[名词解释] 外骨痂

提示胎儿皮肤成熟度()测定胎儿肾成熟度()了解胎儿肺成熟度() ["A．羊水细胞学检查","B．羊水中肌酐值","C．羊水脂肪细胞出现率","D．羊水胆红素测定","E．羊水震荡试验"] 醒状昏迷 完全骨折 胎头受压()胎盘功能低下()脐带受压() ["A．无激惹试验有反应型","B．缩宫素激惹试验阴性","C．变异减速","D．早期减速","E．晚期减速"] 创伤性骨折 外骨痂