Allen试验主要用于检查手部的血液供应， 桡动脉 与尺动脉之间的吻合情况。具体步骤如下： 1.术者用双手同时按压患者一侧桡动脉和尺动脉； 2.嘱患者反复用力握拳和张开手指5～7次至手. 简介 埃德加·爱伦·坡（edgar allan poe，1809年1月19日—1849年10月7日），19世纪美国诗人、小说家和文学评论家，美国浪漫主义思潮时期的重要成员。 埃德加·爱伦·坡肖像 生平 早年.
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