A nurse is caring for a client with a possible acute myocardial infarction (AMI). The electrocardiogram (ECG) shows no ST segment elevations or depression. The nurse is aware that an elevation of which lab result will determine if there has been cardiac injury?

Elevated Troponins

Elevated Creatine kinase (CK)

Elevated Hemoglobin

Elevated B-type Natriuretic

Answer and Explanation

The Correct Answer is A

Rationale:

A. Elevated Troponins indicate myocardial injury or infarction.

B. Elevated Creatine kinase (CK) is an enzyme found in skeletal muscle, brain, and myocardium. Elevated levels can indicate muscle damage.

C. Elevated Hemoglobin is not specific to cardiac injury.

D. Elevated B-type Natriuretic peptide (BNP) is used in the diagnosis and management of heart failure.

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Correct Answer is B

Explanation

Rationale:

A. Alteplase (fibrinolytics) is used to dissolve clots in coronary arteries during an acute myocardial infarction (AMI).

B. IV Nitroglycerine is a vasodilator that dilates coronary blood vessels, increasing blood flow to the myocardium.

C. Metoprolol (beta blockers) are used to decrease heart rate, blood pressure, and myocardial oxygen demand.

D. IV Heparin is used to prevent further clot formation in coronary arteries during an acute myocardial infarction (AMI).

A. "I will call the provider to get a prescription for discontinuing the IV heparin today." B. "Both heparin and warfarin work together to dissolve the clots." C. "The IV heparin increases the effects of the warfarin and decreases the length of your hospital stay." D. "Warfarin takes several days to work, so the IV heparin will be used until the warfarin reaches a therapeutic level."

Correct Answer is D

Explanation

Rationale:

A. Discontinuing heparin abruptly without achieving therapeutic levels of warfarin increases the risk of thrombus formation.

B. Heparin and warfarin have different mechanisms of action, but they both serve to prevent clot formation.

C. Heparin and warfarin do not directly affect each other's therapeutic effects.

D. Warfarin takes time to reach therapeutic levels and become effective, so heparin is continued until warfarin is fully active.

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A nurse is caring for a client with a possible acute myocardial infarction (AMI). The electrocardiogram (ECG) shows no ST segment elevations or depression. The nurse is aware that an elevation of which lab result will determine if there has been cardiac injury?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client with an acute myocardial infarction (AMI). The nurse is preparing medications for the client and recognizes that which medication will dilate the client’s coronary blood vessels?

Correct Answer is B

Explanation

Correct Answer is D

Explanation

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