临床上遇到一些延期妊娠(妊娠41～41~(+6)周)的孕妇,胎盘功能已开始减退,如果要等到过期妊娠以后才处理,往往此时胎儿已遭受损害,结局都不理想。为了提高对延期妊娠的认识,以降低围产儿的发病率和死亡率,并对产科处理提供依据,本文运用与过期和足月妊娠对比的方法对延期妊娠的临床资料作一回顾性分析。 Clinically encountered some delayed pregnancy (41 ~ 41 ~ (+6) weeks pregnant) pregnant women, placental function has begun to decline, if you have to wait until the expiration of the pregnancy after treatment, often at this time the fetus has been damaged, the outcome is not satisfactory. In order to improve the understanding of delayed pregnancy, to reduce the incidence and mortality of perinatal children, and to provide a basis for obstetric treatment, the paper compares the clinical data of late pregnancy with that of expired and full-term pregnancy by a retrospective analysis.