第22题: [单项选择]患儿,1岁,因化脓性脑膜炎入院,遵医嘱静脉给甘露醇降颅压。护理操作应除外()。 A. 每次用药前检查药液的质量以防结晶被输注 B. 若有结晶须加热使其消失后再用 C. 注射时勿使药液漏到血管外 D. 单独输注 E. 先缓慢推注,后静脉滴入 参考答案:E 答案解析:甘露醇的作用机制是通过渗透性脱水作用,减少脑组织含水量,用药后使血浆渗透压升高,能把细胞间液中的水分迅速移入血管内,使组织脱水。由于形成了血脑脊液间的渗透压差,水分从脑组织及脑脊液中移向血循环,由肾排
第34题: [单项选择] Questions 19 to 21 are based on the conversation you have just heard. A. Only one dolphin was able to see the light. B. The male dolphin received more rewards. C. Both dolphins were put in the same tank. D. The lever was beyond the dolphins’ reach. 参考答案:A