过期妊娠的高危程度及其影响问：过期妊娠对母儿有何影响？终止妊娠的方法和时机怎样掌握？答：凡月经周期正常的孕妇，妊娠达到或超过４２周（≥２９４天）即称过期妊娠。属病理妊娠之一。对母儿均有不良影响，尤其对围产儿的危害较突出。过期妊娠剖宫产率较非过期者约增... Excessive pregnancy risk and its impact on the Q: Exhausted pregnancy on the impact of mother and child? How to control the method and timing of termination of pregnancy? A: Where the normal menstrual cycle of pregnant women, pregnancy reached or exceeded 42 weeks (≥ 294 days) that is, expired pregnancy. Is one of the pathological pregnancy. On the mother and child have an adverse effect, especially for perinatal harm more prominent. Cesarean section rate of overdue pregnancy than non-expired by about ...