A patient who has been experiencing chest pain for several hours is admitted with a diagnosis of rule out acute myocardial infarction (AMI). Which laboratory test is most specific for the nurse to monitor in determining whether the patient has had an AMI?

Homocysteine.

C-reactive protein.

Myoglobin.

Cardiac-specific troponin.

Answer and Explanation

The Correct Answer is D

Choice A rationale
Homocysteine is an amino acid that your body uses to make protein and to build and maintain tissue. But too much homocysteine in your blood might increase your risk of heart disease.
However, it is not the most specific marker for AMI.
Choice B rationale
C-reactive protein (CRP) is produced by the liver and its level rises when there is inflammation in your body. While its level can increase in those with a heart attack, it is not the most specific marker for AMI6.
Choice C rationale
Myoglobin is a small protein that stores oxygen. It is measured occasionally. Myoglobin is sometimes measured in addition to troponin to help diagnose a heart attack. However, it is not as specific as cardiac-specific troponin.
Choice D rationale
Cardiac-specific troponin is a cardio-specific, highly sensitive marker for myocardial damage. The absolute cardiospecificity of cTnI allows the diagnosis of myocardial infarction distinct from muscle lesions and non-cardiac surgery.

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Correct Answer is D

Explanation

Choice A rationale
Venous thrombosis is a condition in which a blood clot forms in a vein, typically in the leg. While this condition can cause discomfort and changes in the appearance of the leg, it would not typically cause the leg to become cold and pale or result in the loss of a pulse.
Choice B rationale
Paresthesia refers to abnormal sensations in the body, such as tingling, numbness, or burning. While this condition could potentially cause discomfort, it would not typically cause the leg to become cold and pale or result in the loss of a pulse.
Choice C rationale
Vascular spasm is a sudden, brief tightening of the muscles inside the walls of a blood vessel. While this could potentially cause discomfort and changes in the appearance of the leg, it would not typically cause the leg to become cold and pale or result in the loss of a pulse.
Choice D rationale
Arterial occlusion is the correct answer. This condition involves a blockage in an artery, which can significantly reduce blood flow to the affected area. This could cause the leg to become cold and pale and result in the loss of a pulse.

A. A 39-year-old patient who has right calf tenderness and swelling after a plane ride B. A 58-year-old patient taking anticoagulants for atrial fibrillation who has black stools C. A 67-year-old patient who has a gangrenous foot ulcer with a weak pedal pulse D. A 50-year-old patient who is reporting sudden sharp and severe upper back pain .

Correct Answer is D

Explanation

Choice A rationale
While calf tenderness and swelling after a plane ride could potentially indicate a deep vein thrombosis, this condition is not immediately life-threatening in most cases. The patient would need evaluation and treatment, but other patients might have more urgent needs14.
Choice B rationale
A patient taking anticoagulants for atrial fibrillation who has black stools could potentially have gastrointestinal bleeding, which would need evaluation. However, this condition might not be immediately life-threatening, and other patients might have more urgent needs14.
Choice C rationale
A patient with a gangrenous foot ulcer and a weak pedal pulse would need evaluation and treatment. However, this condition might not be immediately life-threatening, and other patients might have more urgent needs14.
Choice D rationale
A patient reporting sudden sharp and severe upper back pain could potentially have an aortic dissection, which is a life-threatening condition that requires immediate evaluation and treatment. Therefore, this patient should be assessed first14.

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A patient who has been experiencing chest pain for several hours is admitted with a diagnosis of rule out acute myocardial infarction (AMI). Which laboratory test is most specific for the nurse to monitor in determining whether the patient has had an AMI?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

An obese post-surgical patient reports sudden discomfort in her leg. Upon assessment, the nurse finds the leg to be cold and pale, with no pedal or popliteal pulse. What should the nurse suspect?

Correct Answer is D

Explanation

After receiving a change-of-shift report, which patient admitted to the emergency department should the nurse assess first?

Correct Answer is D

Explanation

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When assessing a male patient in the telemetry unit who is experiencing persistent, crushing chest pain, which symptoms would lead the nurse to suspect a myocardial infarction?