A nurse is reviewing the laboratory values of a client who had a myocardial infarction 3 hr ago. The nurse should expect which of the following laboratory values to be elevated?
Serum amylase
Unconjugated bilirubin
Aspartate aminotransferase (AST).
Troponin I
The Correct Answer is D
A. Serum amylase: Serum amylase is an enzyme associated with pancreatic function, and its elevation is not specific to myocardial infarction.
B. Unconjugated bilirubin: Elevation of unconjugated bilirubin is associated with liver function and hemolysis, not specifically with myocardial infarction.
C. Aspartate aminotransferase (AST): While AST may be elevated in conditions affecting the heart, it is not as specific or sensitive for myocardial infarction as troponin I.
D. Troponin I: This is the correct answer. Troponin I is a cardiac-specific biomarker released into the bloodstream when there is damage to cardiac muscle, such as during a myocardial infarction. Troponin I levels start to rise within 3-4 hours after the onset of myocardial infarction, making it a crucial marker for early detection.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Wearing loose, non-constricting stockings: This instruction is not recommended for a client with DVT. Compression stockings, which are snug-fitting, may be prescribed to prevent DVT, but loose stockings would not provide the necessary compression.
B. Applying cool compresses to her legs: Cool compresses are not typically recommended for DVT. Warm compresses may be used to improve blood circulation, but cold compresses may not be suitable.
C. Taking an NSAID tablet daily: Nonsteroidal anti-inflammatory drugs (NSAIDs) are not typically recommended for individuals with DVT, especially when on anticoagulant therapy, as they may increase the risk of bleeding.
D. Flexing her knees and feet frequently: This is the correct answer. Encouraging the client to flex her knees and feet frequently helps promote blood circulation and reduces the risk of venous stasis, which can contribute to the formation of blood clots. It is a beneficial measure for clients with DVT.
Correct Answer is B
Explanation
A. Maintaining a semi-Fowler's position as often as possible: While maintaining an elevated position can assist with breathing, it may not directly address the issue of tenacious bronchial secretions. Adequate hydration and other measures are often more effective.
B. Encouraging the client to drink 2 to 3 L of water daily: This is the correct answer. Adequate hydration helps to thin mucus, making it easier to clear from the airways. Drinking 2 to 3 liters of water daily is a helpful strategy to promote hydration and reduce the viscosity of bronchial secretions.
C. Helping the client select a low-salt diet: While a low-salt diet may have cardiovascular benefits, it is not a primary intervention for addressing tenacious bronchial secretions. Hydration and airway clearance techniques are more directly relevant.
D. Administering oxygen via nasal cannula at 2 L/min: While oxygen therapy may be necessary in COPD, it is not the primary intervention for managing tenacious bronchial secretions. Hydration and other measures aimed at thinning mucus are more appropriate.
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