NURS 5334 Module 5 Quiz | Original Practice Examination | 2026/2027 Edition
, NURS 5334 PHARMACOLOGY MODULE 5 QUIZ
Advanced Pharmacology for Nurse Practitioners
University of Texas at Arlington (UTA)
100-Question Original Practice Examination 2026/2027
Edition
________________________________________________________________________________
1. A stable outpatient has suspected bacterial infection, but the organism is not yet known. Which prescribing
approach best reflects empiric therapy?
A) Choose an agent that covers the most likely pathogens while considering local resistance patterns.
B) Delay all treatment until a culture is finalized regardless of severity.
C) Use the broadest possible combination for every infection.
D) Select an antibiotic solely by its half-life.
Correct Answer: Choose an agent that covers the most likely pathogens while considering local resistance patterns.
Rationale: Empiric therapy is based on the likely site and organisms, patient factors, and local susceptibility data. It
should be narrowed when culture information becomes available to reduce toxicity, cost, and selection pressure for
resistance. This distinction is clinically useful because antimicrobial choice should match the pathogen, infection site,
and patient-specific risk factors.
2. Culture results identify a susceptible organism after broad-spectrum antibiotics were started. What is the best
next step?
A) Narrow therapy to the least broad effective agent.
B) Continue broad-spectrum therapy to prevent resistance.
C) Add a second agent with overlapping coverage.
D) Stop therapy immediately even if infection is ongoing.
Correct Answer: Narrow therapy to the least broad effective agent.
Rationale: De-escalation to targeted therapy is a core stewardship strategy. Once the pathogen and susceptibility are
known, unnecessary broad coverage increases adverse effects and resistance pressure without improving efficacy. The
competing options either describe a different drug class, a different toxicity, or a strategy that would unnecessarily
increase risk.
3. Which finding most strongly supports obtaining cultures before the first antimicrobial dose when clinically
feasible?
A) The patient has a mild viral upper respiratory infection.
B) The patient requests an antibiotic for reassurance.
C) The patient has previously tolerated amoxicillin.
D) The patient has a serious infection in which pathogen identification could change therapy.
Correct Answer: The patient has a serious infection in which pathogen identification could change therapy.
Rationale: Cultures are most valuable when infection is significant and microbiologic identification may alter
treatment. In unstable patients, treatment should not be dangerously delayed, but cultures should be obtained first
when this can be done promptly. Applying this principle helps balance effective treatment with stewardship and
avoidance of preventable adverse effects.
4. An antimicrobial is described as bactericidal. What does that term mean?
A) It prevents all bacterial resistance from developing.
B) It kills susceptible bacteria rather than merely inhibiting their growth.
NURS 5334 Module 5 Quiz | Original Practice Examination | 2026/2027 Edition
, C) It acts only against anaerobic organisms.
D) It is always superior to bacteriostatic therapy in every infection.
Correct Answer: It kills susceptible bacteria rather than merely inhibiting their growth.
Rationale: Bactericidal drugs reduce viable bacterial counts by killing organisms. Bacteriostatic agents inhibit growth
and rely more on host defenses; either type may be clinically appropriate depending on infection site, organism, and
host status. For advanced practice prescribing, the same concept should be integrated with renal function, allergies,
interactions, and local susceptibility data.
5. The minimum inhibitory concentration (MIC) is best defined as which value?
A) The serum concentration that causes toxicity in 50% of patients.
B) The dose required to sterilize all tissues.
C) The lowest antimicrobial concentration that visibly inhibits growth of an organism.
D) The total amount of drug excreted in urine over 24 hours.
Correct Answer: The lowest antimicrobial concentration that visibly inhibits growth of an organism.
Rationale: MIC is the lowest concentration preventing visible growth under standardized conditions.
Susceptibility breakpoints interpret MIC values in relation to achievable drug exposures and organism-specific data.
This distinction is clinically useful because antimicrobial choice should match the pathogen, infection site, and patient-
specific risk factors.
6. A patient asks why antibiotics do not treat influenza. Which explanation is most accurate?
A) Antibiotics work only after fever has been present for 72 hours.
B) Influenza organisms are always resistant bacteria.
C) Influenza is viral, and antibacterial drugs do not target viral replication mechanisms.
D) Antibiotics are ineffective only because they cannot enter respiratory secretions.
Correct Answer: Influenza is viral, and antibacterial drugs do not target viral replication mechanisms.
Rationale: Antibacterial agents target bacterial structures or processes such as cell walls, ribosomes, or folate
synthesis. Influenza is caused by a virus, so routine antibacterial treatment offers no benefit unless a bacterial
complication is present. The competing options either describe a different drug class, a different toxicity, or a strategy
that would unnecessarily increase risk.
7. Which practice most directly reduces selective pressure for antimicrobial resistance?
A) Use two antibiotics whenever one would work.
B) Extend therapy after symptoms resolve in every case.
C) Use the narrowest effective drug for the shortest effective duration.
D) Avoid cultures so treatment is not delayed.
Correct Answer: Use the narrowest effective drug for the shortest effective duration.
Rationale: Resistance is promoted by unnecessary exposure and overly broad therapy. Targeted agents and evidence-
based durations reduce ecological pressure while maintaining effective treatment. Applying this principle helps balance
effective treatment with stewardship and avoidance of preventable adverse effects.
8. A patient has severe sepsis with suspected bacterial infection. Which principle takes priority?
A) Wait for final susceptibilities before treatment.
B) Begin appropriate empiric antimicrobial therapy promptly after obtaining cultures if this does not cause
meaningful delay.
C) Use topical therapy first to minimize adverse effects.
D) Withhold antimicrobials until the fever exceeds 40 C.
Correct Answer: Begin appropriate empiric antimicrobial therapy promptly after obtaining cultures if this does not
cause meaningful delay.
NURS 5334 Module 5 Quiz | Original Practice Examination | 2026/2027 Edition
, NURS 5334 PHARMACOLOGY MODULE 5 QUIZ
Advanced Pharmacology for Nurse Practitioners
University of Texas at Arlington (UTA)
100-Question Original Practice Examination 2026/2027
Edition
________________________________________________________________________________
1. A stable outpatient has suspected bacterial infection, but the organism is not yet known. Which prescribing
approach best reflects empiric therapy?
A) Choose an agent that covers the most likely pathogens while considering local resistance patterns.
B) Delay all treatment until a culture is finalized regardless of severity.
C) Use the broadest possible combination for every infection.
D) Select an antibiotic solely by its half-life.
Correct Answer: Choose an agent that covers the most likely pathogens while considering local resistance patterns.
Rationale: Empiric therapy is based on the likely site and organisms, patient factors, and local susceptibility data. It
should be narrowed when culture information becomes available to reduce toxicity, cost, and selection pressure for
resistance. This distinction is clinically useful because antimicrobial choice should match the pathogen, infection site,
and patient-specific risk factors.
2. Culture results identify a susceptible organism after broad-spectrum antibiotics were started. What is the best
next step?
A) Narrow therapy to the least broad effective agent.
B) Continue broad-spectrum therapy to prevent resistance.
C) Add a second agent with overlapping coverage.
D) Stop therapy immediately even if infection is ongoing.
Correct Answer: Narrow therapy to the least broad effective agent.
Rationale: De-escalation to targeted therapy is a core stewardship strategy. Once the pathogen and susceptibility are
known, unnecessary broad coverage increases adverse effects and resistance pressure without improving efficacy. The
competing options either describe a different drug class, a different toxicity, or a strategy that would unnecessarily
increase risk.
3. Which finding most strongly supports obtaining cultures before the first antimicrobial dose when clinically
feasible?
A) The patient has a mild viral upper respiratory infection.
B) The patient requests an antibiotic for reassurance.
C) The patient has previously tolerated amoxicillin.
D) The patient has a serious infection in which pathogen identification could change therapy.
Correct Answer: The patient has a serious infection in which pathogen identification could change therapy.
Rationale: Cultures are most valuable when infection is significant and microbiologic identification may alter
treatment. In unstable patients, treatment should not be dangerously delayed, but cultures should be obtained first
when this can be done promptly. Applying this principle helps balance effective treatment with stewardship and
avoidance of preventable adverse effects.
4. An antimicrobial is described as bactericidal. What does that term mean?
A) It prevents all bacterial resistance from developing.
B) It kills susceptible bacteria rather than merely inhibiting their growth.
NURS 5334 Module 5 Quiz | Original Practice Examination | 2026/2027 Edition
, C) It acts only against anaerobic organisms.
D) It is always superior to bacteriostatic therapy in every infection.
Correct Answer: It kills susceptible bacteria rather than merely inhibiting their growth.
Rationale: Bactericidal drugs reduce viable bacterial counts by killing organisms. Bacteriostatic agents inhibit growth
and rely more on host defenses; either type may be clinically appropriate depending on infection site, organism, and
host status. For advanced practice prescribing, the same concept should be integrated with renal function, allergies,
interactions, and local susceptibility data.
5. The minimum inhibitory concentration (MIC) is best defined as which value?
A) The serum concentration that causes toxicity in 50% of patients.
B) The dose required to sterilize all tissues.
C) The lowest antimicrobial concentration that visibly inhibits growth of an organism.
D) The total amount of drug excreted in urine over 24 hours.
Correct Answer: The lowest antimicrobial concentration that visibly inhibits growth of an organism.
Rationale: MIC is the lowest concentration preventing visible growth under standardized conditions.
Susceptibility breakpoints interpret MIC values in relation to achievable drug exposures and organism-specific data.
This distinction is clinically useful because antimicrobial choice should match the pathogen, infection site, and patient-
specific risk factors.
6. A patient asks why antibiotics do not treat influenza. Which explanation is most accurate?
A) Antibiotics work only after fever has been present for 72 hours.
B) Influenza organisms are always resistant bacteria.
C) Influenza is viral, and antibacterial drugs do not target viral replication mechanisms.
D) Antibiotics are ineffective only because they cannot enter respiratory secretions.
Correct Answer: Influenza is viral, and antibacterial drugs do not target viral replication mechanisms.
Rationale: Antibacterial agents target bacterial structures or processes such as cell walls, ribosomes, or folate
synthesis. Influenza is caused by a virus, so routine antibacterial treatment offers no benefit unless a bacterial
complication is present. The competing options either describe a different drug class, a different toxicity, or a strategy
that would unnecessarily increase risk.
7. Which practice most directly reduces selective pressure for antimicrobial resistance?
A) Use two antibiotics whenever one would work.
B) Extend therapy after symptoms resolve in every case.
C) Use the narrowest effective drug for the shortest effective duration.
D) Avoid cultures so treatment is not delayed.
Correct Answer: Use the narrowest effective drug for the shortest effective duration.
Rationale: Resistance is promoted by unnecessary exposure and overly broad therapy. Targeted agents and evidence-
based durations reduce ecological pressure while maintaining effective treatment. Applying this principle helps balance
effective treatment with stewardship and avoidance of preventable adverse effects.
8. A patient has severe sepsis with suspected bacterial infection. Which principle takes priority?
A) Wait for final susceptibilities before treatment.
B) Begin appropriate empiric antimicrobial therapy promptly after obtaining cultures if this does not cause
meaningful delay.
C) Use topical therapy first to minimize adverse effects.
D) Withhold antimicrobials until the fever exceeds 40 C.
Correct Answer: Begin appropriate empiric antimicrobial therapy promptly after obtaining cultures if this does not
cause meaningful delay.
NURS 5334 Module 5 Quiz | Original Practice Examination | 2026/2027 Edition
