题目内容

病人麻醉前准备，下列哪项不正确的是

A. 高血压病人应降压治疗
B. 严重贫血者少量多次输血
C. 心衰者抗心衰
D. 纠正水电解质平衡失调
E. 有活动性出血的病人待失血补足后，才能施行手术
F. 第2、3或第3、4腰椎间隙

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