Pharmacotherapeutics Exam 1 Practice
Questions & [Verified Answers], Plus
Explained Rationales|2026 Latest
Update| Instant Download PDF
1. A patient with hypertension is started on an ACE inhibitor. Which
mechanism best explains the antihypertensive effect of this
medication?
A. Blockade of calcium channels in vascular smooth muscle
B. Inhibition of conversion of angiotensin I to angiotensin II
C. Direct stimulation of β2-adrenergic receptors
D. Increased renal sodium reabsorption
Answer: B. Inhibition of conversion of angiotensin I to angiotensin II
Rationale: ACE inhibitors inhibit angiotensin-converting enzyme,
reducing formation of angiotensin II. This decreases vasoconstriction
and aldosterone secretion, resulting in reduced systemic vascular
resistance and blood pressure. They may also increase bradykinin,
contributing to cough and, rarely, angioedema.
2. A patient taking warfarin has an international normalized ratio
(INR) of 5.8 but has no active bleeding. What is the most
appropriate consideration?
A. Increase the warfarin dose
B. Continue the same dose without monitoring
C. Hold or adjust warfarin according to the degree of INR elevation and
clinical circumstances
D. Immediately administer a thrombolytic agent
1|Page
,Answer: C. Hold or adjust warfarin according to the degree of INR
elevation and clinical circumstances
Rationale: An INR substantially above the patient's therapeutic range
increases bleeding risk. Management depends on the INR level,
indication, bleeding status, and other factors. Warfarin dosing should
be temporarily held or reduced when clinically appropriate, with
repeat INR monitoring.
3. Which medication is commonly used as a first-line treatment for
type 2 diabetes when lifestyle modification alone is insufficient?
A. Metformin
B. Warfarin
C. Digoxin
D. Prednisone
Answer: A. Metformin
Rationale: Metformin is commonly used as an initial pharmacologic
therapy for type 2 diabetes when appropriate. It primarily decreases
hepatic glucose production and improves insulin sensitivity. Renal
function must be assessed because significant renal impairment can
increase the risk of metformin-associated lactic acidosis.
4. A patient taking a statin develops unexplained muscle pain and
weakness. Which laboratory test is most appropriate if significant
statin-associated muscle injury is suspected?
A. Serum amylase
B. Creatine kinase
C. INR
D. Serum bilirubin only
Answer: B. Creatine kinase
2|Page
,Rationale: Creatine kinase (CK) can help evaluate suspected statin-
associated myopathy or rhabdomyolysis. Severe muscle symptoms,
marked CK elevation, or dark urine warrant prompt clinical evaluation
because rhabdomyolysis can cause acute kidney injury.
5. Which medication class is most directly associated with
bronchospasm when used nonselectively in a patient with
asthma?
A. Nonselective β-blockers
B. ACE inhibitors
C. Thiazide diuretics
D. Angiotensin II receptor blockers
Answer: A. Nonselective β-blockers
Rationale: Nonselective β-blockers block β2 receptors in bronchial
smooth muscle and can precipitate bronchoconstriction. This is
particularly important in patients with asthma or reactive airway
disease.
6. A patient with heart failure with reduced ejection fraction is
prescribed an evidence-based β-blocker. What is an important
therapeutic effect?
A. Increased sympathetic stimulation
B. Reduction of chronic sympathetic activation
C. Immediate increase in cardiac workload
D. Increased sodium retention
Answer: B. Reduction of chronic sympathetic activation
Rationale: Certain β-blockers used in heart failure reduce chronic
sympathetic nervous system activation. Over time, this can improve
ventricular function, reduce hospitalizations, and decrease mortality
3|Page
, in appropriate patients. Therapy is generally initiated at a low dose
and gradually titrated.
7. Which adverse effect is particularly characteristic of ACE inhibitor
therapy?
A. Severe hypoglycemia in all patients
B. Persistent dry cough
C. Ototoxicity
D. Gingival hyperplasia
Answer: B. Persistent dry cough
Rationale: ACE inhibitors can cause a persistent dry cough, partly
because ACE normally degrades bradykinin and related peptides.
Angioedema is another important adverse effect. An angiotensin II
receptor blocker may be considered when ACE inhibitor-associated
cough is problematic, depending on the clinical situation.
8. A patient receiving furosemide should be monitored particularly
closely for which electrolyte abnormality?
A. Hyperkalemia
B. Hypokalemia
C. Hypermagnesemia
D. Hyperphosphatemia
Answer: B. Hypokalemia
Rationale: Furosemide is a loop diuretic that increases renal excretion
of sodium, chloride, potassium, and water. Hypokalemia may occur
and can increase the risk of cardiac arrhythmias, particularly in
susceptible patients.
9. Which medication is a direct-acting oral anticoagulant that
directly inhibits factor Xa?
4|Page
Questions & [Verified Answers], Plus
Explained Rationales|2026 Latest
Update| Instant Download PDF
1. A patient with hypertension is started on an ACE inhibitor. Which
mechanism best explains the antihypertensive effect of this
medication?
A. Blockade of calcium channels in vascular smooth muscle
B. Inhibition of conversion of angiotensin I to angiotensin II
C. Direct stimulation of β2-adrenergic receptors
D. Increased renal sodium reabsorption
Answer: B. Inhibition of conversion of angiotensin I to angiotensin II
Rationale: ACE inhibitors inhibit angiotensin-converting enzyme,
reducing formation of angiotensin II. This decreases vasoconstriction
and aldosterone secretion, resulting in reduced systemic vascular
resistance and blood pressure. They may also increase bradykinin,
contributing to cough and, rarely, angioedema.
2. A patient taking warfarin has an international normalized ratio
(INR) of 5.8 but has no active bleeding. What is the most
appropriate consideration?
A. Increase the warfarin dose
B. Continue the same dose without monitoring
C. Hold or adjust warfarin according to the degree of INR elevation and
clinical circumstances
D. Immediately administer a thrombolytic agent
1|Page
,Answer: C. Hold or adjust warfarin according to the degree of INR
elevation and clinical circumstances
Rationale: An INR substantially above the patient's therapeutic range
increases bleeding risk. Management depends on the INR level,
indication, bleeding status, and other factors. Warfarin dosing should
be temporarily held or reduced when clinically appropriate, with
repeat INR monitoring.
3. Which medication is commonly used as a first-line treatment for
type 2 diabetes when lifestyle modification alone is insufficient?
A. Metformin
B. Warfarin
C. Digoxin
D. Prednisone
Answer: A. Metformin
Rationale: Metformin is commonly used as an initial pharmacologic
therapy for type 2 diabetes when appropriate. It primarily decreases
hepatic glucose production and improves insulin sensitivity. Renal
function must be assessed because significant renal impairment can
increase the risk of metformin-associated lactic acidosis.
4. A patient taking a statin develops unexplained muscle pain and
weakness. Which laboratory test is most appropriate if significant
statin-associated muscle injury is suspected?
A. Serum amylase
B. Creatine kinase
C. INR
D. Serum bilirubin only
Answer: B. Creatine kinase
2|Page
,Rationale: Creatine kinase (CK) can help evaluate suspected statin-
associated myopathy or rhabdomyolysis. Severe muscle symptoms,
marked CK elevation, or dark urine warrant prompt clinical evaluation
because rhabdomyolysis can cause acute kidney injury.
5. Which medication class is most directly associated with
bronchospasm when used nonselectively in a patient with
asthma?
A. Nonselective β-blockers
B. ACE inhibitors
C. Thiazide diuretics
D. Angiotensin II receptor blockers
Answer: A. Nonselective β-blockers
Rationale: Nonselective β-blockers block β2 receptors in bronchial
smooth muscle and can precipitate bronchoconstriction. This is
particularly important in patients with asthma or reactive airway
disease.
6. A patient with heart failure with reduced ejection fraction is
prescribed an evidence-based β-blocker. What is an important
therapeutic effect?
A. Increased sympathetic stimulation
B. Reduction of chronic sympathetic activation
C. Immediate increase in cardiac workload
D. Increased sodium retention
Answer: B. Reduction of chronic sympathetic activation
Rationale: Certain β-blockers used in heart failure reduce chronic
sympathetic nervous system activation. Over time, this can improve
ventricular function, reduce hospitalizations, and decrease mortality
3|Page
, in appropriate patients. Therapy is generally initiated at a low dose
and gradually titrated.
7. Which adverse effect is particularly characteristic of ACE inhibitor
therapy?
A. Severe hypoglycemia in all patients
B. Persistent dry cough
C. Ototoxicity
D. Gingival hyperplasia
Answer: B. Persistent dry cough
Rationale: ACE inhibitors can cause a persistent dry cough, partly
because ACE normally degrades bradykinin and related peptides.
Angioedema is another important adverse effect. An angiotensin II
receptor blocker may be considered when ACE inhibitor-associated
cough is problematic, depending on the clinical situation.
8. A patient receiving furosemide should be monitored particularly
closely for which electrolyte abnormality?
A. Hyperkalemia
B. Hypokalemia
C. Hypermagnesemia
D. Hyperphosphatemia
Answer: B. Hypokalemia
Rationale: Furosemide is a loop diuretic that increases renal excretion
of sodium, chloride, potassium, and water. Hypokalemia may occur
and can increase the risk of cardiac arrhythmias, particularly in
susceptible patients.
9. Which medication is a direct-acting oral anticoagulant that
directly inhibits factor Xa?
4|Page
