control Practices for Safe Healthcare Delivery in All Settings: “Ensure that healthcare personnel perform hand hygiene with soap and water when hands are visibly soiled.”
8. Why does the CDC maintain a preference for alcohol-based hand sanitizer (ABHS) over soap and water for hand hygiene in most clinical situations, including C. difficile care?Studies have not shown a clear prevention benefit for soap and water, and removing ABHS risks reducing overall compliance. The rule states that ABHS is preferred because studies do not show a clear benefit for soap and water, and restricting ABHS could lower overall hand hygiene compliance.
   CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Although there is a theoretical advantage to cleaning hands with soap and water when caring for patients with CDI, CDC still indicates a preference for ABHS as studies have not shown a clear prevention benefit for soap and water and removing ABHS risks reducing hand hygiene compliance overall.”
9. After using an antiseptic hand cleanser because a sink was unavailable, what additional step is required for the nurse aide?Wash hands with soap and running water as soon as feasible. The standard mandates that even when using cleansers or towelettes, hands must eventually be washed with soap and running water.
   29 CFR § 1910.1030(d): “When antiseptic hand cleansers or towelettes are used, hands shall be washed with soap and running water as soon as feasible.”
10. When placing a new alcohol-based hand sanitizer dispenser in a healthcare facility, what is the minimum required horizontal spacing between dispensers?Not less than 48 inches. The rule states that the horizontal spacing between dispensers must be at least 48 inches.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Horizontal spacing not less than 48 inches (1,220 millimeters).”
11. A nurse aide accidentally gets blood on their forearm while caring for a resident. What is the required action for cleaning the skin?Wash the skin with soap and water immediately or as soon as feasible. The standard requires washing skin with soap and water immediately or as soon as feasible after contact with blood or potentially infectious materials.
    29 CFR § 1910.1030(d): “Employers shall ensure that employees wash hands and any other skin with soap and water, or flush mucous membranes with water immediately or as soon as feasible following contact of such body areas with blood or other potentially infectious materials.”
12. A nurse aide is caring for a resident with a suspected C. difficile infection. According to CDC guidance, which hand hygiene method should the aide use?Clean hands with soap and water. The rule specifies that soap and water cleaning is required for suspected or confirmed infections like C. difficile, overriding the general preference for ABHS.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “During the care of patients with suspected or confirmed infection during outbreaks of C. difficile and norovirus.”
13. What is the recommended duration for rubbing hands together when using alcohol-based hand sanitizer (ABHS)?Around 20 seconds. The rule specifies that rubbing hands together with ABHS should take around 20 seconds until dry.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Cover all surfaces and rub until hands feel dry. This should take around 20 seconds.”
14. When placing an alcohol-based hand sanitizer dispenser near a wall outlet or thermostat, what minimum clearance distance must the nurse aide ensure between the dispenser and the ignition source?One inch. The guidance states that there must be a one-inch distance between the dispenser and any ignition source, such as a wall outlet or thermostat.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “One-inch (25 millimeters) distance (horizontal or vertical) above, to the side, or beneath an ignition source.”
15. When installing a new refill in an automatic alcohol-based hand sanitizer dispenser, what action must the nurse aide take according to the manufacturer's instructions?Test the dispenser in accordance with the manufacturer’s care and use instructions. The rule states that the dispenser must be tested according to manufacturer instructions whenever a new refill is installed.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Be tested in accordance with the manufacturer’s care and use instructions each time a new refill is installed.”
16. A nurse aide is providing care for a patient with confirmed C. difficile infection. The aide's hands are not visibly soiled. According to CDC guidance, what is the preferred method for cleaning hands in this situation?Use alcohol-based hand sanitizer (ABHS). The rule states that ABHS is preferred over soap and water for hand cleaning in most clinical situations, including when caring for patients with C. difficile infection, provided hands are not visibly soiled.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Unless hands are visibly soiled, alcohol-based hand sanitizer (ABHS) is preferred over soap and water for cleaning hands in most clinical situations. This recommendation does not vary when caring for patients with C. difficile infection (CDI).”
17. When a patient on Contact Precautions must be transported to another area for a medically necessary procedure, what is the correct procedure for handling PPE?Remove contaminated PPE and perform hand hygiene before transporting, then don clean PPE at the destination. The guidelines require removing contaminated gear and cleaning hands before transport, then putting on fresh gear upon arrival.
    CDC — Transmission-Based Precautions: “Remove and dispose of contaminated PPE and perform hand hygiene prior to transporting patients on Contact Precautions. Don clean PPE to handle the patient at the transport location.”
18. When should a nurse aide change gloves and clean hands while caring for a single patient?When moving from work on a soiled body site to a clean body site on the same patient. The rule specifies that gloves should be changed and hands cleaned when moving from a soiled area to a clean area on the same patient to prevent cross-contamination.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “If moving from work on a soiled body site to a clean body site on the same patient or if a clinical indication for hand hygiene occurs.”
19. How should alcohol-based hand rub dispensers be installed in a long-term care facility to comply with safety standards?In a manner that adequately protects against inappropriate access. The rule requires installation methods that prevent inappropriate access to the dispensers.
    42 CFR § 483.90(a): “A long-term care facility may install alcohol-based hand rub dispensers in its facility if the dispensers are installed in a manner that adequately protects against inappropriate access.”
20. How should a nurse aide ensure an automatic hand sanitizer dispenser activates correctly for hand hygiene?Place an object within 4 inches (100 millimeters) of the sensor. The guidance specifies that activation occurs only when an object is placed within the specific distance of 4 inches from the sensor.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Any activation of the dispenser shall only occur when an object is placed within 4 inches (100 millimeters) of the sensor.”
21. When performing hand hygiene with alcohol-based hand sanitizer (ABHS), what is the recommended method for drying hands?Pat hands dry rather than rubbing them. The guidance specifies patting hands dry instead of rubbing them when using ABHS.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Patting rather than rubbing hands dry.”
22. A nurse aide is moving from cleaning a resident's soiled back area to checking their pulse on their wrist. When must the aide perform hand hygiene during this sequence?Before touching the resident's wrist after cleaning the back area. Hand hygiene is required when transitioning from a contaminated area (soiled back) to a clean area (wrist) on the same patient to prevent cross-contamination.
    CDC — CDC's Core Infection Prevention and Control Practices for Safe Healthcare Delivery in All Settings: “Before moving from work on a soiled body site to a clean body site on the same patient”
23. Why is alcohol-based hand sanitizer (ABHS) generally preferred over soap and water in most clinical situations?It is more effective at killing germs on hands than soap. The rule states that ABHS is preferred because it is more effective at killing germs compared to soap.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Is more effective at killing germs on hands than soap.”
24. During a Medicare-covered stay, a resident asks for a specific brand of moisturizing lotion and a new toothbrush. How should the nurse aide ensure these items are provided without violating billing rules?Provide the lotion and toothbrush as part of routine personal hygiene items included in the Medicare payment. The rule lists moisturizing lotion and toothbrushes as routine personal hygiene items that must be provided without additional charge during a covered stay.
    42 CFR § 483.10(f): “Routine personal hygiene items and services as required to meet the needs of residents, including, but not limited to, hair hygiene supplies, comb, brush, bath soap, disinfecting soaps or specialized cleansing agents when indicated to treat special skin problems or to fight infection, razor, shaving cream, toothbrush, toothpaste, denture adhesive, denture cleaner, dental floss, moisturizing lotion, tissues, cotton balls, cotton swabs, deodorant, incontinence care and supplies, sanitary napkins and related supplies, towels, washcloths, hospital gowns, over the counter drugs, hair and nail hygiene services, bathing assistance, and basic personal laundry.”
25. When washing hands with soap and water, what water temperature should a nurse aide use to prevent drying of the skin?Avoid using hot water. The guidance instructs aides to avoid hot water to protect skin health during handwashing.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Avoid using hot water to prevent drying of the skin.”
26. A nurse aide has just removed their gloves after assisting a resident. According to the standard, what is the required next step regarding hand hygiene?Wash hands immediately or as soon as feasible after removal of gloves. The standard mandates washing hands immediately or as soon as feasible after removing protective equipment.
    29 CFR § 1910.1030(d): “Employers shall ensure that employees wash their hands immediately or as soon as feasible after removal of gloves or other personal protective equipment.”
27. What is the correct procedure for refilling liquid soap dispensers in a healthcare facility?Do not add soap to partially empty soap dispensers. The guidance advises against topping off partially empty soap dispensers because this practice has been associated with outbreaks of pathogenic bacteria.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Soap should not be added to partially empty soap dispensers.”
28. Under what specific condition does the CDC encourage hand washing with soap and water after caring for patients with known or suspected C. difficile infections?During outbreaks of C. difficile. The rule specifies that soap and water washing is encouraged as an additional precaution specifically during outbreaks of C. difficile.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “As an additional precaution during outbreaks of C. difficile, CDC encourages hand washing with soap and water after the care of patients with known or suspected infections.”
29. A nurse aide is installing a new alcohol-based hand sanitizer dispenser in a patient's room that opens directly onto a corridor. According to the NFPA Life Safety Code requirements cited in the guidance, what is the maximum allowable volume for this dispenser?1.2 liters. The rule specifies that dispensers located in rooms, corridors, or areas open to corridors must not exceed 1.2 liters in volume.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “1.2 liters (41 ounces, 0.32 gallons) for dispensers in rooms, corridors, and areas open to corridors.”
30. When preparing hands for surgical antisepsis using an alcohol-based hand rub, what is the correct procedure regarding water temperature?Avoid hot water. The rule specifically advises avoiding hot water to promote healthy hand skin during washing.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “When washing hands, use techniques to promote healthy hand skin, such as: Avoiding hot water.”
31. Which area of the hand should a nurse aide pay specific attention to when using alcohol-based hand sanitizer because it is frequently missed?The thumbs. The rule specifically lists thumbs as an area frequently missed that requires attention during hand hygiene.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Pay attention to the areas providers frequently miss: Thumbs”
32. When performing a surgical hand scrub using antimicrobial soap, what is the recommended duration for scrubbing hands and forearms?Usually 2-6 minutes. The rule specifies that the scrub time is usually 2-6 minutes and notes that longer times like 10 minutes are not needed.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “When using an antimicrobial soap: Scrub hands and forearms for the length of time recommended by the manufacture, usually 2-6 minutes long. Scrub times like 10 minutes are not needed.”
33. A nurse aide notices their hands are visibly soiled after handling a patient's linens. What is the required method for hand hygiene in this situation?Perform hand hygiene with soap and water. The rule mandates the use of soap and water specifically when hands are visibly soiled.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Ensure that healthcare providers perform hand hygiene with soap and water when hands are visibly soiled.”
34. What is the maximum amount of alcohol-based hand sanitizer solution that should be stored outside of dispensers within a single smoke compartment?No more than 5 gallons (18.9 liters) or the amount necessary for normal maintenance, whichever is less. The rule limits storage outside dispensers to either 5 gallons or the amount needed for maintenance, choosing the smaller quantity.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “In each smoke compartment, do not store outside of dispensers more than 5 gallons (18.9 liters) or an amount of ABHS that exceeds that which is necessary for normal maintenance of the area, whichever is less.”
35. What should a nurse aide use to turn off the faucet after washing hands with soap and water?A disposable towel. The instructions specify using a disposable towel to dry hands and then using that same towel to turn off the faucet to avoid re-contamination.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Rinse hands with water and use disposable towels to dry. Use a towel to turn off the faucet.”
36. What step must be taken before applying an alcohol-based hand sanitizing solution for surgical hand antisepsis?Prewash hands and forearms with a non-antimicrobial soap and completely dry them. The instructions require prewashing with non-antimicrobial soap and ensuring hands are completely dry before applying the alcohol solution.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Before you apply the alcohol solution, prewash hands and forearms with a non-antimicrobial soap and completely dry hands and forearms.”
37. A nurse aide is working in a facility where traditional handwashing sinks are not readily accessible. According to the standard, what alternative must the employer provide for hand hygiene?An appropriate antiseptic hand cleanser in conjunction with clean cloth/paper towels or antiseptic towelettes. The rule specifies that if handwashing facilities are not feasible, the employer must provide antiseptic cleansers with towels or antiseptic towelettes.
    29 CFR § 1910.1030(d): “When provision of handwashing facilities is not feasible, the employer shall provide either an appropriate antiseptic hand cleanser in conjunction with clean cloth/paper towels or antiseptic towelettes.”
38. After removing gloves following a task, what action must the nurse aide take regarding hand hygiene?Always clean your hands after removing gloves. The guidance mandates that hand hygiene must be performed immediately after removing gloves to prevent contamination of the hands.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Always clean your hands after removing gloves.”
39. Why is it important to use antimicrobial soap rather than non-antimicrobial soap before applying alcohol-based hand rub for surgery?Rapid growth of bacteria occurs under surgical gloves with hands washed with non-antimicrobial soap. The rule states that non-antimicrobial soap leads to rapid bacterial growth under gloves, making antimicrobial soap necessary.
    CDC — Clinical Safety: Hand Hygiene for Healthcare Workers: “Rapid growth of bacteria occurs under surgical gloves with hands washed with non-antimicrobial soap. Using antimicrobial soap is important.”

Take a CNA practice test →