A client with chronic kidney disease (CKD) is admitted with hyperkalemia. Which laboratory value requires immediate intervention?

A. Serum potassium of 6.5 mEq/L

B. Serum sodium of 135 mEq/L

C. Serum creatinine of 2.0 mg/dL

D. Blood glucose of 150 mg/dL

Correct Answer: A
Rationale: A serum potassium level of 6.5 mEq/L is most concerning in a client with CKD as it indicates severe hyperkalemia, requiring immediate intervention. Hyperkalemia can lead to life-threatening cardiac arrhythmias. Serum sodium levels within the normal range (135 mEq/L) are not immediately concerning. Serum creatinine of 2.0 mg/dL may indicate impaired kidney function but does not require immediate intervention for hyperkalemia. Blood glucose of 150 mg/dL is within normal limits and does not directly correlate with hyperkalemia in this scenario.

In caring for a client who is receiving linezolid IV for nosocomial pneumonia, which assessment finding is most important for the nurse to report to the healthcare provider?

• A. Watery diarrhea
• B. Nausea
• C. Headache
• D. Dizziness

Correct Answer: A
Rationale: The correct answer is A: Watery diarrhea. This finding is the most important to report as it may indicate Clostridioides difficile infection, a severe side effect of antibiotic therapy. Clostridioides difficile infection can lead to serious complications and requires immediate medical attention. Choices B, C, and D are common side effects of linezolid but are not as critical as watery diarrhea in this context.

The nurse weighs a 6-month-old infant during a well-baby check-up and determines that the baby's weight has tripled compared to the birth weight of 7 pounds 8 ounces. The mother asks if the baby is gaining enough weight. What response should the nurse offer?

• A. Your baby is gaining weight right on schedule
• B. What food does your baby usually eat in a normal day?
• C. The baby is below the normal percentile for weight gain
• D. What was the baby's weight at the last well-baby check-up?

Correct Answer: A
Rationale: The correct answer is A: 'Your baby is gaining weight right on schedule.' Tripling of birth weight by 6 months is a normal growth pattern in infants, indicating appropriate weight gain and development. Choice B is unrelated to the question as it focuses on the baby's diet rather than addressing the weight gain concern. Choice C is incorrect as tripling the birth weight is considered a healthy growth pattern, not below normal percentile. Choice D is irrelevant to the mother's question about the adequacy of weight gain.

A client with end-stage renal disease (ESRD) is receiving hemodialysis. Which laboratory value should the nurse monitor closely?

• A. Serum calcium level of 9 mg/dl
• B. Serum potassium level of 4.5 mEq/L
• C. Serum creatinine level of 2.0 mg/dl
• D. Serum sodium level of 138 mEq/L

Correct Answer: C
Rationale: The correct answer is C: Serum creatinine level of 2.0 mg/dl. In a client with ESRD receiving hemodialysis, serum creatinine should be closely monitored. Elevated creatinine levels indicate impaired kidney function. Monitoring serum calcium levels (Choice A), serum potassium levels (Choice B), and serum sodium levels (Choice D) is also important in clients with ESRD, but the most crucial indicator of kidney function in this case is serum creatinine.

The nurse is caring for a client with chronic obstructive pulmonary disease (COPD) who is receiving supplemental oxygen. Which finding indicates the need for immediate intervention?

• A. Use of accessory muscles
• B. Oxygen saturation of 94%
• C. Carbon dioxide level of 45 mmHg
• D. Respiratory rate of 20 breaths per minute

Correct Answer: C
Rationale: A carbon dioxide level of 45 mmHg is concerning in a client with COPD receiving supplemental oxygen, as it may indicate carbon dioxide retention and requires immediate intervention. Options A, B, and D are not the priority findings in this scenario. While the use of accessory muscles, an oxygen saturation of 94%, and a respiratory rate of 20 breaths per minute are important to monitor in a client with COPD, they do not indicate an immediate need for intervention like an elevated carbon dioxide level does.