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.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
It works by relaxing the smooth muscles of the airways and increasing airflow to the lungs.
However, theophylline has a narrow therapeutic range and can cause side effects such as nausea, vomiting, insomnia, tremors, and cardiac arrhythmias if the blood level is too high.
Caffeine is a stimulant that can increase the effects of theophylline and raise the risk of toxicity.
Therefore, patients taking theophylline should avoid caffeine-containing beverages such as coffee, tea, cola, and energy drinks.
Choice A is wrong because eating foods high in potassium has no effect on theophylline metabolism or action.
Potassium is an electrolyte that is important for nerve and muscle function, but it does not interact with theophylline.
Choice C is wrong because taking the medication on an empty stomach can increase the absorption of theophylline and cause gastric irritation.
Theophylline should be taken with food or milk to reduce stomach upset and prevent fluctuations in blood levels.
Choice D is wrong because limiting fluid intake to 1,000 mL a day can cause dehydration and increase the concentration of theophylline in the blood.
Theophylline
Correct Answer is C
Explanation
The nurse should question the administration of human insulin to this client because they do not need exogenous insulin to maintain normal blood glucose levels. Human insulin is indicated for clients who have type 1 diabetes or type 2 diabetes that cannot be controlled by oral antidiabetic agents, diet, or exercise.
Choice A is wrong because a client who has been diagnosed with gestational diabetes may need human insulin to control their blood glucose levels during pregnancy, as oral antidiabetic agents are contraindicated.
Choice B is wrong because a client with type 2 diabetes, controlled with oral antidiabetic agents, who has a systemic infection may need human insulin to manage their blood glucose levels during periods of stress, as infection can increase blood glucose levels and impair the action of oral antidiabetic agents.
Choice D is wrong because a client who has been living with type 1 diabetes for 20 years needs human insulin to replace the endogenous insulin that their pancreas cannot produce.
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