NR 566 Midterm Exam Chamberlain Advanced Pharmacology
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NR 566 Midterm Exam Chamberlain Advanced Pharmacology
Exam Coverage (10 Points)
1. Pharmacokinetics & Pharmacodynamics: Age-related changes in absorption,
distribution, metabolism, and excretion (ADME); drug-receptor interactions; therapeutic
index.
2. Special Populations: Pediatric and geriatric prescribing considerations,
pregnancy/lactation risk categories, Beers Criteria.
3. Antimicrobial Therapy: Penicillins, cephalosporins, carbapenems, vancomycin,
tetracyclines, macrolides, fluoroquinolones, sulfonamides.
4. Antifungal Agents: Amphotericin B, azoles (fluconazole, itraconazole), echinocandins
(caspofungin), griseofulvin, nystatin.
5. Antiviral Agents: Acyclovir, oseltamivir, antiretroviral therapy (NRTIs, PIs, NNRTIs,
integrase inhibitors).
6. Obesity Pharmacotherapy: Phentermine/topiramate, orlistat, naltrexone/bupropion,
liraglutide, lorcaserin.
7. Endocrine & Hormonal Agents: Hormone therapy, contraception, osteoporosis
management, thyroid agents.
8. Cardiovascular & Renal Pharmacology: Antihypertensives, diuretics, digoxin,
anticoagulants, lipid-lowering agents.
9. Gastrointestinal & Genitourinary Agents: Proton pump inhibitors, antiemetics, BPH
medications, UTI treatments.
10. Drug Interactions & Safety: CYP450 inducers/inhibitors, adverse drug reactions, black
box warnings, antidotes.
1. A 72-year-old patient with a history of heart failure and reduced renal function is
prescribed digoxin. The patient's serum potassium level is 3.2 mEq/L. The nurse practitioner
recognizes that this electrolyte imbalance increases the risk for which of the following?
A. Digoxin ineffectiveness
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B. Digoxin toxicity
C. Hypercalcemia
D. Hypertension
Correct Answer: B
Rationale: Hypokalemia enhances digoxin binding to the myocardial Na+/K+-ATPase,
potentiating its toxic effects even at therapeutic serum levels. Potassium should be normalized
promptly, and digoxin levels should be monitored closely .
2. Which antifungal agent requires a patient to avoid simvastatin due to the risk of
rhabdomyolysis from CYP3A4 inhibition?
A. Fluconazole
B. Itraconazole
C. Terbinafine
D. Nystatin
Correct Answer: B
Rationale: Itraconazole potently inhibits the CYP3A4 enzyme, significantly increasing plasma
concentrations of HMG-CoA reductase inhibitors like simvastatin, leading to myopathy and
rhabdomyolysis. Prescribers must either switch to pravastatin (which is not metabolized by
CYP3A4) or select an alternative antifungal agent .
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3. A 28-year-old female with a history of migraine without aura is prescribed sumatriptan. The
nurse practitioner educates the patient that this medication works as a selective agonist at
which receptor?
A. Dopamine D2 receptor
B. Serotonin 5-HT1B/1D receptor
C. Gamma-aminobutyric acid (GABA) receptor
D. N-methyl-D-aspartate (NMDA) receptor
Correct Answer: B
Rationale: Sumatriptan is a selective agonist at serotonin 5-HT1B/1D receptors, which leads to
cranial vasoconstriction and inhibition of pro-inflammatory neuropeptide release, effectively
aborting migraine headaches.
4. A patient being treated with IV acyclovir develops rising creatinine and decreased urine
output. What is the priority nursing action?
A. Hold the dose and notify the prescriber.
B. Slow the infusion rate to 30 minutes.
C. Administer a loop diuretic.
D. Switch to oral acyclovir immediately.
Correct Answer: A
Rationale: IV acyclovir carries a risk of renal failure, especially in patients with renal disease or
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dehydration. Worsening renal function warrants holding the drug and contacting the prescriber
for possible dose adjustment or discontinuation .
5. A 62-year-old patient with benign prostatic hyperplasia and hypertension is prescribed
doxazosin. The nurse practitioner counsels the patient about which potential adverse effect?
A. Tachycardia
B. Orthostatic hypotension
C. Hypokalemia
D. Bronchospasm
Correct Answer: B
Rationale: Alpha-1 blockers like doxazosin relax vascular and prostatic smooth muscle, causing
vasodilation and postural hypotension, especially after the first dose. Patients should be advised
to rise slowly from sitting or lying positions .
6. Which medication is associated with a black box warning for lactic acidosis and hepatic
steatosis in patients being treated for HIV?
A. Efavirenz
B. Tenofovir
C. Ritonavir
D. Dolutegravir