The nurse is caring for a pediatric client with a new onset of hypercalcemia.
What condition would be most likely to cause this altered serum calcium level?

Liver failure.

Radiation injury.

Malignancy.

Hypothyroidism.

Answer and Explanation

The Correct Answer is C

Hypercalcemia is a condition caused by having too much calcium in the blood, which can affect the function of nerves, muscles, kidneys and heart. Hypercalcemia can occur in children due to various causes, both acquired and genetic. One of the most common causes of hypercalcemia in children is cancer, especially cancers that affect the bones or produce substances that mimic parathyroid hormone (PTH), which regulates calcium levels.

Choice A is wrong because liver failure does not directly cause hypercalcemia, although it can affect vitamin D metabolism and calcium absorption.

Choice B is wrong because radiation injury does not cause hypercalcemia, unless it damages the parathyroid glands or causes bone destruction.

Choice D is wrong because hypothyroidism does not cause hypercalcemia, although it can affect bone turnover and calcium excretion.

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Correct Answer is A

Explanation

Glycerin suppositories are safe and effective for infants with constipation. They work by lubricating and softening the stool, and stimulating the rectal muscles to contract.

Choice B is wrong because magnesium hydroxide is not recommended for infants under 6 months of age, and may cause diarrhea, electrolyte imbalance, or magnesium toxicity.

Choice Cis wrong because watchful waiting for 24 hours may not be enough to relieve the infant’s discomfort and may lead to further complications such as fecal impaction or dehydration.

Choice Dis wrong because feeding supplementation with free water may not be sufficient to treat constipation, and may dilute the infant’s intake of nutrients and electrolytes.

A. To suppress the hypothalamus’s production of thyrotropin-releasing hormone (TRH). B. To suppress the anterior pituitary gland’s secretion of thyroid-stimulating hormone (TSH). C. To inhibit production of thyroid hormone in the thyroid gland. D. To destroy part of the thyroid gland.

Correct Answer is C

Explanation

Propylthiouracil (PTU) is an antithyroid drug that blocks the synthesis of thyroid hormones by interfering with the oxidation of iodine and the coupling of iodotyrosines.

Thyroid and Antithyroid Drugs - Katzung & Trevor's Pharmacology Examination and Board Review, 9th Edition

This reduces the levels of triiodothyronine (T) and thyroxine (T) in the blood and relieves the symptoms of hyperthyroidism.

Choice A is wrong because PTU does not destroy any part of the thyroid gland.

It only inhibits the production of thyroid hormones within the gland.

Choice B is wrong because PTU does not suppress the anterior pituitary gland’s secretion of thyroid-stimulating hormone (TSH).

TSH is a hormone that stimulates the thyroid gland to produce thyroid hormones.

PTU does not affect the feedback loop between the hypothalamus, pituitary, and thyroid glands.

Choice D is wrong because PTU does not suppress the hypothalamus’s production of thyrotropin-releasing hormone (TRH).

TRH is a hormone that stimulates the pituitary gland to secrete TSH.

PTU does not affect the feedback loop between the hypothalamus, pituitary, and thyroid glands.

Normal ranges for T are 80 to 220 ng/dL, for T are 4.5 to 11.2 mcg/dL, and for TSH are 0.4 to 4.0 mIU/L.

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The nurse is caring for a pediatric client with a new onset of hypercalcemia. What condition would be most likely to cause this altered serum calcium level?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Correct Answer is C

Explanation

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The nurse is caring for a pediatric client with a new onset of hypercalcemia.
What condition would be most likely to cause this altered serum calcium level?