A nurse is caring for a patient who has a suspected myocardial infarction. Which of the following should the nurse administer first?

Nitroglycerin

Aspirin

Morphine

Oxygen

Answer and Explanation

The Correct Answer is D

A. Nitroglycerin: Nitroglycerin is used to relieve chest pain by dilating coronary arteries and increasing blood flow. However, in the immediate setting of a suspected MI, oxygen is prioritized to ensure adequate oxygenation.

B. Aspirin: Aspirin is essential in the early treatment of MI to prevent further clot formation by inhibiting platelet aggregation, but oxygen would still come first if the client’s oxygenation is compromised.

C. Morphine: Morphine is used for pain relief and to reduce anxiety and oxygen demand on the heart. However, it is administered after ensuring oxygen supply.

D. Oxygen: Oxygen should be administered first in a suspected myocardial infarction to ensure the heart and tissues receive adequate oxygen, especially if the patient is hypoxic.

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Correct Answer is A

Explanation

A. Troponin T: Troponin T remains elevated for 10 to 14 days after a myocardial infarction. This protein is highly specific for cardiac muscle injury and is used to confirm myocardial infarction.

B. Creatinine phosphokinase: Creatinine phosphokinase (CPK) typically returns to normal levels within 3 days after a myocardial infarction, so it would no longer be elevated at this point.

C. Myoglobin: Myoglobin rises early after a myocardial infarction but is not specific to heart muscle and returns to normal within 24 hours, so it would not be elevated at this time.

D. Creatinine kinase-MB: Creatinine kinase-MB (CK-MB) usually returns to normal levels within 2 to 3 days after a myocardial infarction, so it is unlikely to still be elevated 6 days later.

A. Cool skin B. Numbness C. Edema D. Pallor

Correct Answer is C

Explanation

A. Cool skin: Cool skin is not typically associated with thrombophlebitis. It is more common with arterial issues rather than venous problems.

B. Numbness: Numbness is generally a sign of nerve involvement or arterial occlusion, not a classic finding of thrombophlebitis, which primarily affects veins.

C. Edema: Edema is a common finding with thrombophlebitis due to venous inflammation and obstruction of blood flow, which leads to fluid accumulation in the affected limb.

D. Pallor: Pallor is more commonly associated with arterial insufficiency rather than venous issues like thrombophlebitis. Thrombophlebitis often presents with redness and warmth instead of pallor.

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A nurse is caring for a patient who has a suspected myocardial infarction. Which of the following should the nurse administer first?

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