D441 Pharmacology Comprehensive Final Exam Review 2026 |WGU
1. Which process describes the movement of a drug from its site of
administration into the bloodstream?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
Answer: C
Rationale: Absorption is the process by which a drug enters the systemic circulation from
its administration site.
2. Which organ is primarily responsible for the ‘first-pass effect’ in oral drug
administration?
A. Kidneys
B. Lungs
C. Liver
D. Spleen
Answer: C
Rationale: The first-pass effect occurs when the liver metabolizes a significant portion of
an oral medication before it reaches the systemic circulation.
,3. A drug with a high therapeutic index is considered to be:
A. Highly toxic
B. Relatively safe
C. Difficult to monitor
D. Rapidly excreted
Answer: B
Rationale: A high therapeutic index means there is a wide margin between the effective
dose and the toxic dose, making the drug safer.
4. Which of the following is a classic side effect of ACE inhibitors like lisinopril?
A. Persistent dry cough
B. Hypokalemia
C. Tachycardia
D. Peripheral edema
Answer: A
Rationale: ACE inhibitors can cause a dry, hacking cough due to the accumulation of
bradykinin in the lungs.
5. The nurse is preparing to administer digoxin. Which vital sign must be
checked for one full minute before administration?
A. Blood pressure
B. Apical pulse
C. Respiratory rate
D. Oxygen saturation
Answer: B
Rationale: Digoxin is a positive inotrope and negative chronotrope; the apical pulse must
be at least 60 bpm to safely administer the dose.
, 6. Which medication is commonly used as an antidote for a heparin overdose?
A. Vitamin K
B. Flumazenil
C. Protamine sulfate
D. Naloxone
Answer: C
Rationale: Protamine sulfate binds with heparin to form a stable salt, neutralizing its
anticoagulant effect.
7. Patients taking warfarin (Coumadin) should be instructed to maintain a
consistent intake of which vitamin?
A. Vitamin C
B. Vitamin D
C. Vitamin B12
D. Vitamin K
Answer: D
Rationale: Warfarin works by inhibiting Vitamin K-dependent clotting factors; sudden
changes in Vitamin K intake can disrupt anticoagulation therapy.
8. Which of the following describes the mechanism of action of HMG-CoA
reductase inhibitors (Statins)?
A. Inhibiting cholesterol absorption in the gut
B. Binding bile acids in the intestine
C. Increasing the breakdown of LDL in the bloodstream
D. Inhibiting an enzyme responsible for cholesterol synthesis in the liver
Answer: D
Rationale: Statins inhibit HMG-CoA reductase, the rate-limiting enzyme in hepatic
cholesterol synthesis.
1. Which process describes the movement of a drug from its site of
administration into the bloodstream?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
Answer: C
Rationale: Absorption is the process by which a drug enters the systemic circulation from
its administration site.
2. Which organ is primarily responsible for the ‘first-pass effect’ in oral drug
administration?
A. Kidneys
B. Lungs
C. Liver
D. Spleen
Answer: C
Rationale: The first-pass effect occurs when the liver metabolizes a significant portion of
an oral medication before it reaches the systemic circulation.
,3. A drug with a high therapeutic index is considered to be:
A. Highly toxic
B. Relatively safe
C. Difficult to monitor
D. Rapidly excreted
Answer: B
Rationale: A high therapeutic index means there is a wide margin between the effective
dose and the toxic dose, making the drug safer.
4. Which of the following is a classic side effect of ACE inhibitors like lisinopril?
A. Persistent dry cough
B. Hypokalemia
C. Tachycardia
D. Peripheral edema
Answer: A
Rationale: ACE inhibitors can cause a dry, hacking cough due to the accumulation of
bradykinin in the lungs.
5. The nurse is preparing to administer digoxin. Which vital sign must be
checked for one full minute before administration?
A. Blood pressure
B. Apical pulse
C. Respiratory rate
D. Oxygen saturation
Answer: B
Rationale: Digoxin is a positive inotrope and negative chronotrope; the apical pulse must
be at least 60 bpm to safely administer the dose.
, 6. Which medication is commonly used as an antidote for a heparin overdose?
A. Vitamin K
B. Flumazenil
C. Protamine sulfate
D. Naloxone
Answer: C
Rationale: Protamine sulfate binds with heparin to form a stable salt, neutralizing its
anticoagulant effect.
7. Patients taking warfarin (Coumadin) should be instructed to maintain a
consistent intake of which vitamin?
A. Vitamin C
B. Vitamin D
C. Vitamin B12
D. Vitamin K
Answer: D
Rationale: Warfarin works by inhibiting Vitamin K-dependent clotting factors; sudden
changes in Vitamin K intake can disrupt anticoagulation therapy.
8. Which of the following describes the mechanism of action of HMG-CoA
reductase inhibitors (Statins)?
A. Inhibiting cholesterol absorption in the gut
B. Binding bile acids in the intestine
C. Increasing the breakdown of LDL in the bloodstream
D. Inhibiting an enzyme responsible for cholesterol synthesis in the liver
Answer: D
Rationale: Statins inhibit HMG-CoA reductase, the rate-limiting enzyme in hepatic
cholesterol synthesis.
