WGU Pharmacology D441 OA NEWEST VERSION 2024/2025
ACTUAL QUESTION AND CORRECT DETAILED VERIFIED
ANSWERS FROM VERIFIED SOURCES RATED A GRADE
Course
WGU Pharmacology D441 OA
1. Which phase of pharmacokinetics describes the movement of a drug from the
bloodstream into body tissues?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
Answer: B. Distribution
Rationale: Distribution refers to the transport of a medication from systemic circulation into
tissues, organs, and target cells. Factors such as protein binding, blood flow, and lipid solubility
influence this process.
2. A patient taking lisinopril should be monitored primarily for which adverse effect?
A. Hypokalemia
B. Persistent dry cough
C. Hyperglycemia
D. Bradycardia
Answer: B. Persistent dry cough
Rationale: ACE inhibitors commonly increase bradykinin levels, leading to a dry, persistent
cough. Hyperkalemia—not hypokalemia—is another important adverse effect.
3. Which medication is classified as a loop diuretic?
A. Hydrochlorothiazide
B. Furosemide
C. Spironolactone
D. Mannitol
,Answer: B. Furosemide
Rationale: Furosemide inhibits sodium and chloride reabsorption in the loop of Henle,
producing potent diuresis.
4. A patient receiving warfarin should have which laboratory value monitored routinely?
A. aPTT
B. INR
C. Platelet count only
D. Troponin
Answer: B. INR
Rationale: INR standardizes prothrombin time and is used to monitor warfarin therapy and
adjust dosing.
5. Which insulin has the fastest onset of action?
A. Glargine
B. Detemir
C. Lispro
D. NPH
Answer: C. Lispro
Rationale: Rapid-acting insulins such as lispro begin working within approximately 15 minutes.
6. Beta blockers lower blood pressure primarily by:
A. Increasing sodium excretion
B. Blocking beta-adrenergic receptors
C. Relaxing skeletal muscle
D. Stimulating insulin release
Answer: B. Blocking beta-adrenergic receptors
Rationale: Beta blockers decrease heart rate, myocardial contractility, and cardiac output.
,7. Before administering digoxin, the nurse should FIRST assess:
A. Respiratory rate
B. Apical pulse
C. Blood glucose
D. Temperature
Answer: B. Apical pulse
Rationale: Digoxin slows cardiac conduction. The medication is typically withheld if the heart
rate is below the prescribed threshold.
8. Which electrolyte abnormality increases the risk of digoxin toxicity?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia only
D. Hypermagnesemia
Answer: B. Hypokalemia
Rationale: Low potassium enhances digoxin's effects on cardiac tissue, increasing toxicity risk.
9. Which medication is commonly prescribed for acute asthma symptoms?
A. Salmeterol
B. Albuterol
C. Fluticasone
D. Montelukast
Answer: B. Albuterol
Rationale: Albuterol is a short-acting beta₂ agonist used as a rescue bronchodilator.
10. A patient taking metformin should temporarily stop the medication before receiving
iodinated contrast because of the risk of:
, A. Hypoglycemia
B. Lactic acidosis
C. Hypertension
D. Hyperkalemia
Answer: B. Lactic acidosis
Rationale: Contrast-induced kidney injury may increase metformin accumulation, raising the
risk of lactic acidosis.
11. Which medication requires patients to avoid grapefruit juice?
A. Amlodipine
B. Simvastatin
C. Acetaminophen
D. Aspirin
Answer: B. Simvastatin
Rationale: Grapefruit inhibits CYP3A4, increasing simvastatin concentrations and the risk of
muscle toxicity.
12. The antidote for opioid overdose is:
A. Flumazenil
B. Naloxone
C. Protamine sulfate
D. Vitamin K
Answer: B. Naloxone
Rationale: Naloxone rapidly reverses opioid-induced respiratory depression by competitively
blocking opioid receptors.
13. Which laboratory value should be monitored during statin therapy?
A. Liver enzymes
ACTUAL QUESTION AND CORRECT DETAILED VERIFIED
ANSWERS FROM VERIFIED SOURCES RATED A GRADE
Course
WGU Pharmacology D441 OA
1. Which phase of pharmacokinetics describes the movement of a drug from the
bloodstream into body tissues?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
Answer: B. Distribution
Rationale: Distribution refers to the transport of a medication from systemic circulation into
tissues, organs, and target cells. Factors such as protein binding, blood flow, and lipid solubility
influence this process.
2. A patient taking lisinopril should be monitored primarily for which adverse effect?
A. Hypokalemia
B. Persistent dry cough
C. Hyperglycemia
D. Bradycardia
Answer: B. Persistent dry cough
Rationale: ACE inhibitors commonly increase bradykinin levels, leading to a dry, persistent
cough. Hyperkalemia—not hypokalemia—is another important adverse effect.
3. Which medication is classified as a loop diuretic?
A. Hydrochlorothiazide
B. Furosemide
C. Spironolactone
D. Mannitol
,Answer: B. Furosemide
Rationale: Furosemide inhibits sodium and chloride reabsorption in the loop of Henle,
producing potent diuresis.
4. A patient receiving warfarin should have which laboratory value monitored routinely?
A. aPTT
B. INR
C. Platelet count only
D. Troponin
Answer: B. INR
Rationale: INR standardizes prothrombin time and is used to monitor warfarin therapy and
adjust dosing.
5. Which insulin has the fastest onset of action?
A. Glargine
B. Detemir
C. Lispro
D. NPH
Answer: C. Lispro
Rationale: Rapid-acting insulins such as lispro begin working within approximately 15 minutes.
6. Beta blockers lower blood pressure primarily by:
A. Increasing sodium excretion
B. Blocking beta-adrenergic receptors
C. Relaxing skeletal muscle
D. Stimulating insulin release
Answer: B. Blocking beta-adrenergic receptors
Rationale: Beta blockers decrease heart rate, myocardial contractility, and cardiac output.
,7. Before administering digoxin, the nurse should FIRST assess:
A. Respiratory rate
B. Apical pulse
C. Blood glucose
D. Temperature
Answer: B. Apical pulse
Rationale: Digoxin slows cardiac conduction. The medication is typically withheld if the heart
rate is below the prescribed threshold.
8. Which electrolyte abnormality increases the risk of digoxin toxicity?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia only
D. Hypermagnesemia
Answer: B. Hypokalemia
Rationale: Low potassium enhances digoxin's effects on cardiac tissue, increasing toxicity risk.
9. Which medication is commonly prescribed for acute asthma symptoms?
A. Salmeterol
B. Albuterol
C. Fluticasone
D. Montelukast
Answer: B. Albuterol
Rationale: Albuterol is a short-acting beta₂ agonist used as a rescue bronchodilator.
10. A patient taking metformin should temporarily stop the medication before receiving
iodinated contrast because of the risk of:
, A. Hypoglycemia
B. Lactic acidosis
C. Hypertension
D. Hyperkalemia
Answer: B. Lactic acidosis
Rationale: Contrast-induced kidney injury may increase metformin accumulation, raising the
risk of lactic acidosis.
11. Which medication requires patients to avoid grapefruit juice?
A. Amlodipine
B. Simvastatin
C. Acetaminophen
D. Aspirin
Answer: B. Simvastatin
Rationale: Grapefruit inhibits CYP3A4, increasing simvastatin concentrations and the risk of
muscle toxicity.
12. The antidote for opioid overdose is:
A. Flumazenil
B. Naloxone
C. Protamine sulfate
D. Vitamin K
Answer: B. Naloxone
Rationale: Naloxone rapidly reverses opioid-induced respiratory depression by competitively
blocking opioid receptors.
13. Which laboratory value should be monitored during statin therapy?
A. Liver enzymes
