Nursing Elites

1. A client is admitted with a possible myocardial infarction. Which laboratory test result is most indicative of a myocardial infarction?

• A. Serum creatine kinase (CK)
• B. Serum troponin
• C. Serum myoglobin
• D. C-reactive protein (CRP)

Correct answer: B

Rationale: Serum troponin is the most specific and sensitive indicator of myocardial infarction. Troponin levels rise within 3-4 hours after myocardial damage, peak at 10-24 hours, and remain elevated for up to 10-14 days. Creatine kinase (CK) and myoglobin can also be elevated in myocardial infarction, but troponin is more specific to cardiac muscle damage. C-reactive protein (CRP) is a marker of inflammation and is not specific for myocardial infarction.

2. A client with a history of chronic kidney disease is scheduled for a CT scan with contrast. Which laboratory value should the nurse review before the procedure?

• A. Serum potassium
• B. Blood urea nitrogen (BUN)
• C. Serum creatinine
• D. Serum glucose

Correct answer: C

Rationale: Before a CT scan with contrast, the nurse should review the serum creatinine level. This is crucial in assessing kidney function because contrast agents can potentially worsen renal function, leading to contrast-induced nephropathy. Monitoring serum creatinine helps in identifying patients at risk and taking necessary precautions. Serum potassium (Choice A) is important in conditions like hyperkalemia but is not the priority before a contrast CT scan. Blood urea nitrogen (BUN) (Choice B) is another renal function test but is not as specific as serum creatinine for assessing kidney function. Serum glucose (Choice D) is important in monitoring blood sugar levels, especially in diabetic patients, but it is not directly related to the risk of contrast-induced nephropathy in this scenario.

3. A female client is admitted with end-stage pulmonary disease, is alert, oriented, and complaining of shortness of breath. The client tells the nurse that she wants 'no heroic measures' taken if she stops breathing, and she asks the nurse to document this in her medical record. What action should the nurse implement?

• A. Ask the client to discuss 'do not resuscitate' with her healthcare provider
• B. Document the client's wishes in her medical record
• C. Ask the client to sign an advance directive
• D. Place a 'Do Not Resuscitate' (DNR) order in the client's chart

Correct answer: A

Rationale: The correct action for the nurse to implement is to ask the client to discuss 'do not resuscitate' (DNR) wishes with her healthcare provider. This is important to ensure that the client makes informed decisions regarding her care. While documenting the client's wishes in her medical record is essential, it is crucial that the client discusses these wishes with the healthcare provider to understand the implications and have the DNR order legally documented. Asking the client to sign an advance directive is premature without a detailed discussion with the healthcare provider. Placing a 'Do Not Resuscitate' (DNR) order in the client's chart should only be done after the client has discussed and agreed upon this decision with the healthcare provider.

4. An elderly client seems confused and reports the onset of nausea, dysuria, and urgency with incontinence. Which action should the nurse implement?

• A. Auscultate for renal bruits
• B. Obtain a clean catch mid-stream specimen
• C. Use a dipstick to measure for urinary ketones
• D. Begin to strain the client's urine

Correct answer: B

Rationale: This elderly client is presenting symptoms consistent with a urinary tract infection (UTI), such as confusion, nausea, dysuria, urgency, and incontinence. The best course of action for the nurse is to obtain a clean catch mid-stream specimen. This specimen will help identify the causative agent of the UTI, allowing for targeted treatment with an appropriate anti-infective agent. Auscultating for renal bruits (Choice A) is not indicated in this scenario as the client's symptoms point towards a UTI rather than a renal issue. Using a dipstick to measure for urinary ketones (Choice C) is not relevant in the context of UTI symptoms. Beginning to strain the client's urine (Choice D) would not address the need to identify the causative agent for targeted treatment.

5. When planning care for a 10-year-old child with pneumonia receiving oxygen at 5l/min per nasal cannula, what principle of oxygen administration should the nurse consider?

• A. Avoid administration of oxygen at high levels for extended periods.
• B. Increase oxygen flow rate if the child is still tachypneic.
• C. Reduce oxygen levels gradually after symptoms improve.
• D. Humidify the oxygen to prevent drying of mucous membranes.

Correct answer: A

Rationale: The correct principle of oxygen administration to consider is to avoid administering oxygen at high levels for extended periods. High levels of oxygen for prolonged periods can lead to oxygen toxicity, especially in pediatric patients. Increasing the oxygen flow rate based on tachypnea may not be necessary and can potentially lead to oxygen toxicity. Gradually reducing oxygen levels after symptoms improve may compromise the child's oxygenation. While humidifying oxygen is important to prevent drying of mucous membranes, the primary concern in this case is to avoid high oxygen levels for an extended duration to prevent oxygen toxicity.

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