1|Page
NR 565 Final Examination - 250 MCQs with Highlighted
99%Correct Answers REINFORCED WITH SUFFICIENT
RATIONALES
1. A 34-year-old female patient presents with fatigue, weight gain, cold intolerance, and dry skin. Her TSH is
8.2 mIU/L and free T4 is 0.6 ng/dL. What is the most appropriate next step in management?
A) Initiate methimazole 5 mg daily
B) Start levothyroxine 25 mcg daily and recheck TSH in 6-8 weeks
C) Order thyroid ultrasound and radioactive iodine uptake scan
D) Prescribe propylthiouracil 50 mg three times daily
Rationale: This patient presents with classic hypothyroidism symptoms confirmed by elevated TSH and low free T4.
Levothyroxine is the standard replacement therapy, and TSH should be rechecked 6-8 weeks after initiation to assess
response and adjust dosing as needed.
2. A 28-year-old pregnant woman at 10 weeks gestation with known hypothyroidism asks about the
importance of taking her levothyroxine during pregnancy. What is the most accurate information the NP
should provide?
A) Thyroid hormone requirements typically decrease during pregnancy
B) Untreated hypothyroidism during the first trimester can cause permanent neuropsychological deficits in
the child
C) Levothyroxine should be discontinued during the first trimester to protect the fetus
D) Fetal thyroid hormone production begins at 4 weeks gestation
Rationale: The fetus cannot produce its own thyroid hormone during the first trimester, making it entirely dependent
on maternal thyroid hormone. Untreated hypothyroidism during this critical period can result in permanent
cognitive impairment and decreased IQ in the child.
3. A patient with hyperthyroidism is experiencing severe tachycardia, restlessness, agitation, and a
temperature of 105°F. What is the most appropriate treatment regimen for this emergent condition?
A) Levothyroxine 100 mcg daily and beta-blocker therapy
B) High-dose potassium iodide, methimazole, beta-blocker, glucocorticoids, and cooling measures
C) Propylthiouracil monotherapy with close monitoring
D) Radioactive iodine ablation therapy
Rationale: This presentation is consistent with thyroid storm, a life-threatening condition requiring immediate
intervention. Potassium iodide suppresses thyroid hormone release, methimazole blocks synthesis, beta-blockers
control tachycardia, and glucocorticoids along with cooling measures address the hypermetabolic crisis.
4. A 45-year-old patient on levothyroxine therapy reports starting calcium supplements for osteoporosis
prevention. What is the most appropriate patient education regarding this combination?
,2|Page
A) Calcium supplements enhance levothyroxine absorption and the dose should be decreased
B) Calcium significantly reduces levothyroxine absorption, so levothyroxine should be taken at least 4 hours
apart from calcium
C) There is no interaction between levothyroxine and calcium supplements
D) Calcium supplements should be taken simultaneously with levothyroxine to improve bone health
Rationale: Calcium, iron, magnesium, and antacids can significantly reduce levothyroxine absorption. Patients
should separate administration by at least 4 hours to ensure adequate thyroid hormone replacement and maintain
therapeutic efficacy.
5. A patient's laboratory results show a low TSH, normal T4, and elevated T3. What condition does this most
likely indicate?
A) Primary hypothyroidism
B) Secondary hypothyroidism
C) Subclinical hypothyroidism
D) Hyperthyroidism
Rationale: In hyperthyroidism, TSH is suppressed (low) due to negative feedback from elevated thyroid hormones.
T3 is typically elevated earlier and more significantly than T4, making this pattern characteristic of
hyperthyroidism, particularly in early or T3-predominant disease.
6. A 62-year-old patient recently started on levothyroxine 50 mcg daily reports feeling worse with increased
fatigue. Her TSH is now 12.5 mIU/L. What is the most appropriate next step?
A) Discontinue levothyroxine immediately
B) Decrease levothyroxine to 25 mcg daily
C) Increase levothyroxine to 75 mcg daily and recheck TSH in 6-8 weeks
D) Add liothyronine (T3) to the regimen
Rationale: A TSH of 12.5 mIU/L indicates inadequate thyroid hormone replacement. The dose should be increased,
and TSH rechecked in 6-8 weeks, which is the standard interval for monitoring after dosage adjustments to allow
steady-state levels to be achieved.
7. Which beta-blocker characteristic makes it particularly useful for managing symptoms of
hyperthyroidism?
A) Selective beta-1 antagonism only
B) Non-selective beta-blockade that reduces tachycardia, tremors, and anxiety
C) Alpha-1 receptor blockade properties
D) Calcium channel blocking activity
Rationale: Beta-blockers, particularly non-selective agents like propranolol, effectively manage the sympathetic
symptoms of hyperthyroidism including tachycardia, tremors, anxiety, and palpitations. They do not treat the
underlying hyperthyroidism but provide symptomatic relief.
8. A patient with Graves' disease is being treated with methimazole. After 4 weeks of therapy, she develops
fever, sore throat, and malaise. What is the most likely concern and appropriate action?
,3|Page
A) Normal side effects requiring no intervention
B) Agranulocytosis; discontinue methimazole immediately and check CBC
C) Thyroid storm requiring hospitalization
D) Drug-induced lupus requiring monitoring
Rationale: Agranulocytosis is a serious adverse effect of methimazole that presents with fever, sore throat, and
malaise. When suspected, the medication should be discontinued immediately and a CBC obtained to evaluate
neutrophil counts, as this can be life-threatening if not addressed promptly.
9. A patient with known hypothyroidism is planning to become pregnant. What should the NP advise
regarding levothyroxine dosing?
A) Maintain current dose throughout pregnancy
B) Decrease dose by 25% during the first trimester
C) Increase dose by approximately 50% between weeks 4-8 of gestation
D) Switch to methimazole during pregnancy
Rationale: Pregnancy increases thyroid hormone requirements significantly, with dosage typically needing to
increase by about 50% between weeks 4-8 of gestation. Levels usually stabilize by week 16, but close monitoring
throughout pregnancy is essential for optimal maternal and fetal outcomes.
10. What is the recommended monitoring frequency for TSH once a patient is stabilized on levothyroxine
therapy?
A) Every 2 weeks
B) Every 3 months
C) Every 6 months
D) At least once yearly
Rationale: After achieving a stable euthyroid state, TSH should be checked at least annually to ensure continued
appropriate dosing. More frequent monitoring may be needed if symptoms develop, if other medications are added,
or if there are changes in the patient's clinical status.
11. A 58-year-old male with type 2 diabetes has an A1C of 7.8% on metformin monotherapy. According to the
ADA treatment algorithm, what is the most appropriate next step?
A) Continue metformin and add basal insulin
B) Add a second agent such as a GLP-1 receptor agonist, SGLT-2 inhibitor, DPP-4 inhibitor, or TZD
C) Discontinue metformin and start insulin therapy
D) Increase metformin to maximum dose and recheck A1C in 6 months
Rationale: The ADA algorithm recommends stepwise therapy. At diagnosis, lifestyle changes plus metformin are
initiated. If A1C remains above goal on metformin monotherapy, step 2 involves adding a second agent from one of
several classes, including GLP-1 agonists, SGLT-2 inhibitors, DPP-4 inhibitors, or TZDs.
12. A patient with newly diagnosed type 2 diabetes has an A1C of 10.5% and fasting glucose of 320 mg/dL
with polyuria and polydipsia. What is the most appropriate initial treatment approach?
, 4|Page
A) Lifestyle modifications only with 3-month follow-up
B) Metformin monotherapy with gradual titration
C) Metformin plus a second oral agent
D) Combination injectable therapy including insulin
Rationale: Patients presenting with A1C of 10% or greater or fasting glucose of 300 mg/dL or greater with
symptoms should start at step 4 of the ADA algorithm with combination injectable therapy including insulin. This
represents significant hyperglycemia requiring immediate intensive intervention.
13. Which of the following laboratory values is now considered a standard diagnostic test for diabetes and
provides an estimate of glycemic control over the previous 2-3 months?
A) Fasting plasma glucose
B) Random plasma glucose
C) Oral glucose tolerance test
D) Hemoglobin A1C of 6.5% or greater
Rationale: Hemoglobin A1C of 6.5% or greater is now a standard diagnostic criterion for diabetes. It reflects
average blood glucose levels over the preceding 2-3 months and does not require fasting, making it a convenient
diagnostic and monitoring tool.
14. A 72-year-old patient with type 2 diabetes has moderate comorbidities and a life expectancy of less than 10
years. What should the A1C goal be for this patient?
A) Less than 6.5%
B) Less than 7.0%
C) 7.5-8.0%
D) 8.5-9.0%
Rationale: For older patients with moderate comorbidities and life expectancy less than 10 years, a less stringent
A1C goal of 7.5-8.0% is recommended. This balances glycemic control with the risks of hypoglycemia and treatment
burden in this vulnerable population.
15. A patient with diabetes has an A1C of 8.5% and has been stable on her current regimen. How often should
her A1C be monitored moving forward?
A) Monthly
B) Every 3 months
C) Every 4 months
D) Every 6 months
Rationale: Once the A1C has dropped to 7% or below and is stable, monitoring can be reduced to at least every 6
months. When values are above goal or during treatment adjustments, every 3 months is recommended for closer
surveillance.
16. What is the primary metabolic action of insulin in the body?
A) Stimulates glycogen breakdown and gluconeogenesis
B) Promotes protein breakdown and fatty acid oxidation
NR 565 Final Examination - 250 MCQs with Highlighted
99%Correct Answers REINFORCED WITH SUFFICIENT
RATIONALES
1. A 34-year-old female patient presents with fatigue, weight gain, cold intolerance, and dry skin. Her TSH is
8.2 mIU/L and free T4 is 0.6 ng/dL. What is the most appropriate next step in management?
A) Initiate methimazole 5 mg daily
B) Start levothyroxine 25 mcg daily and recheck TSH in 6-8 weeks
C) Order thyroid ultrasound and radioactive iodine uptake scan
D) Prescribe propylthiouracil 50 mg three times daily
Rationale: This patient presents with classic hypothyroidism symptoms confirmed by elevated TSH and low free T4.
Levothyroxine is the standard replacement therapy, and TSH should be rechecked 6-8 weeks after initiation to assess
response and adjust dosing as needed.
2. A 28-year-old pregnant woman at 10 weeks gestation with known hypothyroidism asks about the
importance of taking her levothyroxine during pregnancy. What is the most accurate information the NP
should provide?
A) Thyroid hormone requirements typically decrease during pregnancy
B) Untreated hypothyroidism during the first trimester can cause permanent neuropsychological deficits in
the child
C) Levothyroxine should be discontinued during the first trimester to protect the fetus
D) Fetal thyroid hormone production begins at 4 weeks gestation
Rationale: The fetus cannot produce its own thyroid hormone during the first trimester, making it entirely dependent
on maternal thyroid hormone. Untreated hypothyroidism during this critical period can result in permanent
cognitive impairment and decreased IQ in the child.
3. A patient with hyperthyroidism is experiencing severe tachycardia, restlessness, agitation, and a
temperature of 105°F. What is the most appropriate treatment regimen for this emergent condition?
A) Levothyroxine 100 mcg daily and beta-blocker therapy
B) High-dose potassium iodide, methimazole, beta-blocker, glucocorticoids, and cooling measures
C) Propylthiouracil monotherapy with close monitoring
D) Radioactive iodine ablation therapy
Rationale: This presentation is consistent with thyroid storm, a life-threatening condition requiring immediate
intervention. Potassium iodide suppresses thyroid hormone release, methimazole blocks synthesis, beta-blockers
control tachycardia, and glucocorticoids along with cooling measures address the hypermetabolic crisis.
4. A 45-year-old patient on levothyroxine therapy reports starting calcium supplements for osteoporosis
prevention. What is the most appropriate patient education regarding this combination?
,2|Page
A) Calcium supplements enhance levothyroxine absorption and the dose should be decreased
B) Calcium significantly reduces levothyroxine absorption, so levothyroxine should be taken at least 4 hours
apart from calcium
C) There is no interaction between levothyroxine and calcium supplements
D) Calcium supplements should be taken simultaneously with levothyroxine to improve bone health
Rationale: Calcium, iron, magnesium, and antacids can significantly reduce levothyroxine absorption. Patients
should separate administration by at least 4 hours to ensure adequate thyroid hormone replacement and maintain
therapeutic efficacy.
5. A patient's laboratory results show a low TSH, normal T4, and elevated T3. What condition does this most
likely indicate?
A) Primary hypothyroidism
B) Secondary hypothyroidism
C) Subclinical hypothyroidism
D) Hyperthyroidism
Rationale: In hyperthyroidism, TSH is suppressed (low) due to negative feedback from elevated thyroid hormones.
T3 is typically elevated earlier and more significantly than T4, making this pattern characteristic of
hyperthyroidism, particularly in early or T3-predominant disease.
6. A 62-year-old patient recently started on levothyroxine 50 mcg daily reports feeling worse with increased
fatigue. Her TSH is now 12.5 mIU/L. What is the most appropriate next step?
A) Discontinue levothyroxine immediately
B) Decrease levothyroxine to 25 mcg daily
C) Increase levothyroxine to 75 mcg daily and recheck TSH in 6-8 weeks
D) Add liothyronine (T3) to the regimen
Rationale: A TSH of 12.5 mIU/L indicates inadequate thyroid hormone replacement. The dose should be increased,
and TSH rechecked in 6-8 weeks, which is the standard interval for monitoring after dosage adjustments to allow
steady-state levels to be achieved.
7. Which beta-blocker characteristic makes it particularly useful for managing symptoms of
hyperthyroidism?
A) Selective beta-1 antagonism only
B) Non-selective beta-blockade that reduces tachycardia, tremors, and anxiety
C) Alpha-1 receptor blockade properties
D) Calcium channel blocking activity
Rationale: Beta-blockers, particularly non-selective agents like propranolol, effectively manage the sympathetic
symptoms of hyperthyroidism including tachycardia, tremors, anxiety, and palpitations. They do not treat the
underlying hyperthyroidism but provide symptomatic relief.
8. A patient with Graves' disease is being treated with methimazole. After 4 weeks of therapy, she develops
fever, sore throat, and malaise. What is the most likely concern and appropriate action?
,3|Page
A) Normal side effects requiring no intervention
B) Agranulocytosis; discontinue methimazole immediately and check CBC
C) Thyroid storm requiring hospitalization
D) Drug-induced lupus requiring monitoring
Rationale: Agranulocytosis is a serious adverse effect of methimazole that presents with fever, sore throat, and
malaise. When suspected, the medication should be discontinued immediately and a CBC obtained to evaluate
neutrophil counts, as this can be life-threatening if not addressed promptly.
9. A patient with known hypothyroidism is planning to become pregnant. What should the NP advise
regarding levothyroxine dosing?
A) Maintain current dose throughout pregnancy
B) Decrease dose by 25% during the first trimester
C) Increase dose by approximately 50% between weeks 4-8 of gestation
D) Switch to methimazole during pregnancy
Rationale: Pregnancy increases thyroid hormone requirements significantly, with dosage typically needing to
increase by about 50% between weeks 4-8 of gestation. Levels usually stabilize by week 16, but close monitoring
throughout pregnancy is essential for optimal maternal and fetal outcomes.
10. What is the recommended monitoring frequency for TSH once a patient is stabilized on levothyroxine
therapy?
A) Every 2 weeks
B) Every 3 months
C) Every 6 months
D) At least once yearly
Rationale: After achieving a stable euthyroid state, TSH should be checked at least annually to ensure continued
appropriate dosing. More frequent monitoring may be needed if symptoms develop, if other medications are added,
or if there are changes in the patient's clinical status.
11. A 58-year-old male with type 2 diabetes has an A1C of 7.8% on metformin monotherapy. According to the
ADA treatment algorithm, what is the most appropriate next step?
A) Continue metformin and add basal insulin
B) Add a second agent such as a GLP-1 receptor agonist, SGLT-2 inhibitor, DPP-4 inhibitor, or TZD
C) Discontinue metformin and start insulin therapy
D) Increase metformin to maximum dose and recheck A1C in 6 months
Rationale: The ADA algorithm recommends stepwise therapy. At diagnosis, lifestyle changes plus metformin are
initiated. If A1C remains above goal on metformin monotherapy, step 2 involves adding a second agent from one of
several classes, including GLP-1 agonists, SGLT-2 inhibitors, DPP-4 inhibitors, or TZDs.
12. A patient with newly diagnosed type 2 diabetes has an A1C of 10.5% and fasting glucose of 320 mg/dL
with polyuria and polydipsia. What is the most appropriate initial treatment approach?
, 4|Page
A) Lifestyle modifications only with 3-month follow-up
B) Metformin monotherapy with gradual titration
C) Metformin plus a second oral agent
D) Combination injectable therapy including insulin
Rationale: Patients presenting with A1C of 10% or greater or fasting glucose of 300 mg/dL or greater with
symptoms should start at step 4 of the ADA algorithm with combination injectable therapy including insulin. This
represents significant hyperglycemia requiring immediate intensive intervention.
13. Which of the following laboratory values is now considered a standard diagnostic test for diabetes and
provides an estimate of glycemic control over the previous 2-3 months?
A) Fasting plasma glucose
B) Random plasma glucose
C) Oral glucose tolerance test
D) Hemoglobin A1C of 6.5% or greater
Rationale: Hemoglobin A1C of 6.5% or greater is now a standard diagnostic criterion for diabetes. It reflects
average blood glucose levels over the preceding 2-3 months and does not require fasting, making it a convenient
diagnostic and monitoring tool.
14. A 72-year-old patient with type 2 diabetes has moderate comorbidities and a life expectancy of less than 10
years. What should the A1C goal be for this patient?
A) Less than 6.5%
B) Less than 7.0%
C) 7.5-8.0%
D) 8.5-9.0%
Rationale: For older patients with moderate comorbidities and life expectancy less than 10 years, a less stringent
A1C goal of 7.5-8.0% is recommended. This balances glycemic control with the risks of hypoglycemia and treatment
burden in this vulnerable population.
15. A patient with diabetes has an A1C of 8.5% and has been stable on her current regimen. How often should
her A1C be monitored moving forward?
A) Monthly
B) Every 3 months
C) Every 4 months
D) Every 6 months
Rationale: Once the A1C has dropped to 7% or below and is stable, monitoring can be reduced to at least every 6
months. When values are above goal or during treatment adjustments, every 3 months is recommended for closer
surveillance.
16. What is the primary metabolic action of insulin in the body?
A) Stimulates glycogen breakdown and gluconeogenesis
B) Promotes protein breakdown and fatty acid oxidation
