单项选择题
国人施行硬膜外间隙穿刺时穿破硬膜的发生率约()
A.O.01%~0.1%
B.0.27%~0.5%
C.1%~1.5%
D.2%~3%
E.3%~10%
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单项选择题
A.O.01%~0.1%
B.0.27%~0.5%
C.1%~1.5%
D.2%~3%
E.3%~10%
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