Conclusions When the pelvis was normal, fetal macrosomia, abnormal fetal position and abnormal uterine were main causes leading to abnormal second stage of labor.
结论在骨盆正常情况下，新生儿过大、胎方位异常及产力异常是造成第二产程异常的主要原因。
2
Objective:To establish the new technology for detection of fetal cell-free DNA in maternal plasma at early pregnant stage.
目的：建立一种检测早孕妇女血浆中胎儿游离DNA的新方法。
3
Objective To explore the efficacy of human fetal membranes(HFM) pressing in combination with infrared irradiation(II) in treating ulcer stage pressure sores.