D441 Pharmacology Final Exam Practice 2026 |WGU
1. Which pharmacokinetic process is primarily affected when a drug is
administered via the intravenous route?
A. Distribution
B. Absorption
C. Metabolism
D. Excretion
Answer: B
Rationale: Intravenous administration bypasses the absorption process because the drug
is placed directly into the systemic circulation.
2. A patient with a history of heart failure is prescribed Digoxin. Which
electrolyte imbalance increases the risk of Digoxin toxicity?
A. Hyperkalemia
B. Hypokalemia
C. Hypernatremia
D. Hyponatremia
Answer: B
Rationale: Hypokalemia (low potassium) sensitizes the myocardium to digoxin,
significantly increasing the risk of toxicity.
,3. What is the primary mechanism of action of ACE inhibitors such as Lisinopril?
A. Blocking the conversion of Angiotensin I to Angiotensin II
B. Directly dilating the venous system
C. Increasing the heart rate to improve cardiac output
D. Inhibiting the release of renin from the kidneys
Answer: A
Rationale: ACE inhibitors block the Angiotensin-Converting Enzyme, preventing the
production of Angiotensin II, which is a potent vasoconstrictor.
4. Which medication is considered the ‘gold standard’ for reversing opioid-
induced respiratory depression?
A. Naloxone
B. Protamine Sulfate
C. Flumazenil
D. Atropine
Answer: A
Rationale: Naloxone is an opioid antagonist used to rapidly reverse the effects of opioids,
particularly respiratory depression.
5. When educating a patient about taking Alendronate for osteoporosis, the
nurse should emphasize which instruction?
A. Take the medication with food to prevent GI upset
B. Take the medication right before bedtime
C. Remain upright for at least 30 minutes after taking the pill
D. Crush the tablet if it is too difficult to swallow
Answer: C
Rationale: Alendronate can cause severe esophageal irritation; patients must stay upright
and take it with a full glass of water on an empty stomach.
, 6. Which of the following is a common side effect of HMG-CoA reductase
inhibitors (Statins)?
A. Peripheral edema
B. Persistent dry cough
C. Muscle pain or weakness
D. Gingival hyperplasia
Answer: C
Rationale: Myalgia and rhabdomyolysis are serious potential side effects of statin therapy
and should be reported immediately.
7. What is the mechanism of action of Warfarin?
A. Inhibiting Vitamin K-dependent clotting factors
B. Inhibiting the action of thrombin
C. Activating plasminogen to dissolve clots
D. Inhibiting platelet aggregation via COX-1
Answer: A
Rationale: Warfarin interferes with the synthesis of Vitamin K-dependent clotting factors
(II, VII, IX, X).
8. A patient is prescribed Furosemide. Which lab value is the most critical to
monitor?
A. Serum Creatinine
B. Hemoglobin A1C
C. White Blood Cell count
D. Serum Potassium
Answer: D
Rationale: Furosemide is a loop diuretic that causes significant potassium loss, placing the
patient at risk for hypokalemia.
1. Which pharmacokinetic process is primarily affected when a drug is
administered via the intravenous route?
A. Distribution
B. Absorption
C. Metabolism
D. Excretion
Answer: B
Rationale: Intravenous administration bypasses the absorption process because the drug
is placed directly into the systemic circulation.
2. A patient with a history of heart failure is prescribed Digoxin. Which
electrolyte imbalance increases the risk of Digoxin toxicity?
A. Hyperkalemia
B. Hypokalemia
C. Hypernatremia
D. Hyponatremia
Answer: B
Rationale: Hypokalemia (low potassium) sensitizes the myocardium to digoxin,
significantly increasing the risk of toxicity.
,3. What is the primary mechanism of action of ACE inhibitors such as Lisinopril?
A. Blocking the conversion of Angiotensin I to Angiotensin II
B. Directly dilating the venous system
C. Increasing the heart rate to improve cardiac output
D. Inhibiting the release of renin from the kidneys
Answer: A
Rationale: ACE inhibitors block the Angiotensin-Converting Enzyme, preventing the
production of Angiotensin II, which is a potent vasoconstrictor.
4. Which medication is considered the ‘gold standard’ for reversing opioid-
induced respiratory depression?
A. Naloxone
B. Protamine Sulfate
C. Flumazenil
D. Atropine
Answer: A
Rationale: Naloxone is an opioid antagonist used to rapidly reverse the effects of opioids,
particularly respiratory depression.
5. When educating a patient about taking Alendronate for osteoporosis, the
nurse should emphasize which instruction?
A. Take the medication with food to prevent GI upset
B. Take the medication right before bedtime
C. Remain upright for at least 30 minutes after taking the pill
D. Crush the tablet if it is too difficult to swallow
Answer: C
Rationale: Alendronate can cause severe esophageal irritation; patients must stay upright
and take it with a full glass of water on an empty stomach.
, 6. Which of the following is a common side effect of HMG-CoA reductase
inhibitors (Statins)?
A. Peripheral edema
B. Persistent dry cough
C. Muscle pain or weakness
D. Gingival hyperplasia
Answer: C
Rationale: Myalgia and rhabdomyolysis are serious potential side effects of statin therapy
and should be reported immediately.
7. What is the mechanism of action of Warfarin?
A. Inhibiting Vitamin K-dependent clotting factors
B. Inhibiting the action of thrombin
C. Activating plasminogen to dissolve clots
D. Inhibiting platelet aggregation via COX-1
Answer: A
Rationale: Warfarin interferes with the synthesis of Vitamin K-dependent clotting factors
(II, VII, IX, X).
8. A patient is prescribed Furosemide. Which lab value is the most critical to
monitor?
A. Serum Creatinine
B. Hemoglobin A1C
C. White Blood Cell count
D. Serum Potassium
Answer: D
Rationale: Furosemide is a loop diuretic that causes significant potassium loss, placing the
patient at risk for hypokalemia.
