A nurse is reinforcing teaching with a client who is scheduled for a blood test to measure her thyroid stimulating hormone (TSH) level. Which of the following statements should the nurse give?
“This test detects antithyroid antibodies in your blood.”
“This test measures the amount of thyroid hormone that ataches to a protein in your blood.”
“This test determines whether your thyroid gland is overactive, appropriately active, or underactive.”
“This test measures the absorption of iodine and how it relates to the thyroid gland.”
The Correct Answer is C
Choice A reason: This test does not detect antithyroid antibodies in your blood. Antithyroid antibodies are proteins that atack the thyroid gland and can cause autoimmune thyroid diseases, such as Hashimoto’s thyroiditis or Graves’ disease. To detect antithyroid antibodies, you need a different blood test called the thyroid peroxidase (TPO) antibody test.
Choice B reason: This test does not measure the amount of thyroid hormone that ataches to a protein in your blood. Thyroid hormone can exist in two forms in the blood: free or bound. Free thyroid hormone is not atached to any protein and can enter the cells and tissues where it is needed. Bound thyroid hormone is atached to a protein called thyroxine-binding globulin (TBG) and cannot enter the cells and tissues. To measure the amount of thyroid hormone that ataches to TBG, you need a different blood test called the total thyroxine (T4) test.
Choice C reason: This test determines whether your thyroid gland is overactive, appropriately active, or underactive. TSH is a hormone produced by the pituitary gland that stimulates the thyroid gland to make and release thyroid hormones, such as thyroxine (T4) and triiodothyronine (T3). These hormones regulate many body functions, such as metabolism, growth, and development. The TSH test measures the amount of TSH in the blood and reflects how well the thyroid gland is working. If the TSH level is high, it means that the thyroid gland is underactive (hypothyroidism) and not making enough thyroid hormones. If the TSH level is low, it means that the thyroid gland is overactive (hyperthyroidism) and making too much thyroid hormones.
Choice D reason: This test does not measure the absorption of iodine and how it relates to the thyroid gland. Iodine is a mineral that is essential for the production of thyroid hormones. The thyroid gland absorbs iodine from the food and water we consume and uses it to make T4 and T3. To measure the absorption of iodine by the thyroid gland, you need a different test called the radioactive iodine uptake (RAIU) test.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Phosphate 5.7 mg/dL is an elevated value, as the normal range is 2.5 to 4.5 mg/dL. Hypoparathyroidism causes low levels of parathyroid hormone (PTH), which regulates calcium and phosphorus balance in the body. Low PTH leads to low calcium and high phosphorus levels in the blood.
Choice B reason: Vitamin D 25 ng/mL is a normal value, as the normal range is 20 to 50 ng/mL. Hypoparathyroidism does not directly affect vitamin D levels, but vitamin D supplements may be given to help increase calcium absorption and lower phosphorus levels in the blood.
Choice C reason: Calcium 9.8 mg/dL is a normal value, as the normal range is 8.6 to 10.2 mg/dL. Hypoparathyroidism causes low levels of parathyroid hormone (PTH), which regulates calcium and phosphorus balance in the body. Low PTH leads to low calcium and high phosphorus levels in the blood. However, calcium levels may be normal or near- normal in some cases of hypoparathyroidism, especially if the condition is mild or well-controlled with treatment.
Choice D reason: Magnesium 1.8 mEq/L is a normal value, as the normal range is 1.5 to 2.5 mEq/L. Hypoparathyroidism does not directly affect magnesium levels, but magnesium deficiency can cause or worsen hypoparathyroidism, as magnesium is needed for PTH secretion and action. Magnesium supplements may be given to correct magnesium deficiency and improve PTH function.
Correct Answer is D
Explanation
Choice A reason: Insulin injected into the thigh is not the most rapidly absorbed. The abdomen is the preferred site for insulin injection, as it has the fastest and most consistent absorption rate. The thigh, arm, and butock have slower and more variable absorption rates12.
Choice B reason: The botle of insulin should not be shaken before withdrawing the medication. Shaking can damage the insulin molecules and affect their potency and effectiveness. Instead, the botle should be gently rolled between the palms to mix the insulin evenly13.
Choice C reason: Lantus insulin should not be used immediately before each meal. Lantus is a long-acting insulin that provides a steady basal level of insulin for 24 hours. It should be taken once a day at the same time every day, regardless of meals. Humalog is a rapid-acting insulin that can be used immediately before each meal to cover the postprandial glucose spikes14.
Choice D reason: Unopened vials of insulin should be kept in the refrigerator until needed. This can help preserve their quality and potency until their expiration date. Opened vials of insulin can be kept at room temperature for up to 28 days, depending on the type and brand
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