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A client came into the emergency room with a possible myocardial infarction. The provider orders a series of blood tests to be drawn, which lab should the nurse anticipate will be drawn?

A.

Brain Natriuretic Peptide (BNP)

B.

Total Lactate Dehydrogenase (LDH)

C.

Troponin

D.

Creatinine

Answer and Explanation

The Correct Answer is C

A. Brain Natriuretic Peptide (BNP) is a marker for heart failure, not the primary diagnostic test for myocardial infarction (MI).  
B. Total Lactate Dehydrogenase (LDH) was historically used but is not specific for MI and has been replaced by troponin testing.  
C. Troponin is correct. Cardiac-specific troponins (Troponin I and Troponin T) are the gold standard for detecting myocardial injury. Elevated levels indicate myocardial damage and are crucial for diagnosing MI.  
D. Creatinine is important for assessing kidney function but is not a marker for myocardial infarction.


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Related Questions

Correct Answer is ["120"]

Explanation

Convert pounds to kilograms:

  • 176 pounds / 2.2 pounds/kg = 80 kg

Calculate the enoxaparin dose:

  • 80 kg 1.5 mg/kg = 120 mg

Round to the nearest whole number:

  • 120 mg

Correct Answer is A

Explanation

A. Metformin is correct. The combination of iodinated contrast dye and metformin increases the risk of contrast-induced nephropathy (CIN) and lactic acidosis, especially in clients with pre-existing kidney dysfunction. Metformin should be held before and after the procedure until renal function is reassessed.
B. Nitroglycerin is used for angina and does not interact with contrast dye.
C. Atorvastatin (a statin) is used for cholesterol management and has no significant interaction with contrast dye.
D. Carvedilol (a beta-blocker) is used for heart failure and hypertension but does not increase the risk of contrast-induced kidney injury.

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