ESTUDYR
NUR 200 TEST 3 UPDATED EXAM WITH MOST TESTED
QUESTIONS AND ANSWERS | GRADED A+ | ASSURED SUCCESS
WITH DETAILED RATIONALES
1. Most common cause of primary hypothyroidism is:
A. Pituitary failure
B. Hashimoto’s disease (autoimmune). (Correct)
C. Iodine excess
D. Thyroidectomy
Rationale: Hashimoto’s autoimmune destruction of the thyroid is the leading cause of
hypothyroidism in developed countries.
2. A classic early symptom of hypothyroidism is:
A. Weight loss and heat intolerance
B. Fatigue and depression. (Correct)
C. Exophthalmos
D. Hypertension
Rationale: Hypothyroidism typically causes fatigue, depression, cold intolerance, weight gain
(later), and slowed metabolism.
3. Best long-term treatment for hypothyroidism is:
A. Methimazole
B. Radioactive iodine
C. Levothyroxine (Synthroid). (Correct)
D. Propylthiouracil (PTU)
Rationale: Levothyroxine is synthetic T4 replacement used lifelong to restore normal thyroid
hormone levels.
4. Myxedema coma is most likely triggered by:
A. Excess levothyroxine intake
B. Infection, stress, or stopping thyroid meds. (Correct)
, ESTUDYR
C. Hyperthyroidism treatment only
D. High-iodine diet
Rationale: Myxedema coma is severe hypothyroidism precipitated by stressors like infection or
medication nonadherence.
5. Immediate treatment for myxedema coma includes:
A. Oral methimazole
B. IV levothyroxine and careful fluids; warming with blankets only. (Correct)
C. Radioactive iodine therapy
D. Aspirin and cooling blankets
Rationale: IV thyroid hormone, cautious fluid support, vasopressors if needed; avoid rapid
external rewarming which can worsen instability.
6. Most common cause of hyperthyroidism is:
A. Graves’ disease (autoimmune). (Correct)
B. Hashimoto’s disease
C. Diabetes insipidus
D. Addison’s disease
Rationale: Graves’ disease causes excess T4/T3 production via TSH receptor-stimulating
antibodies.
7. Typical features of hyperthyroidism include all EXCEPT:
A. Weight loss
B. Heat intolerance
C. Bradycardia (Correct)
D. Anxiety and tremors
Rationale: Hyperthyroidism usually causes tachycardia, not bradycardia.
8. Diagnosis of primary hyperthyroidism usually shows:
A. High TSH, low T4
B. Low TSH, high T4. (Correct)
NUR 200 TEST 3 UPDATED EXAM WITH MOST TESTED
QUESTIONS AND ANSWERS | GRADED A+ | ASSURED SUCCESS
WITH DETAILED RATIONALES
1. Most common cause of primary hypothyroidism is:
A. Pituitary failure
B. Hashimoto’s disease (autoimmune). (Correct)
C. Iodine excess
D. Thyroidectomy
Rationale: Hashimoto’s autoimmune destruction of the thyroid is the leading cause of
hypothyroidism in developed countries.
2. A classic early symptom of hypothyroidism is:
A. Weight loss and heat intolerance
B. Fatigue and depression. (Correct)
C. Exophthalmos
D. Hypertension
Rationale: Hypothyroidism typically causes fatigue, depression, cold intolerance, weight gain
(later), and slowed metabolism.
3. Best long-term treatment for hypothyroidism is:
A. Methimazole
B. Radioactive iodine
C. Levothyroxine (Synthroid). (Correct)
D. Propylthiouracil (PTU)
Rationale: Levothyroxine is synthetic T4 replacement used lifelong to restore normal thyroid
hormone levels.
4. Myxedema coma is most likely triggered by:
A. Excess levothyroxine intake
B. Infection, stress, or stopping thyroid meds. (Correct)
, ESTUDYR
C. Hyperthyroidism treatment only
D. High-iodine diet
Rationale: Myxedema coma is severe hypothyroidism precipitated by stressors like infection or
medication nonadherence.
5. Immediate treatment for myxedema coma includes:
A. Oral methimazole
B. IV levothyroxine and careful fluids; warming with blankets only. (Correct)
C. Radioactive iodine therapy
D. Aspirin and cooling blankets
Rationale: IV thyroid hormone, cautious fluid support, vasopressors if needed; avoid rapid
external rewarming which can worsen instability.
6. Most common cause of hyperthyroidism is:
A. Graves’ disease (autoimmune). (Correct)
B. Hashimoto’s disease
C. Diabetes insipidus
D. Addison’s disease
Rationale: Graves’ disease causes excess T4/T3 production via TSH receptor-stimulating
antibodies.
7. Typical features of hyperthyroidism include all EXCEPT:
A. Weight loss
B. Heat intolerance
C. Bradycardia (Correct)
D. Anxiety and tremors
Rationale: Hyperthyroidism usually causes tachycardia, not bradycardia.
8. Diagnosis of primary hyperthyroidism usually shows:
A. High TSH, low T4
B. Low TSH, high T4. (Correct)
