D441 Pharmacology Midterm & Final Exam Comprehensive Quiz 2026
WGU
1. Which pharmacokinetic process is primarily affected by the first-pass effect
when a drug is administered orally?
A. Distribution
B. Metabolism
C. Excretion
D. Absorption
Answer: B
Rationale: The first-pass effect refers to the rapid hepatic metabolism of an oral drug
before it reaches the systemic circulation, which significantly reduces the concentration of
the drug.
2. A patient is prescribed Lisinopril for hypertension. Which side effect should
the nurse instruct the patient to report immediately?
A. Constipation
B. Dry, hacking cough
C. Increased appetite
D. Yellowing of the skin
Answer: B
Rationale: A dry, persistent cough is a common side effect of ACE inhibitors like Lisinopril
due to the accumulation of bradykinin.
,3. Which laboratory value is most critical to monitor for a patient receiving
Warfarin therapy?
A. INR
B. aPTT
C. Serum Creatinine
D. White Blood Cell Count
Answer: A
Rationale: The International Normalized Ratio (INR) is the standard measurement used to
monitor the effectiveness and safety of Warfarin therapy.
4. What is the antidote for a Heparin overdose?
A. Vitamin K
B. Protamine sulfate
C. Flumazenil
D. Naloxone
Answer: B
Rationale: Protamine sulfate is the specific antagonist used to neutralize the anticoagulant
effects of heparin.
5. A patient is receiving Digoxin for heart failure. Which electrolyte imbalance
increases the risk of Digoxin toxicity?
A. Hyperkalemia
B. Hyponatremia
C. Hypercalcemia
D. Hypokalemia
Answer: D
Rationale: Low potassium levels (hypokalemia) increase the risk of digoxin toxicity
because digoxin and potassium compete for the same binding sites on the Na+/K+ ATPase
pump.
, 6. Which type of insulin should the nurse expect to peak within 30 minutes to 3
hours of administration?
A. Regular Insulin
B. NPH Insulin
C. Insulin Glargine
D. Insulin Detemir
Answer: A
Rationale: Regular insulin is short-acting and typically peaks 2 to 3 hours after
subcutaneous injection.
7. When should a patient take Levothyroxine for the treatment of
hypothyroidism?
A. In the morning on an empty stomach
B. Immediately before bed
C. With a high-fiber breakfast
D. Only when feeling symptomatic
Answer: A
Rationale: Levothyroxine should be taken on an empty stomach, usually 30-60 minutes
before breakfast, to ensure optimal absorption.
8. A patient with a history of asthma is prescribed Propranolol. Why might this
medication be contraindicated?
A. It causes excessive coughing
B. It causes tachycardia
C. It leads to rebound hypertension
D. It can cause bronchoconstriction
Answer: D
Rationale: Propranolol is a non-selective beta-blocker that can block beta-2 receptors in
the lungs, potentially causing life-threatening bronchoconstriction in patients with asthma.
WGU
1. Which pharmacokinetic process is primarily affected by the first-pass effect
when a drug is administered orally?
A. Distribution
B. Metabolism
C. Excretion
D. Absorption
Answer: B
Rationale: The first-pass effect refers to the rapid hepatic metabolism of an oral drug
before it reaches the systemic circulation, which significantly reduces the concentration of
the drug.
2. A patient is prescribed Lisinopril for hypertension. Which side effect should
the nurse instruct the patient to report immediately?
A. Constipation
B. Dry, hacking cough
C. Increased appetite
D. Yellowing of the skin
Answer: B
Rationale: A dry, persistent cough is a common side effect of ACE inhibitors like Lisinopril
due to the accumulation of bradykinin.
,3. Which laboratory value is most critical to monitor for a patient receiving
Warfarin therapy?
A. INR
B. aPTT
C. Serum Creatinine
D. White Blood Cell Count
Answer: A
Rationale: The International Normalized Ratio (INR) is the standard measurement used to
monitor the effectiveness and safety of Warfarin therapy.
4. What is the antidote for a Heparin overdose?
A. Vitamin K
B. Protamine sulfate
C. Flumazenil
D. Naloxone
Answer: B
Rationale: Protamine sulfate is the specific antagonist used to neutralize the anticoagulant
effects of heparin.
5. A patient is receiving Digoxin for heart failure. Which electrolyte imbalance
increases the risk of Digoxin toxicity?
A. Hyperkalemia
B. Hyponatremia
C. Hypercalcemia
D. Hypokalemia
Answer: D
Rationale: Low potassium levels (hypokalemia) increase the risk of digoxin toxicity
because digoxin and potassium compete for the same binding sites on the Na+/K+ ATPase
pump.
, 6. Which type of insulin should the nurse expect to peak within 30 minutes to 3
hours of administration?
A. Regular Insulin
B. NPH Insulin
C. Insulin Glargine
D. Insulin Detemir
Answer: A
Rationale: Regular insulin is short-acting and typically peaks 2 to 3 hours after
subcutaneous injection.
7. When should a patient take Levothyroxine for the treatment of
hypothyroidism?
A. In the morning on an empty stomach
B. Immediately before bed
C. With a high-fiber breakfast
D. Only when feeling symptomatic
Answer: A
Rationale: Levothyroxine should be taken on an empty stomach, usually 30-60 minutes
before breakfast, to ensure optimal absorption.
8. A patient with a history of asthma is prescribed Propranolol. Why might this
medication be contraindicated?
A. It causes excessive coughing
B. It causes tachycardia
C. It leads to rebound hypertension
D. It can cause bronchoconstriction
Answer: D
Rationale: Propranolol is a non-selective beta-blocker that can block beta-2 receptors in
the lungs, potentially causing life-threatening bronchoconstriction in patients with asthma.
