A nurse is reviewing the medical record of a client who has hyperthyroidism (Graves disease). Which of the following serum laboratory findings should the nurse expect to be below the expected reference range?
Thyroxine (T4) level
Triiodothyronine (T3) level
Thyroid stimulating hormone (TSH) level
Glucose level
The Correct Answer is C
Choice A: Thyroxine (T4) level. This is incorrect because T4 is one of the thyroid hormones that is increased in hyperthyroidism. T4 is produced by the thyroid gland and converted to T3 in the tissues. A high level of T4 indicates overactivity of the thyroid gland.1
Choice B: Triiodothyronine (T3) level. This is incorrect because T3 is another thyroid hormone that is increased in hyperthyroidism. T3 is the more active form of thyroid hormone and regulates the metabolism of cells. A high level of T3 indicates overactivity of the thyroid gland.1
Choice C: Thyroid stimulating hormone (TSH) level. This is correct because TSH is a hormone that stimulates the thyroid gland to produce T4 and T3. TSH is produced by the pituitary gland and regulated by a feedback mechanism. When the levels of T4 and T3 are high, the pituitary gland reduces the secretion of TSH to inhibit further production of thyroid hormones. Therefore, a low level of TSH indicates hyperthyroidism.1
Choice D: Glucose level. This is incorrect because glucose level is not directly related to thyroid function. However, hyperthyroidism can affect glucose metabolism and cause increased blood sugar levels due to increased breakdown of glycogen and glucose uptake by cells. Therefore, glucose level may be elevated in some cases of hyperthyroidism, but it is not a specific indicator.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A: Ketoacidosis. This is incorrect because ketoacidosis is a complication of hyperglycemia, not hypoglycemia. Ketoacidosis occurs when the body breaks down fat for energy due to insufficient insulin, resulting in the accumulation of ketones and acids in the blood. Ketoacidosis can cause symptoms such as nausea, vomiting, abdominal pain, fruity breath odor, deep and rapid breathing, and altered mental status.
Choice B: Hyperglycemia. This is incorrect because hyperglycemia is a condition of high blood glucose, not low blood glucose. Hyperglycemia can occur due to insufficient insulin, excessive carbohydrate intake, infection, stress, or illness. Hyperglycemia can cause symptoms such as polyuria, polydipsia, polyphagia, blurred vision, fatigue, and headache.
Choice C: Hypoglycemia. This is correct because hypoglycemia is a condition of low blood glucose, which can occur due to excessive insulin, inadequate carbohydrate intake, exercise, alcohol consumption, or medication interactions. Hypoglycemia can cause symptoms such as sweating, tachycardia, palpitations, tremors, hunger, anxiety, confusion, dizziness, weakness, and seizures.
Choice D: Nephropathy. This is incorrect because nephropathy is a complication of chronic hyperglycemia, not acute hypoglycemia. Nephropathy is a kidney disease that results from damage to the small blood vessels and glomeruli in the kidneys due to high blood glucose levels. Nephropathy can cause symptoms such as proteinuria, edema, hypertension, and renal failure.
Correct Answer is A
Explanation
Choice A: Maintain the client in Fowler’s position. This is correct because Fowler’s position, which is a semi-sitting position with the head of the bed elevated 45 to 60 degrees, can facilitate the drainage of gastric contents and reduce the risk of aspiration.
Choice B: Use sterile water to irrigate the nasogastric tube. This is incorrect because sterile water is not necessary to irrigate the nasogastric tube, unless the client is immunocompromised or has a high risk of infection. Tap water or normal saline can be used to irrigate the nasogastric tube, following the provider’s orders or the facility’s protocol.
Choice C: Moisten the client’s lips with lemon-glycerin swabs. This is incorrect because lemon-glycerin swabs can dry out and irritate the client’s lips and oral mucosa, especially if used frequently. The nurse should use water-soluble lubricant or lip balm to moisturize the client’s lips and mouth.
Choice D: Measure abdominal girth daily. This is incorrect because measuring abdominal girth daily is not enough to monitor the progression of the intestinal obstruction and the effectiveness of the gastrointestinal decompression. The nurse should measure abdominal girth more frequently, such as every 4 hr or every shift, and report any changes or abnormalities.

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