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NR 565 / NR 565 Advanced Pharmacology Care of the
Fundamentals Final Exam | Chamberlain University |
Endocrinology, Respiratory, Gastroenterology, Infectious
Disease, Immunology |with Rationales
Exam Structure:
Subject: Advanced Pharmacology / Endocrinology / Respiratory / Gastroenterology /
Infectious Disease / Immunology
Source: NR 565 / NR 565 Advanced Pharmacology Care of the Fundamentals – Final
Exam (Chamberlain University) – 2026
Format: Open-ended questions with Correct Answers and rationales
1. What are the signs and symptoms of hypothyroidism?
Correct Answer: Face is pale, puffy, and expressionless. Skin is cold and
dry. Hair is brittle, and hair loss occurs. Heart rate and temperature are
lowered. The patient experiences lethargy, fatigue, and intolerance to cold.
Mentation may be impaired.
Rationale:
1. Hypothyroidism reduces metabolic rate, causing decreased heat production
(cold intolerance, low body temperature).
2. Accumulation of glycosaminoglycans in the skin causes myxedema (puffy
face, dry skin).
3. Bradycardia and lethargy result from decreased sympathetic nervous
system activity.
4. Cognitive impairment (brain fog) occurs due to reduced cerebral
metabolism.
2. What are the signs and symptoms of hyperthyroidism?
Correct Answer: Heart rate is rapid; possible arrhythmia/angina.
Nervousness, insomnia, rapid thought flow, and rapid speech. Skeletal
muscles may weaken and atrophy. Metabolic rate is raised, resulting in
, 2|Page
increased heat production, increased body temperature, intolerance to
heat, and skin that is warm and moist. Weight loss occurs if caloric intake
fails to match the increase in metabolic rate.
Rationale:
1. Increased thyroid hormone levels stimulate β-adrenergic receptors,
causing tachycardia and anxiety.
2. Hypermetabolism increases heat production (warm, moist skin, heat
intolerance).
3. Increased basal metabolic rate leads to weight loss despite normal or
increased appetite.
4. Muscle wasting results from protein catabolism.
3. What is severe hypothyroidism called?
Correct Answer: Myxedema
Rationale:
1. Myxedema is the most severe form of hypothyroidism.
2. It is characterized by non-pitting edema (myxedema) due to
accumulation of hydrophilic mucopolysaccharides in the skin.
3. Myxedema coma is a life-threatening emergency requiring immediate
treatment.
4. What is the treatment for hypothyroidism?
Correct Answer: Levothyroxine is the drug of choice for most patients who
require thyroid hormone replacement.
Rationale:
1. Levothyroxine (T4) is converted to the active hormone triiodothyronine
(T3) in peripheral tissues.
2. It has a long half-life (7 days), allowing once-daily dosing.
3. It is preferred over desiccated thyroid or liothyronine due to consistent
potency and predictable absorption.
5. What is the therapeutic goal of Levothyroxine (Synthroid)?
Correct Answer: Resolution of signs and symptoms of hypothyroidism and
restoration of normal laboratory values for serum thyroid-stimulating
hormone (TSH) and free thyroxine (T4).
Rationale:
1. TSH is the most sensitive marker for thyroid status in primary
, 3|Page
hypothyroidism.
2. Normalization of TSH indicates adequate replacement and prevents
overtreatment (iatrogenic hyperthyroidism).
3. Resolution of clinical symptoms confirms therapeutic effectiveness.
6. What are the major forms of hyperthyroidism?
Correct Answer: Graves' disease and toxic nodular goiter (also known as
Plummer disease).
Rationale:
1. Graves' disease is an autoimmune disorder caused by TSH receptor-
stimulating antibodies.
2. Toxic nodular goiter involves autonomously functioning thyroid nodules
that produce excess thyroid hormone independent of TSH.
3. Both cause hyperthyroidism but have different underlying mechanisms and
treatments.
7. What is Graves' disease?
Correct Answer: Most common cause of excessive thyroid hormone
secretion
Rationale:
1. Graves' disease accounts for 60-80% of hyperthyroidism cases.
2. It is caused by autoantibodies that stimulate the TSH receptor.
3. Associated with ophthalmopathy (exophthalmos) and pretibial myxedema.
8. What adjunctive therapy is good to prescribe to control symptoms
of hyperthyroidism other than thyroid-specific medications?
Correct Answer: β-Blockers and nonradioactive iodine may be used as
adjunctive therapy. β-Blockers suppress tachycardia by blocking β-
receptors on the heart. Nonradioactive iodine inhibits synthesis and release
of thyroid hormones.
Rationale:
1. β-Blockers (propranolol) control adrenergic symptoms (tachycardia,
tremor, anxiety) within hours.
2. Nonradioactive iodine (Lugol's solution, SSKI) rapidly inhibits thyroid
hormone release and is used before thyroidectomy.
3. These agents provide symptomatic relief while definitive therapy
(methimazole, radioactive iodine) takes effect.
, 4|Page
9. What are the monitoring needs and intervals for Levothyroxine?
Correct Answer: Check TSH 6-8 weeks after initiating therapy and after
any dosage change. Check TSH at least once a year after serum TSH is
stabilized.
Rationale:
1. TSH changes slowly; 6-8 weeks allows steady state to be reached after
dose adjustment.
2. Annual monitoring ensures continued euthyroidism and detects non-
adherence or changing thyroid status.
3. More frequent monitoring is needed during pregnancy or with interacting
medications.
10. How is hyperthyroidism treated?
Correct Answer: Thionamide drugs—methimazole and propylthiouracil
(PTU)—suppress synthesis of thyroid hormones.
Rationale:
1. Thionamides inhibit thyroid peroxidase, blocking iodination of
thyroglobulin and coupling of iodotyrosines.
2. Methimazole is preferred due to once-daily dosing and lower risk of
hepatotoxicity.
3. PTU is reserved for first trimester of pregnancy and thyroid storm.
11. What is the therapeutic goal of Methimazole?
Correct Answer: (1) reduction of thyroid hormone production in Graves'
disease, (2) control of hyperthyroidism until the effects of radiation on the
thyroid become manifest, (3) suppression of thyroid hormone production
before subtotal thyroidectomy, (4) treatment of thyrotoxic crisis.
Rationale:
1. Methimazole does not destroy thyroid tissue; it suppresses hormone
synthesis.
2. It is used as definitive therapy, as a bridge to radioactive iodine, or
preoperatively.
3. In thyroid storm, it is given with β-blockers, iodine, and corticosteroids.
12. What are the monitoring needs and intervals for Methimazole?
NR 565 / NR 565 Advanced Pharmacology Care of the
Fundamentals Final Exam | Chamberlain University |
Endocrinology, Respiratory, Gastroenterology, Infectious
Disease, Immunology |with Rationales
Exam Structure:
Subject: Advanced Pharmacology / Endocrinology / Respiratory / Gastroenterology /
Infectious Disease / Immunology
Source: NR 565 / NR 565 Advanced Pharmacology Care of the Fundamentals – Final
Exam (Chamberlain University) – 2026
Format: Open-ended questions with Correct Answers and rationales
1. What are the signs and symptoms of hypothyroidism?
Correct Answer: Face is pale, puffy, and expressionless. Skin is cold and
dry. Hair is brittle, and hair loss occurs. Heart rate and temperature are
lowered. The patient experiences lethargy, fatigue, and intolerance to cold.
Mentation may be impaired.
Rationale:
1. Hypothyroidism reduces metabolic rate, causing decreased heat production
(cold intolerance, low body temperature).
2. Accumulation of glycosaminoglycans in the skin causes myxedema (puffy
face, dry skin).
3. Bradycardia and lethargy result from decreased sympathetic nervous
system activity.
4. Cognitive impairment (brain fog) occurs due to reduced cerebral
metabolism.
2. What are the signs and symptoms of hyperthyroidism?
Correct Answer: Heart rate is rapid; possible arrhythmia/angina.
Nervousness, insomnia, rapid thought flow, and rapid speech. Skeletal
muscles may weaken and atrophy. Metabolic rate is raised, resulting in
, 2|Page
increased heat production, increased body temperature, intolerance to
heat, and skin that is warm and moist. Weight loss occurs if caloric intake
fails to match the increase in metabolic rate.
Rationale:
1. Increased thyroid hormone levels stimulate β-adrenergic receptors,
causing tachycardia and anxiety.
2. Hypermetabolism increases heat production (warm, moist skin, heat
intolerance).
3. Increased basal metabolic rate leads to weight loss despite normal or
increased appetite.
4. Muscle wasting results from protein catabolism.
3. What is severe hypothyroidism called?
Correct Answer: Myxedema
Rationale:
1. Myxedema is the most severe form of hypothyroidism.
2. It is characterized by non-pitting edema (myxedema) due to
accumulation of hydrophilic mucopolysaccharides in the skin.
3. Myxedema coma is a life-threatening emergency requiring immediate
treatment.
4. What is the treatment for hypothyroidism?
Correct Answer: Levothyroxine is the drug of choice for most patients who
require thyroid hormone replacement.
Rationale:
1. Levothyroxine (T4) is converted to the active hormone triiodothyronine
(T3) in peripheral tissues.
2. It has a long half-life (7 days), allowing once-daily dosing.
3. It is preferred over desiccated thyroid or liothyronine due to consistent
potency and predictable absorption.
5. What is the therapeutic goal of Levothyroxine (Synthroid)?
Correct Answer: Resolution of signs and symptoms of hypothyroidism and
restoration of normal laboratory values for serum thyroid-stimulating
hormone (TSH) and free thyroxine (T4).
Rationale:
1. TSH is the most sensitive marker for thyroid status in primary
, 3|Page
hypothyroidism.
2. Normalization of TSH indicates adequate replacement and prevents
overtreatment (iatrogenic hyperthyroidism).
3. Resolution of clinical symptoms confirms therapeutic effectiveness.
6. What are the major forms of hyperthyroidism?
Correct Answer: Graves' disease and toxic nodular goiter (also known as
Plummer disease).
Rationale:
1. Graves' disease is an autoimmune disorder caused by TSH receptor-
stimulating antibodies.
2. Toxic nodular goiter involves autonomously functioning thyroid nodules
that produce excess thyroid hormone independent of TSH.
3. Both cause hyperthyroidism but have different underlying mechanisms and
treatments.
7. What is Graves' disease?
Correct Answer: Most common cause of excessive thyroid hormone
secretion
Rationale:
1. Graves' disease accounts for 60-80% of hyperthyroidism cases.
2. It is caused by autoantibodies that stimulate the TSH receptor.
3. Associated with ophthalmopathy (exophthalmos) and pretibial myxedema.
8. What adjunctive therapy is good to prescribe to control symptoms
of hyperthyroidism other than thyroid-specific medications?
Correct Answer: β-Blockers and nonradioactive iodine may be used as
adjunctive therapy. β-Blockers suppress tachycardia by blocking β-
receptors on the heart. Nonradioactive iodine inhibits synthesis and release
of thyroid hormones.
Rationale:
1. β-Blockers (propranolol) control adrenergic symptoms (tachycardia,
tremor, anxiety) within hours.
2. Nonradioactive iodine (Lugol's solution, SSKI) rapidly inhibits thyroid
hormone release and is used before thyroidectomy.
3. These agents provide symptomatic relief while definitive therapy
(methimazole, radioactive iodine) takes effect.
, 4|Page
9. What are the monitoring needs and intervals for Levothyroxine?
Correct Answer: Check TSH 6-8 weeks after initiating therapy and after
any dosage change. Check TSH at least once a year after serum TSH is
stabilized.
Rationale:
1. TSH changes slowly; 6-8 weeks allows steady state to be reached after
dose adjustment.
2. Annual monitoring ensures continued euthyroidism and detects non-
adherence or changing thyroid status.
3. More frequent monitoring is needed during pregnancy or with interacting
medications.
10. How is hyperthyroidism treated?
Correct Answer: Thionamide drugs—methimazole and propylthiouracil
(PTU)—suppress synthesis of thyroid hormones.
Rationale:
1. Thionamides inhibit thyroid peroxidase, blocking iodination of
thyroglobulin and coupling of iodotyrosines.
2. Methimazole is preferred due to once-daily dosing and lower risk of
hepatotoxicity.
3. PTU is reserved for first trimester of pregnancy and thyroid storm.
11. What is the therapeutic goal of Methimazole?
Correct Answer: (1) reduction of thyroid hormone production in Graves'
disease, (2) control of hyperthyroidism until the effects of radiation on the
thyroid become manifest, (3) suppression of thyroid hormone production
before subtotal thyroidectomy, (4) treatment of thyrotoxic crisis.
Rationale:
1. Methimazole does not destroy thyroid tissue; it suppresses hormone
synthesis.
2. It is used as definitive therapy, as a bridge to radioactive iodine, or
preoperatively.
3. In thyroid storm, it is given with β-blockers, iodine, and corticosteroids.
12. What are the monitoring needs and intervals for Methimazole?
