Nursing Elites

1. The client is being educated by the nurse on home blood glucose monitoring. Which of the following blood glucose measurements indicates hypoglycemia?

• A. 59 mg/dL (3.3 mmol/L)
• B. 75 mg/dL (4.2 mmol/L)
• C. 108 mg/dL (6 mmol/L)
• D. 119 mg/dL (6.6 mmol/L)

Correct answer: A

Rationale: A blood glucose level of 59 mg/dL (3.3 mmol/L) is considered hypoglycemia, which is an abnormally low blood sugar level. This level requires immediate attention as it can lead to symptoms such as confusion, shakiness, and even loss of consciousness if left untreated. Choices B, C, and D have blood glucose levels within the normal range or slightly higher, indicating euglycemia or normal blood sugar levels, and not hypoglycemia.

2. The nurse is caring for a patient who is receiving oral potassium chloride supplements. The nurse notes that the patient has a heart rate of 120 beats per minute and has had a urine output of 200 mL in the past 12 hours. The patient reports abdominal cramping. Which action will the nurse take?

• A. Contact the provider to request an order for serum electrolytes.
• B. Encourage the patient to consume less fluids.
• C. Report symptoms of hyperkalemia to the provider.
• D. Request an order to increase the patient’s potassium dose.

Correct answer: A

Rationale: Oliguria, tachycardia, and abdominal cramping are signs of hyperkalemia, so the nurse should request an order for serum electrolytes to assess the patient's potassium levels. Encouraging the patient to consume less fluids would not address the underlying issue of potential hyperkalemia. Reporting symptoms of hyperkalemia to the provider is not as proactive as directly requesting serum electrolytes. Increasing the patient's potassium dose would worsen hyperkalemia, which is already suspected based on the symptoms presented.

3. A patient’s serum osmolality is 305 mOsm/kg. Which term describes this patient’s body fluid osmolality?

• A. Iso-osmolar
• B. Hypo-osmolar
• C. Hyperosmolar
• D. Isotonic

Correct answer: C

Rationale: The correct term to describe a patient with a serum osmolality of 305 mOsm/kg is 'hyperosmolar.' Normal osmolality ranges from 280 to 300 mOsm/kg. A patient with an osmolality above this range is considered hyperosmolar. Choice A ('Iso-osmolar') implies an equal osmolality, which is not the case in this scenario. Choice B ('Hypo-osmolar') suggests a lower osmolality, which is incorrect based on the provided serum osmolality value. Choice D ('Isotonic') refers to a solution having the same osmolality as another solution, not describing the specific scenario of this patient being above the normal range.

4. A client with chronic obstructive pulmonary disease (COPD) presented with shortness of breath. Oxygen therapy was started at 2 liters/minute via nasal cannula. The arterial blood gases (ABGs) after treatment were pH 7.36, PaO2 62, PaCO2 59, and HCO3. Which statement describes the most likely cause of the simultaneous increase in both the PaO2 and the PaCO2?

• A. The hypercapnia resulted from the rapid respirations.
• B. The hypoxic drive was reduced by the oxygen therapy.
• C. The client had a pneumothorax which restricted ventilation.
• D. The client had a pulmonary embolism that reduced perfusion.

Correct answer: B

Rationale: In patients with COPD, oxygen therapy can reduce the hypoxic drive, which is the primary stimulus for breathing in these individuals. By providing supplemental oxygen, the hypoxic drive is diminished, resulting in decreased respiratory effort. As a consequence, the PaO2 may increase due to the supplemental oxygen, but this can lead to a decrease in the respiratory drive and subsequent retention of carbon dioxide, causing an increase in PaCO2 levels. Option A is incorrect because rapid respirations would typically lower PaCO2 levels. Option C is incorrect as a pneumothorax would lead to impaired gas exchange and decreased PaO2 levels without necessarily affecting PaCO2 levels. Option D is incorrect as a pulmonary embolism would typically result in ventilation-perfusion mismatch and decreased PaO2 levels without directly impacting PaCO2 levels.

5. The nurse is preparing to administer an antibiotic to a patient who has been receiving the antibiotic for 2 days after a culture was obtained. The nurse notes increased erythema and swelling, and the patient has a persistent high fever of 39°C. What is the nurse’s next action?

• A. Administer the antibiotic as ordered.
• B. Contact the provider to request another culture.
• C. Discuss the need to add a second antibiotic with the provider.
• D. Review the sensitivity results from the patient’s culture.

Correct answer: D

Rationale: In this scenario, the nurse is observing signs of a possible lack of response to the current antibiotic therapy, such as increased erythema, swelling, and persistent high fever. The next appropriate action for the nurse is to review the sensitivity results from the patient’s culture. This step is crucial to determine if the current antibiotic is effective against the causative organism. If the sensitivity results indicate resistance to the current antibiotic, the antibiotic should be discontinued, and the provider should be notified for a change in therapy. Contacting the provider to request another culture is not the immediate priority, as the existing culture results need to be reviewed first. Adding a second antibiotic should only be considered after confirming the sensitivity results, as unnecessary antibiotic use can lead to antimicrobial resistance.

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