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| Section | Weight | Objectives |
|---|---|---|
| Education and Research | 6-9% | |
| Identification of Infectious Disease Processes | 17-19% | |
| Management and Communication | 10-13% | |
| Employee/Occupational Health | 10-13% | |
| Surveillance and Epidemiologic Investigation | 22-26% | |
| Environment of Care | 10-13% | |
| Preventing/Controlling the Transmission of Infectious Agents | 17-19% | |
| Cleaning, Sterilization, Disinfection, Asepsis | 10-13% |
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質問 # 294
Which of the following options describes a best practice for avoiding occupational health hazards in a healthcare facility?
正解：C
解説：
The Certification Study Guide (6th edition) emphasizes that occupational health hazard prevention is based on risk assessment and targeted protection strategies, particularly for personnel with predictable, high-risk exposures. Providing pre-exposure vaccination against Neisseria meningitidis to laboratory personnel is a recognized best practice because laboratorians who routinely handle N. meningitidis isolates are at increased risk for aerosol or droplet exposure, which can result in rapidly progressive and potentially fatal disease.
The study guide highlights that pre-exposure immunization is preferred over post-exposure management when exposure risk is ongoing and well defined. This strategy aligns with evidence-based occupational health principles and recommendations from public health authorities, making it a proactive and preventive measure rather than a reactive one.
The other options are incorrect because they either reflect outdated practices or inappropriate control measures. Routine annual TB testing is no longer universally required and should be based on facility risk assessment. Post-vaccination varicella serologic testing is not recommended because commercial assays may not reliably detect vaccine-induced immunity. Excluding asymptomatic pertussis-exposed healthcare personnel from duty is not routinely recommended if appropriate prophylaxis is provided.
This question reflects a common CIC exam theme: best practices focus on targeted, evidence-based prevention, especially vaccination strategies for high-risk occupational groups.
Reference: Certification Study Guide (CBIC/CIC Exam Study Guide), 6th edition, Chapter 6: Employee
/Occupational Health.
質問 # 295
An infection preventionist is reviewing a wound culture result on a surgery patient. The abdominal wound culture of purulent drainage grew Staphylococcus aureus with the following sensitivity pattern: resistant to penicillin, oxacillin, cephalothin, and erythromycin; susceptible to clindamycin, and vancomycin. The patient is currently being treated with cefazolin. Which of the following is true?
正解：D
解説：
The scenario involves a surgical patient with a purulent abdominal wound culture growing Staphylococcus aureus, a common pathogen in surgical site infections (SSIs). The Certification Board of Infection Control and Epidemiology (CBIC) emphasizes accurate interpretation of culture results and antibiotic therapy in the
"Identification of Infectious Disease Processes" and "Prevention and Control of Infectious Diseases" domains, aligning with the Centers for Disease Control and Prevention (CDC) guidelines for managing SSIs. The question requires assessing the sensitivity pattern and current treatment to determine the correct statement.
Option B, "The current therapy is not effective," is true. The wound culture shows Staphylococcus aureus resistant to oxacillin, indicating methicillin-resistant S. aureus (MRSA). The sensitivity pattern lists resistance to penicillin, oxacillin, cephalothin, and erythromycin, with susceptibility to clindamycin and vancomycin.
Cefazolin, a first-generation cephalosporin, is ineffective against MRSA because resistance to oxacillin (a penicillinase-resistant penicillin) implies cross-resistance to cephalosporins like cefazolin due to altered penicillin-binding proteins (PBPs). The CDC's "Guidelines for the Prevention of Surgical Site Infections" (2017) and the Clinical and Laboratory Standards Institute (CLSI) standards confirm that MRSA strains are not susceptible to cefazolin, meaning the current therapy is inappropriate and unlikely to resolve the infection, supporting Option B.
Option A, "The wound is not infected," is incorrect. The presence of purulent drainage, a clinical sign of infection, combined with a positive culture for S. aureus, confirms an active wound infection. The CBIC and CDC define purulent discharge as a key indicator of SSI, ruling out this statement. Option C, "Droplet Precautions should be initiated," is not applicable. Droplet Precautions are recommended for pathogens transmitted via respiratory droplets (e.g., influenza, pertussis), not for S. aureus, which is primarily spread by contact. The CDC's "Guideline for Isolation Precautions" (2007) specifies Contact Precautions for MRSA, not Droplet Precautions, making this false. Option D, "This is a methicillin-sensitive S. aureus (MSSA) strain," is incorrect. Methicillin sensitivity is determined by susceptibility to oxacillin, and the resistance to oxacillin in the culture result classifies this as MRSA, not MSSA. The CDC and CLSI use oxacillin resistance as the defining criterion for MRSA.
The CBIC Practice Analysis (2022) and CDC guidelines stress the importance of aligning antimicrobial therapy with sensitivity patterns to optimize treatment outcomes. The mismatch between cefazolin and the MRSA sensitivity profile confirms that Option B is the correct statement, indicating ineffective current therapy.
References:
* CBIC Practice Analysis, 2022.
* CDC Guidelines for the Prevention of Surgical Site Infections, 2017.
* CDC Guideline for Isolation Precautions, 2007.
* CLSI Performance Standards for Antimicrobial Susceptibility Testing, 2022.
質問 # 296
An infection preventionist is evaluating a new catheter that may decrease the rate of catheter-associated urinary tract infections. Which of the following provides the BEST information to support the selection of this catheter?
正解：B
解説：
The correct answer is D, "Cost benefit analysis and safety considerations," as this provides the best information to support the selection of a new catheter aimed at decreasing the rate of catheter-associated urinary tract infections (CAUTIs). According to the Certification Board of Infection Control and Epidemiology (CBIC) guidelines, selecting medical devices like catheters for infection prevention involves a comprehensive evaluation that balances efficacy, safety, and economic impact. A cost-benefit analysis assesses the financial implications (e.g., reduced infection rates leading to lower treatment costs) against the cost of the new catheter, while safety considerations ensure the device minimizes patient risk, such as reducing biofilm formation or irritation that contributes to CAUTIs (CBIC Practice Analysis, 2022, Domain III: Infection Prevention and Control, Competency 3.3 - Ensure safe reprocessing of medical equipment). This dual focus provides evidence-based data to justify the catheter's adoption, aligning with the goal of improving patient outcomes and reducing healthcare-associated infections (HAIs).
Option A (staff member preference and product availability) is subjective and logistical rather than evidence- based, making it insufficient for a decision that impacts infection rates. Option B (product materials and vendor information) offers technical details but lacks the broader context of efficacy and cost-effectiveness needed for a comprehensive evaluation. Option C (value analysis and information provided by the manufacturer) includes a structured assessment of value, but it may be biased toward the manufacturer's claims and lacks the independent safety and cost-benefit perspective critical for infection prevention decisions.
The emphasis on cost-benefit analysis and safety considerations reflects CBIC's priority on using data-driven and patient-centered approaches to select interventions that enhance infection control (CBIC Practice Analysis, 2022, Domain II: Surveillance and Epidemiologic Investigation, Competency 2.5 - Use data to guide infection prevention and control strategies). This approach ensures the catheter's selection is supported by robust evidence, optimizing both clinical and economic outcomes in the prevention of CAUTIs.
References: CBIC Practice Analysis, 2022, Domain II: Surveillance and Epidemiologic Investigation, Competency 2.5 - Use data to guide infection prevention and control strategies; Domain III: Infection Prevention and Control, Competency 3.3 - Ensure safe reprocessing of medical equipment.
質問 # 297
Which of the following is an essential element of practice when sending biohazardous samples from one location to another?
正解：C
解説：
The safe transport of biohazardous samples, such as infectious agents, clinical specimens, or diagnostic materials, is a critical aspect of infection prevention and control to prevent exposure and environmental contamination. The Certification Board of Infection Control and Epidemiology (CBIC) emphasizes adherence to regulatory and safety standards in the "Prevention and Control of Infectious Diseases" domain, which includes proper handling and shipping of biohazardous materials. The primary guideline governing this practice is the U.S. Department of Transportation (DOT) Hazardous Materials Regulations (HMR) and the International Air Transport Association (IATA) Dangerous Goods Regulations, which align with global biosafety standards.
Option A, "Ship using triple-containment packaging," is the essential element of practice. Triple-containment packaging involves three layers: a primary watertight container holding the sample, a secondary leak-proof container with absorbent material, and an outer rigid packaging (e.g., a box) that meets shipping regulations.
This system ensures that biohazardous materials remain secure during transport, preventing leaks or breaches that could expose handlers or the public. The CDC and WHO endorse this method as a fundamental requirement for shipping Category A (high-risk) and Category B (moderate-risk) infectious substances, making it the cornerstone of safe transport practice.
Option B, "Electronically log and send via overnight delivery," is a useful administrative and logistical step to track shipments and ensure timely delivery, but it is not the essential element. While documentation and rapid delivery are important for maintaining chain of custody and sample integrity, they are secondary to the physical containment provided by triple packaging. Option C, "Transport by an authorized biohazard transporter," is a necessary step to comply with regulations, as only trained and certified transporters can handle biohazardous materials. However, this is contingent on proper packaging; without triple containment, transport authorization alone is insufficient. Option D, "Store in a cooler that is labeled as a health hazard," may be part of preparation (e.g., maintaining sample temperature), but labeling alone does not address the containment or transport safety required during shipment. Coolers are often used, but the focus on labeling as a health hazard is incomplete without the triple-containment structure.
The CBIC Practice Analysis (2022) supports compliance with federal and international shipping regulations, which prioritize triple-containment packaging as the foundational practice to mitigate risks. The CDC's Biosafety in Microbiological and Biomedical Laboratories (BMBL, 6th Edition, 2020) and IATA guidelines further specify that triple packaging is mandatory for all biohazardous shipments, reinforcing Option A as the correct answer.
References:
* CBIC Practice Analysis, 2022.
* CDC Biosafety in Microbiological and Biomedical Laboratories (BMBL), 6th Edition, 2020.
* U.S. DOT Hazardous Materials Regulations (49 CFR Parts 171-180).
* IATA Dangerous Goods Regulations, 2023.
質問 # 298
What is the correct order of steps for reprocessing critical medical equipment?
正解：A
解説：
The correct answer is D, "Clean, sterilize," as this represents the correct order of steps for reprocessing critical medical equipment. According to the Certification Board of Infection Control and Epidemiology (CBIC) guidelines, critical medical equipment-items that enter sterile tissues or the vascular system (e.g., surgical instruments, implants)-must undergo a rigorous reprocessing cycle to ensure they are free of all microorganisms, including spores. The process begins with cleaning to remove organic material, debris, and soil, which is essential to allow subsequent sterilization to be effective. Sterilization, the final step, uses methods such as steam, ethylene oxide, or hydrogen peroxide gas to achieve a sterility assurance level (SAL) of 10##, eliminating all microbial life (CBIC Practice Analysis, 2022, Domain III: Infection Prevention and Control, Competency 3.3 - Ensure safe reprocessing of medical equipment). Disinfection, while important for semi-critical devices, is not a step in the reprocessing of critical items, as it does not achieve the sterility required; it is a separate process for non-critical or semi-critical equipment.
Option A (clean, sterilize, disinfect) is incorrect because disinfecting after sterilization is unnecessary and redundant, as sterilization already achieves a higher level of microbial kill. Option B (disinfect, clean, sterilize) reverses the logical sequence; cleaning must precede any disinfection or sterilization to remove bioburden, and disinfection is not appropriate for critical items. Option C (disinfect, sterilize) omits cleaning and incorrectly prioritizes disinfection, which is insufficient for critical equipment requiring full sterility.
The focus on cleaning followed by sterilization aligns with CBIC's emphasis on evidence-based reprocessing protocols to prevent healthcare-associated infections (HAIs), ensuring that critical equipment is safe for patient use (CBIC Practice Analysis, 2022, Domain III: Infection Prevention and Control, Competency 3.4 - Implement environmental cleaning and disinfection protocols). This sequence is supported by standards such as AAMI ST79, which outlines the mandatory cleaning step before sterilization to ensure efficacy and safety.
References: CBIC Practice Analysis, 2022, Domain III: Infection Prevention and Control, Competencies 3.3 - Ensure safe reprocessing of medical equipment, 3.4 - Implement environmental cleaning and disinfection protocols. AAMI ST79:2017, Comprehensive guide to steam sterilization and sterility assurance in health care facilities.
質問 # 299
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