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
Choice A reason
Act as a spokesperson to provide information to the media in inappropriate. During a disaster, the nurse manager or designated hospital spokesperson usually handles communication with the media. The unit nurse's primary focus is on patient care and ensuring the safety and well-being of the clients on their unit.
Choice B reason
Recommending to the provider a list of clients for early discharge is the action that should be taken by the nurse. During a disaster, the responsibility of the unit nurse includes recommending to the healthcare provider a list of clients who may be considered for early discharge. This decision is based on the nurse's assessment of the clients' conditions and the need to create additional capacity for incoming patients who require urgent medical attention.
Choice C reason:
Determining the need for additional providers is inappropriate. The determination of the need for additional providers during a disaster is usually made at a higher level, such as by the nursing supervisor, nurse manager, or hospital administration. The unit nurse may collaborate with the nursing leadership to assess staffing needs and provide input, but the final decision is typically made at a higher level.
Choice D reason
Deciding which clients should be transported for a higher level of care is not the responsibility of the nurse. Decisions about transferring clients for a higher level of care during a disaster are usually made collaboratively among the healthcare team, including the healthcare providers and nursing leadership. The unit nurse may provide valuable input about the clients' conditions, but the decision is not solely the responsibility of the unit nurse.
Correct Answer is B
Explanation
Choice A reason
Administering naloxone to the newborn is not appropriate. Naloxone is an opioid antagonist used to reverse the effects of opioid overdose in adults. It is not typically used for newborns with neonatal abstinence syndrome. The management of NAS is primarily supportive, and medications may be prescribed to help manage specific withdrawal symptoms, but naloxone is not a standard treatment for NAS.
Choice B reason:
Minimizing noise in the newborn's environment is a crucial action in the plan of care is the correct action to be included. Newborns experiencing NAS can be easily overstimulated, and loud noises can exacerbate their withdrawal symptoms and distress. Creating a calm and quiet environment helps reduce agitation and promotes better sleep and overall comfort.
Choice C reason
Swaddling the newborn with his leg extended is not appropriate in this case. Swaddling can be beneficial for some newborns, but the specific positioning and swaddling techniques should be individualized based on the newborn's needs and preferences. Extending the newborn's legs may not necessarily be the best approach, as it may not provide comfort or address the symptoms associated with NAS.
Choice D reason:
Maintaining eye contact with the newborn during feedings is not appropriate in this case. While maintaining eye contact during feedings is an essential aspect of bonding and promoting parent-newborn attachment, it may not be the primary focus in managing neonatal abstinence syndrome. The plan of care for a newborn with NAS would primarily involve managing withdrawal symptoms, providing comfort measures, and addressing the newborn's unique needs during this challenging period.
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