患者女，63岁，因“颅内肿瘤”拟在仰卧位下行双侧额部颅骨切开肿瘤切除术。患者近期出现头痛、恶心、视物模糊等症状。神经系统体检未发现阳性体征。颅脑MRI：矢状窦附近有一巨大脑膜瘤。手术开始后，患者呼气末二氧化碳分压开始下降并出现低血压。
目前的治疗方法有（）
A.呼气末正压通气
B.应用利尿剂
C.头低于心脏水平
D.压迫颈静脉
E.快速补液
F.手术关闭窦口
G.静脉应用血管活性药物
H.应用糖皮质激素
参考答案：A, C, D, E, F, G
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| How do you spend your weekends? On Saturday moming I 1 get up very late. I wash my face and then go out to do morning exercises to keep 2 . After I have my breakfast, I often go to a shopping center 3 my mother at 8:20 in the morning. The shopping center is not near my house, so we usually 4 there. When we 5 there, it is usually about 9:30. The shopping center is new 6 big. There are many kinds of things there, such as TVs, fridges, computers, clothes, food and drinks. I like the clothes there. They 7 very nice. There are usually many people there. Parents have to 8 their children well because it's too crowded there and children may get lost in it. Why do 9 people go there to buy things? Because the things there are usually good and cheap. There are also many places you can play in. It's a lot of fun 10 shopping in it. | |||
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