A patient is diagnosed with a simple goiter and asks the nurse what caused it. What is the nurse's best response?
A) A goiter is the result of too much thyroxine.
B) A goiter is the result of a chloride deficiency.
C) A goiter is the result of too much TSH.
D) A goiter is the result of an iodine deficiency.
C
Feedback:
Goiter (enlargement of the thyroid gland) is an effect of hyperthyroidism, which occurs when the thyroid is overstimulated by thyroid stimulating hormone (TSH). This can happen if the thyroid gland does not produce sufficient thyroid hormones to turn off the hypothalamus and anterior pituitary. In the body's attempt to produce the needed amount of thyroid hormone, the thyroid is continually stimulated by increasing levels of TSH. There is a deficiency of thyroxine. It is not related to chloride or iodine deficiencies.
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