关于血、尿雌三醇(E3)，错误的说法是() ["A．尿雌三醇正常值为52μmol/24h(15mg/24h)","B．血雌三醇急剧下降说明胎儿宫内死亡","C．血雌三醇缓慢下降可能为过期妊娠","D．血雌三醇下降较快可能为胎儿宫内发育迟缓","E．尿雌三醇连续多次<35μmol/24h(10mg/24h)，表示胎盘功能低下"]
了解高危妊娠孕妇的胎盘功能应测定孕妇的() ["A．胎儿头皮血测定","B．血或尿中HCG","C．血或尿中雌三醇","D．尿中雌三醇，并观察其动态变化","E．羊水中卵磷脂/鞘磷脂(L/S)比值"]
胎盘功能异常的是() ["A．孕38周胎盘泌乳素值为4mg/24h","B．孕38周尿雌三醇为28μmol/24h(8mg/24h)","C．孕40周胎盘泌乳素(HpL)值为8mg/L","D．尿雌三醇/肌肝(E/C)比值>15mg/24h","E．血清妊娠特异性β糖蛋白>170mg/L"]
胎儿窘迫的早期表现为() ["A．胎动明显减弱","B．胎动次数明显减少","C．胎动次数稍增加","D．胎动频繁","E．胎动消失"]
高危妊娠指() ["A．对孕妇有高度危险","B．对产妇有高度危险","C．凡是能危害母儿或导致难产","D．对新生儿有高度危险","E．对胎儿有高度危险"]
呼吸、心跳骤停的早期主要诊断依据是什么?
