A patient who has had 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?.
Cardiac-specific troponin.
Myoglobin.
Homocysteine.
C-reactive protein.
The Correct Answer is A
Choice A rationale:
Cardiac-specific troponin is a protein that is released into the bloodstream when there is damage to the heart muscle, such as during an acute myocardial infarction (AMI). It is considered the most specific marker for AMI because it is found only in heart muscle. The normal range for troponin I is between 0 and 0.04 ng/mL2.
Choice B rationale:
Myoglobin is a protein found in heart and skeletal muscles. While it can be elevated in AMI, it is not as specific as troponin because it is also found in skeletal muscles. The normal levels of myoglobin are 25 to 72 ng/mL4.
Choice C rationale:
Homocysteine is an amino acid in the blood, and high levels can increase the risk of heart disease. However, it is not specific for AMI5. The normal range of homocysteine levels are less than 15 micromoles per liter.
Choice D rationale:
C-reactive protein (CRP) is a marker of inflammation in the body and can be elevated in various conditions, including heart disease. However, it is not specific for AMI6. The normal CRP level is less than 0.9 milligrams per deciliter.
So, the correct answer is A, after analyzing all choices.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Limiting salt and fluid intake is crucial for patients with restrictive cardiomyopathy to manage their condition.
Choice B rationale:
Avoiding aspirin or other anti-inflammatory drugs is not specifically related to the management of restrictive cardiomyopathy.
Choice C rationale:
Taking antibiotics before dental cleaning is a general recommendation for patients with certain heart conditions to prevent endocarditis, but it’s not specific to restrictive cardiomyopathy.
Choice D rationale:
Restarting an exercise program should be done under medical supervision and depends on the patient’s overall health status.
So, the correct answer is A, after analyzing all choices.
Correct Answer is ["A","B","C"]
Explanation
Choice A rationale:
Obtaining blood cultures x 3 is anticipated for the client. This is because the adolescent’s symptoms such as fever, shortness of breath, and petechiae could indicate a bacterial infection, possibly endocarditis, which is a risk for individuals with a history of rheumatic fever and cardiac valve damage. Blood cultures would help identify the causative bacteria.
Choice B rationale:
Administering antibiotic therapy is anticipated for the client. The adolescent’s symptoms suggest a possible bacterial infection, which could have been introduced during the recent dental work. Antibiotics would help eliminate the bacteria and prevent further complications.
Choice C rationale:
Obtaining an echocardiogram is anticipated for the client. Given the adolescent’s history of rheumatic fever and cardiac valve damage, and current symptoms like shortness of breath and chest pain, an echocardiogram would help assess the condition of the heart valves and detect any abnormalities.
Choice D rationale:
Restricting dental hygiene is contraindicated for the client. Good oral hygiene is important, especially for individuals with a history of rheumatic fever and cardiac valve damage, as it helps prevent oral infections that could potentially spread to the heart.
Choice E rationale:
Performing a strenuous exercise regimen twice daily is contraindicated for the client. The adolescent is currently experiencing symptoms like shortness of breath and chest pain, which could be exacerbated by strenuous exercise. It’s important to avoid overexertion until the adolescent’s condition stabilizes.
So, the correct answer is, after analyzing all choices, Choices A, B, and C are anticipated for the client, while Choices D and E are contraindicated. .
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