正常情况下动脉导管未闭应在以下哪段时间内关闭A.1岁内B.2~3周C.4~6周D.6周以后E.出生时都应关闭

作者: rantiku 人气: - 评论: 0
问题 正常情况下动脉导管未闭应在以下哪段时间内关闭
选项 A.1岁内 B.2~3周 C.4~6周 D.6周以后 E.出生时都应关闭
答案 B
解析 :在胎儿期间动脉导管未闭是正常生理所必需的,但出生后(一般2~3周)导管应自动闭合。

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