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病人，男性，62岁。因脑血管意外昏迷入院。查体：呼吸道有较多分泌物，肺部听诊呈湿哕音。护士为该病人吸痰时，操作错误的是
A、调节负压至40.0-53.3kPa
B、病人头部转向操作者
C、先插管再启动吸引器
D、吸管从深部向上提出，左右旋转吸痰
E、吸痰前采用超声雾化吸入

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