A nurse is caring for a client in the emergency department. The nurse is caring for the client in the ED. The nurse understands that the client is at risk of developing which of the following complications? Select all that apply.

A. Respiratory alkalosis: The client’s arterial pH is 7.30, indicating acidemia rather than alkalemia. Respiratory alkalosis is not expected in hyperglycemic crises; instead, metabolic acidosis may develop due to ketone accumulation and dehydration. B. Hypotension: The client’s blood pressure is 96/65 mm Hg, which is lower than normal, likely related to dehydration from osmotic diuresis caused by severe hyperglycemia. Ongoing fluid loss increases the risk of hypotension, making it an important complication to monitor and manage promptly. C. Septic shock: While the client has a recent history of bronchitis and pneumonia, there is no current evidence of infection such as fever, tachypnea, or elevated WBCs. Although infection could precipitate hyperglycemia, septic shock is not an immediate complication indicated by the current findings. D. Cardiac arrhythmias: The client has a potassium level of 5.5 mEq/L, which is elevated. Hyperkalemia increases the risk of cardiac arrhythmias, especially in combination with dehydration and acidosis, making close cardiac monitoring necessary. E. Renal failure: Elevated BUN (21 mg/dL) and creatinine (1.7 mg/dL) suggest impaired renal perfusion or acute kidney injury secondary to dehydration from osmotic diuresis. The client is at risk of progression to renal failure if fluid and electrolyte imbalances are not corrected. F. Cerebral edema: Cerebral edema is often caused by an overly rapid drop in effective serum osmolarity during treatment, primarily when blood glucose is lowered too quickly. The rapid shift in fluid from the bloodstream to the brain cells can cause swelling.