WGU Pharmacology Assessment ACTUAL EXAM
TEST BANK QUESTIONS AND CORRECT
VERIFIED ANSWERS/ ALREADY GRADED A+
Question 1
,A nurse is reviewing the mechanism of action of acetaminophen (Tylenol). Which of the following best describes how this
medication works?
A) Inhibits cyclooxygenase (COX) enzymes in peripheral tissues
B) Acts primarily on the central nervous system to reduce pain and fever
C) Blocks opioid receptors in the brain
D) Inhibits platelet aggregation
Answer: B
Rationale: Acetaminophen works primarily in the CNS by inhibiting prostaglandin synthesis. Unlike NSAIDs, it has minimal
anti-inflammatory effects and does not significantly inhibit COX in peripheral tissues or affect platelet function.
Question 2
A patient is prescribed warfarin (Coumadin). Which lab value should the nurse monitor to evaluate therapeutic
effectiveness?
A) aPTT
B) INR
,C) Platelet count
D) Hemoglobin
Answer: B
Rationale: Warfarin affects the extrinsic pathway, which is monitored by PT/INR. Therapeutic INR is typically 2-3 for most
indications. aPTT monitors heparin, not warfarin.
Question 3
Which medication is a first-line treatment for anaphylaxis?
A) Diphenhydramine (Benadryl)
B) Epinephrine
C) Methylprednisolone (Solu-Medrol)
D) Albuterol
Answer: B
Rationale: Epinephrine is the first-line drug for anaphylaxis. It reverses bronchoconstriction, vasodilation, and prevents
further mediator release. Antihistamines and steroids are adjunctive treatments.
, Question 4
A nurse is administering digoxin (Lanoxin). Which assessment finding would require holding the medication?
A) Heart rate 88 bpm
B) Heart rate 52 bpm
C) Blood pressure 128/76
D) Respiratory rate 18
Answer: B
Rationale: Digoxin should be held if the apical pulse is below 60 bpm in adults. Digoxin slows conduction through the AV
node and can cause bradycardia.
Question 5
Which antibiotic class is associated with tendon rupture?
TEST BANK QUESTIONS AND CORRECT
VERIFIED ANSWERS/ ALREADY GRADED A+
Question 1
,A nurse is reviewing the mechanism of action of acetaminophen (Tylenol). Which of the following best describes how this
medication works?
A) Inhibits cyclooxygenase (COX) enzymes in peripheral tissues
B) Acts primarily on the central nervous system to reduce pain and fever
C) Blocks opioid receptors in the brain
D) Inhibits platelet aggregation
Answer: B
Rationale: Acetaminophen works primarily in the CNS by inhibiting prostaglandin synthesis. Unlike NSAIDs, it has minimal
anti-inflammatory effects and does not significantly inhibit COX in peripheral tissues or affect platelet function.
Question 2
A patient is prescribed warfarin (Coumadin). Which lab value should the nurse monitor to evaluate therapeutic
effectiveness?
A) aPTT
B) INR
,C) Platelet count
D) Hemoglobin
Answer: B
Rationale: Warfarin affects the extrinsic pathway, which is monitored by PT/INR. Therapeutic INR is typically 2-3 for most
indications. aPTT monitors heparin, not warfarin.
Question 3
Which medication is a first-line treatment for anaphylaxis?
A) Diphenhydramine (Benadryl)
B) Epinephrine
C) Methylprednisolone (Solu-Medrol)
D) Albuterol
Answer: B
Rationale: Epinephrine is the first-line drug for anaphylaxis. It reverses bronchoconstriction, vasodilation, and prevents
further mediator release. Antihistamines and steroids are adjunctive treatments.
, Question 4
A nurse is administering digoxin (Lanoxin). Which assessment finding would require holding the medication?
A) Heart rate 88 bpm
B) Heart rate 52 bpm
C) Blood pressure 128/76
D) Respiratory rate 18
Answer: B
Rationale: Digoxin should be held if the apical pulse is below 60 bpm in adults. Digoxin slows conduction through the AV
node and can cause bradycardia.
Question 5
Which antibiotic class is associated with tendon rupture?
