A nurse is reviewing the laboratory findings of a client who experienced an acute myocardial infarction 6 days ago. Which of the following laboratory values should the nurse expect to remain elevated at this time?

Troponin T

Creatinine phosphokinase

Myoglobin

Creatinine kinase-MB

Answer and Explanation

The Correct Answer is A

A. Troponin T: Troponin T remains elevated for 10 to 14 days after a myocardial infarction. This protein is highly specific for cardiac muscle injury and is used to confirm myocardial infarction.

B. Creatinine phosphokinase: Creatinine phosphokinase (CPK) typically returns to normal levels within 3 days after a myocardial infarction, so it would no longer be elevated at this point.

C. Myoglobin: Myoglobin rises early after a myocardial infarction but is not specific to heart muscle and returns to normal within 24 hours, so it would not be elevated at this time.

D. Creatinine kinase-MB: Creatinine kinase-MB (CK-MB) usually returns to normal levels within 2 to 3 days after a myocardial infarction, so it is unlikely to still be elevated 6 days later.

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Correct Answer is A

Explanation

A. Obtain a pair of slipper socks for the client. This is an appropriate action. Slipper socks can provide warmth and help improve circulation, promoting comfort.

B. Increase the client's oral fluid intake. While hydration is important for overall health, it will not directly address the cold feet caused by poor circulation in this scenario.

C. Place a moist heating pad under the client's feet. Heating pads, especially moist ones, can increase the risk of burns and should be avoided in clients with vascular occlusions, as they may have decreased sensation.

D. Rub the client's feet briskly for several minutes. Rubbing the feet briskly could cause skin breakdown and injury due to fragile skin and impaired circulation.

A. "It usually takes at least 2 to 3 days for heparin to dissolve a clot." B. "Heparin prevents new cloth from forming rather than dissolving established clots." C. "The time it takes for heparin to dissolve a clot depends on the size of the clot." D. "The time it takes heparin to dissolve clots varies between clients."

Correct Answer is B

Explanation

A. "It usually takes at least 2 to 3 days for heparin to dissolve a clot." Heparin does not dissolve clots; it prevents the formation of new clots and stops existing clots from growing.

B. "Heparin prevents new clots from forming rather than dissolving established clots." Heparin's role is to prevent new clots from forming, not to dissolve existing clots. The body's natural fibrinolytic system will eventually break down the clot.

C. "The time it takes for heparin to dissolve a clot depends on the size of the clot." This is incorrect because heparin does not dissolve clots, regardless of their size.

D. "The time it takes heparin to dissolve clots varies between clients." This is incorrect as well, as heparin does not dissolve clots at all.

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A nurse is reviewing the laboratory findings of a client who experienced an acute myocardial infarction 6 days ago. Which of the following laboratory values should the nurse expect to remain elevated at this time?

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Naxlex Comprehensive Predictor Exams

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Explanation

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