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

Answer and Explanation

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.

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Correct Answer is ["A","B","C"]

Explanation

Choice A reason: Tachycardia is a common symptom of hypoglycemia, as the body releases adrenaline and other hormones to raise the blood sugar level. This can cause the heart to beat faster and stronger.

Choice B reason: Blurry vision is a common symptom of hypoglycemia, as low blood sugar can aﬀect the ability of the eyes to focus and see clearly. This can also cause headaches, dizziness, or double vision.

Choice C reason: Sweating is a common symptom of hypoglycemia, as the body tries to cool down and cope with the stress of low blood sugar. This can also cause shakiness, trembling, or tingling in the lips, tongue, or cheek.

Choice D reason: Polydipsia (excessive thirst) is not a symptom of hypoglycemia, but a symptom of hyperglycemia (high blood sugar). High blood sugar can cause dehydration and dry mouth, which make the person feel thirsty.

Choice E reason: Polyuria (excessive urination) is not a symptom of hypoglycemia, but a symptom of hyperglycemia (high blood sugar). High blood sugar can cause the kidneys to filter out excess glucose and water from the blood, which make the person urinate more often.

A. Negative Chvostek’s sign B. Flaccid muscles C. Numbness of the hands D. Hypercalcemia

Correct Answer is C

Explanation

Choice A: Negative Chvostek’s sign is the absence of facial twitching when the facial nerve is tapped. This is a normal finding and does not indicate hypoparathyroidism. A positive Chvostek’s sign is a sign of hypocalcemia, which can occur in hypoparathyroidism.

Choice B: Flaccid muscles are weak and limp muscles that lack tone and resistance. This is not a typical finding of hypoparathyroidism, as low levels of parathyroid hormone can cause muscle spasms, cramps, and tetany.

Choice C: Numbness of the hands is a common finding of hypoparathyroidism, as low levels of parathyroid hormone can cause hypocalcemia, which aﬀects the nerve function and sensation. Numbness can also occur in the feet, lips, and tongue.

Choice D: Hypercalcemia is a high level of calcium in the blood. This is not a finding of hypoparathyroidism, as low levels of parathyroid hormone can cause hypocalcemia, which is a low level of calcium in the blood. Hypercalcemia can be a sign of hyperparathyroidism, which is the opposite condition of hypoparathyroidism.

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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?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Explanation

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Explanation

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