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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is B
Explanation
A. Keep the affected knee flexed. Flexing the knee for prolonged periods can impede venous return and increase the risk of thrombosis. The knee should be extended, not flexed.
B. Encourage increased fluid intake. Encouraging fluid intake helps to prevent dehydration, which is a risk factor for blood clot formation. Adequate hydration helps keep the blood less viscous and reduces the risk of DVT.
C. Massage the client's calf on the affected side. Massaging the calf could dislodge a clot if one is present, leading to serious complications such as a pulmonary embolism. This is contraindicated.
D. Promote bed rest for 5-10 days. Early ambulation and movement are key to preventing DVT after surgery. Prolonged bed rest increases the risk of DVT due to venous stasis.
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