NURS 5334/NURS5334: Quiz 2 COMPREHENSIVE
NURSING PHARMACOLOGY EXAM Practice
Questions with Detailed Rationales 2026
ACTUAL!!!
ANTIMICROBIALS SECTION
Question 1
What is the primary mechanism of action of beta-lactam antibiotics like penicillin?
A) Inhibits protein synthesis
B) Inhibits cell wall synthesis
C) Alters DNA replication
D) Blocks folic acid synthesis
ANSWER✔✨-: B
Rationale:
Option A is incorrect because protein synthesis inhibitors include drug classes like aminoglycosides,
tetracyclines, and macrolides, not beta-lactams.
Option B is correct because beta-lactams inhibit bacterial cell wall synthesis by binding to penicillin-
binding proteins, which prevents cross-linking of peptidoglycan chains, leading to cell wall weakness and
bacterial lysis.
Option C is incorrect because drugs that alter DNA replication include fluoroquinolones, not beta-lactam
antibiotics.
Option D is incorrect because folic acid synthesis is blocked by sulfonamides and trimethoprim, not
beta-lactams.
Question 2
Which generation of cephalosporins is most effective against Pseudomonas aeruginosa?
,A) First
B) Second
C) Third
D) Fourth
ANSWER✔✨-: D
Rationale:
Option A is incorrect because first-generation cephalosporins (e.g., cefazolin, cephalexin) have good
gram-positive coverage but limited gram-negative activity and no pseudomonal coverage.
Option B is incorrect because second-generation cephalosporins (e.g., cefuroxime, cefoxitin) have
increased gram-negative coverage but still lack activity against Pseudomonas.
Option C is partially correct as some third-generation cephalosporins like ceftazidime have anti-
pseudomonal activity, but they are not the most effective.
Option D is correct because fourth-generation cephalosporins like cefepime have broad-spectrum
activity including excellent coverage against Pseudomonas aeruginosa and are more stable against beta-
lactamases.
Question 3
Vancomycin is the drug of choice for:
A) MRSA infections
B) VRE infections
C) UTI
D) Syphilis
ANSWER✔✨-: A
Rationale:
Option A is correct because vancomycin is first-line therapy for MRSA (Methicillin-Resistant
Staphylococcus aureus) infections due to its excellent gram-positive spectrum and effectiveness against
resistant strains.
Option B is incorrect because VRE (Vancomycin-Resistant Enterococci) are, by definition, resistant to
vancomycin; alternatives include linezolid or daptomycin.
Option C is incorrect because UTIs are typically treated with agents like trimethoprim-sulfamethoxazole,
nitrofurantoin, or fluoroquinolones, not vancomycin.
Option D is incorrect because syphilis is treated with penicillin G, not vancomycin.
Question 4
,What is the peak concern with aminoglycosides?
A) Stevens-Johnson syndrome
B) Hepatotoxicity
C) Ototoxicity and nephrotoxicity
D) Anemia
ANSWER✔✨-: C
Rationale:
Option A is incorrect because Stevens-Johnson syndrome is more commonly associated with
sulfonamides, anticonvulsants, and allopurinol.
Option B is incorrect because hepatotoxicity is not a primary concern with aminoglycosides; it's more
associated with drugs like isoniazid, acetaminophen, and certain statins.
Option C is correct because aminoglycosides (gentamicin, tobramycin, amikacin) are well-known for
causing both nephrotoxicity (kidney damage) and ototoxicity (hearing loss and vestibular damage),
requiring careful monitoring of drug levels and renal function.
Option D is incorrect because anemia is not a characteristic adverse effect of aminoglycosides.
Question 5
What mineral interactions reduce the absorption of tetracyclines?
A) Sodium
B) Potassium
C) Calcium, iron, magnesium
D) Phosphate
ANSWER✔✨-: C
Rationale:
Option A is incorrect because sodium does not significantly interact with tetracycline absorption.
Option B is incorrect because potassium does not chelate with tetracyclines.
Option C is correct because tetracyclines chelate (bind) with divalent and trivalent cations including
calcium, iron, magnesium, and aluminum, forming insoluble complexes that reduce absorption and
efficacy. Patients should avoid dairy products, antacids, and iron supplements within 2-3 hours of
tetracycline administration.
Option D is incorrect because phosphate does not significantly interfere with tetracycline absorption.
Question 6
, A patient is prescribed metronidazole (Flagyl). What important patient education should the nurse
provide?
A) Take with dairy products
B) Avoid alcohol during therapy and for 48 hours after
C) Expect orange discoloration of urine
D) Take on an empty stomach only
ANSWER✔✨-: B
Rationale:
Option A is incorrect because dairy products are not specifically contraindicated with metronidazole.
Option B is correct because metronidazole causes a disulfiram-like reaction when combined with
alcohol, resulting in severe nausea, vomiting, flushing, tachycardia, and hypotension. Patients must
avoid all alcohol-containing products during therapy and for at least 48-72 hours after completion.
Option C is incorrect because orange discoloration of urine is associated with rifampin and
phenazopyridine, not metronidazole.
Option D is incorrect because metronidazole can be taken with food to reduce GI upset, though it can
also be taken on an empty stomach.
Question 7
Which antibiotic is contraindicated in children under 8 years of age due to tooth discoloration?
A) Amoxicillin
B) Tetracycline
C) Azithromycin
D) Cephalexin
ANSWER✔✨-: B
Rationale:
Option A is incorrect because amoxicillin is safe for use in children and is commonly prescribed for
pediatric infections.
Option B is correct because tetracyclines bind to calcium in developing teeth and bones, causing
permanent tooth discoloration (yellow-gray-brown) and enamel hypoplasia in children under 8 years old
and in pregnant women (affecting fetal teeth).
Option C is incorrect because azithromycin (a macrolide) is safe for pediatric use.
Option D is incorrect because cephalexin (a cephalosporin) is safe for children.
NURSING PHARMACOLOGY EXAM Practice
Questions with Detailed Rationales 2026
ACTUAL!!!
ANTIMICROBIALS SECTION
Question 1
What is the primary mechanism of action of beta-lactam antibiotics like penicillin?
A) Inhibits protein synthesis
B) Inhibits cell wall synthesis
C) Alters DNA replication
D) Blocks folic acid synthesis
ANSWER✔✨-: B
Rationale:
Option A is incorrect because protein synthesis inhibitors include drug classes like aminoglycosides,
tetracyclines, and macrolides, not beta-lactams.
Option B is correct because beta-lactams inhibit bacterial cell wall synthesis by binding to penicillin-
binding proteins, which prevents cross-linking of peptidoglycan chains, leading to cell wall weakness and
bacterial lysis.
Option C is incorrect because drugs that alter DNA replication include fluoroquinolones, not beta-lactam
antibiotics.
Option D is incorrect because folic acid synthesis is blocked by sulfonamides and trimethoprim, not
beta-lactams.
Question 2
Which generation of cephalosporins is most effective against Pseudomonas aeruginosa?
,A) First
B) Second
C) Third
D) Fourth
ANSWER✔✨-: D
Rationale:
Option A is incorrect because first-generation cephalosporins (e.g., cefazolin, cephalexin) have good
gram-positive coverage but limited gram-negative activity and no pseudomonal coverage.
Option B is incorrect because second-generation cephalosporins (e.g., cefuroxime, cefoxitin) have
increased gram-negative coverage but still lack activity against Pseudomonas.
Option C is partially correct as some third-generation cephalosporins like ceftazidime have anti-
pseudomonal activity, but they are not the most effective.
Option D is correct because fourth-generation cephalosporins like cefepime have broad-spectrum
activity including excellent coverage against Pseudomonas aeruginosa and are more stable against beta-
lactamases.
Question 3
Vancomycin is the drug of choice for:
A) MRSA infections
B) VRE infections
C) UTI
D) Syphilis
ANSWER✔✨-: A
Rationale:
Option A is correct because vancomycin is first-line therapy for MRSA (Methicillin-Resistant
Staphylococcus aureus) infections due to its excellent gram-positive spectrum and effectiveness against
resistant strains.
Option B is incorrect because VRE (Vancomycin-Resistant Enterococci) are, by definition, resistant to
vancomycin; alternatives include linezolid or daptomycin.
Option C is incorrect because UTIs are typically treated with agents like trimethoprim-sulfamethoxazole,
nitrofurantoin, or fluoroquinolones, not vancomycin.
Option D is incorrect because syphilis is treated with penicillin G, not vancomycin.
Question 4
,What is the peak concern with aminoglycosides?
A) Stevens-Johnson syndrome
B) Hepatotoxicity
C) Ototoxicity and nephrotoxicity
D) Anemia
ANSWER✔✨-: C
Rationale:
Option A is incorrect because Stevens-Johnson syndrome is more commonly associated with
sulfonamides, anticonvulsants, and allopurinol.
Option B is incorrect because hepatotoxicity is not a primary concern with aminoglycosides; it's more
associated with drugs like isoniazid, acetaminophen, and certain statins.
Option C is correct because aminoglycosides (gentamicin, tobramycin, amikacin) are well-known for
causing both nephrotoxicity (kidney damage) and ototoxicity (hearing loss and vestibular damage),
requiring careful monitoring of drug levels and renal function.
Option D is incorrect because anemia is not a characteristic adverse effect of aminoglycosides.
Question 5
What mineral interactions reduce the absorption of tetracyclines?
A) Sodium
B) Potassium
C) Calcium, iron, magnesium
D) Phosphate
ANSWER✔✨-: C
Rationale:
Option A is incorrect because sodium does not significantly interact with tetracycline absorption.
Option B is incorrect because potassium does not chelate with tetracyclines.
Option C is correct because tetracyclines chelate (bind) with divalent and trivalent cations including
calcium, iron, magnesium, and aluminum, forming insoluble complexes that reduce absorption and
efficacy. Patients should avoid dairy products, antacids, and iron supplements within 2-3 hours of
tetracycline administration.
Option D is incorrect because phosphate does not significantly interfere with tetracycline absorption.
Question 6
, A patient is prescribed metronidazole (Flagyl). What important patient education should the nurse
provide?
A) Take with dairy products
B) Avoid alcohol during therapy and for 48 hours after
C) Expect orange discoloration of urine
D) Take on an empty stomach only
ANSWER✔✨-: B
Rationale:
Option A is incorrect because dairy products are not specifically contraindicated with metronidazole.
Option B is correct because metronidazole causes a disulfiram-like reaction when combined with
alcohol, resulting in severe nausea, vomiting, flushing, tachycardia, and hypotension. Patients must
avoid all alcohol-containing products during therapy and for at least 48-72 hours after completion.
Option C is incorrect because orange discoloration of urine is associated with rifampin and
phenazopyridine, not metronidazole.
Option D is incorrect because metronidazole can be taken with food to reduce GI upset, though it can
also be taken on an empty stomach.
Question 7
Which antibiotic is contraindicated in children under 8 years of age due to tooth discoloration?
A) Amoxicillin
B) Tetracycline
C) Azithromycin
D) Cephalexin
ANSWER✔✨-: B
Rationale:
Option A is incorrect because amoxicillin is safe for use in children and is commonly prescribed for
pediatric infections.
Option B is correct because tetracyclines bind to calcium in developing teeth and bones, causing
permanent tooth discoloration (yellow-gray-brown) and enamel hypoplasia in children under 8 years old
and in pregnant women (affecting fetal teeth).
Option C is incorrect because azithromycin (a macrolide) is safe for pediatric use.
Option D is incorrect because cephalexin (a cephalosporin) is safe for children.
