Clinical Drug Therapy 2026/2027 | Clinical Drug Therapy Study
Guide, Nursing Pharmacology Exam Prep, Drug Therapy Practice
Questions with Answers & Rationales, Pharmacokinetics,
Pharmacodynamics, Medication Administration, Dosage Calculations,
Drug Interactions, Adverse Effects, Contraindications, Medication
Safety, Patient Education, Cardiovascular Drugs, Antibiotics,
Analgesics, Respiratory Medications, Endocrine Drugs & Clinical
Nursing Applications
Question 1: A patient with a history of peptic ulcer disease is prescribed a
nonsteroidal anti-inflammatory drug (NSAID). Which medication should the
nurse anticipate being prescribed concurrently to protect the gastric mucosa?
A. Ondansetron
B. Misoprostol
C. Loperamide
D. Sucralfate
CORRECT ANSWER: B. Misoprostol
Rationale: Misoprostol is a synthetic prostaglandin E1 analog that suppresses
gastric acid secretion and enhances mucosal protection, making it the preferred
agent for preventing NSAID-induced peptic ulcers. Ondansetron is an antiemetic,
loperamide is an antidiarrheal, and sucralfate is used for active ulcer healing but is
not the primary prophylactic agent for NSAID-induced injury.
Question 2: A nurse is teaching a patient about the administration of sublingual
nitroglycerin for angina pectoris. Which instruction is most appropriate?
A. Swallow the tablet with a full glass of water.
B. Place the tablet under the tongue and allow it to dissolve.
C. Chew the tablet thoroughly before swallowing.
D. Take the tablet with food to reduce gastric irritation.
CORRECT ANSWER: B. Place the tablet under the tongue and allow it to dissolve.
Rationale: Sublingual nitroglycerin is absorbed directly through the oral mucosa
into the systemic circulation, providing rapid relief of angina. Swallowing,
,chewing, or taking it with food would delay absorption and reduce therapeutic
effectiveness.
Question 3: A patient receiving warfarin therapy has an INR of 6.5. Which
intervention should the nurse anticipate first?
A. Administer vitamin K (phytonadione).
B. Increase the warfarin dose.
C. Administer protamine sulfate.
D. Encourage a diet high in vitamin K.
CORRECT ANSWER: A. Administer vitamin K (phytonadione).
Rationale: An INR of 6.5 indicates a dangerously elevated bleeding risk. Vitamin K
is the antidote for warfarin overdose, reversing its anticoagulant effect.
Protamine sulfate reverses heparin, not warfarin. Increasing the dose would
worsen the condition, and dietary vitamin K is not a rapid intervention for acute
reversal.
Question 4: Which laboratory value should be monitored most closely in a
patient receiving digoxin?
A. Serum potassium
B. Serum calcium
C. Serum sodium
D. Serum chloride
CORRECT ANSWER: A. Serum potassium
Rationale: Hypokalemia increases the risk of digoxin toxicity by enhancing digoxin
binding to the sodium-potassium ATPase pump. Potassium levels must be
monitored closely, especially in patients taking diuretics. While calcium can affect
cardiac contractility, potassium is the most critical electrolyte for digoxin safety.
Question 5: A patient is prescribed metformin for type 2 diabetes. Which
adverse effect should the nurse include in patient teaching?
A. Hypoglycemia
B. Weight gain
,C. Gastrointestinal upset
D. Hyperkalemia
CORRECT ANSWER: C. Gastrointestinal upset
Rationale: Metformin commonly causes gastrointestinal adverse effects such as
nausea, diarrhea, and abdominal discomfort. It does not typically cause
hypoglycemia when used alone, is weight-neutral or causes weight loss, and does
not cause hyperkalemia.
Question 6: Which medication is considered first-line therapy for an acute
asthma exacerbation?
A. Inhaled albuterol
B. Oral prednisone
C. Inhaled fluticasone
D. Oral montelukast
CORRECT ANSWER: A. Inhaled albuterol
Rationale: Inhaled short-acting beta-2 agonists such as albuterol provide rapid
bronchodilation and are the first-line treatment for acute asthma exacerbations.
Corticosteroids and leukotriene modifiers are used for long-term control, not
immediate relief.
Question 7: A nurse is reviewing the medication list of a patient with heart
failure. Which drug has been shown to reduce mortality in heart failure with
reduced ejection fraction?
A. Furosemide
B. Carvedilol
C. Digoxin
D. Amlodipine
CORRECT ANSWER: B. Carvedilol
Rationale: Carvedilol is a beta-blocker with evidence demonstrating reduced
mortality in heart failure with reduced ejection fraction. Furosemide provides
symptomatic relief but does not reduce mortality. Digoxin reduces
, hospitalizations but not mortality. Amlodipine is not a standard mortality-
reducing agent for heart failure.
Question 8: A patient is prescribed levothyroxine. Which instruction should the
nurse provide regarding administration?
A. Take it at bedtime with a snack.
B. Take it in the morning on an empty stomach.
C. Take it with calcium supplements.
D. Take it every other day.
CORRECT ANSWER: B. Take it in the morning on an empty stomach.
Rationale: Levothyroxine should be taken in the morning on an empty stomach,
30 to 60 minutes before breakfast, to ensure optimal absorption. Calcium and
food can interfere with absorption. It is taken daily, not every other day.
Question 9: Which adverse effect is most associated with long-term
corticosteroid therapy?
A. Hypotension
B. Osteoporosis
C. Bradycardia
D. Hypoglycemia
CORRECT ANSWER: B. Osteoporosis
Rationale: Long-term corticosteroid therapy leads to decreased bone density and
osteoporosis due to inhibition of osteoblast function and increased bone
resorption. Other effects include hypertension, tachycardia, and hyperglycemia,
not hypotension, bradycardia, or hypoglycemia.
Question 10: A patient with a bacterial infection is prescribed gentamicin.
Which serious adverse effect should the nurse monitor for?
A. Hepatotoxicity
B. Nephrotoxicity
C. Cardiotoxicity
D. Neurotoxicity
CORRECT ANSWER: B. Nephrotoxicity
Guide, Nursing Pharmacology Exam Prep, Drug Therapy Practice
Questions with Answers & Rationales, Pharmacokinetics,
Pharmacodynamics, Medication Administration, Dosage Calculations,
Drug Interactions, Adverse Effects, Contraindications, Medication
Safety, Patient Education, Cardiovascular Drugs, Antibiotics,
Analgesics, Respiratory Medications, Endocrine Drugs & Clinical
Nursing Applications
Question 1: A patient with a history of peptic ulcer disease is prescribed a
nonsteroidal anti-inflammatory drug (NSAID). Which medication should the
nurse anticipate being prescribed concurrently to protect the gastric mucosa?
A. Ondansetron
B. Misoprostol
C. Loperamide
D. Sucralfate
CORRECT ANSWER: B. Misoprostol
Rationale: Misoprostol is a synthetic prostaglandin E1 analog that suppresses
gastric acid secretion and enhances mucosal protection, making it the preferred
agent for preventing NSAID-induced peptic ulcers. Ondansetron is an antiemetic,
loperamide is an antidiarrheal, and sucralfate is used for active ulcer healing but is
not the primary prophylactic agent for NSAID-induced injury.
Question 2: A nurse is teaching a patient about the administration of sublingual
nitroglycerin for angina pectoris. Which instruction is most appropriate?
A. Swallow the tablet with a full glass of water.
B. Place the tablet under the tongue and allow it to dissolve.
C. Chew the tablet thoroughly before swallowing.
D. Take the tablet with food to reduce gastric irritation.
CORRECT ANSWER: B. Place the tablet under the tongue and allow it to dissolve.
Rationale: Sublingual nitroglycerin is absorbed directly through the oral mucosa
into the systemic circulation, providing rapid relief of angina. Swallowing,
,chewing, or taking it with food would delay absorption and reduce therapeutic
effectiveness.
Question 3: A patient receiving warfarin therapy has an INR of 6.5. Which
intervention should the nurse anticipate first?
A. Administer vitamin K (phytonadione).
B. Increase the warfarin dose.
C. Administer protamine sulfate.
D. Encourage a diet high in vitamin K.
CORRECT ANSWER: A. Administer vitamin K (phytonadione).
Rationale: An INR of 6.5 indicates a dangerously elevated bleeding risk. Vitamin K
is the antidote for warfarin overdose, reversing its anticoagulant effect.
Protamine sulfate reverses heparin, not warfarin. Increasing the dose would
worsen the condition, and dietary vitamin K is not a rapid intervention for acute
reversal.
Question 4: Which laboratory value should be monitored most closely in a
patient receiving digoxin?
A. Serum potassium
B. Serum calcium
C. Serum sodium
D. Serum chloride
CORRECT ANSWER: A. Serum potassium
Rationale: Hypokalemia increases the risk of digoxin toxicity by enhancing digoxin
binding to the sodium-potassium ATPase pump. Potassium levels must be
monitored closely, especially in patients taking diuretics. While calcium can affect
cardiac contractility, potassium is the most critical electrolyte for digoxin safety.
Question 5: A patient is prescribed metformin for type 2 diabetes. Which
adverse effect should the nurse include in patient teaching?
A. Hypoglycemia
B. Weight gain
,C. Gastrointestinal upset
D. Hyperkalemia
CORRECT ANSWER: C. Gastrointestinal upset
Rationale: Metformin commonly causes gastrointestinal adverse effects such as
nausea, diarrhea, and abdominal discomfort. It does not typically cause
hypoglycemia when used alone, is weight-neutral or causes weight loss, and does
not cause hyperkalemia.
Question 6: Which medication is considered first-line therapy for an acute
asthma exacerbation?
A. Inhaled albuterol
B. Oral prednisone
C. Inhaled fluticasone
D. Oral montelukast
CORRECT ANSWER: A. Inhaled albuterol
Rationale: Inhaled short-acting beta-2 agonists such as albuterol provide rapid
bronchodilation and are the first-line treatment for acute asthma exacerbations.
Corticosteroids and leukotriene modifiers are used for long-term control, not
immediate relief.
Question 7: A nurse is reviewing the medication list of a patient with heart
failure. Which drug has been shown to reduce mortality in heart failure with
reduced ejection fraction?
A. Furosemide
B. Carvedilol
C. Digoxin
D. Amlodipine
CORRECT ANSWER: B. Carvedilol
Rationale: Carvedilol is a beta-blocker with evidence demonstrating reduced
mortality in heart failure with reduced ejection fraction. Furosemide provides
symptomatic relief but does not reduce mortality. Digoxin reduces
, hospitalizations but not mortality. Amlodipine is not a standard mortality-
reducing agent for heart failure.
Question 8: A patient is prescribed levothyroxine. Which instruction should the
nurse provide regarding administration?
A. Take it at bedtime with a snack.
B. Take it in the morning on an empty stomach.
C. Take it with calcium supplements.
D. Take it every other day.
CORRECT ANSWER: B. Take it in the morning on an empty stomach.
Rationale: Levothyroxine should be taken in the morning on an empty stomach,
30 to 60 minutes before breakfast, to ensure optimal absorption. Calcium and
food can interfere with absorption. It is taken daily, not every other day.
Question 9: Which adverse effect is most associated with long-term
corticosteroid therapy?
A. Hypotension
B. Osteoporosis
C. Bradycardia
D. Hypoglycemia
CORRECT ANSWER: B. Osteoporosis
Rationale: Long-term corticosteroid therapy leads to decreased bone density and
osteoporosis due to inhibition of osteoblast function and increased bone
resorption. Other effects include hypertension, tachycardia, and hyperglycemia,
not hypotension, bradycardia, or hypoglycemia.
Question 10: A patient with a bacterial infection is prescribed gentamicin.
Which serious adverse effect should the nurse monitor for?
A. Hepatotoxicity
B. Nephrotoxicity
C. Cardiotoxicity
D. Neurotoxicity
CORRECT ANSWER: B. Nephrotoxicity
