孕期会发生多种变化,其中大多是生理性的,但有些是病理性的,甚至是大难临头的先兆。如子痫,这是妊娠特有的并发症,为孕妇死亡的三大原因之一,也是胎婴儿死亡的重要原因。但其发生前有一些先兆,如能重视,及早就医,就能阻止其发生,避免灾难的降临。反之,则会使母子处于险境之中,造成重大的损失。 Many changes occur during pregnancy, most of which are physiological, but some are pathological and even a harbinger of a catastrophe. Such as eclampsia, which is unique to pregnancy complications, one of the three major causes of death of pregnant women, but also an important cause of fetal death. However, there are some precursors before its occurrence. If attention is paid to medical treatment as early as possible, it will be prevented from happening and the disaster will not come. On the contrary, it will make the mother and child in danger, resulting in significant losses.