随着医疗保健质量提高,死亡比重渐向小龄化演变,5岁以下儿童中主要死于1岁内的婴儿期,而婴儿死亡率中约2/3死于新生儿期.新生儿中则以生后第1天第1小时死得最多。死因多数为室息。复苏欠佳还可致残, As the quality of health care improves, the proportion of deaths has shifted towards younger age, with infants under one year of age mostly dying from infancy within one year of age, while about two-thirds of infant mortality rates have been neonatal The first day of life after the first hour of death die. The cause of death for most of the room. Poor recovery can be disabled,