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 D
Explanation
Choice A rationale:
While aspirin is often given to patients with suspected myocardial infarction, asking if the patient took aspirin does not help determine the timing of the onset of symptoms.
Choice B rationale:
Knowing the patient’s allergies is important for medication safety, but it does not help determine eligibility for thrombolytic therapy.
Choice C rationale:
Rating the pain on a scale helps assess the severity of the pain, but it does not provide information about the timing of the onset of symptoms.
Choice D rationale:
The time of pain onset is crucial in determining eligibility for thrombolytic therapy. Thrombolytic therapy is most effective when given within a certain time frame from the onset of symptoms.
So, the correct answer is D, after analyzing all choices.
Correct Answer is B
Explanation
Choice A rationale:
While bilateral crackles at the lung bases indicate fluid accumulation, a common symptom of dilated cardiomyopathy, it’s not as immediately life-threatening as some other conditions.
Choice B rationale:
Acute aortic regurgitation can lead to a rapid and severe drop in blood pressure, which is a medical emergency. Therefore, this patient should be assessed first.
Choice C rationale:
While a murmur and splinter hemorrhages are symptoms of infective endocarditis, they are not as immediately life-threatening as acute aortic regurgitation.
Choice D rationale:
Sharp chest pain with a deep breath could be a symptom of rheumatic fever, but it’s not as immediately life-threatening as acute aortic regurgitation.
So, the correct answer is Choice B, after analyzing all choices.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
