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| Section | Weight | Objectives |
|---|---|---|
| Preventing/Controlling the Transmission of Infectious Agents | 17-19% | |
| Management and Communication | 10-13% | |
| Identification of Infectious Disease Processes | 17-19% | |
| Cleaning, Sterilization, Disinfection, Asepsis | 10-13% | |
| Employee/Occupational Health | 10-13% | |
| Surveillance and Epidemiologic Investigation | 22-26% | |
| Environment of Care | 10-13% | |
| Education and Research | 6-9% |
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質問 # 73
The infection preventionist observes a nurse obtaining a wound culture and notes which of the following steps is correct?
正解:D
解説:
The CBIC Certified Infection Control Exam Study Guide (6th edition) emphasizes that aseptic technique is essential when obtaining clinical specimens, including wound cultures, to ensure accurate results and prevent contamination. Using aseptic technique minimizes the introduction of skin flora or environmental microorganisms that could lead to false-positive cultures and inappropriate clinical management.
Correct wound culture collection includes cleansing the wound as indicated, using sterile equipment, and avoiding contact with surrounding skin or nonsterile surfaces. This approach ensures that organisms identified in the culture are representative of true pathogens rather than contaminants. Proper specimen collection is a foundational infection prevention practice and directly affects diagnostic accuracy, antimicrobial stewardship, and patient outcomes.
Option A is incorrect because wound specimens are typically transported promptly at room temperature; refrigeration is not routinely recommended and may compromise certain organisms. Option C is incorrect because specimen containers must be labeled with at least two patient identifiers (such as full name and medical record number), not initials alone, to meet patient safety standards. Option D is incorrect because specimens should be obtained before initiation of antibiotic therapy whenever possible, as antibiotics can suppress bacterial growth and lead to false-negative results.
For CIC exam preparation, it is critical to recognize that aseptic technique during specimen collection is the key correct practice, ensuring reliable laboratory results and supporting effective infection prevention and control efforts.
質問 # 74
An infection preventionist is educating healthcare personnel on standard precautions and isolation requirements. Sessions consist of large group lectures and demonstrations. Three months later, a carbapenem- resistant Enterobacterales (CRE) outbreak occurs. Which of the following strategies will minimize the risk of a subsequent outbreak?
正解:C
解説:
The Certification Study Guide (6th edition) stresses that education alone is insufficient to ensure sustained adherence to infection prevention practices. While lectures and demonstrations are valuable for knowledge dissemination, they do not guarantee consistent behavioral compliance over time. In this scenario, the occurrence of a CRE outbreak three months after education indicates a gap between knowledge and practice.
To minimize the risk of a subsequent outbreak, the most effective strategy is directly assessing staff compliance with isolation precautions, which is best accomplished by engaging managers and leadership. The study guide emphasizes the importance of monitoring, auditing, and feedback as core components of an effective infection prevention program. Managers are uniquely positioned to observe daily practice, reinforce expectations, and hold staff accountable for adherence to standard and transmission-based precautions.
The other options focus primarily on educational reinforcement rather than practice validation. Updating content, testing knowledge, or offering recorded lectures may improve awareness but do not address whether staff are actually implementing precautions correctly at the point of care. CRE transmission is most often linked to failures in hand hygiene, contact precautions, and environmental cleaning-issues that require ongoing observation and performance management, not passive education.
This question reflects a common CIC exam theme: preventing outbreaks requires behavioral verification and leadership engagement, not education alone. By assessing and reinforcing compliance through managers, the infection preventionist addresses the root cause of transmission risk and supports sustainable prevention.
Reference: Certification Study Guide (CBIC/CIC Exam Study Guide), 6th edition, Chapter 7: Management and Communication; Chapter 8: Education and Research.
質問 # 75
Some pathogens live in the body and can be cultured, but do NOT elicit any response from the body's defense mechanisms. This state is called:
正解:B
解説:
The interaction between pathogens and the human body can take various forms, each with distinct immunological and clinical implications. The Certification Board of Infection Control and Epidemiology (CBIC) emphasizes understanding these states within the "Identification of Infectious Disease Processes" domain to guide infection prevention strategies. The question describes a scenario where pathogens are present, can be cultured (indicating viable organisms), but do not trigger a response from the body's defense mechanisms, such as inflammation or immune activation. This requires identifying the appropriate microbiological state.
Option A, "Colonization," is the correct answer. Colonization occurs when microorganisms are present on or in the body (e.g., skin, mucous membranes, or gut) without causing harm or eliciting an immune response.
These pathogens can be cultured, as they are alive and replicating, but they exist in a commensal or symbiotic relationship with the host, not provoking symptoms or defense mechanisms. Examples include normal flora like Staphylococcus epidermidis on the skin or Streptococcus salivarius in the oral cavity. The Centers for Disease Control and Prevention (CDC) defines colonization as the presence of microbes without tissue invasion or damage, distinguishing it from infection (CDC, "Principles of Epidemiology in Public Health Practice," 3rd Edition, 2012).
Option B, "Infection," is incorrect because it involves the invasion and multiplication of pathogens in body tissues, leading to an immune response, such as inflammation, fever, or antibody production. This contrasts with the question's description of no defense mechanism response. Option C, "Latency," refers to a state where a pathogen (e.g., herpes simplex virus or Mycobacterium tuberculosis) remains dormant in the body after initial infection, capable of reactivation but not eliciting an active immune response during dormancy.
However, latency implies a prior infection with a latent phase, whereas the question suggests a current, non- responsive state without prior infection context. Option D, "Contamination," describes the unintended presence of pathogens on inanimate objects or surfaces (e.g., medical equipment), not within the body, and does not align with the scenario of living, culturable pathogens in a host.
The CBIC Practice Analysis (2022) and CDC guidelines highlight colonization as a key concept in infection control, particularly in settings like hospitals where colonized patients can serve as reservoirs for potential infections. The absence of an immune response, as specified, aligns with the definition of colonization, making Option A the most accurate answer.
References:
* CBIC Practice Analysis, 2022.
* CDC Principles of Epidemiology in Public Health Practice, 3rd Edition, 2012.
質問 # 76
A task force formed to focus on Clostridioides difficile infections (CDIs). The topic of the meeting discussed selecting the correct germicidal wipe. What important factor does the infection preventionist review?
正解:B
解説:
The correct answer is C, "Time the surface remains wet," as this is the most important factor the infection preventionist (IP) should review when selecting a germicidal wipe for controlling Clostridioides difficile infections (CDIs). According to the Certification Board of Infection Control and Epidemiology (CBIC) guidelines, effective environmental cleaning is a critical component of infection prevention, particularly for pathogens like C. difficile, which forms hardy spores that are resistant to many disinfectants. The efficacy of a germicidal wipe depends on the contact time-the duration the surface must remain wet with the disinfectant to ensure the killing of C. difficile spores. This is specified by the manufacturer and supported by guidelines from the Centers for Disease Control and Prevention (CDC) and the Environmental Protection Agency (EPA), which emphasize that the disinfectant must remain wet on the surface for the full recommended contact time (typically 1-10 minutes for sporicidal agents) to achieve the desired level of disinfection (CBIC Practice Analysis, 2022, Domain III: Infection Prevention and Control, Competency 3.4 - Implement environmental cleaning and disinfection protocols).
Option A (cost of a case of wipes) is a practical consideration for budgeting but is secondary to efficacy in infection control, especially for a high-priority pathogen like C. difficile. Option B (size of individual wipes) may affect coverage and convenience but does not directly impact the wipe's ability to eliminate the pathogen. Option D (correct disposal of the wipe) is important for preventing cross-contamination and ensuring compliance with waste management protocols, but it is a procedural step after use and not the primary factor in selecting the wipe.
The IP's review of contact time aligns with CBIC's focus on evidence-based practices to prevent healthcare- associated infections (HAIs). For C. difficile, which is a leading cause of HAIs, selecting a wipe with an appropriate sporicidal agent and ensuring adequate wet contact time is essential to disrupt transmission, particularly in outbreak settings (CDC Guidelines for Environmental Infection Control in Healthcare Facilities, 2019). This factor directly influences the wipe's effectiveness, making it the critical review point for the task force.
References: CBIC Practice Analysis, 2022, Domain III: Infection Prevention and Control, Competency 3.4 - Implement environmental cleaning and disinfection protocols. CDC Guidelines for Environmental Infection Control in Healthcare Facilities, 2019.
質問 # 77
A patient with meningococcal meningitis experiences cardiac arrest. A nurse administers mouth-to-mouth breathing during CPR. Which of the following actions should the nurse take immediately?
正解:A
解説:
The CBIC Certified Infection Control Exam Study Guide (6th edition) identifies Neisseria meningitidis as a highly transmissible organism spread through respiratory droplets and direct contact with oral secretions.
Healthcare personnel who have unprotected, close exposure-such as mouth-to-mouth resuscitation-to a patient with meningococcal meningitis are considered high-risk contacts.
In this scenario, the nurse had direct exposure to respiratory secretions during CPR, which constitutes a significant risk for transmission. The Study Guide emphasizes that postexposure chemoprophylaxis is indicated as soon as possible, ideally within 24 hours of exposure, to prevent invasive meningococcal disease.
Recommended prophylactic agents include rifampin, ciprofloxacin, or ceftriaxone, depending on contraindications and institutional protocols.
Option A is incorrect because chlorhexidine oral rinse does not eliminate systemic infection risk. Option B is inappropriate because quarantine is not required for exposed healthcare workers who receive appropriate prophylaxis. Option D is insufficient, as monitoring alone does not adequately reduce the risk of developing disease following high-risk exposure.
Rapid initiation of chemoprophylaxis is a critical infection prevention intervention and a high-yield CIC exam concept. Early action protects the exposed healthcare worker and prevents secondary transmission within the healthcare setting.
質問 # 78
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