关于胎心率基线,下列描述错误的是
A.胎心率>160次/分,历时10分钟称心动过速
B.胎心率<120次/分,历时10分钟称心动过缓
C.基线摆动包括胎心率的变异振幅和变异频率
D.出现基线摆动表示胎儿储备能力丧失
正确答案是D
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