[WGU D116 ADVANCED PHARMACOLOGY OA & ACTUAL EXAM] – EXAM-STYLE
QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | 2026/27 LATEST UPDATE | EXAM PREP |
STUDY GUIDE | PRACTICE TEST
Section One: Questions 1 – 50
1. A patient with a history of myocardial infarction is prescribed atorvastatin.
Which laboratory parameter is most critical to monitor for this medication's
primary adverse effect?
A. Serum creatinine
B. Liver transaminases
C. White blood cell count
D. Serum potassium
Correct Answer: B. Liver transaminases
Rationale: Atorvastatin, a HMG-CoA reductase inhibitor, is associated with
hepatotoxicity, making liver function tests (LFTs), specifically transaminases (AST
and ALT), the most critical lab parameter to monitor. While serum creatinine is
important for renal function, white blood cell count is not a primary concern, and
serum potassium is more relevant to other drug classes. The primary adverse effect
requiring monitoring for statins is liver enzyme elevation.
2. A nurse is providing education to a patient prescribed an MAOI for
treatment-resistant depression. Which dietary instruction is most important to
include?
A. Avoid foods high in tyramine.
,B. Increase intake of foods rich in vitamin K.
C. Limit consumption of high-fiber foods.
D. Restrict intake of high-sodium foods.
Correct Answer: A. Avoid foods high in tyramine.
Rationale: MAOIs inhibit the breakdown of tyramine, leading to a hypertensive
crisis if ingested. Tyramine-rich foods (aged cheeses, cured meats, fermented
products) must be avoided. The other options are not associated with a severe, life-
threatening interaction with MAOIs.
3. A patient is receiving IV vancomycin for a severe MRSA infection. Which
assessment finding is most indicative of an infusion-related reaction known as
"Red Man Syndrome"?
A. Hypotension and bradycardia
B. Erythematous rash on the face, neck, and upper torso
C. Wheezing and stridor
D. Pruritus localized to the IV site
Correct Answer: B. Erythematous rash on the face, neck, and upper torso
Rationale: Red Man Syndrome (RMS) is characterized by a non-allergic, infusion-
related reaction to vancomycin, presenting as erythema, flushing, and pruritus on
the upper body. Hypotension and tachycardia (not bradycardia) may occur, but the
hallmark is the erythematous rash. Wheezing indicates a more serious anaphylactic
reaction. Localized pruritus is less specific and common with many IV infusions.
,4. Which medication is classified as a loop diuretic and acts primarily on the
ascending limb of the loop of Henle?
A. Hydrochlorothiazide
B. Spironolactone
C. Furosemide
D. Metolazone
Correct Answer: C. Furosemide
Rationale: Furosemide is a potent loop diuretic that inhibits the Na-K-2Cl
cotransporter in the thick ascending limb of the loop of Henle. Hydrochlorothiazide
acts on the distal convoluted tubule, and spironolactone is a potassium-sparing
diuretic acting on the collecting duct. Metolazone is a thiazide-like diuretic that also
acts on the distal convoluted tubule.
5. A healthcare provider prescribes digoxin for a patient with heart failure.
Which electrolyte imbalance would significantly increase the risk of digoxin
toxicity?
A. Hyperkalemia
B. Hypokalemia
C. Hypermagnesemia
D. Hypercalcemia
Correct Answer: B. Hypokalemia
Rationale: Hypokalemia increases the binding of digoxin to cardiac sodium-
potassium ATPase pumps, predisposing the patient to toxicity and arrhythmias.
Hyperkalemia, hypermagnesemia, and hypercalcemia have less pronounced effects
, on digoxin's binding and toxicity, with hypokalemia being the most significant risk
factor.
6. A patient is started on warfarin for atrial fibrillation. What is the primary
laboratory test used to monitor therapeutic response and guide dosing?
A. aPTT
B. INR
C. Platelet count
D. Serum fibrinogen
Correct Answer: B. INR
Rationale: Warfarin affects the extrinsic pathway and its effect is monitored using
the International Normalized Ratio (INR), which standardizes the prothrombin time
(PT). aPTT is used to monitor heparin. Platelet count is for thrombocytopenia, and
fibrinogen is for coagulation disorders. The INR is the established standard for
warfarin monitoring.
7. A child presents with an acute asthma exacerbation. Which medication is the
first-line treatment for rapid bronchodilation in this scenario?
A. Inhaled fluticasone
B. Oral montelukast
C. Inhaled albuterol
D. IV aminophylline
Correct Answer: C. Inhaled albuterol
QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | 2026/27 LATEST UPDATE | EXAM PREP |
STUDY GUIDE | PRACTICE TEST
Section One: Questions 1 – 50
1. A patient with a history of myocardial infarction is prescribed atorvastatin.
Which laboratory parameter is most critical to monitor for this medication's
primary adverse effect?
A. Serum creatinine
B. Liver transaminases
C. White blood cell count
D. Serum potassium
Correct Answer: B. Liver transaminases
Rationale: Atorvastatin, a HMG-CoA reductase inhibitor, is associated with
hepatotoxicity, making liver function tests (LFTs), specifically transaminases (AST
and ALT), the most critical lab parameter to monitor. While serum creatinine is
important for renal function, white blood cell count is not a primary concern, and
serum potassium is more relevant to other drug classes. The primary adverse effect
requiring monitoring for statins is liver enzyme elevation.
2. A nurse is providing education to a patient prescribed an MAOI for
treatment-resistant depression. Which dietary instruction is most important to
include?
A. Avoid foods high in tyramine.
,B. Increase intake of foods rich in vitamin K.
C. Limit consumption of high-fiber foods.
D. Restrict intake of high-sodium foods.
Correct Answer: A. Avoid foods high in tyramine.
Rationale: MAOIs inhibit the breakdown of tyramine, leading to a hypertensive
crisis if ingested. Tyramine-rich foods (aged cheeses, cured meats, fermented
products) must be avoided. The other options are not associated with a severe, life-
threatening interaction with MAOIs.
3. A patient is receiving IV vancomycin for a severe MRSA infection. Which
assessment finding is most indicative of an infusion-related reaction known as
"Red Man Syndrome"?
A. Hypotension and bradycardia
B. Erythematous rash on the face, neck, and upper torso
C. Wheezing and stridor
D. Pruritus localized to the IV site
Correct Answer: B. Erythematous rash on the face, neck, and upper torso
Rationale: Red Man Syndrome (RMS) is characterized by a non-allergic, infusion-
related reaction to vancomycin, presenting as erythema, flushing, and pruritus on
the upper body. Hypotension and tachycardia (not bradycardia) may occur, but the
hallmark is the erythematous rash. Wheezing indicates a more serious anaphylactic
reaction. Localized pruritus is less specific and common with many IV infusions.
,4. Which medication is classified as a loop diuretic and acts primarily on the
ascending limb of the loop of Henle?
A. Hydrochlorothiazide
B. Spironolactone
C. Furosemide
D. Metolazone
Correct Answer: C. Furosemide
Rationale: Furosemide is a potent loop diuretic that inhibits the Na-K-2Cl
cotransporter in the thick ascending limb of the loop of Henle. Hydrochlorothiazide
acts on the distal convoluted tubule, and spironolactone is a potassium-sparing
diuretic acting on the collecting duct. Metolazone is a thiazide-like diuretic that also
acts on the distal convoluted tubule.
5. A healthcare provider prescribes digoxin for a patient with heart failure.
Which electrolyte imbalance would significantly increase the risk of digoxin
toxicity?
A. Hyperkalemia
B. Hypokalemia
C. Hypermagnesemia
D. Hypercalcemia
Correct Answer: B. Hypokalemia
Rationale: Hypokalemia increases the binding of digoxin to cardiac sodium-
potassium ATPase pumps, predisposing the patient to toxicity and arrhythmias.
Hyperkalemia, hypermagnesemia, and hypercalcemia have less pronounced effects
, on digoxin's binding and toxicity, with hypokalemia being the most significant risk
factor.
6. A patient is started on warfarin for atrial fibrillation. What is the primary
laboratory test used to monitor therapeutic response and guide dosing?
A. aPTT
B. INR
C. Platelet count
D. Serum fibrinogen
Correct Answer: B. INR
Rationale: Warfarin affects the extrinsic pathway and its effect is monitored using
the International Normalized Ratio (INR), which standardizes the prothrombin time
(PT). aPTT is used to monitor heparin. Platelet count is for thrombocytopenia, and
fibrinogen is for coagulation disorders. The INR is the established standard for
warfarin monitoring.
7. A child presents with an acute asthma exacerbation. Which medication is the
first-line treatment for rapid bronchodilation in this scenario?
A. Inhaled fluticasone
B. Oral montelukast
C. Inhaled albuterol
D. IV aminophylline
Correct Answer: C. Inhaled albuterol
