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人们常把“瓜熟蒂落”比喻为“十月怀胎,一朝分娩”的自然孕育规律,听起来似很贴切但未必准确。因为正常妊娠的时限,是从未次月经第一天算起至分娩止,共280天,即40周。早两周或晚两周分娩都属于正常范围的足月产。倘若妊娠超过294天,即怀孕42周为过期妊娠。过期妊娠,福兮?祸兮?有的夫妇对过期妊娠不禁沾沾自喜,以为如此“足胎”一准生个大胖小子抑或双胞胎,稍微有些医学
People often put “ripe ” metaphor “pregnant in October, once childbirth ” natural birth rules, sounds very appropriate, but may not be accurate. Because of the normal pregnancy time limit, it is never from the first day of menstruation until the end of childbirth, a total of 280 days, that is, 40 weeks. Two weeks earlier or two weeks late childbirth belongs to the normal range of full-term. If the pregnancy more than 294 days, 42 weeks of pregnancy is expired pregnancy. Exhausted pregnancy, Fu Xi? Bibi? Some couples can not help but complacent about expired pregnancy, thinking so “foot fetus” a quasi-Health a big fat boy or twins, a little bit of medicine