A nurse in an emergency department is caring for a client who reports substernal chest pain and dyspnea. The client is vomiting and is diaphoretic. Which of the following laboratory tests are used to diagnose a myocardial infarction? (Select all that apply.)

Myoglobin

Plasma low-density lipoproteins (LDL)

Troponin T

Troponin I

Answer and Explanation

Correct Answer : A,C,D

A. Myoglobin is an early biomarker for myocardial injury and can be used for initial detection of myocardial infarction. However, it is less specific than troponins.
B. Plasma low-density lipoproteins (LDL) are associated with cardiovascular risk but are not used to diagnose an acute myocardial infarction.
C. Troponin T is a highly specific biomarker for myocardial infarction and is used to confirm the diagnosis of an MI.
D. Troponin I is another highly specific biomarker for myocardial infarction and is used to confirm the diagnosis of an MI.

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Correct Answer is {"dropdown-group-1":"A"}

Explanation

Encephalopathy is correct.
Rational: The client is experiencing alterations in their level of consciousness and has an elevated ammonia level. Encephalopathy is indicative of liver failure due to cirrhosis.

Finding
Ammonia level is correct.
Rational: The client is experiencing encephalopathy which can be a result of an elevated ammonia level. An elevated ammonia level is indicative of liver failure due to cirrhosis.

A. APTT 64 seconds B. Fibrinogen 85 mg/dL C. Platelets 156,000/mm³ D. PT 12 seconds

Correct Answer is B

Explanation

A. APTT of 64 seconds is prolonged but not specific to DIC alone; the normal range is generally around 30-40 seconds, and prolonged APTT can be seen in various conditions.
B. A fibrinogen level of 85 mg/dL is low. In DIC, fibrinogen levels decrease due to increased clotting and subsequent consumption of clotting factors.
C. A platelet count of 156,000/mm³ is within the normal range for most clients (150,000-450,000/mm³), though it might be lower in acute DIC.
D. A PT of 12 seconds is within the normal range for most clients (11-13.5 seconds), so it does not require reporting for DIC.

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A nurse in an emergency department is caring for a client who reports substernal chest pain and dyspnea. The client is vomiting and is diaphoretic. Which of the following laboratory tests are used to diagnose a myocardial infarction? (Select all that apply.)

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is {"dropdown-group-1":"A"}

Explanation

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Correct Answer is B

Explanation

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