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
Increased shortness of breath is a key symptom of worsening congestive heart failure (CHF). It indicates that the heart is not effectively pumping blood, leading to fluid buildup in the lungs and increased respiratory effort.
Choice B rationale
A temperature of 37°C (98.6°F) is within the normal range and does not indicate worsening CHF. Monitoring the patient’s temperature is important, but it is not a sign of CHF exacerbation.
Choice C rationale
A blood pressure of 120/80 mmHg is within the normal range and does not indicate worsening CHF. Blood pressure should be monitored, but this reading does not suggest an acute issue.
Choice D rationale
Occasional dizziness can be a symptom of many conditions, including CHF, but it is not as specific or critical as increased shortness of breath. It should be monitored, but it does not indicate an immediate worsening of CHF.

A. Autonomic neuropathy. B. Diabetic-induced leukocyte depletion. C. Diabetic-induced angiopathy. D. Overdrive of the RAAS (renin-angiotensin-aldosterone system).

Correct Answer is A

Explanation

Choice A rationale
Autonomic neuropathy is a common complication of diabetes and can affect various autonomic functions, including heart rate, blood pressure, and digestion. It is caused by damage to the autonomic nerves due to prolonged high blood sugar levels.
Choice B rationale
Diabetic-induced leukocyte depletion is not a recognized complication of diabetes. Diabetes primarily affects blood vessels and nerves rather than causing leukocyte depletion.
Choice C rationale
Diabetic-induced angiopathy refers to damage to blood vessels caused by diabetes. While it is a recognized complication, autonomic neuropathy is more directly related to diabetic-induced complications.
Choice D rationale
Overdrive of the RAAS (renin-angiotensin-aldosterone system) is not a specific complication of diabetes. While diabetes can affect the RAAS, it is not the most likely condition related to diabetic-induced complications.

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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 congestive heart failure (CHF). Which of the following symptoms would indicate worsening of the condition?

Correct Answer is A

Explanation

Which condition is most likely related to diabetic-induced complications?

Correct Answer is A

Explanation

A nurse is assessing a client with a history of chronic obstructive pulmonary disease (COPD). Which of the following findings is most concerning?

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

A patient presents to his healthcare provider with complaints of severe epigastric pain. His lab work reveals high amylase and lipase levels. His diagnosis is most likely which condition?

A nurse is assessing a client with a temperature of 38°C (100.4°F) and notes a red, swollen area on the client’s leg. Which condition is the client most likely experiencing?

A nurse is assessing a client with chronic obstructive pulmonary disease (COPD). Which of the following findings would indicate the need for immediate intervention?

A nurse is assessing a client with a temperature of 39°C (102.2°F) and a blood pressure of 90/60 mmHg. Which condition is the client most likely experiencing?

A nurse is caring for a client with a history of hypertension who presents with a severe headache and blurred vision. What is the most likely cause of these symptoms?