NURS 5334 Module 7 Quiz | Advanced Pharmacology | Original Practice Quiz Page 1
, NURS 5334 PHARMACOLOGY MODULE 7 QUIZ
Advanced Pharmacology for Nurse Practitioners
University of Texas at Arlington (UTA) 100-Question
Practice Quiz
2026/2027 Edition
Antimicrobial Principles
1. A stable patient with suspected bacterial infection has cultures ordered. When should
theyideally be obtained?
A) Before starting antibiotics when doing so will not dangerously delay treatment
B) After several antibiotic doses
C) Cultures are unnecessary if fever is present
D) Only after symptoms resolve
Correct Answer: A) Before starting antibiotics when doing so will not dangerously delay treatment
Rationale: Cultures obtained before antimicrobial exposure are more likely to identify the pathogen and guide
targeted therapy. In severe sepsis or another emergency, treatment should not be dangerously delayed just to obtain
cultures.
2. What is the main goal of antimicrobial stewardship?
A) Use two broad-spectrum antibiotics for every infection
B) Avoid cultures to reduce cost
C) Use the narrowest effective therapy for the shortest appropriate duration
D) Continue antibiotics until every symptom disappears
Correct Answer: C) Use the narrowest effective therapy for the shortest appropriate duration
Rationale: Stewardship balances effective treatment with minimizing toxicity, resistance, and collateral damage.
Appropriate spectrum, dose, route, and duration are chosen according to the infection, patient, and microbiologic
data.
3. A culture result identifies a susceptible organism after broad empiric therapy was started.
Whataction best reflects de-escalation?
A) Stop therapy immediately even if infection persists
B) Continue all empiric drugs regardless of result
C) Add another broad-spectrum agent
D) Narrow therapy to the most targeted effective agent
Correct Answer: D) Narrow therapy to the most targeted effective agent
Rationale: De-escalation uses microbiologic data to reduce unnecessary spectrum while preserving efficacy. This
lowers adverse effects, selection pressure, and disruption of normal flora.
4. Minimum inhibitory concentration (MIC) refers to what?
A) The dose that causes patient toxicity
NURS 5334 Module 7 Quiz | Advanced Pharmacology | Original Practice Quiz Page 2
, B) The highest concentration achieved in serum
C) The amount of drug excreted in urine
D) The lowest antimicrobial concentration that visibly inhibits organism growth
Correct Answer: D) The lowest antimicrobial concentration that visibly inhibits organism growth
Rationale: The MIC is a laboratory measure of antimicrobial activity against a specific organism. Susceptibility
interpretation combines MIC values with organism-specific breakpoints and achievable drug exposures.
5. A bactericidal drug is distinguished from a bacteriostatic drug because it primarily does what?
A) Has no effect on dividing organisms
B) Works only on viruses
C) Prevents all resistance
D) Kills susceptible bacteria rather than only inhibiting their growth
Correct Answer: D) Kills susceptible bacteria rather than only inhibiting their growth
Rationale: Bactericidal agents directly reduce viable bacterial counts, whereas bacteriostatic agents mainly
suppress growth and rely more on host defenses. Clinical importance varies by infection and host status.
6. Which mechanism commonly causes beta-lactam resistance?
A) Inhibition of fungal ergosterol
B) Increased folate synthesis by the host
C) Production of beta-lactamases that hydrolyze the beta-lactam ring
D) Loss of viral neuraminidase
Correct Answer: C) Production of beta-lactamases that hydrolyze the beta-lactam ring
Rationale: Beta-lactamases inactivate susceptible penicillins and cephalosporins by opening the beta-lactam ring.
Other mechanisms include altered penicillin-binding proteins, reduced permeability, and efflux.
7. MRSA resistance to most beta-lactams is primarily related to which change?
A) An altered penicillin-binding protein with low beta-lactam affinity
B) Loss of ribosomes
C) Excess bacterial folate production
D) Overproduction of human albumin
Correct Answer: A) An altered penicillin-binding protein with low beta-lactam affinity
Rationale: MRSA carries altered penicillin-binding proteins, especially PBP2a, that have reduced affinity for most
beta-lactam antibiotics. This allows cell-wall synthesis to continue despite drug exposure.
8. Efflux pumps contribute to antimicrobial resistance by doing what?
A) Actively removing drug from the bacterial cell
B) Increasing drug absorption from the gut
C) Destroying host antibodies
D) Converting antibiotics into vitamins
NURS 5334 Module 7 Quiz | Advanced Pharmacology | Original Practice Quiz Page 3
, NURS 5334 PHARMACOLOGY MODULE 7 QUIZ
Advanced Pharmacology for Nurse Practitioners
University of Texas at Arlington (UTA) 100-Question
Practice Quiz
2026/2027 Edition
Antimicrobial Principles
1. A stable patient with suspected bacterial infection has cultures ordered. When should
theyideally be obtained?
A) Before starting antibiotics when doing so will not dangerously delay treatment
B) After several antibiotic doses
C) Cultures are unnecessary if fever is present
D) Only after symptoms resolve
Correct Answer: A) Before starting antibiotics when doing so will not dangerously delay treatment
Rationale: Cultures obtained before antimicrobial exposure are more likely to identify the pathogen and guide
targeted therapy. In severe sepsis or another emergency, treatment should not be dangerously delayed just to obtain
cultures.
2. What is the main goal of antimicrobial stewardship?
A) Use two broad-spectrum antibiotics for every infection
B) Avoid cultures to reduce cost
C) Use the narrowest effective therapy for the shortest appropriate duration
D) Continue antibiotics until every symptom disappears
Correct Answer: C) Use the narrowest effective therapy for the shortest appropriate duration
Rationale: Stewardship balances effective treatment with minimizing toxicity, resistance, and collateral damage.
Appropriate spectrum, dose, route, and duration are chosen according to the infection, patient, and microbiologic
data.
3. A culture result identifies a susceptible organism after broad empiric therapy was started.
Whataction best reflects de-escalation?
A) Stop therapy immediately even if infection persists
B) Continue all empiric drugs regardless of result
C) Add another broad-spectrum agent
D) Narrow therapy to the most targeted effective agent
Correct Answer: D) Narrow therapy to the most targeted effective agent
Rationale: De-escalation uses microbiologic data to reduce unnecessary spectrum while preserving efficacy. This
lowers adverse effects, selection pressure, and disruption of normal flora.
4. Minimum inhibitory concentration (MIC) refers to what?
A) The dose that causes patient toxicity
NURS 5334 Module 7 Quiz | Advanced Pharmacology | Original Practice Quiz Page 2
, B) The highest concentration achieved in serum
C) The amount of drug excreted in urine
D) The lowest antimicrobial concentration that visibly inhibits organism growth
Correct Answer: D) The lowest antimicrobial concentration that visibly inhibits organism growth
Rationale: The MIC is a laboratory measure of antimicrobial activity against a specific organism. Susceptibility
interpretation combines MIC values with organism-specific breakpoints and achievable drug exposures.
5. A bactericidal drug is distinguished from a bacteriostatic drug because it primarily does what?
A) Has no effect on dividing organisms
B) Works only on viruses
C) Prevents all resistance
D) Kills susceptible bacteria rather than only inhibiting their growth
Correct Answer: D) Kills susceptible bacteria rather than only inhibiting their growth
Rationale: Bactericidal agents directly reduce viable bacterial counts, whereas bacteriostatic agents mainly
suppress growth and rely more on host defenses. Clinical importance varies by infection and host status.
6. Which mechanism commonly causes beta-lactam resistance?
A) Inhibition of fungal ergosterol
B) Increased folate synthesis by the host
C) Production of beta-lactamases that hydrolyze the beta-lactam ring
D) Loss of viral neuraminidase
Correct Answer: C) Production of beta-lactamases that hydrolyze the beta-lactam ring
Rationale: Beta-lactamases inactivate susceptible penicillins and cephalosporins by opening the beta-lactam ring.
Other mechanisms include altered penicillin-binding proteins, reduced permeability, and efflux.
7. MRSA resistance to most beta-lactams is primarily related to which change?
A) An altered penicillin-binding protein with low beta-lactam affinity
B) Loss of ribosomes
C) Excess bacterial folate production
D) Overproduction of human albumin
Correct Answer: A) An altered penicillin-binding protein with low beta-lactam affinity
Rationale: MRSA carries altered penicillin-binding proteins, especially PBP2a, that have reduced affinity for most
beta-lactam antibiotics. This allows cell-wall synthesis to continue despite drug exposure.
8. Efflux pumps contribute to antimicrobial resistance by doing what?
A) Actively removing drug from the bacterial cell
B) Increasing drug absorption from the gut
C) Destroying host antibodies
D) Converting antibiotics into vitamins
NURS 5334 Module 7 Quiz | Advanced Pharmacology | Original Practice Quiz Page 3
