Quiz 1: Core PK/PD Principles & Cell Wall Inhibitors (Part 1)
Advanced Pharmacology NP Board Exam Preparation • 10 Practice Questions & Rationales
1. A 72-year-old male with severe Pseudomonas aeruginosa pneumonia is receiving IV Cefepime. Based on time-
dependent bactericidal kinetics, which dosing strategy provides optimal clinical efficacy?
A. A single large bolus dose given once every 48 hours
B. A prolonged 3-to-4-hour infusion or continuous IV infusion
C. Rapid IV push over 2 minutes every 24 hours
D. Oral administration with high-fat meals
Correct Answer: B — Cephalosporins exhibit time-dependent killing. Efficacy is best predicted by the percentage of time serum levels
remain above the MIC (target >= 60% for cephalosporins). Extended or continuous infusions maximize time above MIC.
2. Which parameter is the primary determinant of a drug's ability to cross an intact blood-brain barrier into the central
nervous system (CNS)?
A. High minimum inhibitory concentration (MIC)
B. High degree of plasma protein binding
C. High lipid solubility and low molecular weight
D. High hydrophilic ionic charge
Correct Answer: C — Lipid-soluble drugs with low molecular weight and low protein binding penetrate the blood-brain barrier most
effectively.
3. A 25-year-old male presents with a painless genital ulcer (chancre). Serology confirms Treponema pallidum. Which
medication is the drug of choice as a single IM dose?
A. Benzathine Penicillin G
B. Ceftriaxone
C. Aztreonam
D. Vancomycin
Correct Answer: A — Benzathine Penicillin G given IM as a single depot dose is the drug of choice for primary and secondary
syphilis.
4. An elderly patient with Chronic Kidney Disease (CKD Stage 4) requires treatment for MSSA bacteremia. Which
antistaphylococcal penicillin requires NO dosage adjustment in renal impairment?
A. Ampicillin
B. Nafcillin
C. Piperacillin
D. Penicillin G
Correct Answer: B — Nafcillin and Oxacillin are cleared primarily via hepatic/biliary excretion and do not require dose reduction in
renal disease.
NP Advanced Pharmacology Exam Practice Questions Page 1 of 3
Advanced Pharmacology NP Board Exam Preparation • 10 Practice Questions & Rationales
1. A 72-year-old male with severe Pseudomonas aeruginosa pneumonia is receiving IV Cefepime. Based on time-
dependent bactericidal kinetics, which dosing strategy provides optimal clinical efficacy?
A. A single large bolus dose given once every 48 hours
B. A prolonged 3-to-4-hour infusion or continuous IV infusion
C. Rapid IV push over 2 minutes every 24 hours
D. Oral administration with high-fat meals
Correct Answer: B — Cephalosporins exhibit time-dependent killing. Efficacy is best predicted by the percentage of time serum levels
remain above the MIC (target >= 60% for cephalosporins). Extended or continuous infusions maximize time above MIC.
2. Which parameter is the primary determinant of a drug's ability to cross an intact blood-brain barrier into the central
nervous system (CNS)?
A. High minimum inhibitory concentration (MIC)
B. High degree of plasma protein binding
C. High lipid solubility and low molecular weight
D. High hydrophilic ionic charge
Correct Answer: C — Lipid-soluble drugs with low molecular weight and low protein binding penetrate the blood-brain barrier most
effectively.
3. A 25-year-old male presents with a painless genital ulcer (chancre). Serology confirms Treponema pallidum. Which
medication is the drug of choice as a single IM dose?
A. Benzathine Penicillin G
B. Ceftriaxone
C. Aztreonam
D. Vancomycin
Correct Answer: A — Benzathine Penicillin G given IM as a single depot dose is the drug of choice for primary and secondary
syphilis.
4. An elderly patient with Chronic Kidney Disease (CKD Stage 4) requires treatment for MSSA bacteremia. Which
antistaphylococcal penicillin requires NO dosage adjustment in renal impairment?
A. Ampicillin
B. Nafcillin
C. Piperacillin
D. Penicillin G
Correct Answer: B — Nafcillin and Oxacillin are cleared primarily via hepatic/biliary excretion and do not require dose reduction in
renal disease.
NP Advanced Pharmacology Exam Practice Questions Page 1 of 3
