Thyroid Disease Study Guide Nclex-Style Questions On Hypothyroidism, Hyperthyroidism & Euthyroid States

THYROID DISEASE STUDY GUIDE NCLEX-STYLE
QUESTIONS ON HYPOTHYROIDISM,
HYPERTHYROIDISM & EUTHYROID STATES



Thyroid Disease Study Guide: Hypothyroidism, Hyperthyroidism, and Thyroid
Disorders
1. A patient presents with a normal functioning thyroid gland. What is the
correct medical term for this condition?
A. Myxedema
B. Euthyroid
C. Thyrotoxicosis
D. Cretinism
Correct Answer: B. Euthyroid
Explanation: Euthyroid is the specific term used to describe a thyroid gland that is
functioning normally, producing the correct amounts of hormones.
2. Which of the following hormones is NOT secreted by the thyroid gland?
A. Thyroxin (T4)
B. Thyrotropin Releasing Hormone (TRH)
C. Triiodothyronine (T3)
D. Calcitonin
Correct Answer: B. Thyrotropin Releasing Hormone (TRH)
Explanation: TRH is released from the hypothalamus, not the thyroid gland. Its
function is to signal the pituitary gland to release TSH, which then stimulates the
thyroid.
3. A 45-year-old patient is diagnosed with hypothyroidism. What is the specific
name for this condition in an adult?
A. Cretinism
B. Goiter
C. Myxedema

,D. Thyroid storm
Correct Answer: C. Myxedema
Explanation: Myxedema is the term for severe hypothyroidism in adults. It is
characterized by a non-pitting edema, especially around the eyes, hands, and feet,
and other symptoms of slowed metabolism.
4. What is the approximate mortality rate associated with myxedema, a severe
form of adult hypothyroidism?
A. 10%
B. 25%
C. 50%
D. 75%
Correct Answer: C. 50%
Explanation: Myxedema is a life-threatening condition. If left untreated or not
treated aggressively, the mortality rate can be as high as 50%, often due to cardiac
or respiratory complications.
5. A nurse is reviewing the manifestations of hyperthyroidism. Which of the
following is the life-threatening manifestation with a high mortality rate?
A. Grave's disease
B. Thyrotoxicosis
C. Myxedema
D. Thyroid storm
Correct Answer: D. Thyroid storm
Explanation: Thyroid storm is a sudden, severe exacerbation of hyperthyroidism. It
is a medical emergency with a high mortality rate if not recognized and treated
promptly.
6. Which of the following is a correct list of the three hormones secreted by the
thyroid gland?
A. TRH, TSH, T4
B. T3, T4, Calcitonin
C. T3, TSH, TRH
D. Calcitonin, TSH, T3

,Correct Answer: B. T3, T4, Calcitonin
Explanation: The thyroid gland produces and secretes three main hormones:
triiodothyronine (T3), thyroxin (T4), and calcitonin, which is involved in calcium
regulation.
7. The term "cretinism" is used to describe hypothyroidism in which population?
A. Children
B. Elderly
C. Adults
D. Pregnant women
Correct Answer: A. Children
Explanation: Cretinism is the term for severe, untreated hypothyroidism in infancy
and childhood. It leads to significant physical and mental developmental delays.
8. What are the three main types of thyroid conditions?
A. Grave's disease, thyroiditis, goiter
B. Primary, secondary, tertiary
C. Hypothyroidism, hyperthyroidism, euthyroid
D. T3 toxicosis, Hashimoto's, thyroid cancer
Correct Answer: C. Hypothyroidism, hyperthyroidism, euthyroid
Explanation: The classifications are based on the functional status of the thyroid
gland. Hypothyroidism is underactive, hyperthyroidism is overactive, and euthyroid
is normal function.
9. A patient is diagnosed with thyrotoxicosis. Which of the following is the most
common cause of this condition?
A. Thyroiditis
B. Grave's disease
C. Iodine deficiency
D. Pituitary adenoma
Correct Answer: B. Grave's disease
Explanation: Thyrotoxicosis is a state of excess thyroid hormones in the body. The
most common cause is Graves' disease, an autoimmune disorder that stimulates
the thyroid to produce excessive amounts of T3 and T4.

, 10. The hormone Thyrotropin Releasing Hormone (TRH) is produced and
released by which structure?
A. Thyroid Gland
B. Pituitary Gland
C. Hypothalamus
D. Adrenal Gland
Correct Answer: C. Hypothalamus
Explanation: The hypothalamus releases TRH as the first step in the hypothalamic-
pituitary-thyroid (HPT) axis. TRH travels to the anterior pituitary to stimulate the
release of TSH.
11. A child with severe, untreated hypothyroidism is likely to be diagnosed with:
A. Myxedema
B. Euthyroid
C. Thyrotoxicosis
D. Cretinism
Correct Answer: D. Cretinism
Explanation: This is the specific historical term for this condition. Early detection
and treatment with thyroid hormone replacement can prevent the severe
intellectual disability and growth failure associated with cretinism.
12. Which of the following is NOT a hormone secreted by the thyroid gland?
A. Calcitonin
B. Triiodothyronine (T3)
C. Thyroxin (T4)
D. Thyroid Stimulating Hormone (TSH)
Correct Answer: D. Thyroid Stimulating Hormone (TSH)
Explanation: TSH is secreted by the anterior pituitary gland to regulate the thyroid.
It is not a product of the thyroid gland itself.
13. A patient is in a state of profound hypermetabolism, with a high fever,
tachycardia, and altered mental status. This is consistent with which condition?
A. Myxedema
B. Euthyroid