University of Texas at Arlington 2026 NURS 5334 Quiz 2 Study
Guide | Practice Questions, Answers & Rationales
Prepare for the University of Texas at Arlington NURS 5334 Quiz 2 with this
comprehensive study guide featuring original practice questions, accurate
answers, and detailed rationales. Covers advanced nursing concepts, evidence-
based practice, patient assessment, clinical decision-making, pharmacology, and
primary care management aligned with course objectives. Perfect for focused
review, self-assessment, and building confidence before Quiz 2.
Section 1: Advanced Antimicrobial Therapy
Q1. A patient with a severe intra-abdominal infection is prescribed a medication
that inhibits bacterial cell wall synthesis by binding to the D-alanyl-D-alanine
terminal end of peptidoglycan precursors. Which antibiotic does this describe?
A) Amoxicillin
B) Azithromycin
C) Vancomycin
D) Ciprofloxacin
Answer: C) Vancomycin
Rationale: Vancomycin is a glycopeptide antibiotic that specifically binds to the D-alanyl-
D-alanine portion of cell wall precursors. This prevents the cross-linking and
polymerization of the bacterial peptidoglycan layer, leading to cell death in Gram-
positive organisms.
Q2. When prescribing an aminoglycoside such as tobramycin, the family nurse
practitioner monitors serum trough levels primarily to minimize the risk of which
irreversible adverse effect?
A) Acute tubular necrosis
B) Vestibulocochlear ototoxicity
C) Immune-mediated hemolytic anemia
D) Drug-induced hepatic steatosis
Answer: B) Vestibulocochlear ototoxicity
,Rationale: While aminoglycoside-induced nephrotoxicity (acute tubular necrosis) is
typically reversible upon drug discontinuation, aminoglycoside-induced ototoxicity
(vestibular or cochlear damage) is frequently permanent and irreversible. Trough
monitoring helps keep progressive drug accumulation below toxic thresholds.
Q3. A 26-year-old female presents with an uncomplicated lower urinary tract
infection. She has a documented Type I hypersensitivity allergy to penicillin
(anaphylaxis). Which of the following first-line agents is safest to prescribe?
A) Cephalexin
B) Nitrofurantoin
C) Amoxicillin-clavulanate
D) Cefdinir
Answer: B) Nitrofurantoin
Rationale: Nitrofurantoin does not share structural or cross-reactivity traits with beta-
lactam antibiotics, making it perfectly safe for a patient with a Type I penicillin allergy.
Cephalosporins (like cephalexin and cefdinir) carry a small but real cross-reactivity risk
in patients with true anaphylactic reactions to penicillin.
Q4. A patient stabilized on a therapeutic daily dose of warfarin requires a short
course of trimethoprim-sulfamethoxazole for a skin infection. What physiological
shift should the clinician anticipate?
A) The INR will decline rapidly, increasing the risk of thrombotic stroke.
B) The trimethoprim-sulfamethoxazole will accelerate warfarin metabolism via CYP3A4
inductions.
C) The INR will rise dramatically, increasing the risk of life-threatening bleeding.
D) The patient will experience immediate treatment failure of the antibiotic due to protein
binding displacement.
Answer: C) The INR will rise dramatically, increasing the risk of life-threatening
bleeding.
Rationale: Trimethoprim-sulfamethoxazole (Bactrim) is a potent inhibitor of CYP2C9,
the primary enzyme pathway responsible for metabolizing the more active isomer of
warfarin. This interaction prolongs the half-life of warfarin, spikes the INR, and raises
hemorrhage risks.
,Q5. A patient presents with a severe soft-tissue infection. Laboratory cultures
isolate a strain of Methicillin-Resistant Staphylococcus aureus (MRSA). Which
oral antibiotic is a high-yield choice for community-acquired MRSA?
A) Cephalexin
B) Amoxicillin
C) Doxycycline
D) Levofloxacin
Answer: C) Doxycycline
Rationale: Tetracyclines (such as doxycycline and minocycline) retain excellent, reliable
oral efficacy against community-acquired Methicillin-Resistant Staphylococcus aureus
(MRSA). Beta-lactams like cephalexin and amoxicillin are entirely ineffective against
MRSA strains.
Q6. Which of the following options accurately profiles the structural mechanism
of action of fluoroquinolones like ciprofloxacin?
A) Binding to the 50S ribosomal subunit to arrest peptide chain elongation
B) Blocking the converting enzyme required for viral coat disassembly
C) Inhibiting bacterial DNA gyrase and topoisomerase IV to arrest replication
D) Disrupting the fungal cell membrane through direct ergosterol binding
Answer: C) Inhibiting bacterial DNA gyrase and topoisomerase IV to arrest
replication
Rationale: Fluoroquinolones directly prevent bacterial DNA synthesis and cell
proliferation by targeting two essential enzymes: DNA gyrase (topoisomerase II), which
counteracts DNA supercoiling, and topoisomerase IV, which helps split newly replicated
chromosomal rings.
Q7. An adult patient developed severe, foul-smelling watery diarrhea and
abdominal pain 10 days after finishing a course of clindamycin. Stool assays
confirm Clostridioides difficile-associated diarrhea (CDAD). Which first-line oral
therapy should be initiated?
A) Oral Vancomycin
B) Oral Metronidazole
C) Oral Loperamide
D) Oral Amoxicillin
Answer: A) Oral Vancomycin
, Rationale: Oral vancomycin (or oral fidaxomicin) is the preferred, first-line standard of
care for treating Clostridioides difficile-associated diarrhea (CDAD). Intravenous
vancomycin is ineffective for this condition because it cannot cross into the gut lumen.
Q8. A patient requires therapy with Macrolide antibiotics (e.g., Clarithromycin).
The provider reviews the patient's baseline EKG due to the risk of which class-
wide drug-induced cardiac effect?
A) Sinus bradycardia with a prolonged PR interval
B) Second-degree type II atrioventricular block
C) QT interval prolongation and Torsades de Pointes
D) Uncontrolled supraventricular tachycardia
Answer: C) QT interval prolongation and Torsades de Pointes
Rationale: Macrolide antibiotics block hepatic and cardiac potassium channels, which
can delay ventricular repolarization, prolong the QT interval, and increase the risk of
lethal polymorphic ventricular tachycardia (Torsades de Pointes).
Q9. A patient is prescribed a course of Linezolid for a vancomycin-resistant
enterococcus (VRE) infection. The patient should be strictly counseled to avoid
consuming foods rich in tyramine to prevent which pharmacological event?
A) A severe hypertensive crisis
B) Immediate bone marrow failure
C) Sudden-onset permanent peripheral neuropathy
D) Acute hepatic necrosis
Answer: A) A severe hypertensive crisis
Rationale: Linezolid possesses weak, reversible non-selective monoamine oxidase
inhibitor (MAOI) properties. If a patient consumes significant dietary tyramine (aged
cheeses, cured meats, red wine), it can trigger an abrupt accumulation of
norepinephrine, causing a hypertensive crisis.
Q10. A nurse practitioner is treating a patient diagnosed with systemic
histoplasmosis. The plan includes the initiation of intravenous Amphotericin B.
Which physiological mechanism accounts for the common adverse effect of
severe hypokalemia?
A) Intestinal malabsorption of potassium driven by systemic mucosal irritation
Guide | Practice Questions, Answers & Rationales
Prepare for the University of Texas at Arlington NURS 5334 Quiz 2 with this
comprehensive study guide featuring original practice questions, accurate
answers, and detailed rationales. Covers advanced nursing concepts, evidence-
based practice, patient assessment, clinical decision-making, pharmacology, and
primary care management aligned with course objectives. Perfect for focused
review, self-assessment, and building confidence before Quiz 2.
Section 1: Advanced Antimicrobial Therapy
Q1. A patient with a severe intra-abdominal infection is prescribed a medication
that inhibits bacterial cell wall synthesis by binding to the D-alanyl-D-alanine
terminal end of peptidoglycan precursors. Which antibiotic does this describe?
A) Amoxicillin
B) Azithromycin
C) Vancomycin
D) Ciprofloxacin
Answer: C) Vancomycin
Rationale: Vancomycin is a glycopeptide antibiotic that specifically binds to the D-alanyl-
D-alanine portion of cell wall precursors. This prevents the cross-linking and
polymerization of the bacterial peptidoglycan layer, leading to cell death in Gram-
positive organisms.
Q2. When prescribing an aminoglycoside such as tobramycin, the family nurse
practitioner monitors serum trough levels primarily to minimize the risk of which
irreversible adverse effect?
A) Acute tubular necrosis
B) Vestibulocochlear ototoxicity
C) Immune-mediated hemolytic anemia
D) Drug-induced hepatic steatosis
Answer: B) Vestibulocochlear ototoxicity
,Rationale: While aminoglycoside-induced nephrotoxicity (acute tubular necrosis) is
typically reversible upon drug discontinuation, aminoglycoside-induced ototoxicity
(vestibular or cochlear damage) is frequently permanent and irreversible. Trough
monitoring helps keep progressive drug accumulation below toxic thresholds.
Q3. A 26-year-old female presents with an uncomplicated lower urinary tract
infection. She has a documented Type I hypersensitivity allergy to penicillin
(anaphylaxis). Which of the following first-line agents is safest to prescribe?
A) Cephalexin
B) Nitrofurantoin
C) Amoxicillin-clavulanate
D) Cefdinir
Answer: B) Nitrofurantoin
Rationale: Nitrofurantoin does not share structural or cross-reactivity traits with beta-
lactam antibiotics, making it perfectly safe for a patient with a Type I penicillin allergy.
Cephalosporins (like cephalexin and cefdinir) carry a small but real cross-reactivity risk
in patients with true anaphylactic reactions to penicillin.
Q4. A patient stabilized on a therapeutic daily dose of warfarin requires a short
course of trimethoprim-sulfamethoxazole for a skin infection. What physiological
shift should the clinician anticipate?
A) The INR will decline rapidly, increasing the risk of thrombotic stroke.
B) The trimethoprim-sulfamethoxazole will accelerate warfarin metabolism via CYP3A4
inductions.
C) The INR will rise dramatically, increasing the risk of life-threatening bleeding.
D) The patient will experience immediate treatment failure of the antibiotic due to protein
binding displacement.
Answer: C) The INR will rise dramatically, increasing the risk of life-threatening
bleeding.
Rationale: Trimethoprim-sulfamethoxazole (Bactrim) is a potent inhibitor of CYP2C9,
the primary enzyme pathway responsible for metabolizing the more active isomer of
warfarin. This interaction prolongs the half-life of warfarin, spikes the INR, and raises
hemorrhage risks.
,Q5. A patient presents with a severe soft-tissue infection. Laboratory cultures
isolate a strain of Methicillin-Resistant Staphylococcus aureus (MRSA). Which
oral antibiotic is a high-yield choice for community-acquired MRSA?
A) Cephalexin
B) Amoxicillin
C) Doxycycline
D) Levofloxacin
Answer: C) Doxycycline
Rationale: Tetracyclines (such as doxycycline and minocycline) retain excellent, reliable
oral efficacy against community-acquired Methicillin-Resistant Staphylococcus aureus
(MRSA). Beta-lactams like cephalexin and amoxicillin are entirely ineffective against
MRSA strains.
Q6. Which of the following options accurately profiles the structural mechanism
of action of fluoroquinolones like ciprofloxacin?
A) Binding to the 50S ribosomal subunit to arrest peptide chain elongation
B) Blocking the converting enzyme required for viral coat disassembly
C) Inhibiting bacterial DNA gyrase and topoisomerase IV to arrest replication
D) Disrupting the fungal cell membrane through direct ergosterol binding
Answer: C) Inhibiting bacterial DNA gyrase and topoisomerase IV to arrest
replication
Rationale: Fluoroquinolones directly prevent bacterial DNA synthesis and cell
proliferation by targeting two essential enzymes: DNA gyrase (topoisomerase II), which
counteracts DNA supercoiling, and topoisomerase IV, which helps split newly replicated
chromosomal rings.
Q7. An adult patient developed severe, foul-smelling watery diarrhea and
abdominal pain 10 days after finishing a course of clindamycin. Stool assays
confirm Clostridioides difficile-associated diarrhea (CDAD). Which first-line oral
therapy should be initiated?
A) Oral Vancomycin
B) Oral Metronidazole
C) Oral Loperamide
D) Oral Amoxicillin
Answer: A) Oral Vancomycin
, Rationale: Oral vancomycin (or oral fidaxomicin) is the preferred, first-line standard of
care for treating Clostridioides difficile-associated diarrhea (CDAD). Intravenous
vancomycin is ineffective for this condition because it cannot cross into the gut lumen.
Q8. A patient requires therapy with Macrolide antibiotics (e.g., Clarithromycin).
The provider reviews the patient's baseline EKG due to the risk of which class-
wide drug-induced cardiac effect?
A) Sinus bradycardia with a prolonged PR interval
B) Second-degree type II atrioventricular block
C) QT interval prolongation and Torsades de Pointes
D) Uncontrolled supraventricular tachycardia
Answer: C) QT interval prolongation and Torsades de Pointes
Rationale: Macrolide antibiotics block hepatic and cardiac potassium channels, which
can delay ventricular repolarization, prolong the QT interval, and increase the risk of
lethal polymorphic ventricular tachycardia (Torsades de Pointes).
Q9. A patient is prescribed a course of Linezolid for a vancomycin-resistant
enterococcus (VRE) infection. The patient should be strictly counseled to avoid
consuming foods rich in tyramine to prevent which pharmacological event?
A) A severe hypertensive crisis
B) Immediate bone marrow failure
C) Sudden-onset permanent peripheral neuropathy
D) Acute hepatic necrosis
Answer: A) A severe hypertensive crisis
Rationale: Linezolid possesses weak, reversible non-selective monoamine oxidase
inhibitor (MAOI) properties. If a patient consumes significant dietary tyramine (aged
cheeses, cured meats, red wine), it can trigger an abrupt accumulation of
norepinephrine, causing a hypertensive crisis.
Q10. A nurse practitioner is treating a patient diagnosed with systemic
histoplasmosis. The plan includes the initiation of intravenous Amphotericin B.
Which physiological mechanism accounts for the common adverse effect of
severe hypokalemia?
A) Intestinal malabsorption of potassium driven by systemic mucosal irritation
