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What is the significance of elevated serum levels of troponin?

A.

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

B.

Elevated serum levels of troponin occur because of sustained glycogenolysis.

C.

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

D.

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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View Related questions

Correct Answer is A

Explanation

Choice A rationale

Septic shock is a severe infection leading to systemic inflammation, characterized by high fever (39°C), low blood pressure (90/60 mmHg), and signs of organ dysfunction. It is a medical emergency requiring immediate intervention.

Choice B rationale

Cardiogenic shock is caused by the heart’s inability to pump blood effectively, leading to hypotension and signs of poor perfusion, but not necessarily high fever.

Choice C rationale

Neurogenic shock results from a disruption in the autonomic pathways, leading to hypotension and bradycardia, but not high fever.

Choice D rationale

Anaphylactic shock is a severe allergic reaction causing hypotension, respiratory distress, and other symptoms, but not typically high fever.

Correct Answer is A

Explanation

Choice A rationale

Meningococcal meningitis can present with a high fever (39°C or 102.2°F) and a rash, indicating a severe bacterial infection.

Choice B rationale

Urinary tract infections typically present with urinary symptoms, not a rash.

Choice C rationale

Gastroenteritis presents with gastrointestinal symptoms, not a rash.

Choice D rationale

Osteoarthritis is a degenerative joint disease and does not cause fever or rash.

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