NCLEX RN Exam Bank: Antibiotic Stewardship, Classes, Resistance & Safety Monitoring

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NCLEX RN Exam Bank: Antibiotic Stewardship,
Classifications, Monitoring & Resistance, beginning with




Table of Contents
Subtopic 1: Antibiotic Classifications and Mechanisms of Action (Q1–Q20) ...................... 2
Subtopic 2: Antibiotic Dosing, Pharmacokinetics, and Therapeutic Monitoring (Q21–Q40) 11
Subtopic 3: Antimicrobial Resistance, Mechanisms, Trends, and Prevention (Q41–Q60) .. 20
Subtopic 4: Antibiotic Side Effects, Hypersensitivity, and Patient Safety (Q61–Q80) ......... 29
Subtopic 5: Patient-Specific Factors Influencing Antibiotic Therapy ................................ 39
Subtopic 6: Antibiotic Use in Immunocompromised and High-Risk Populations .............. 47
Subtopic 7: Adverse Effects, Drug Interactions, and Toxicities in Antibiotic Therapy ......... 56
Subtopic 8: Antibiotic Use in Immunocompromised Patients ......................................... 64
Subtopic 9: Role of the Nurse in Multidrug-Resistant Organisms (MDRO) Control ............ 72
Subtopic 10: Infection Control Policy, Prescribing Protocols, and Multidrug-Resistant
Pathogen Response .................................................................................................... 81

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Subtopic 1: Antibiotic Classifications and Mechanisms of
Action (Q1–Q20)
Question 1:

Which class of antibiotics is known to inhibit bacterial cell wall synthesis?



A. Macrolides

B. Beta-lactams

C. Tetracyclines

D. Aminoglycosides



Correct Answer: B. Beta-lactams

Rationale: Beta-lactam antibiotics, including penicillins and cephalosporins, inhibit
bacterial cell wall synthesis by binding to penicillin-binding proteins, leading to cell lysis.



Question 2:

A nurse understands that aminoglycosides are primarily effective against:



A. Gram-positive cocci

B. Fungal infections

C. Gram-negative bacilli

D. Anaerobic bacteria



Correct Answer: C. Gram-negative bacilli

Rationale: Aminoglycosides are potent against aerobic gram-negative bacteria, making
them effective in treating infections such as Pseudomonas and E. coli.

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Question 3:

Which antibiotic class interferes with bacterial protein synthesis at the 30S ribosomal
subunit?



A. Macrolides

B. Tetracyclines

C. Quinolones

D. Glycopeptides



Correct Answer: B. Tetracyclines

Rationale: Tetracyclines bind to the 30S ribosomal subunit, preventing the addition of
amino acids to the growing peptide chain, halting protein synthesis.



Question 4:

Fluoroquinolones act primarily by inhibiting:



A. DNA polymerase

B. DNA gyrase and topoisomerase IV

C. Cell wall synthesis

D. Ribosomal activity



Correct Answer: B. DNA gyrase and topoisomerase IV

Rationale: Fluoroquinolones interfere with bacterial DNA replication and transcription by
targeting enzymes essential for DNA supercoiling.



Question 5:

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Which antibiotic class is contraindicated in children under 8 years due to risk of tooth
discoloration?



A. Tetracyclines

B. Macrolides

C. Cephalosporins

D. Sulfonamides



Correct Answer: A. Tetracyclines

Rationale: Tetracyclines deposit in developing bones and teeth, leading to permanent
discoloration and enamel hypoplasia in young children.



Question 6:

Vancomycin is best classified as:



A. A macrolide

B. A beta-lactam

C. A fluoroquinolone

D. A glycopeptide



Correct Answer: D. A glycopeptide

Rationale: Vancomycin is a glycopeptide that inhibits bacterial cell wall synthesis by
binding to D-Ala-D-Ala terminus of cell wall precursors.



Question 7:

Which antibiotic class disrupts folic acid synthesis in bacteria?