NUR210 / NUR 210 Exam 3 (Latest 2026/2027): Principles of Pharmacology | Questions and Verified Answers | 100% Correct | Grade A - Galen 2026/2027
OBJECTIVE ASSESSMENT - EXAM
NUR210 / NUR 210 Exam 3 (Latest
2026/2027): Principles of Pharmacology |
Questions and Verified Answers | 100%
Correct | Grade A - Galen 2026/2027
75 75 2026/2027
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
• Pharmacokinetics & Pharmacodynamics • Endocrine & Metabolic Pharmacotherapy
• Drug Absorption & Distribution • Diabetes & Thyroid Medications
• Metabolism & Elimination Pathways • Infectious Disease Pharmacotherapy
• Drug Receptor Interactions • Antibiotics & Antivirals
• Cardiovascular & Renal Pharmacotherapy • Immunosuppressants
• Heart Failure & Hypertension Drugs • Neurologic & Psychiatric Pharmacotherapy
• Diuretics & Anticoagulants • Pain Management & Seizure Disorders
COVER PAGE - 1
,SECTION 1: Pharmacokinetics & Pharmacodynamics | 20%
QUESTION 1
A 68-year-old patient with chronic kidney disease is prescribed gentamicin for a gram-negative infection. The
nurse reviews the medication order and notes that the patient's creatinine clearance is 35 mL/min. The nurse
must determine which pharmacokinetic parameter is most significantly altered in this scenario.
A. Absorption from the GI tract
B. Distribution into adipose tissue
C. Renal elimination of the drug
D. Hepatic metabolism via CYP450 enzymes
Correct Answer: C
Rationale: Gentamicin is primarily eliminated unchanged by the kidneys. With a creatinine clearance of 35 mL/min, renal
elimination is significantly impaired, increasing the risk of nephrotoxicity and ototoxicity. Absorption and distribution are
less affected than elimination in this case.
QUESTION 2
A nurse is administering a loading dose of digoxin to a patient with atrial fibrillation. The patient has a serum
albumin level of 2.8 g/dL. The nurse recognizes that low albumin will affect which pharmacokinetic process
and necessitates a dosage adjustment.
A. Increased hepatic first-pass metabolism
B. Decreased protein binding and increased free drug
C. Enhanced renal tubular secretion
D. Reduced biliary excretion of metabolites
Correct Answer: B
Rationale: Digoxin is approximately 20-30% protein-bound, primarily to albumin. Low albumin levels decrease protein
binding, increasing the free fraction of the drug and enhancing pharmacodynamic effects, which increases the risk of
toxicity. The nurse must monitor for signs of digoxin toxicity.
QUESTION 3
A patient receiving intravenous morphine for postoperative pain reports relief within 5 minutes of
administration. The nurse explains that the rapid onset is due to the drug bypassing which physiological
barrier that oral medications must cross.
A. The glomerular filtration barrier
B. The blood-brain barrier
C. The hepatic first-pass effect
D. The placental barrier
Correct Answer: C
Rationale: IV morphine bypasses the hepatic first-pass effect, which metabolizes approximately 50-60% of an oral
morphine dose before it reaches systemic circulation. This is why IV morphine has a faster onset and greater
bioavailability compared to oral administration.
, QUESTION 4
A nurse is caring for a patient who has been taking phenytoin for seizure control for 3 years. The patient
recently started taking St. John's wort for depression. The nurse anticipates that the phenytoin serum levels
will decrease because St. John's wort induces which enzyme system.
A. CYP1A2 hepatic enzymes
B. CYP2C9 and CYP2C19 enzymes
C. CYP3A4 enzymes
D. UDP-glucuronosyltransferase enzymes
Correct Answer: C
Rationale: St. John's wort is a potent inducer of CYP3A4 enzymes, which metabolize phenytoin. Enzyme induction
increases the metabolism of phenytoin, decreasing its serum concentration and potentially leading to breakthrough
seizures. The nurse should monitor phenytoin levels closely.
QUESTION 5
A patient with hypertension is prescribed propranolol, a non-selective beta-blocker. The nurse explains that
the drug's therapeutic effect on blood pressure is primarily achieved through which pharmacodynamic
mechanism.
A. Blockade of angiotensin II receptors in the kidney
B. Inhibition of calcium influx into vascular smooth muscle
C. Antagonism of beta-1 adrenergic receptors in the heart
D. Stimulation of alpha-2 adrenergic receptors in the CNS
Correct Answer: C
Rationale: Propranolol is a non-selective beta-blocker that antagonizes beta-1 adrenergic receptors in the heart, reducing
heart rate, contractility, and cardiac output. This decrease in cardiac output is the primary mechanism by which
beta-blockers lower blood pressure.
QUESTION 6
A patient with a history of alcohol use disorder is admitted for surgery and requires general anesthesia. The
anesthesiologist notes that the patient will require higher doses of anesthetic agents. This increased
requirement is explained by which pharmacokinetic principle.
A. Enzyme inhibition by alcohol metabolites
B. Cross-tolerance due to chronic CNS depression
C. Increased protein binding in the plasma
D. Enhanced renal clearance of anesthetic agents
Correct Answer: B
Rationale: Chronic alcohol use causes cross-tolerance to other CNS depressants, including general anesthetics. The
patient has developed adaptive changes in GABA and NMDA receptors, requiring higher doses of anesthetic agents to
achieve the same pharmacodynamic effect.
OBJECTIVE ASSESSMENT - EXAM
NUR210 / NUR 210 Exam 3 (Latest
2026/2027): Principles of Pharmacology |
Questions and Verified Answers | 100%
Correct | Grade A - Galen 2026/2027
75 75 2026/2027
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
• Pharmacokinetics & Pharmacodynamics • Endocrine & Metabolic Pharmacotherapy
• Drug Absorption & Distribution • Diabetes & Thyroid Medications
• Metabolism & Elimination Pathways • Infectious Disease Pharmacotherapy
• Drug Receptor Interactions • Antibiotics & Antivirals
• Cardiovascular & Renal Pharmacotherapy • Immunosuppressants
• Heart Failure & Hypertension Drugs • Neurologic & Psychiatric Pharmacotherapy
• Diuretics & Anticoagulants • Pain Management & Seizure Disorders
COVER PAGE - 1
,SECTION 1: Pharmacokinetics & Pharmacodynamics | 20%
QUESTION 1
A 68-year-old patient with chronic kidney disease is prescribed gentamicin for a gram-negative infection. The
nurse reviews the medication order and notes that the patient's creatinine clearance is 35 mL/min. The nurse
must determine which pharmacokinetic parameter is most significantly altered in this scenario.
A. Absorption from the GI tract
B. Distribution into adipose tissue
C. Renal elimination of the drug
D. Hepatic metabolism via CYP450 enzymes
Correct Answer: C
Rationale: Gentamicin is primarily eliminated unchanged by the kidneys. With a creatinine clearance of 35 mL/min, renal
elimination is significantly impaired, increasing the risk of nephrotoxicity and ototoxicity. Absorption and distribution are
less affected than elimination in this case.
QUESTION 2
A nurse is administering a loading dose of digoxin to a patient with atrial fibrillation. The patient has a serum
albumin level of 2.8 g/dL. The nurse recognizes that low albumin will affect which pharmacokinetic process
and necessitates a dosage adjustment.
A. Increased hepatic first-pass metabolism
B. Decreased protein binding and increased free drug
C. Enhanced renal tubular secretion
D. Reduced biliary excretion of metabolites
Correct Answer: B
Rationale: Digoxin is approximately 20-30% protein-bound, primarily to albumin. Low albumin levels decrease protein
binding, increasing the free fraction of the drug and enhancing pharmacodynamic effects, which increases the risk of
toxicity. The nurse must monitor for signs of digoxin toxicity.
QUESTION 3
A patient receiving intravenous morphine for postoperative pain reports relief within 5 minutes of
administration. The nurse explains that the rapid onset is due to the drug bypassing which physiological
barrier that oral medications must cross.
A. The glomerular filtration barrier
B. The blood-brain barrier
C. The hepatic first-pass effect
D. The placental barrier
Correct Answer: C
Rationale: IV morphine bypasses the hepatic first-pass effect, which metabolizes approximately 50-60% of an oral
morphine dose before it reaches systemic circulation. This is why IV morphine has a faster onset and greater
bioavailability compared to oral administration.
, QUESTION 4
A nurse is caring for a patient who has been taking phenytoin for seizure control for 3 years. The patient
recently started taking St. John's wort for depression. The nurse anticipates that the phenytoin serum levels
will decrease because St. John's wort induces which enzyme system.
A. CYP1A2 hepatic enzymes
B. CYP2C9 and CYP2C19 enzymes
C. CYP3A4 enzymes
D. UDP-glucuronosyltransferase enzymes
Correct Answer: C
Rationale: St. John's wort is a potent inducer of CYP3A4 enzymes, which metabolize phenytoin. Enzyme induction
increases the metabolism of phenytoin, decreasing its serum concentration and potentially leading to breakthrough
seizures. The nurse should monitor phenytoin levels closely.
QUESTION 5
A patient with hypertension is prescribed propranolol, a non-selective beta-blocker. The nurse explains that
the drug's therapeutic effect on blood pressure is primarily achieved through which pharmacodynamic
mechanism.
A. Blockade of angiotensin II receptors in the kidney
B. Inhibition of calcium influx into vascular smooth muscle
C. Antagonism of beta-1 adrenergic receptors in the heart
D. Stimulation of alpha-2 adrenergic receptors in the CNS
Correct Answer: C
Rationale: Propranolol is a non-selective beta-blocker that antagonizes beta-1 adrenergic receptors in the heart, reducing
heart rate, contractility, and cardiac output. This decrease in cardiac output is the primary mechanism by which
beta-blockers lower blood pressure.
QUESTION 6
A patient with a history of alcohol use disorder is admitted for surgery and requires general anesthesia. The
anesthesiologist notes that the patient will require higher doses of anesthetic agents. This increased
requirement is explained by which pharmacokinetic principle.
A. Enzyme inhibition by alcohol metabolites
B. Cross-tolerance due to chronic CNS depression
C. Increased protein binding in the plasma
D. Enhanced renal clearance of anesthetic agents
Correct Answer: B
Rationale: Chronic alcohol use causes cross-tolerance to other CNS depressants, including general anesthetics. The
patient has developed adaptive changes in GABA and NMDA receptors, requiring higher doses of anesthetic agents to
achieve the same pharmacodynamic effect.
