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采用前瞻性调查方法，对本次妊娠前有、无人工流产史孕妇各２００例，随访其妊娠结局。结果表明：人流组再次妊娠后产时胎盘粘连、产后出血、胎盘位置异常的发生率明显高于对照组（Ｐ＜０．０１），但与人流的次数、末次人流与本次妊娠的间隔时间无明显的相关性；人流组早产及产时胎儿窘迫的发生亦高于对照组，早产的发生与人流的次数有关，胎儿窘迫的发生与末次人流与本次妊娠的间隔时间有关。生育前人流６２％因未婚妊娠所致。
A prospective investigation was conducted on 200 pregnant women who had previous history of pregnancy without any induced abortion and were followed up for their pregnancy outcome. The results showed that the incidence of placenta accreta, postpartum hemorrhage and abnormal placenta location in the abortion group were significantly higher than those in the control group (P <0.01), but with the number of abortion, the interval between last abortion and this pregnancy No significant correlation; abortion group premature labor and fetal distress occurred during birth is also higher than the control group, the occurrence of preterm labor and the number of people related to the occurrence of fetal distress with the last flow and the pregnancy interval. 62% of pre-birth flow due to unmarried pregnancy.