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 B
Explanation
A. RBC (Red Blood Cells): ITP primarily affects platelet levels, not red blood cells. Therefore, red blood cell counts are not typically decreased in ITP.
B. Platelets: This is the correct answer. ITP is characterized by a low platelet count due to immune-mediated destruction of platelets. A decreased platelet count can lead to an increased risk of bleeding.
C. Granulocytes: While ITP primarily affects platelets, it does not have a direct impact on granulocyte counts. Granulocytes are a type of white blood cell.
D. WBC (White Blood Cells): ITP primarily affects platelets, not white blood cells. Therefore, white blood cell counts are not typically decreased in ITP.
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.
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