A nurse is assisting with the care of a client who has acute kidney injury. Which of the following findings require immediate follow-up by the nurse. (Select all that apply.)

A. Activity level: The client is lethargic, which can indicate worsening uremia, electrolyte imbalance, or decreased renal perfusion. Changes in mental status require immediate assessment to prevent complications such as encephalopathy. B. Blood pressure: The client’s blood pressure is elevated at 142/92 mm Hg. Hypertension is common in acute kidney injury and can further impair renal function or increase the risk of cardiovascular complications, requiring prompt monitoring and management. C. BUN: The BUN is 40 mg/dL, which is significantly above the normal range. Elevated BUN indicates azotemia and accumulation of nitrogenous waste products, reflecting impaired kidney function and necessitating immediate follow-up. D. Blood glucose: The glucose level is 98 mg/dL, which is within the expected reference range. It does not require immediate intervention in this context. E. Urinary output: The client’s urinary output is 26 mL/hr, which is below the normal threshold of 30 mL/hr. Oliguria indicates declining renal function and requires prompt evaluation and intervention. F. Blood creatinine level: The creatinine is 4 mg/dL, markedly above normal, reflecting significant kidney injury. Elevated creatinine correlates with impaired glomerular filtration and requires immediate follow-up to guide treatment.