Infection Control - National Physical Therapy Examination NPTE
- Which equipment category requires high-level disinfection: items contacting mucous membranes?
- Semicritical items. These items contact non-sterile mucous membranes, requiring high-level disinfection to destroy vegetative bacteria, viruses, fungi, and some spores.
- Which infection control action is required before and after every patient contact, even with gloves?
- Perform hand hygiene. Gloves do not substitute for hand hygiene, as they can harbor pathogens or become contaminated, requiring cleaning to prevent cross-transmission.
- Which transmission-based precaution requires a private room and dedicated equipment when possible?
- Contact precautions. This precaution minimizes direct and indirect contact transmission by isolating the patient and using dedicated items to avoid sharing contaminated equipment.
- Which term means elimination of most pathogenic organisms on inanimate objects, not spores?
- Disinfection. This process reduces microbial load on surfaces but does not guarantee spore elimination, suitable for non-critical items in healthcare environments.
- Which term means reduction of microbial load on skin, for example before an injection?
- Antisepsis. Applying antimicrobial agents to living tissue inhibits microbial growth, preventing infection at sites like injection areas or wounds.
- Which isolation category is required for tuberculosis, measles, and varicella?
- Airborne precautions. These diseases spread via small particles that remain suspended in air, requiring specialized precautions to contain infectious aerosols.
- Which pathogen is classically associated with contact precautions and soap-and-water handwashing?
- Clostridioides difficile. This spore-forming bacterium resists alcohol-based sanitizers, necessitating contact precautions and soap-and-water washing for effective spore removal.
- Which isolation category is required for influenza, meningococcal disease, and pertussis?
- Droplet precautions. These infections transmit through large respiratory droplets that travel short distances, necessitating barriers to prevent close-range spread.
- Which type of equipment requires sterilization: items that enter sterile tissue or the vascular system?
- Critical items. These items pose high infection risk if contaminated, necessitating sterilization to eliminate all microbes before penetrating sterile body areas.
- Which isolation category is required for C. difficile and norovirus?
- Contact precautions. These pathogens spread via direct or indirect contact with contaminated surfaces or feces, requiring barriers to prevent transmission through touch.
- What is the single most effective action to prevent transmission of infection in clinical care?
- Hand hygiene. Proper hand cleaning disrupts the chain of infection by removing transient microorganisms that can transfer between patients and healthcare workers.
- What is the required action if hands are visibly soiled before patient contact?
- Wash with soap and water. Visible soil harbors microorganisms and interferes with sanitizer efficacy, requiring physical removal to ensure effective decontamination before patient interaction.
- What is the best first action after a needlestick or blood exposure to intact skin?
- Immediately wash/flush the exposed area. Prompt washing removes infectious material from the exposure site, reducing the risk of pathogen absorption or entry through skin or wounds.
- Which PPE is essential for droplet precautions during close patient contact?
- Surgical mask (plus eye protection if splash risk). A surgical mask blocks large droplets from reaching the mouth and nose, with eye protection added to shield against potential splashes during patient interactions.
- What is the next required step after immediate cleansing following an occupational blood exposure?
- Report immediately and follow post-exposure protocol. Immediate reporting enables timely medical evaluation, prophylaxis if needed, and documentation to manage potential bloodborne pathogen transmission risks.
- What is the correct order for donning PPE: gown, mask/respirator, eye protection, gloves?
- Gown → mask/respirator → eye protection → gloves. Donning in this sequence ensures clean hands tie the gown, secure respiratory protection, add eye barriers, and finally cover hands to prevent contamination.
- Which equipment category requires low-level disinfection: items contacting intact skin only?
- Noncritical items. These items only touch intact skin, which acts as a barrier, so low-level disinfection suffices to reduce surface pathogens adequately.
- What is the correct action if you touch a contaminated surface while wearing gloves during care?
- Remove gloves, perform hand hygiene, and don new gloves. Changing gloves after contamination prevents transferring pathogens to the patient or other surfaces, with hand hygiene ensuring clean hands for new PPE.
- Which mask is required for airborne precautions when entering the patient room?
- Fit-tested N95 respirator (or higher-level respirator). This respirator filters at least 95% of airborne particles, providing necessary protection against inhalation of infectious aerosols in airborne isolation.
- Which term describes removal of visible soil and organic material before disinfection?
- Cleaning. Removing gross contamination first enhances the effectiveness of subsequent disinfection or sterilization by eliminating barriers to antimicrobial agents.
- Which infection control term means complete elimination of all microbial life, including spores?
- Sterilization. This process uses heat, chemicals, or radiation to destroy all viable microbes and spores, ensuring items are safe for invasive procedures.
- Which infection control approach assumes all blood and body fluids are potentially infectious?
- Standard Precautions. This approach treats all human blood and certain body fluids as if they contain infectious pathogens to minimize transmission risks in healthcare settings.
- Which hand hygiene method is preferred after caring for a patient with suspected C. difficile?
- Soap and water. Alcohol-based sanitizers do not eliminate C. difficile spores, making mechanical removal with soap and water essential to prevent transmission.
- Identify the best room placement for a patient on airborne precautions when available.
- Airborne infection isolation room (negative pressure). Negative pressure ventilation prevents airborne pathogens from escaping the room, directing air flow inward and filtering exhaust to contain infection.