如使用乙醇局部湿热敷，乙醇的浓度是

问题：

回答下面的题目：
患者，男，35岁，急性胃肠炎，护士遵医嘱给予0.9%氯化钠500 ml+10%氯化钾15 ml+VitC 2 g静脉输液治疗，60滴／min，输液至第三天，患者局部出现红肿，灼热，疼痛，沿静脉走向出现条索状红线。
下列护理措施，错误的是

A . 20%—30%
B . 25%—35%
C . 30%—50%
D . 75%
E . 95%

参考答案：E

参考解析：

局部用50%硫酸镁或95%乙醇溶液行湿热敷。

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