A nurse working in an emergency department is assessing a client who is experiencing chest pain that began 6 hr ago. Which of the following findings indicates that the client is having a myocardial Infarction?
Decreased creatine kinase-MB
Decrease in respiratory rate
ST segment depression
Increased troponin I
The Correct Answer is D
Rationale:
A. Decreased creatine kinase-MB: CK-MB is a cardiac enzyme that rises within 4–6 hours of myocardial infarction and peaks around 24 hours. A decrease in CK-MB would not indicate acute myocardial injury and is not a diagnostic marker in this case.
B. Decrease in respiratory rate: A lower respiratory rate is not a typical or reliable indicator of myocardial infarction. Clients experiencing an MI are more likely to show signs of dyspnea, anxiety, or increased respiratory effort due to pain or decreased oxygenation.
C. ST segment depression: ST segment depression may indicate myocardial ischemia or a non-ST elevation myocardial infarction (NSTEMI), but it is less specific than biomarkers like troponin. It may also appear in other conditions such as angina or electrolyte imbalances.
D. Increased troponin I: Troponin I is a highly specific and sensitive cardiac biomarker that rises within 3–6 hours of myocardial injury. An elevated troponin I level 6 hours after the onset of chest pain strongly supports the diagnosis of myocardial infarction.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Rationale:
A. Autonomy: Autonomy involves respecting a client’s right to make their own healthcare decisions. While important, this scenario concerns unequal treatment rather than limiting the clients’ decision-making rights.
B. Justice: Justice refers to fairness and equity in the distribution of healthcare resources. Providing supplies to one client based on insurance status while denying them to another reflects unequal and unethical treatment, violating the principle of justice.
C. Beneficence: Beneficence means acting in the best interest of the client by promoting well-being. Although the insured client is benefitting, failing to support the uninsured client equally undermines the overall intent to do good for all clients.
D. Nonmaleficence: Nonmaleficence is the obligation to do no harm. While denying supplies could lead to harm, the primary ethical breach in this situation lies in the unfair distribution of care, which relates more directly to justice.
Correct Answer is D
Explanation
Rationale:
A. "You are feeling anxious now; why don't you give it some time before making a final decision?": This minimizes the client’s current emotional distress and does not address the seriousness of the statement. It may come across as dismissive rather than therapeutic.
B. "You should talk with your family members before making this decision.": Although involving family in major decisions can be helpful, the focus should be on the client's feelings and wishes first.
C. "I will discuss this with your primary health care provider, and we can discuss this more tomorrow.": Deferring the conversation may delay support for someone expressing emotional exhaustion and possible suicidal ideation. Prompt intervention is essential in these situations.
D. "Let me refer you to talk to someone regarding your treatment options.": This response acknowledges the client's emotional state while also offering a supportive and appropriate next step. It opens access to counseling or mental health services and helps the client explore options without judgment.
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