Correct Answer: C

Rationale: The correct answer is C. The use of accessory muscles in a client with COPD indicates increased work of breathing and may signal respiratory failure, requiring immediate intervention. This finding suggests that the patient is struggling to breathe effectively. Oxygen saturation of 90% is low but not critically low, while a respiratory rate of 24 breaths per minute is slightly elevated but not as concerning as the increased work of breathing indicated by the use of accessory muscles. Inspiratory crackles may be present in COPD due to underlying conditions like pneumonia but do not require immediate intervention as the use of accessory muscles does.

Correct Answer: A

Rationale: A urine output of less than 30 ml/hour indicates that the kidneys are being affected by the high level of magnesium sulfate. This decreased urine output can lead to magnesium toxicity and impaired kidney function. Blood pressure of 138/88 is within normal limits for pregnancy and does not indicate an immediate concern related to magnesium sulfate. A respiratory rate of 18 breaths/min is normal, and a temperature of 99.8°F is slightly elevated but not a priority in the context of severe preeclampsia and magnesium sulfate administration.

Correct Answer: A

Rationale: In a client with chronic kidney disease (CKD) receiving erythropoietin therapy, the nurse should closely monitor the serum potassium level. Erythropoietin therapy can increase red blood cell production, leading to a higher demand for potassium. Monitoring potassium levels is crucial to prevent hyperkalemia, a potential risk associated with this therapy. Hemoglobin level (Choice B) is important to assess the effectiveness of erythropoietin therapy, but monitoring potassium levels takes precedence due to the risk of hyperkalemia. White blood cell count (Choice C) and serum calcium level (Choice D) are not directly affected by erythropoietin therapy in the context of chronic kidney disease.

Correct Answer: C

Rationale: The correct answer is C. A fever of 100.4°F is most concerning in a client with ESRD scheduled for hemodialysis as it may indicate an underlying infection, which can lead to serious complications in this population. Elevated body temperature can be a sign of sepsis, which requires immediate attention to prevent further deterioration. Reporting this finding promptly allows for timely intervention. Choices A, B, and D are within normal ranges and do not pose an immediate threat to the client's well-being in the context of preparing for hemodialysis.

Correct Answer: D

Rationale: Confusion and altered mental status are concerning in a client with chronic liver disease, as they may indicate hepatic encephalopathy, a serious complication that requires immediate intervention. Enlarged spleen (choice A) can be a common finding in liver disease due to portal hypertension but may not be as acute as hepatic encephalopathy. Increased abdominal girth (choice B) is typically seen in ascites, which is already present in this client. Yellowing of the skin (choice C) is a manifestation of jaundice, also a known symptom in liver disease but not as acute as confusion and altered mental status.