在人的一生中新经历的最剧烈的变化时期是新生儿期。在此期所有的器官、组织都要具备到子宫外生活的适应能力,特别是在出生的一瞬间,从胎盘呼吸转换到肺呼吸,在人的所有机能中可算是最大的适应能力了。关于新生儿的呼吸机能,自古以来就都很感兴趣,虽然研究也有许多成绩,而就其适应来说,只是最近从胎儿期进行连续观察之后,才稍有了解,但尚有不少疑问。 The most dramatic period of new experience in one’s life is the neonatal period. During this period, all organs and tissues should have the ability to adapt to the life outside the uterus. In particular, at the moment of birth, the switch from placental breathing to lung respiration can be regarded as the greatest adaptability among all functions of man. The respiratory function of newborns has long been of interest since ancient times. Although there are many achievements in the study, its adaptation is only slightly understood after continuous observation from the fetus. However, there are still many questions.