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
The absence of burning epigastric pain after eating indicates that the treatment for peptic ulcer disease (PUD) secondary to H. pylori has been effective. This suggests that the ulcer has healed and the inflammation has subsided.
Choice B rationale
Coffee-ground emesis indicates the presence of blood in the vomit, which suggests ongoing bleeding and is not a sign of effective treatment for PUD.
Choice C rationale
A decrease in alcohol intake is beneficial for overall health but does not directly indicate the effectiveness of treatment for PUD secondary to H. pylori.
Choice D rationale
Normalization of hemoglobin levels is important but does not specifically indicate the effectiveness of treatment for PUD secondary to H. pylori. The primary indicator would be the resolution of symptoms such as burning epigastric pain.

A. Increased thirst. B. Increased appetite. C. Slurred speech. D. Polyuria.

Correct Answer is C

Explanation

Choice A rationale
Increased thirst is a symptom of hyperglycemia, not hypoglycemia. It occurs when high blood sugar levels cause dehydration.
Choice B rationale
Increased appetite can occur in hypoglycemia but is not as specific as other symptoms like slurred speech.
Choice C rationale
Slurred speech is a common symptom of hypoglycemia, indicating that the brain is not receiving enough glucose to function properly.
Choice D rationale
Polyuria is a symptom of hyperglycemia, where excess glucose in the blood leads to increased urine production.

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What is the significance of elevated serum levels of troponin?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which assessment data would indicate to the nurse that pharmacologic treatment with antibiotics and antacids has been effective for the patient diagnosed with peptic ulcer disease (PUD) secondary to H. pylori?

Correct Answer is A

Explanation

A registered nurse (RN) would expect to find which sign and symptom (S&S) in the patient whose blood glucose level is 43 mg/dL?

Correct Answer is C

Explanation

A patient with cerebral ischemia has signs and symptoms of right homonymous hemianopia and inability to move the right arm. This is indicative of increased intracranial pressure that is most probably due to a lesion in the:

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A nurse caring for a patient with unstable angina will most likely need to give medications to accomplish which desirable objective?

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A client with heart failure is experiencing shortness of breath and swelling in the lower extremities. Which of the following interventions should the nurse implement first?

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