Lira Plascencia J, Ibargüengoitia Ochoa F, Argueta Zúñiga M, Karchmer S
Clínica de Alto Riesgo, Instituto Nacional de Perinatología, México, D.F.
Ginecol Obstet Mex. 1995 Aug;63:337-40.
Two hundred and ten cases with placenta previa, were reviewed (1989-1994). In 37 (17.6%) placenta accreta was present. From accretism cases in 26 (70.2%) only, there was the antecedent of cesarean section. Average age was 31 years; the highest risk group was 35-39 years with 26% of cases of accretism. Average parity was three, in the group of five gestaes, 33.3% developed placenta accreta. In the group without antecedent of cesarean section, accretism risk was 9.4%; with one section was 21.1%, but with two or more cesarean sections, it was 50%. In the presence of placenta previa advanced maternal age, and two or more cesarean sections, placenta accreta risk is high.
回顾了1989年至1994年间的210例前置胎盘病例。其中37例（17.6%）存在胎盘植入。仅在26例（70.2%）胎盘植入病例中有剖宫产史。平均年龄为31岁；风险最高的年龄组为35 - 39岁，占胎盘植入病例的26%。平均产次为3次，在妊娠5次的组中，33.3%发生胎盘植入。在无剖宫产史的组中，胎盘植入风险为9.4%；有1次剖宫产史的为21.1%，但有2次或更多次剖宫产史的则为50%。存在前置胎盘时，产妇年龄较大以及有2次或更多次剖宫产史，胎盘植入风险较高。
