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 B
Explanation
Choice A reason: Wearing closed-toed shoes daily is a good practice for people with diabetes, as it can protect the feet from injuries and infections. However, it is not the most important action for preventing long-term complications of retinopathy and neuropathy. These complications are mainly caused by high blood glucose levels that damage the blood vessels and nerves in the eyes and feet.
Choice B reason: Maintaining stable blood glucose levels is the most important action for preventing long-term complications of retinopathy and neuropathy. High blood glucose levels can cause oxidative stress, inflammation, and endothelial dysfunction, which impair the blood flow and oxygen delivery to the eyes and feet. This can lead to nerve damage (neuropathy) and vision loss (retinopathy) over time. Keeping blood glucose levels within the target range can reduce the risk of these complications and slow down their progression if they already exist.
Choice C reason: Planning to have an eye examination once per year is a recommended action for people with diabetes, as it can help detect and treat retinopathy before it causes irreversible damage to the retina. However, it is not the most important action for preventing long-term complications of retinopathy and neuropathy. Eye examinations cannot prevent retinopathy from occurring or worsening; they can only monitor its status and provide appropriate interventions.
Choice D reason: Examining your feet carefully every day is another recommended action for people with diabetes, as it can help identify and treat any signs of neuropathy, such as numbness, tingling, pain, or ulcers. However, it is not the most important action for preventing long-term complications of retinopathy and neuropathy. Foot examinations cannot prevent neuropathy from occurring or worsening; they can only monitor its status and provide appropriate care.
Correct Answer is B
Explanation
Choice A: Weigh the client weekly. This is incorrect because the client receiving PN should be weighed daily, not weekly, to monitor fluid balance and nutritional status. The nurse should also measure the client’s intake and output, blood glucose, electrolytes, and other laboratory values daily.
Choice B: Reduce the rate of the solution gradually to discontinue. This is correct because the nurse should taper off the PN solution slowly to prevent rebound hypoglycemia, which can occur when the high concentration of glucose in the PN solution is abruptly stopped. The nurse should follow the provider’s orders or the facility’s protocol for reducing and discontinuing PN.
Choice C: Remove solution from refrigerator 2 hr before infusion. This is incorrect because the nurse should remove the PN solution from the refrigerator 30 to 60 minutes before infusion, not 2 hr, to allow it to reach room temperature. Infusing a cold solution can cause discomfort, vasoconstriction, and impaired absorption of nutrients.
Choice D: Shake the solution before hanging if there is a layer of fat present on the top. This is incorrect because the nurse should not shake the PN solution at all, as this can cause fat emulsion droplets to coalesce and form large particles that can clog the filter or cause embolism. The nurse should gently invert or roll the PN solution container to mix it if there is any separation of components.
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