孕期最让人关切的话题莫过于胎儿的健康,然而一些危及胎儿的状况还是时有发生。产科将那些可能对母体或胎儿有较高危险的妊娠叫做高危妊娠,意指此次妊娠有可能会导致胎儿流产、胎停、畸形、胎死、小样儿、智障等。下面我们就来说几种比较常见的高危症状:孕早期及晚期的先兆流产、胎位不正、羊水过少、胎盘老化。 The most worrying topic during pregnancy is more than the health of the fetus, however some conditions that endanger the fetus still occur from time to time. Obstetrics refers to those who may have a higher risk of maternal or fetal pregnancy is called high-risk pregnancy, which means that the pregnancy may lead to fetal miscarriage, fetal stop, deformity, fetal death, small sample, mental retardation and so on. Here are some of the more common high-risk symptoms: early and late trimester threatened abortion, abnormal fetal position, oligohydramnios, placental age.