婴儿从出生到满月为止叫做新生儿期。这是婴儿脱离母体来到人世的第一阶段。从一个在母体子宫内寄生的胎儿到一个单独生活的新生儿,这是一个很大的飞跃,为了适应外界崭新的环境,婴儿的身体内部发生了一系列的变化,特别是出生后第一周变化最大,这时也是对新生儿生存能力的最大考验,婴儿要自己呼吸,自己消化,吸收食物,排出代谢产物,抵抗外界细菌、病毒的侵扰,所以这段时间对于新生儿非常重要。 The baby is called the newborn period from birth to the full moon. This is the first stage where a baby comes out of her mother’s body. It’s a big leap from a fetus living in the mother’s uterus to a single newborn, and a series of changes have taken place inside the baby’s body to adapt to the new environment, especially in the first week of life At this time is the biggest test of the viability of newborns, the baby to breathe, digest, absorb food, metabolites, resistance to external bacteria, viruses, so this time is very important for newborns.