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为研究绒毛膜外剥离征象是否是自然流产及围产期不良后果的危险因素,分析1992～1993年在Ninewells医院早孕时有阴道出血及行B超检查确定孕周的病例。行B超检查并记录,重点在于区别生理性绒毛膜间隙(孕16周后才发现)及绒毛膜外剥离。绒毛膜外剥离表现为仍融合的绒膜及羊膜从蜕膜上分离出来。80例小于孕16周有绒毛膜外剥离征象为病例组,有阴道出血病史无绒毛膜外剥离征象为第二组,无阴道出血作B超确定孕周的为第三
To study whether the signs of extracapsular dissection are the risk factors of spontaneous abortion and perinatal adverse outcomes, we analyzed cases of vaginal bleeding during pregnancy in Ninewells Hospital from 1992 to 1993 and gestational age confirmed by ultrasound examination. Line B ultrasound examination and record, the focus is to distinguish between physiological chorionic gap (16 weeks after pregnancy was found) and chorionic stripping. Extra-chorionic exfoliation is characterized by the still fused chorion and amniotic membrane separated from the decidua. 80 cases less than 16 weeks pregnant with signs of extracapsular dissection was the case group, history of vaginal bleeding without extracapsular dissection signs for the second group, no vaginal bleeding for the determination of gestational weeks for the third