NR 566 / NR566 Final Exam Success Guide 2026–2027 | Advanced
Pharmacology for Care of the Family | Complete Study Guide with
Verified Questions, Correct Answers & Detailed Rationales | Latest
Updated PDF Edition
1. A patient has been on nitroglycerin patch therapy for one month and reports that the drug no
longer relieves their angina as effectively as before. Why are nitrate-free periods every 24 hours
necessary for this patient?
a) To prevent rebound hypertension
b) To inhibit the development of tolerance
c) To reduce the risk of methemoglobinemia
d) To enhance first-pass metabolism
Answer: b) To inhibit the development of tolerance
Rationale: Continuous nitrate exposure leads to tolerance; a nitrate-free interval restores
sensitivity.
2. A 45-year-old female presents with weight loss, heat intolerance, and palpitations. Her lab
results show a very low TSH level. What does a low level of thyroid-stimulating hormone
indicate?
a) Hypothyroidism
b) Hyperthyroidism
c) Pituitary adenoma
d) Normal thyroid function
Answer: b) Hyperthyroidism
*Rationale: Low TSH with elevated T3/T4 indicates primary hyperthyroidism due to negative
feedback suppression.*
3. A newly diagnosed patient presents with a low TSH level, tachycardia, and anxiety. What
would be the best option to treat this patient's symptoms?
a) Levothyroxine (Synthroid)
b) Methimazole (Tapazole)
c) Propranolol (Inderal)
d) Radioactive iodine
Answer: c) Propranolol (Inderal)
Rationale: Beta-blockers like propranolol control adrenergic symptoms (tachycardia, anxiety) of
hyperthyroidism.
4. A patient with heart failure is started on spironolactone (Aldactone). What is the mechanism of
action of this medication?
a) Loop diuretic inhibiting sodium reabsorption
b) Aldosterone antagonist
c) Thiazide diuretic
,d) Carbonic anhydrase inhibitor
Answer: b) Aldosterone antagonist
Rationale: Spironolactone competitively blocks aldosterone receptors, reducing sodium and
water retention.
5. A hospitalized patient with a deep vein thrombosis is started on intravenous heparin. Heparin
exerts its therapeutic action by what mechanism?
a) Directly inhibiting factor Xa
b) Upregulating the activity of antithrombin III
c) Blocking vitamin K-dependent clotting factors
d) Dissolving existing clots
Answer: b) Upregulating the activity of antithrombin III
Rationale: Heparin potentiates antithrombin III, which inactivates thrombin and factor Xa.
6. A patient accidentally receives a drug to which they are highly allergic and immediately
develops wheezing, hypotension, and urticaria. What physiologic action happens when the
offending drug is administered during an anaphylactic reaction?
a) Mast cells liberate large doses of histamine
b) Complement system deactivates
c) Neutrophils release myeloperoxidase
d) Eosinophils suppress the immune response
Answer: a) Mast cells liberate large doses of histamine
Rationale: Anaphylaxis triggers mast cell degranulation and massive histamine release causing
vasodilation and bronchospasm.
7. A patient with severe plaque psoriasis has failed topical treatments. What are two systemic
psoriasis medications?
a) Methotrexate and cyclosporine
b) Phototherapy and topical corticosteroids
c) Biologics and retinoids
d) Antibiotics and antifungals
Answer: b) Phototherapy and topical corticosteroids
Rationale: Phototherapy and topical corticosteroids are systemic/mainstay treatments for
moderate to severe psoriasis.
8. A 55-year-old African American male is newly diagnosed with uncomplicated stage I
hypertension. What is the first choice of drug therapy for this patient?
a) ACE inhibitor
b) Beta-blocker
c) Thiazide diuretic
d) Calcium channel blocker
Answer: c) Thiazide diuretic
Rationale: Thiazide diuretics are first-line for uncomplicated stage I hypertension per JNC
guidelines.
,9. A patient with atrial fibrillation is started on digoxin (Lanoxin). What is the effect of cardiac
glycosides on the heart?
a) Positive chronotropic effect
b) Negative chronotropic effect
c) Positive dromotropic effect
d) No effect on heart rate
Answer: b) Negative chronotropic effect
Rationale: Cardiac glycosides slow the heart rate (negative chronotropy) by increasing vagal
tone.
10. A 32-year-old female on Depo-Provera for contraception reports that she has not had a
menstrual period in four months. Amenorrhea is the most common side effect of which birth
control medication?
a) Ethinyl estradiol (Ortho Tri-Cyclen)
b) Medroxyprogesterone (Depo-Provera)
c) Etonogestrel (Nexplanon)
d) Levonorgestrel (Mirena)
Answer: b) Medroxyprogesterone (Depo-Provera)
Rationale: Amenorrhea is very common with Depo-Provera due to prolonged progestin-induced
endometrial thinning.
11. A patient with hypertension is prescribed atenolol (Tenormin). What is the mechanism of
action of this antihypertensive agent?
a) Blocks calcium channels in vascular smooth muscle
b) Competes with epinephrine for available beta-receptor sites
c) Inhibits angiotensin-converting enzyme
d) Acts as a direct vasodilator
Answer: b) Competes with epinephrine for available beta-receptor sites
*Rationale: Atenolol is a cardioselective beta-blocker that competitively blocks beta-1
receptors.*
12. A patient with stable angina is prescribed nitroglycerin. What type of action do nitrates have
on the body?
a) Increased systemic arterial tone
b) Reduction in systemic venous tone
c) Increased cardiac contractility
d) Increased heart rate
Answer: b) Reduction in systemic venous tone
Rationale: Nitrates primarily cause venodilation, reducing preload and myocardial oxygen
demand.
13. A 68-year-old patient with known coronary artery disease has an LDL level of 130 mg/dL.
What is the recommended level of low-density lipoprotein cholesterol (LDL) for patients with
known coronary artery disease?
a) 200 mg/dL or less
, b) 160 mg/dL or less
c) 130 mg/dL or less
d) *100 mg/dL or less*
*Answer: d) 100 mg/dL or less*
*Rationale: LDL goal for established CAD is <100 mg/dL; very high-risk patients may target
<70 mg/dL.*
14. A patient with a cardiac dysrhythmia is started on a Group IV antiarrhythmic drug. What is
the mechanism of action of Group IV anti-dysrhythmia drugs?
a) Blocking sodium channels
b) Blocking potassium channels
c) Depressing phase 4 depolarization and lengthening phases 1 and 2 repolarization
d) Blocking beta-adrenergic receptors
Answer: c) Depressing phase 4 depolarization and lengthening phases 1 and 2 repolarization
Rationale: Group IV (calcium channel blockers) depress phase 4 and prolong repolarization in
nodal tissue.
15. A 28-year-old female is diagnosed with Graves' disease and has significant hyperthyroidism.
Which drug therapy should be used to lower the serum concentration of thyroid hormones and
re-establish eumetabolic state?
a) Beta-blockers alone
b) Anti-thyroid drugs
c) Iodine supplements
d) Levothyroxine
Answer: b) Anti-thyroid drugs
Rationale: Methimazole or propylthiouracil (anti-thyroid drugs) inhibit thyroid hormone
synthesis.
16. A patient with stage I hypertension also has renal insufficiency. Which type of diuretic would
be most appropriate for this patient?
a) Thiazide diuretic
b) Potassium-sparing diuretic
c) Loop diuretic
d) Carbonic anhydrase inhibitor
Answer: c) Loop diuretic
Rationale: Loop diuretics remain effective in renal insufficiency when thiazides fail due to
reduced GFR.
17. A client with hypertension and concomitant heart failure needs first-line therapy. What drug
should be considered as first-line therapy for this patient?
a) Metoprolol (Lopressor)
b) Hydrochlorothiazide (HCTZ)
c) Enalapril (Vasotec)
d) Amlodipine (Norvasc)
Answer: c) Enalapril (Vasotec)
Pharmacology for Care of the Family | Complete Study Guide with
Verified Questions, Correct Answers & Detailed Rationales | Latest
Updated PDF Edition
1. A patient has been on nitroglycerin patch therapy for one month and reports that the drug no
longer relieves their angina as effectively as before. Why are nitrate-free periods every 24 hours
necessary for this patient?
a) To prevent rebound hypertension
b) To inhibit the development of tolerance
c) To reduce the risk of methemoglobinemia
d) To enhance first-pass metabolism
Answer: b) To inhibit the development of tolerance
Rationale: Continuous nitrate exposure leads to tolerance; a nitrate-free interval restores
sensitivity.
2. A 45-year-old female presents with weight loss, heat intolerance, and palpitations. Her lab
results show a very low TSH level. What does a low level of thyroid-stimulating hormone
indicate?
a) Hypothyroidism
b) Hyperthyroidism
c) Pituitary adenoma
d) Normal thyroid function
Answer: b) Hyperthyroidism
*Rationale: Low TSH with elevated T3/T4 indicates primary hyperthyroidism due to negative
feedback suppression.*
3. A newly diagnosed patient presents with a low TSH level, tachycardia, and anxiety. What
would be the best option to treat this patient's symptoms?
a) Levothyroxine (Synthroid)
b) Methimazole (Tapazole)
c) Propranolol (Inderal)
d) Radioactive iodine
Answer: c) Propranolol (Inderal)
Rationale: Beta-blockers like propranolol control adrenergic symptoms (tachycardia, anxiety) of
hyperthyroidism.
4. A patient with heart failure is started on spironolactone (Aldactone). What is the mechanism of
action of this medication?
a) Loop diuretic inhibiting sodium reabsorption
b) Aldosterone antagonist
c) Thiazide diuretic
,d) Carbonic anhydrase inhibitor
Answer: b) Aldosterone antagonist
Rationale: Spironolactone competitively blocks aldosterone receptors, reducing sodium and
water retention.
5. A hospitalized patient with a deep vein thrombosis is started on intravenous heparin. Heparin
exerts its therapeutic action by what mechanism?
a) Directly inhibiting factor Xa
b) Upregulating the activity of antithrombin III
c) Blocking vitamin K-dependent clotting factors
d) Dissolving existing clots
Answer: b) Upregulating the activity of antithrombin III
Rationale: Heparin potentiates antithrombin III, which inactivates thrombin and factor Xa.
6. A patient accidentally receives a drug to which they are highly allergic and immediately
develops wheezing, hypotension, and urticaria. What physiologic action happens when the
offending drug is administered during an anaphylactic reaction?
a) Mast cells liberate large doses of histamine
b) Complement system deactivates
c) Neutrophils release myeloperoxidase
d) Eosinophils suppress the immune response
Answer: a) Mast cells liberate large doses of histamine
Rationale: Anaphylaxis triggers mast cell degranulation and massive histamine release causing
vasodilation and bronchospasm.
7. A patient with severe plaque psoriasis has failed topical treatments. What are two systemic
psoriasis medications?
a) Methotrexate and cyclosporine
b) Phototherapy and topical corticosteroids
c) Biologics and retinoids
d) Antibiotics and antifungals
Answer: b) Phototherapy and topical corticosteroids
Rationale: Phototherapy and topical corticosteroids are systemic/mainstay treatments for
moderate to severe psoriasis.
8. A 55-year-old African American male is newly diagnosed with uncomplicated stage I
hypertension. What is the first choice of drug therapy for this patient?
a) ACE inhibitor
b) Beta-blocker
c) Thiazide diuretic
d) Calcium channel blocker
Answer: c) Thiazide diuretic
Rationale: Thiazide diuretics are first-line for uncomplicated stage I hypertension per JNC
guidelines.
,9. A patient with atrial fibrillation is started on digoxin (Lanoxin). What is the effect of cardiac
glycosides on the heart?
a) Positive chronotropic effect
b) Negative chronotropic effect
c) Positive dromotropic effect
d) No effect on heart rate
Answer: b) Negative chronotropic effect
Rationale: Cardiac glycosides slow the heart rate (negative chronotropy) by increasing vagal
tone.
10. A 32-year-old female on Depo-Provera for contraception reports that she has not had a
menstrual period in four months. Amenorrhea is the most common side effect of which birth
control medication?
a) Ethinyl estradiol (Ortho Tri-Cyclen)
b) Medroxyprogesterone (Depo-Provera)
c) Etonogestrel (Nexplanon)
d) Levonorgestrel (Mirena)
Answer: b) Medroxyprogesterone (Depo-Provera)
Rationale: Amenorrhea is very common with Depo-Provera due to prolonged progestin-induced
endometrial thinning.
11. A patient with hypertension is prescribed atenolol (Tenormin). What is the mechanism of
action of this antihypertensive agent?
a) Blocks calcium channels in vascular smooth muscle
b) Competes with epinephrine for available beta-receptor sites
c) Inhibits angiotensin-converting enzyme
d) Acts as a direct vasodilator
Answer: b) Competes with epinephrine for available beta-receptor sites
*Rationale: Atenolol is a cardioselective beta-blocker that competitively blocks beta-1
receptors.*
12. A patient with stable angina is prescribed nitroglycerin. What type of action do nitrates have
on the body?
a) Increased systemic arterial tone
b) Reduction in systemic venous tone
c) Increased cardiac contractility
d) Increased heart rate
Answer: b) Reduction in systemic venous tone
Rationale: Nitrates primarily cause venodilation, reducing preload and myocardial oxygen
demand.
13. A 68-year-old patient with known coronary artery disease has an LDL level of 130 mg/dL.
What is the recommended level of low-density lipoprotein cholesterol (LDL) for patients with
known coronary artery disease?
a) 200 mg/dL or less
, b) 160 mg/dL or less
c) 130 mg/dL or less
d) *100 mg/dL or less*
*Answer: d) 100 mg/dL or less*
*Rationale: LDL goal for established CAD is <100 mg/dL; very high-risk patients may target
<70 mg/dL.*
14. A patient with a cardiac dysrhythmia is started on a Group IV antiarrhythmic drug. What is
the mechanism of action of Group IV anti-dysrhythmia drugs?
a) Blocking sodium channels
b) Blocking potassium channels
c) Depressing phase 4 depolarization and lengthening phases 1 and 2 repolarization
d) Blocking beta-adrenergic receptors
Answer: c) Depressing phase 4 depolarization and lengthening phases 1 and 2 repolarization
Rationale: Group IV (calcium channel blockers) depress phase 4 and prolong repolarization in
nodal tissue.
15. A 28-year-old female is diagnosed with Graves' disease and has significant hyperthyroidism.
Which drug therapy should be used to lower the serum concentration of thyroid hormones and
re-establish eumetabolic state?
a) Beta-blockers alone
b) Anti-thyroid drugs
c) Iodine supplements
d) Levothyroxine
Answer: b) Anti-thyroid drugs
Rationale: Methimazole or propylthiouracil (anti-thyroid drugs) inhibit thyroid hormone
synthesis.
16. A patient with stage I hypertension also has renal insufficiency. Which type of diuretic would
be most appropriate for this patient?
a) Thiazide diuretic
b) Potassium-sparing diuretic
c) Loop diuretic
d) Carbonic anhydrase inhibitor
Answer: c) Loop diuretic
Rationale: Loop diuretics remain effective in renal insufficiency when thiazides fail due to
reduced GFR.
17. A client with hypertension and concomitant heart failure needs first-line therapy. What drug
should be considered as first-line therapy for this patient?
a) Metoprolol (Lopressor)
b) Hydrochlorothiazide (HCTZ)
c) Enalapril (Vasotec)
d) Amlodipine (Norvasc)
Answer: c) Enalapril (Vasotec)
