Which of the following pathogens is associated with the highest risk of seroconversion after percutaneous exposure?
Correct Answer: D
Among the listed pathogens,Hepatitis Chas thehighest risk of seroconversion following a percutaneous exposure, though it's important to note thatHepatitis Bactually has the highest overall risk. However, since Hepatitis B is not listed among the options, the correct choice from the available ones isHepatitis C. * TheAPIC Textconfirms: "The average risk of seroconversion after a percutaneous injury involving blood infected with hepatitis C virus is approximately 1.8 percent". * The other options are not bloodborne pathogens typically associated with high seroconversion risks after needlestick or percutaneous exposure: * A. Shigella- transmitted fecal-orally, not percutaneously. * B. Syphilis- transmitted sexually or via mucous membranes. * C. Hepatitis A- primarily fecal-oral transmission, low occupational seroconversion risk. References: APIC Text, 4th Edition, Chapter 103 - Occupational Exposure to Bloodborne Pathogens
Question 62
Which of the following control measures is MOST effective in preventing transmission of Legionella in healthcare water systems?
Correct Answer: B
* Maintaining hot water at 140°F (60°C) prevents Legionella growth and is the most effective control strategy. * Flushing water (A) alone is not sufficient. * Carbon filters (C) do not remove Legionella. * Routine testing (D) is not always necessary unless an outbreak occurs. CBIC Infection Control References: * APIC Text, "Waterborne Pathogens and Infection Control," Chapter 9.
Question 63
Which of the following is the correct collection technique to obtain a laboratory specimen for suspected pertussis?
Correct Answer: C
Question 64
A surgeon approaches an infection preventionist (IP) concerned that there are more surgical site infections (SSIs) in hysterectomies performed in the facility's stand-alone surgery center than in those performed in the acute-care operating room. The IP should
Correct Answer: D
The infection preventionist (IP) should start by comparing SSI rates between the acute-care operating room and the stand-alone surgery center. This direct comparison will help determine if there is a statistically significant difference in infection rates and guide further investigation. Step-by-Step Justification: * Identify Trends: * Compare SSI rates between the two locations over a set period to identify patterns. * Assess Contributing Factors: * Look at factors such as patient population, antibiotic prophylaxis, surgical techniques, environmental controls, and adherence to infection prevention protocols. * Validate Surveillance Data: * Ensure that consistent SSI surveillance methodologies are used at both locations to avoid discrepancies. Why Other Options Are Incorrect: * A. Initiate prospective surveillance for SSIs in hysterectomies performed at the stand-alone surgery center: * Prospective surveillance is beneficial but does not immediately answer the surgeon's concern about existing infections. * B. Compare the most recent post-hysterectomy SSI surveillance data from the surgery center with those of the previous 12 months: * This approach only looks at trends at the surgery center without comparing it to the acute-care setting. * C. Initiate post-hysterectomy SSI surveillance in hysterectomy patients to verify accuracy of current surveillance methodology: * This step is secondary. Before initiating new surveillance, a direct comparison should be made using existing data. CBIC Infection Control References: * APIC Text, "Surgical Site Infection Surveillance and Prevention Measures".
Question 65
A new hospital disinfectant with a 3-minute contact time has been purchased by Environmental Services. The disinfectant will be rolled out across the patient care 3-minute contact time has been purchased by Environmental Services. The disinfectant will be rolled out across the patient care areas. They are concerned about the high cost of the disinfectant. What advice can the infection preventionist provide?
Correct Answer: C
The scenario involves the introduction of a new hospital disinfectant with a 3-minute contact time, intended for use across patient care areas, but with concerns raised by Environmental Services about its high cost. The infection preventionist's advice must balance infection control efficacy with cost management, adhering to principles outlined by the Certification Board of Infection Control and Epidemiology (CBIC) and evidence- based practices. The goal is to optimize the disinfectant's use while ensuring a safe environment. Let's evaluate each option: * A. Use the new disinfectant for patient washrooms only: Limiting the disinfectant to patient washrooms focuses its use on high-touch, high-risk areas where pathogens (e.g., Clostridioides difficile, norovirus) may be prevalent. However, this approach restricts the disinfectant's application to a specific area, potentially leaving other patient care surfaces (e.g., bed rails, tables) vulnerable to contamination. While cost-saving, it does not address the broad infection control needs across all patient care areas, making it an incomplete strategy. * B. Use detergents on the floors in patient rooms: Detergents are cleaning agents that remove dirt and organic material but lack the antimicrobial properties of disinfectants. Floors in patient rooms can harbor pathogens, but they are generally considered lower-risk surfaces compared to high-touch areas (e. g., bed rails, doorknobs). Using detergents instead of the new disinfectant on floors could reduce costs but compromises infection control, as floors may still contribute to environmental transmission (e.g., via shoes or equipment). This option is not optimal given the availability of an effective disinfectant. * C. Use detergents on smooth horizontal surfaces: Smooth horizontal surfaces (e.g., tables, counters, overbed tables) are common sites for pathogen accumulation and transmission in patient rooms. Using detergents to clean these surfaces removes organic material, which is acritical first step before disinfection. If the 3-minute contact time disinfectant is reserved for high-touch or high-risk surfaces (e. g., bed rails, call buttons) where disinfection is most critical, this approach maximizes the disinfectant's efficacy while reducing its overall use and cost. This strategy aligns with CBIC guidelines, which emphasize a two-step process (cleaning followed by disinfection) and targeted use of resources, making it a practical and cost-effective recommendation. * D. Use new disinfectant for all surfaces in the patient room: Using the disinfectant on all surfaces ensures comprehensive pathogen reduction but increases consumption and cost, which is a concern for Environmental Services. While the 3-minute contact time suggests efficiency, overusing the disinfectant on low-risk surfaces (e.g., floors, walls) may not provide proportional infection control benefits and could strain the budget. This approach does not address the cost concern and is less strategic than targeting high-risk areas. The best advice is C, using detergents on smooth horizontal surfaces to handle routine cleaning, while reserving the new disinfectant for high-touch or high-risk areas where its antimicrobial action is most needed. This optimizes infection prevention, aligns with CBIC's emphasis on evidence-based environmental cleaning, and addresses the cost concern by reducing unnecessary disinfectant use. The infection preventionist should also recommend a risk assessment to identify priority surfaces for disinfectant application. : CBIC Infection Prevention and Control (IPC) Core Competency Model (updated 2023), Domain IV: Environment of Care, which advocates for targeted cleaning and disinfection based on risk. CBIC Examination Content Outline, Domain III: Prevention and Control of Infectious Diseases, which includes cost-effective use of disinfectants. CDC Guidelines for Environmental Infection Control in Healthcare Facilities (2022), which recommend cleaning with detergents followed by targeted disinfection.
