Nursing Elites

1. The nurse is caring for a client who is postoperative following a thyroidectomy. Which laboratory value should be monitored closely?

• A. Serum calcium of 8.5 mg/dL
• B. Serum sodium of 136 mEq/L
• C. Serum potassium of 3.0 mEq/L
• D. Serum chloride of 102 mEq/L

Correct answer: C

Rationale: A serum potassium level of 3.0 mEq/L should be monitored closely in a client who is postoperative following a thyroidectomy to detect any electrolyte imbalances. After a thyroidectomy, there is a risk of hypokalemia due to the effects of anesthesia, stress response, and the surgical procedure itself. Monitoring serum potassium levels is crucial as hypokalemia can lead to cardiac arrhythmias and muscle weakness. Serum calcium, sodium, and chloride levels are important but not the primary focus following a thyroidectomy, making them incorrect choices.

2. A 7-year-old boy is brought to the clinic because of facial edema. He reports that he has been voiding small amounts of dark, cloudy, tea-colored urine. The parents state that their son had a sore throat 2 weeks earlier, but it has resolved. After assessing the child's vital signs and weight, what intervention should the nurse implement next?

• A. Perform an otoscopic examination
• B. Measure the child's abdominal girth
• C. Collect a urine specimen for routine urinalysis
• D. Obtain a blood specimen for serum electrolytes

Correct answer: C

Rationale: Collecting a urine specimen for routine urinalysis is the next appropriate intervention. The symptoms described, including facial edema and tea-colored urine, are indicative of glomerulonephritis, a condition affecting the kidneys. A urine specimen can help assess renal function and the presence of blood and protein in the urine, which are common in glomerulonephritis. Performing an otoscopic examination (Choice A) is not relevant to the presenting symptoms. Measuring the child's abdominal girth (Choice B) is not necessary at this point as it does not directly address the urinary symptoms. Obtaining a blood specimen for serum electrolytes (Choice D) may provide information about electrolyte imbalances but is not the most appropriate initial step in this case.

3. A client with pneumonia has arterial blood gases levels at: pH 7.33; PaCO2 49 mm/Hg; HCO3 25 mEq/L; PaO2 95. What intervention should the nurse implement based on these results?

• A. Institute coughing and deep breathing protocols.
• B. Administer oxygen via nasal cannula.
• C. Prepare for intubation and mechanical ventilation.
• D. Increase IV fluids to improve hydration.

Correct answer: A

Rationale: The ABG results indicate respiratory acidosis due to an elevated PaCO2 (49 mm/Hg), indicating hypoventilation. The appropriate intervention for respiratory acidosis is to improve ventilation. Coughing and deep breathing protocols can help the client to effectively ventilate and improve gas exchange. Administering oxygen via nasal cannula (Choice B) may be necessary in respiratory distress situations, but addressing the underlying cause of hypoventilation is crucial. Intubation and mechanical ventilation (Choice C) are not the first-line interventions for uncomplicated respiratory acidosis. Increasing IV fluids (Choice D) does not directly address the respiratory acidosis present in this scenario.

4. A client with liver cirrhosis and ascites is admitted with jaundice. Which laboratory value is most concerning to the nurse?

• A. Serum albumin of 3.0 g/dl
• B. Bilirubin of 3.0 mg/dl
• C. Ammonia level of 80 mcg/dl
• D. Prothrombin time of 18 seconds

Correct answer: C

Rationale: An ammonia level of 80 mcg/dl is elevated and concerning in a client with liver cirrhosis, as it may indicate hepatic encephalopathy. Elevated ammonia levels can lead to neurological symptoms such as confusion, altered mental status, and even coma. Serum albumin, bilirubin, and prothrombin time are important in liver cirrhosis but are not the most concerning for acute neurological deterioration associated with hepatic encephalopathy.

5. 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.

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