CDC Infection Preventionist Post Test Questions and Answers with Rationales Latest 2023

1. A nurse assistant is about to perform perineal care on an incontinent resident who wears briefs. His supplies have already been gathered and placed on the clean bedside table. He enters the room, dons’ non-sterile gloves, removes and discards the resident's soiled brief and cleans the resident's perineum. He removes his soiled gloves and dons a new pair of non-sterile gloves. He applies a clean brief. He discards his gloves and exists the room. How many times should he have performed hand hygiene in this scenario? Please select the best answer. A) 1 B) 2 C) 3 D) Hand hygiene was not required because gloves were worn. Rationale: The nurse assistant should have performed hand hygiene 3 times in this scenario. First, he should have performed hand hygiene before donning the non-sterile gloves to address the indication before touching a resident. Second, he should have performed hand hygiene after removing his first pair of gloves, before donning the second pair of gloves. This one act would address several indications: After a blood or body fluid exposure; after glove removal; and moving from a dirty task to a clean task. Third, performing hand hygiene after removing the second pair of gloves addresses the indications after glove removal and after touching the resident. (Module 7) 2. A resident is diagnosed with latent TB infection (LTBI). Is there risk that the resident will transmit TB to others in the facility? Please select the best answer. A) No, there is no risk of transmission at this time B) Yes, the resident is very likely to transmit infection to those who are immunocompromised C)No, the resident is not a risk because he/she will be placed in Airborne Precautions D)Yes, the resident is likely to transmit infection to close contacts Rationale: A resident with LTBI has M. tuberculosis in the body but does not have signs or symptoms of TB disease and cannot spread the infection to other people. Airborne Precautions are not required when caring for residents with LTBI. (Module 12b) 3. After you have scored the infection prevention and control (IPC) risk assessment, which of the following actions would you take first to address the findings? Please select the best answer. A) Develop a performance improvement effort B) Identify high-scoring items for IPC program prioritization C)Develop new (or review existing) IPC policies and procedures D)Provide education and training for staff Rationale: The first step would be to identify the high-scoring items for IPC program prioritization. Subsequent actions to address high-scoring items might include developing a performance improvement effort, developing or reviewing IPC policies and procedures, or providing education and training for staff. (Module 1) 4. As a result of lessons learned from outbreaks of multidrug-resistant organisms (MDROs) in nursing homes, which of the following situations should warrant use of Contact Precautions and consideration of a single-person room for MDRO-colonized residents? Please select all that apply. A) Residents with difficulty containing secretions from sites of MDRO colonization and potential for extensive environmental contamination B) New residents on the unit are found to be colonized with the MDRO (evidence of ongoing transmission) despite efforts to control spread C)Residents with minimal medical or nursing care needs who are able to move independently throughout the facility D)Residents receiving antibiotics Rationale: Nursing homes should implement Contact Precautions with consideration of single-person rooms for MDRO colonized residents when there is difficulty containing secretions from sites of colonization that could result in extensive environmental contamination and when there is evidence of ongoing transmission despite efforts to control spread of an MDRO. While Enhanced Barrier Precautions might be considered during high contact care activities for certain residents with risk factors, regardless of MDRO colonization status, highly independent residents or those receiving antibiotics would not warrant Contact Precautions even if MDRO colonized without those characteristics. (Module 6b) 5. At what stage of an investigation would you notify local or state public health officials that you have an outbreak? Please select the best answer A) Once an outbreak case definition has been developed B) Once an outbreak has not been controlled by infection prevention and control (IPC) measures C)Once an outbreak has been determined to exist D)Once an outbreak has been evaluated and summarized in a written report Rationale: A facility should notify local or state public health officials as soon as an outbreak has been determined to exist. (Module 5) 6. Before performing wound care, if the hands are not visibly soiled, which method of hand hygiene by staff members is preferred? Please select the best answer. A) Using an alcohol-based hand rub B) Washing hands with soap and water, followed immediately by use of an alcohol-based hand rub C)None. Since gloves should be worn when performing wound care, hand hygiene is not necessary D)None of the above Rationale: Alcohol-based hand rub is the preferred method of hand hygiene in most clinical situations, including this scenario. Soap and water should be used if hands are visibly soiled. If hand hygiene is performed with soap and water, it is not necessary to then immediately use an alcohol-based hand rub. Hand hygiene should be performed before touching a resident, even if gloves will be worn. (Module 7) 7. During January, there were five residents with central venous catheters (CVCs) for a total of 100 catheter-days. There were 4,000 resident-days for the month. There were two central lineassociated blood stream infections (CLABSIs) identified. What is the CLABSI rate for the month? Please select the best answer. A) 1.3 CLABSI per 1,000 resident-days B) 2 CLABSI per 1,000 catheter-days C) 5 CLABSI per 1,000 resident-days D) 20 CLABSI per 1,000 catheter-days Rationale: When calculating an infe