What is the significance of elevated serum levels of troponin?

This intracellular substance can leak into the blood with cardiac cellular injury or death.

Elevated serum levels of troponin occur because of sustained glycogenolysis.

This substance is elevated when a patient has acute tubular necrosis.

Serum elevation of this acute phase reactant occurs because of tissue injury.

Answer and Explanation

The Correct Answer is A

Choice A rationale
Elevated serum levels of troponin indicate cardiac cellular injury or death. Troponin is a protein released into the bloodstream when heart muscle cells are damaged, such as during a myocardial infarction.
Choice B rationale
Sustained glycogenolysis does not cause elevated troponin levels. Glycogenolysis is the breakdown of glycogen to glucose, primarily occurring in the liver and muscles, not related to troponin release.
Choice C rationale
Acute tubular necrosis does not elevate troponin levels. This condition affects the renal tubules and is typically indicated by elevated creatinine and BUN levels.
Choice D rationale
Troponin is not an acute phase reactant. Acute phase reactants are proteins whose levels change in response to inflammation, such as C-reactive protein (CRP), not troponin.

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Correct Answer is A

Explanation

Choice A rationale
Administering antipyretic medication as prescribed is a priority intervention for a client with a body temperature of 38°C (100.4°F). Antipyretics help reduce fever and provide comfort to the patient. They work by inhibiting the production of prostaglandins, which are involved in the fever response.
Choice B rationale
Encouraging fluid intake to prevent dehydration is also important, but it is not the priority intervention. Adequate hydration helps maintain fluid balance and supports the body’s ability to regulate temperature.
Choice C rationale
Monitoring vital signs every 4 hours is essential for assessing the patient’s condition, but it is not an intervention that directly addresses the fever. It helps track the patient’s response to treatment and detect any changes in their condition.
Choice D rationale
Applying a cooling blanket to reduce fever can be effective, but it is typically used when antipyretic medications are not sufficient or contraindicated. Cooling measures help lower body temperature through conduction and evaporation.

A. Hypocortisolism. B. Hyperinsulinemia. C. Iodide deficiency. D. Azotemia.

Correct Answer is C

Explanation

Choice A rationale
Hypocortisolism, also known as Addison’s disease, is characterized by insufficient production of cortisol by the adrenal glands. It does not typically cause goiter, which is an enlargement of the thyroid gland due to various causes such as iodine deficiency, autoimmune diseases, or nodules.
Choice B rationale
Hyperinsulinemia refers to an excess level of insulin in the blood, often associated with insulin resistance and type 2 diabetes. It is not related to the development of goiter.
Choice C rationale
Iodide deficiency is a common cause of goiter. The thyroid gland requires iodine to produce thyroid hormones. When there is a deficiency, the gland enlarges in an attempt to capture more iodine from the bloodstream.
Choice D rationale
Azotemia is an elevation of blood urea nitrogen (BUN) and serum creatinine levels, typically due to kidney dysfunction. It is not associated with the development of goiter.

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What is the significance of elevated serum levels of troponin?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client with a body temperature of 38°C (100.4°F). Which of the following interventions should the nurse prioritize?

Correct Answer is A

Explanation

A goiter is often associated with:

Correct Answer is C

Explanation

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