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 B

Explanation

Choice A rationale
Decreased breath sounds in the lower lobes can indicate areas of the lung that are not ventilating well, but this finding alone does not specifically indicate an exacerbation of COPD. It could be due to other conditions such as pleural effusion or atelectasis.
Choice B rationale
Increased respiratory rate and use of accessory muscles are signs of respiratory distress and indicate that the patient is working harder to breathe. These findings are consistent with an exacerbation of COPD, where the airways are more obstructed, and the patient has difficulty maintaining adequate ventilation.
Choice C rationale
Elevated blood pressure and heart rate can occur in many conditions and are not specific indicators of a COPD exacerbation. These vital sign changes can be due to pain, anxiety, or other stressors.
Choice D rationale
Presence of wheezing and cyanosis are also indicators of a COPD exacerbation. Wheezing indicates airway obstruction, and cyanosis indicates hypoxemia, both of which are common during an exacerbation.

A. Meningitis. B. Myocardial infarction. C. Appendicitis. D. Pneumonia.

Correct Answer is A

Explanation

Choice A rationale
A temperature of 38°C (100.4°F) and a stiff neck are classic signs of meningitis, indicating inflammation of the meninges.
Choice B rationale
Myocardial infarction typically presents with chest pain, not a stiff neck.
Choice C rationale
Appendicitis presents with abdominal pain, not a stiff neck.
Choice D rationale
Pneumonia presents with respiratory symptoms, not a stiff neck.

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What is the significance of elevated serum levels of troponin?

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Naxlex Comprehensive Predictor Exams

A nurse is assessing a client with a history of chronic obstructive pulmonary disease (COPD) who presents with increased shortness of breath and a productive cough. Which of the following findings would indicate a potential exacerbation of COPD?

Correct Answer is B

Explanation

A client presents with a temperature of 38°C (100.4°F) and a stiff neck. Which condition should the nurse suspect?

Correct Answer is A

Explanation

Which individual is suffering from the effects of acute coronary syndrome (ACS)?

A client with a history of hypertension is admitted with a severe headache and blurred vision. Which of the following findings would indicate a hypertensive crisis?

A registered nurse (RN) is providing strategies for “better breathing” to a patient with emphysema. Successful teaching of this topic would be identified when the patient states that he will:

A patient has been told that the recent changes in her facial features are due to a hormonal pathology called myxedema. Her nurse’s explanation will be based on understanding that myxedema is:

A nurse has identified a fluid volume deficit in the patient who has suffered prolonged vomiting and diarrhea. Which assessment data is most important in identifying that the patient may be developing prerenal acute kidney injury (AKI)?

A nurse is assessing a client with a temperature of 38.5°C (101.3°F) and a white blood cell count of 15,000/mm³. Which condition is the client most likely experiencing?

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?

A nurse is caring for a client with a temperature of 39°C (102.2°F) who presents with a stiff neck and photophobia. Which condition should the nurse suspect?