单选题 The nurse is administering total parenteral nutrition (TPN) to a client who underwent surgery for gastric cancer. What is a major complication of TPN?
A. Hyperglycemia.
B. Extreme hunger.
C. Hypotension.
D. Hypoglycemia.

【正确答案】 A
【答案解析】The solution, used as a base for most TPN, consists of a high dextrose concentration and may raise blood glucose levels significantly, resulting in hyperglycemia. Fluid overload may cause hypertension, not hypotension. Extreme hunger occurs with hypoglycemia.