通过对有人工流产史者1476例分娩与正常5907例分娩对比研究发现:人工流产可导致前置胎盘发病率的增加,手术次数越多,发病率上升越明显;且术后远期并发症和分娩并发症也明显增多,术后再次妊娠时间间隔越短,前置胎盘发病率越高。认为减少人工流产率是降低前置胎盘发病率的根本途径,对术后再次妊娠至少应间隔半年以上。 Through a comparison of 1476 cases of artificial abortion with normal 5907 cases of childbirth, we found that induced abortion could lead to the increase of the incidence of placenta previa, and the more the number of operations, the more obvious the increase of the incidence rate. The long-term postoperative complications and The complications of childbirth were also significantly increased. The shorter the interval of pregnancy after pregnancy, the higher the incidence of placenta previa. To reduce the rate of induced abortion is to reduce the incidence of placenta previa an essential way of pregnancy after pregnancy should be at least more than six months intervals.