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 A
Explanation
Rationale:
A. "Your family disagrees with your decision?": This open-ended response reflects therapeutic communication by encouraging the client to express her feelings without judgment. It invites further discussion and shows the nurse’s support for the client’s autonomy and emotional well-being.
B. "Did you tell your provider that your family doesn't agree with your decision?": This response shifts focus away from the client's emotional conflict and places it on the provider. It may dismiss the client’s current need for support and hinder further emotional exploration.
C. "You are making the same decision I would make.": Personalizing the conversation undermines client autonomy. The nurse’s role is to support the client’s decision-making process, not impose personal opinions or make assumptions about what is best.
D. "You should get your family to agree with your decision before signing the consent.": This response suggests the client must yield to family opinions, which contradicts the principle of informed consent. The decision is ultimately the client’s, and family agreement is not a legal or ethical requirement.
Correct Answer is {"A":{"answers":"A"},"B":{"answers":"B"},"C":{"answers":"A"},"D":{"answers":"B"},"E":{"answers":"A"}}
Explanation
Rationale:
- Encourage the client to discuss their feelings: Encouraging emotional expression is a key therapeutic approach in managing bulimia nervosa. It allows the client to explore underlying psychological issues, such as anxiety and fear of weight gain, which often contribute to disordered eating behaviors.
- Provide a reduced sodium diet: Sodium restriction is not indicated in this client. In fact, the client has a slightly low sodium level (134 mEq/L), and further restriction could worsen electrolyte imbalances, which are already contributing to cardiac instability.
- Request a prescription for fluoxetine: Fluoxetine, an SSRI, is approved for the treatment of bulimia nervosa and can reduce the frequency of binge-purge episodes. It is also effective in treating coexisting anxiety or depressive symptoms, which are common in this population.
- Request a prescription for bupropion: Bupropion is contraindicated in clients with eating disorders due to its seizure risk. In clients with bulimia, frequent vomiting and low electrolytes increase this risk significantly, making bupropion an inappropriate choice.
- Monitor daily intake and output: Monitoring intake and output helps evaluate hydration status and kidney function, both of which may be compromised due to chronic purging. It also helps track nutritional rehabilitation and prevent complications from electrolyte shifts.
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