参考答案：A

解析：

The nurse should assess for hypocortisolism. Abrupt withdrawal of endogenous cortisol may lead to severe adrenal insufficiency. Steroids should be given during surgery to prevent hypocortisolism from occurring. Signs of hypocortisolism include vomiting, increased weakness, dehydration and hypotension. After the corticotropin-secreting tumor is removed, the client shouldn’t be at risk for hypoglycemia or hyperglycemia. Calcium imbalance shouldn’t occur in this situation.