A nurse is providing care for a client who experienced a myocardial infarction prior to a cardiac arrest. Which of the following laboratory tests will identify early injury to the cardiac muscle?
Creatine kinase (CK) test
Creatine kinase-myocardial band (CK-MB) test
Brain natriuretic peptide (BNP) test
Troponin T test
The Correct Answer is D
Answer: D. Troponin T test
Rationale:
A. Creatine kinase (CK) test: While creatine kinase isoenzymes, including CK-MB, can be elevated following myocardial infarction (MI), they are not specific to cardiac muscle injury. CK is found in various tissues throughout the body, so elevated levels can also indicate damage to skeletal muscle or brain tissue, among other sources.
B. Creatine kinase-myocardial band (CK-MB) test: CK-MB is a cardiac-specific isoform of creatine kinase, and elevated levels can indicate myocardial injury, particularly in the context of an acute MI. However, troponin T is a more sensitive and specific marker for myocardial injury.
C. Brain natriuretic peptide (BNP) test: Brain natriuretic peptide is primarily used in the diagnosis and management of heart failure. While elevated BNP levels can indicate heart muscle strain or stress, they are not specific markers for acute myocardial infarction or early injury to the cardiac muscle.
D. Troponin T test: This is the correct answer. Troponin T is a highly specific marker for cardiac muscle injury. Elevated troponin levels can be detected within hours of myocardial infarction and persist for several days, making it an essential tool in the diagnosis of acute coronary syndromes, including myocardial infarction. Troponin T is considered one of the gold standard biomarkers for detecting early injury to the cardiac muscle.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The correct answer is choice C. Holding the client’s eyes shut for a few seconds.
This is because the eyes of a deceased client do not close naturally and may remain open after death. Holding them shut for a few seconds helps to keep them closed and prevent drying of the corneas.
This also gives a more peaceful appearance to the client’s body for the family visit.
Choice A is wrong because crossing the client’s arms across their chest is not a standard postmortem care procedure. It may also interfere with the placement of identification tags on the wrists.
Choice B is wrong because placing the client in a high-Fowler’s position is not necessary or appropriate for postmortem care. The client should be placed in a supine position with the head of the bed elevated to prevent livor mortis (purple discoloration of the skin) on the face.
Choice D is wrong because removing the client’s dentures from their mouth is not recommended for postmortem care. The dentures should be left in place to maintain the shape of the face and prevent the jaw from dropping.
Normal ranges are not applicable for this question as it does not involve any physiological measurements.
Correct Answer is ["B","C","D"]
Explanation
The correct answer is choice B, C, and D. The nurse should give the client one simple direction at a time, reinforce orientation to time, place, and person, and establish eye contact when communicating with the client.
These interventions can help the client with dementia to understand and follow instructions, reduce confusion and anxiety, and enhance communication.
Choice A is wrong because allowing the client to choose among a variety of activities each day can overwhelm and frustrate the client with dementia.
The nurse should provide a structured and consistent daily routine for the client.
Choice E is wrong because refuting the client’s delusions using logic can increase the client’s agitation and distrust.
The nurse should use validation therapy to acknowledge the client’s feelings and emotions without arguing or correcting the client.
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