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 B
Explanation
The correct answer is choice B. How to operate the portable suction machine. The nurse should include this information in the teaching because suctioning is often needed to keep the tracheostomy tube and opening free from extra mucus and secretions that come from the lungs and tissue around the stoma. Suctioning can help prevent the tube from becoming plugged and improve breathing.
Choice A is wrong because the nondisposable tracheostomy tube does not need to be changed daily. It can be changed every 1 to 3 months, depending on the type of tube.
Choice C is wrong because the tracheostomy dressing should be changed using sterile technique, not clean technique, to prevent infection.
Choice D is wrong because the tracheostomy tube should not be secured with ties at the back of the neck. The ties should be fastened at the front or side of the neck, and they should be snug but not too tight.
Correct Answer is D
Explanation
Choice A reason:
Determine previous coping skills used by the client is not appropriate. Assessing the client's previous coping skills is an essential step in the assessment phase of the therapeutic relationship, not specifically during the orientation phase. This information helps the nurse to understand the client's coping mechanisms and identify potential areas for improvement or support.
Choice B reason:
Facilitate the client's problem-solving skills is not appropriate the nurse may work on facilitating the client's problem-solving skills throughout the therapeutic relationship, including during the working phase. During this phase, the nurse and client collaborate to explore and address the client's concerns and challenges.
Choice Creason:
Assisting the client in expressing alternative behaviours is not appropriate. This action may also be part of the working phase, where the nurse helps the client explore alternative behaviours and coping strategies to address their issues and challenges.
Choice D reason:
The orientation phase is the initial stage of the therapeutic relationship where the nurse and the client get to know each other and establish the groundwork for their working relationship. During this phase, it is essential to clarify the roles and responsibilities of both the nurse and the client to ensure a clear understanding of each other's expectations.
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