PROPHECY ASSESSMENTS CORE MANDATORY PART II |
Attempt Score 100% Solutions Guide | Complete Q&A | Pass
Guaranteed - A+ Graded
Aligned with 2026/2027 Joint Commission Hospital Accreditation Standards,
OSHA Advanced Directives, & CMS Emergency Preparedness Final Rule
[Section 1: Advanced Infection Control & Emerging Pathogens
(Questions 1-10)]
Multi-Drug Resistant Organisms (MRSA, VRE, CRE, C. Auris) | Emerging Infectious Diseases
(Mpox, Ebola) | Sterilization vs Disinfection Levels | Airborne Infection Isolation Rooms
(AIIR)
Q1. A patient admitted from a long-term acute care facility (LTAC) with
mechanical ventilation history is being screened for Candida auris colonization
per CDC guidance. Which specimen collection method and anatomical sites are
CORRECT?
A. Single nasal swab from anterior nares only
B. Bilateral axilla and groin composite swab
C. Rectal swab using Copan Transystem dual swab
D. Throat and perirectal swab combination
Correct Answer: B. Bilateral axilla and groin composite swab [CORRECT]
Rationale: CDC recommends using a composite swab of the patient's bilateral axilla and
groin for C. auris colonization screening, with real-time PCR as the preferred testing
method . Option A is incorrect because nasal swabs are used for MRSA screening, not C.
auris. Option C describes the correct method for carbapenemase-producing organism
(CPO) rectal screening, not C. auris. Option D is incorrect because throat swabs are not
recommended for C. auris detection. Prophecy Part II Testing Insight: This question
,tests the critical distinction between MDRO screening protocols—C. auris requires skin
swabs (axilla/groin) while CRE/CPO requires rectal screening. Regulatory Citation:
CDC C. auris Screening Recommendations for Healthcare Facilities (Dec 2025).
Q2. A hospitalized patient with confirmed carbapenem-resistant Enterobacterales
(CRE) infection has completed antibiotic therapy and is clinically improved. The
infection prevention team is evaluating whether contact precautions can be
discontinued. According to current CDC and SHEA guidance, which criteria MUST
be met?
A. Clinical improvement alone with physician documentation
B. Single negative rectal culture 48 hours after antibiotics completed
C. At least 6 months since last positive culture AND 2 consecutive negative rectal swabs
at least 1 week apart while off antibiotics 7-10 days
D. Three negative cultures obtained daily for 3 consecutive days
Correct Answer: C. At least 6 months since last positive culture AND 2 consecutive
negative rectal swabs at least 1 week apart while off antibiotics 7-10 days
[CORRECT]
Rationale: CDC states there is insufficient evidence for firm discontinuation
recommendations, but CRE colonization can be prolonged (>6 months) . SHEA expert
guidance recommends discontinuation only if: ≥6 months elapsed since last positive
culture, patient is off antibiotics 7-10 days, and at least 2 consecutive negative rectal
swabs are obtained ≥1 week apart . Option A is the classic Prophecy trap—clinical
improvement alone is NEVER sufficient for MDRO discontinuation. Option B fails on
multiple criteria (single culture, insufficient timeframe, no antibiotic washout). Option
D's daily testing is not supported by evidence and may yield false negatives due to
intermittent shedding. Prophecy Part II Testing Insight: The exam consistently tests
whether you know that MDRO discontinuation requires microbiologic clearance, not
just clinical improvement. Regulatory Citation: CDC CRE Toolkit; SHEA Expert
Guidance on Duration of Contact Precautions (2017).
,Q3. During terminal cleaning of a patient room previously occupied by a patient
with Candida auris, which disinfectant and contact time combination is REQUIRED
for effective environmental decontamination?
A. Quaternary ammonium compound (QAC) with 1-minute contact time
B. EPA-registered hospital disinfectant with sporicidal claim and 5-minute contact time
C. 70% isopropyl alcohol with 30-second contact time
D. Chlorine bleach solution (1000 ppm) with 1-minute contact time
Correct Answer: B. EPA-registered hospital disinfectant with sporicidal claim and
5-minute contact time [CORRECT]
Rationale: C. auris is resistant to many standard disinfectants including QACs and
alcohol. CDC recommends using an EPA-registered hospital disinfectant effective
against C. auris (List K) with adequate contact time—typically sporicidal agents such as
hydrogen peroxide or bleach solutions with extended contact times . Option A is
incorrect because QACs are ineffective against C. auris. Option C is incorrect because
alcohol has poor efficacy against fungal spores and biofilms. Option D's concentration
and contact time are insufficient; EPA List K products require specific contact times
(often 5 minutes or more). Prophecy Part II Testing Insight: This tests knowledge that
C. auris requires sporicidal-level disinfection, not standard hospital disinfectants.
Regulatory Citation: CDC Environmental Cleaning Guidance for C. auris.
Q4. A patient with suspected Mpox (Clade I) presents to the emergency
department with vesicular lesions and fever. According to CDC isolation
guidelines, which transmission-based precautions are REQUIRED?
A. Standard Precautions only
B. Contact Precautions only
C. Contact Precautions plus Airborne Precautions (N95 respirator)
D. Droplet Precautions plus Contact Precautions
Correct Answer: C. Contact Precautions plus Airborne Precautions (N95
respirator) [CORRECT]
Rationale: Mpox (Clade I) requires both Contact Precautions (gown, gloves) AND
Airborne Precautions (N95 or higher-level respirator) due to potential for airborne
, transmission during procedures that generate aerosols and theoretical risk of
respiratory droplet transmission. Standard Precautions alone (Option A) are insufficient
for suspected Mpox. Contact Precautions only (Option B) misses the airborne
component required for Clade I. Droplet Precautions (Option D) are insufficient as Mpox
requires airborne-level respiratory protection. Prophecy Part II Testing Insight: The
exam tests whether you distinguish between Clade I (more virulent, airborne added)
and Clade II protocols, and whether you default to the highest level of precaution when
uncertain. Regulatory Citation: CDC Mpox Infection Control Guidance (2024-2025
updates).
Q5. Which level of disinfection is REQUIRED for semi-critical items such as
endoscopes, respiratory therapy equipment, and anesthesia breathing circuits?
A. Low-level disinfection (kills most bacteria, some viruses, not mycobacteria or spores)
B. Intermediate-level disinfection (kills mycobacteria, most viruses, not spores)
C. High-level disinfection (kills all microorganisms except high numbers of bacterial
spores)
D. Sterilization (kills all microbial life including bacterial spores)
Correct Answer: C. High-level disinfection (kills all microorganisms except high
numbers of bacterial spores) [CORRECT]
Rationale: Semi-critical items contact mucous membranes or non-intact skin and
require high-level disinfection (HLD) per Spaulding classification. HLD destroys all
microorganisms except high numbers of bacterial endospores. Option A (low-level) is
for non-critical items contacting intact skin. Option B (intermediate-level) is insufficient
for semi-critical items. Option D (sterilization) is required for critical items (surgical
instruments, implants) but is not required for semi-critical items unless specifically
indicated. Prophecy Part II Testing Insight: The exam frequently tests the Spaulding
classification hierarchy—know that semi-critical = HLD, critical = sterilization, non-
critical = low/intermediate level. Regulatory Citation: CDC Guideline for Disinfection
and Sterilization in Healthcare Facilities (2008, reaffirmed 2023).
Attempt Score 100% Solutions Guide | Complete Q&A | Pass
Guaranteed - A+ Graded
Aligned with 2026/2027 Joint Commission Hospital Accreditation Standards,
OSHA Advanced Directives, & CMS Emergency Preparedness Final Rule
[Section 1: Advanced Infection Control & Emerging Pathogens
(Questions 1-10)]
Multi-Drug Resistant Organisms (MRSA, VRE, CRE, C. Auris) | Emerging Infectious Diseases
(Mpox, Ebola) | Sterilization vs Disinfection Levels | Airborne Infection Isolation Rooms
(AIIR)
Q1. A patient admitted from a long-term acute care facility (LTAC) with
mechanical ventilation history is being screened for Candida auris colonization
per CDC guidance. Which specimen collection method and anatomical sites are
CORRECT?
A. Single nasal swab from anterior nares only
B. Bilateral axilla and groin composite swab
C. Rectal swab using Copan Transystem dual swab
D. Throat and perirectal swab combination
Correct Answer: B. Bilateral axilla and groin composite swab [CORRECT]
Rationale: CDC recommends using a composite swab of the patient's bilateral axilla and
groin for C. auris colonization screening, with real-time PCR as the preferred testing
method . Option A is incorrect because nasal swabs are used for MRSA screening, not C.
auris. Option C describes the correct method for carbapenemase-producing organism
(CPO) rectal screening, not C. auris. Option D is incorrect because throat swabs are not
recommended for C. auris detection. Prophecy Part II Testing Insight: This question
,tests the critical distinction between MDRO screening protocols—C. auris requires skin
swabs (axilla/groin) while CRE/CPO requires rectal screening. Regulatory Citation:
CDC C. auris Screening Recommendations for Healthcare Facilities (Dec 2025).
Q2. A hospitalized patient with confirmed carbapenem-resistant Enterobacterales
(CRE) infection has completed antibiotic therapy and is clinically improved. The
infection prevention team is evaluating whether contact precautions can be
discontinued. According to current CDC and SHEA guidance, which criteria MUST
be met?
A. Clinical improvement alone with physician documentation
B. Single negative rectal culture 48 hours after antibiotics completed
C. At least 6 months since last positive culture AND 2 consecutive negative rectal swabs
at least 1 week apart while off antibiotics 7-10 days
D. Three negative cultures obtained daily for 3 consecutive days
Correct Answer: C. At least 6 months since last positive culture AND 2 consecutive
negative rectal swabs at least 1 week apart while off antibiotics 7-10 days
[CORRECT]
Rationale: CDC states there is insufficient evidence for firm discontinuation
recommendations, but CRE colonization can be prolonged (>6 months) . SHEA expert
guidance recommends discontinuation only if: ≥6 months elapsed since last positive
culture, patient is off antibiotics 7-10 days, and at least 2 consecutive negative rectal
swabs are obtained ≥1 week apart . Option A is the classic Prophecy trap—clinical
improvement alone is NEVER sufficient for MDRO discontinuation. Option B fails on
multiple criteria (single culture, insufficient timeframe, no antibiotic washout). Option
D's daily testing is not supported by evidence and may yield false negatives due to
intermittent shedding. Prophecy Part II Testing Insight: The exam consistently tests
whether you know that MDRO discontinuation requires microbiologic clearance, not
just clinical improvement. Regulatory Citation: CDC CRE Toolkit; SHEA Expert
Guidance on Duration of Contact Precautions (2017).
,Q3. During terminal cleaning of a patient room previously occupied by a patient
with Candida auris, which disinfectant and contact time combination is REQUIRED
for effective environmental decontamination?
A. Quaternary ammonium compound (QAC) with 1-minute contact time
B. EPA-registered hospital disinfectant with sporicidal claim and 5-minute contact time
C. 70% isopropyl alcohol with 30-second contact time
D. Chlorine bleach solution (1000 ppm) with 1-minute contact time
Correct Answer: B. EPA-registered hospital disinfectant with sporicidal claim and
5-minute contact time [CORRECT]
Rationale: C. auris is resistant to many standard disinfectants including QACs and
alcohol. CDC recommends using an EPA-registered hospital disinfectant effective
against C. auris (List K) with adequate contact time—typically sporicidal agents such as
hydrogen peroxide or bleach solutions with extended contact times . Option A is
incorrect because QACs are ineffective against C. auris. Option C is incorrect because
alcohol has poor efficacy against fungal spores and biofilms. Option D's concentration
and contact time are insufficient; EPA List K products require specific contact times
(often 5 minutes or more). Prophecy Part II Testing Insight: This tests knowledge that
C. auris requires sporicidal-level disinfection, not standard hospital disinfectants.
Regulatory Citation: CDC Environmental Cleaning Guidance for C. auris.
Q4. A patient with suspected Mpox (Clade I) presents to the emergency
department with vesicular lesions and fever. According to CDC isolation
guidelines, which transmission-based precautions are REQUIRED?
A. Standard Precautions only
B. Contact Precautions only
C. Contact Precautions plus Airborne Precautions (N95 respirator)
D. Droplet Precautions plus Contact Precautions
Correct Answer: C. Contact Precautions plus Airborne Precautions (N95
respirator) [CORRECT]
Rationale: Mpox (Clade I) requires both Contact Precautions (gown, gloves) AND
Airborne Precautions (N95 or higher-level respirator) due to potential for airborne
, transmission during procedures that generate aerosols and theoretical risk of
respiratory droplet transmission. Standard Precautions alone (Option A) are insufficient
for suspected Mpox. Contact Precautions only (Option B) misses the airborne
component required for Clade I. Droplet Precautions (Option D) are insufficient as Mpox
requires airborne-level respiratory protection. Prophecy Part II Testing Insight: The
exam tests whether you distinguish between Clade I (more virulent, airborne added)
and Clade II protocols, and whether you default to the highest level of precaution when
uncertain. Regulatory Citation: CDC Mpox Infection Control Guidance (2024-2025
updates).
Q5. Which level of disinfection is REQUIRED for semi-critical items such as
endoscopes, respiratory therapy equipment, and anesthesia breathing circuits?
A. Low-level disinfection (kills most bacteria, some viruses, not mycobacteria or spores)
B. Intermediate-level disinfection (kills mycobacteria, most viruses, not spores)
C. High-level disinfection (kills all microorganisms except high numbers of bacterial
spores)
D. Sterilization (kills all microbial life including bacterial spores)
Correct Answer: C. High-level disinfection (kills all microorganisms except high
numbers of bacterial spores) [CORRECT]
Rationale: Semi-critical items contact mucous membranes or non-intact skin and
require high-level disinfection (HLD) per Spaulding classification. HLD destroys all
microorganisms except high numbers of bacterial endospores. Option A (low-level) is
for non-critical items contacting intact skin. Option B (intermediate-level) is insufficient
for semi-critical items. Option D (sterilization) is required for critical items (surgical
instruments, implants) but is not required for semi-critical items unless specifically
indicated. Prophecy Part II Testing Insight: The exam frequently tests the Spaulding
classification hierarchy—know that semi-critical = HLD, critical = sterilization, non-
critical = low/intermediate level. Regulatory Citation: CDC Guideline for Disinfection
and Sterilization in Healthcare Facilities (2008, reaffirmed 2023).
