NUR 600 Exam 2: Advanced Clinical Pharmacology
- St. Thomas University Updated and Latest
Questions and Correct Answers with Rationale
1. A patient taking Lisinopril for hypertension develops a dry, persistent cough. What is the
primary cause of this adverse reaction?
A. Suppression of the renin-angiotensin system
B. Excessive reduction in peripheral vascular resistance
C. Increased levels of bradykinin in the lungs
D. Direct irritation of the bronchial mucosa
Correct Answer: C
Rationale: ACE inhibitors block the enzyme that degrades bradykinin, leading to its
accumulation in the respiratory tract. This accumulation often results in a dry, non-
productive cough that is a hallmark side effect of the class. If the cough becomes intolerable
for the patient, an Angiotensin II Receptor Blocker (ARB) is usually the preferred
alternative. Clinicians must distinguish this cough from symptoms of pulmonary edema or
worsening heart failure. Switching therapy is necessary because the cough will not resolve
while the patient continues ACE inhibitor treatment.
2. Which of the following conditions is a major contraindication for the use of non-selective
beta-blockers like Propranolol?
A. Hyperthyroidism
B. Asthma
C. Essential tremor
D. Stable angina
Correct Answer: B
Rationale: Non-selective beta-blockers antagonize both beta-1 and beta-2 receptors, which
can lead to bronchoconstriction. In patients with asthma or severe COPD, this can
precipitate a life-threatening asthma attack. Selective beta-1 blockers are generally
preferred if a patient with respiratory disease requires beta-blockade. Clinicians should
always check a patient’s respiratory history before prescribing these medications. Abruptly
stopping beta-blockers should also be avoided to prevent rebound hypertension and
tachycardia.
3. A patient with heart failure is prescribed Digoxin. Which electrolyte imbalance increases
the risk of digoxin toxicity?
A. Hyperkalemia
,B. Hypernatremia
C. Hypokalemia
D. Hyponatremia
Correct Answer: C
Rationale: Digoxin competes with potassium for binding sites on the sodium-potassium
ATPase pump. When potassium levels are low, digoxin has less competition and binds more
effectively, increasing its toxic potential. Symptoms of toxicity include visual disturbances
like yellow-green halos and various cardiac arrhythmias. Monitoring serum potassium and
digoxin levels is a critical component of patient management. Diuretics that cause
potassium loss are often the underlying cause of this interaction in heart failure patients.
4. A patient is starting Atorvastatin therapy for hyperlipidemia. Which laboratory test should
be monitored most closely for potential side effects?
A. Liver function tests (LFTs)
B. Serum creatinine
C. Complete blood count
D. Serum amylase
Correct Answer: A
Rationale: Statins can lead to elevations in liver enzymes, indicating potential
hepatotoxicity in some patients. Baseline liver function tests should be obtained before
initiating therapy according to current guidelines. While routine monitoring is no longer
mandatory for all, tests should be repeated if symptoms of liver injury occur. Additionally,
patients should be monitored for muscle pain or weakness, which may indicate
rhabdomyolysis. Educating the patient to report dark urine or unexplained muscle
soreness is vital for safety.
5. Which of the following medications requires regular monitoring of the International
Normalized Ratio (INR)?
A. Warfarin
B. Dabigatran
C. Rivaroxaban
D. Clopidogrel
Correct Answer: A
Rationale: Warfarin acts by inhibiting vitamin K-dependent clotting factors, and its effect
is highly variable among individuals. The INR is the standard laboratory test used to ensure
the patient stays within the therapeutic window. Maintaining a target INR, usually between
, 2.0 and 3.0, is crucial to prevent both bleeding and clotting. Direct oral anticoagulants like
Dabigatran do not require this type of routine laboratory monitoring. Patients must be
educated about consistent vitamin K intake to avoid fluctuations in their INR levels.
6. A patient is prescribed Albuterol for exercise-induced bronchospasm. How should the
nurse explain the mechanism of action?
A. It blocks muscarinic receptors in the airway
B. It stimulates beta-2 adrenergic receptors in the lungs
C. It inhibits the release of inflammatory leukotrienes
D. It reduces the production of IgE antibodies
Correct Answer: B
Rationale: Albuterol is a short-acting beta-2 agonist (SABA) that triggers bronchodilation
by relaxing smooth muscle in the airway. It is primarily used as a rescue medication for
acute asthma symptoms or as a pretreatment for exercise. Because it works quickly, it is
the drug of choice for immediate relief of shortness of breath. Overuse of SABA inhalers
may indicate poorly controlled asthma and the need for a controller medication. Side
effects can include tachycardia, tremors, and nervousness due to mild beta-1 stimulation.
7. What is the most common local side effect associated with the use of inhaled
corticosteroids (ICS)?
A. Oral candidiasis
B. Gingival hyperplasia
C. Dry mouth
D. Dental caries
Correct Answer: A
Rationale: Inhaled corticosteroids can suppress local immunity in the mouth and throat,
leading to fungal overgrowth. This condition, known as oral thrush, presents as white
patches on the tongue or buccal mucosa. To prevent this, patients are instructed to rinse
their mouth and spit after each use of the inhaler. Using a spacer device can also help
reduce the amount of medication deposited in the oropharynx. ICS are essential for long-
term control of airway inflammation in asthma management.
8. Metformin is contraindicated in patients with which of the following conditions due to the
risk of lactic acidosis?
A. Mild hypertension
B. Hypothyroidism
C. Severe renal impairment
- St. Thomas University Updated and Latest
Questions and Correct Answers with Rationale
1. A patient taking Lisinopril for hypertension develops a dry, persistent cough. What is the
primary cause of this adverse reaction?
A. Suppression of the renin-angiotensin system
B. Excessive reduction in peripheral vascular resistance
C. Increased levels of bradykinin in the lungs
D. Direct irritation of the bronchial mucosa
Correct Answer: C
Rationale: ACE inhibitors block the enzyme that degrades bradykinin, leading to its
accumulation in the respiratory tract. This accumulation often results in a dry, non-
productive cough that is a hallmark side effect of the class. If the cough becomes intolerable
for the patient, an Angiotensin II Receptor Blocker (ARB) is usually the preferred
alternative. Clinicians must distinguish this cough from symptoms of pulmonary edema or
worsening heart failure. Switching therapy is necessary because the cough will not resolve
while the patient continues ACE inhibitor treatment.
2. Which of the following conditions is a major contraindication for the use of non-selective
beta-blockers like Propranolol?
A. Hyperthyroidism
B. Asthma
C. Essential tremor
D. Stable angina
Correct Answer: B
Rationale: Non-selective beta-blockers antagonize both beta-1 and beta-2 receptors, which
can lead to bronchoconstriction. In patients with asthma or severe COPD, this can
precipitate a life-threatening asthma attack. Selective beta-1 blockers are generally
preferred if a patient with respiratory disease requires beta-blockade. Clinicians should
always check a patient’s respiratory history before prescribing these medications. Abruptly
stopping beta-blockers should also be avoided to prevent rebound hypertension and
tachycardia.
3. A patient with heart failure is prescribed Digoxin. Which electrolyte imbalance increases
the risk of digoxin toxicity?
A. Hyperkalemia
,B. Hypernatremia
C. Hypokalemia
D. Hyponatremia
Correct Answer: C
Rationale: Digoxin competes with potassium for binding sites on the sodium-potassium
ATPase pump. When potassium levels are low, digoxin has less competition and binds more
effectively, increasing its toxic potential. Symptoms of toxicity include visual disturbances
like yellow-green halos and various cardiac arrhythmias. Monitoring serum potassium and
digoxin levels is a critical component of patient management. Diuretics that cause
potassium loss are often the underlying cause of this interaction in heart failure patients.
4. A patient is starting Atorvastatin therapy for hyperlipidemia. Which laboratory test should
be monitored most closely for potential side effects?
A. Liver function tests (LFTs)
B. Serum creatinine
C. Complete blood count
D. Serum amylase
Correct Answer: A
Rationale: Statins can lead to elevations in liver enzymes, indicating potential
hepatotoxicity in some patients. Baseline liver function tests should be obtained before
initiating therapy according to current guidelines. While routine monitoring is no longer
mandatory for all, tests should be repeated if symptoms of liver injury occur. Additionally,
patients should be monitored for muscle pain or weakness, which may indicate
rhabdomyolysis. Educating the patient to report dark urine or unexplained muscle
soreness is vital for safety.
5. Which of the following medications requires regular monitoring of the International
Normalized Ratio (INR)?
A. Warfarin
B. Dabigatran
C. Rivaroxaban
D. Clopidogrel
Correct Answer: A
Rationale: Warfarin acts by inhibiting vitamin K-dependent clotting factors, and its effect
is highly variable among individuals. The INR is the standard laboratory test used to ensure
the patient stays within the therapeutic window. Maintaining a target INR, usually between
, 2.0 and 3.0, is crucial to prevent both bleeding and clotting. Direct oral anticoagulants like
Dabigatran do not require this type of routine laboratory monitoring. Patients must be
educated about consistent vitamin K intake to avoid fluctuations in their INR levels.
6. A patient is prescribed Albuterol for exercise-induced bronchospasm. How should the
nurse explain the mechanism of action?
A. It blocks muscarinic receptors in the airway
B. It stimulates beta-2 adrenergic receptors in the lungs
C. It inhibits the release of inflammatory leukotrienes
D. It reduces the production of IgE antibodies
Correct Answer: B
Rationale: Albuterol is a short-acting beta-2 agonist (SABA) that triggers bronchodilation
by relaxing smooth muscle in the airway. It is primarily used as a rescue medication for
acute asthma symptoms or as a pretreatment for exercise. Because it works quickly, it is
the drug of choice for immediate relief of shortness of breath. Overuse of SABA inhalers
may indicate poorly controlled asthma and the need for a controller medication. Side
effects can include tachycardia, tremors, and nervousness due to mild beta-1 stimulation.
7. What is the most common local side effect associated with the use of inhaled
corticosteroids (ICS)?
A. Oral candidiasis
B. Gingival hyperplasia
C. Dry mouth
D. Dental caries
Correct Answer: A
Rationale: Inhaled corticosteroids can suppress local immunity in the mouth and throat,
leading to fungal overgrowth. This condition, known as oral thrush, presents as white
patches on the tongue or buccal mucosa. To prevent this, patients are instructed to rinse
their mouth and spit after each use of the inhaler. Using a spacer device can also help
reduce the amount of medication deposited in the oropharynx. ICS are essential for long-
term control of airway inflammation in asthma management.
8. Metformin is contraindicated in patients with which of the following conditions due to the
risk of lactic acidosis?
A. Mild hypertension
B. Hypothyroidism
C. Severe renal impairment
