Practice Quiz

CMSRN Medical-Surgical Nursing

Category - Endocrine

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The most accurate description a nurse could give a colleague about a thyroid scan is that it:
  1. Assists in differentiating between primary and secondary hypothyroidism
  2. Demonstrates increased uptake of radioactive iodine in areas of possible malignancy
  3. Demonstrates decreased uptake of radioactive iodine in areas of possible malignancy
  4. Measures the effect of TSH on thyroid function
Explanation
Answer - C - A thyroid scan utilizes the uptake of radioactive iodine by the thyroid gland to determine the size, shape, and function of the gland. Also identified are areas of increased uptake (hot areas), indicating increased metabolic function, as in hyperthyroidism, not malignancy (choice B) and areas of decreased or no uptake (cold areas), which are associated with malignancy. Choices A and D both describe the TSH stimulation test.
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