sudden unexpected death

…Sudden deaths in infants can be broadly divided into (1) cases where an infant suffers from some potentially fatal disease (such as congenital heart disease or a malformation) and the infant's condition suddenly worsens, and (2) cases where an infant who appears healthy, or an infant with a minor disease whose death was not expected at all, dies within a very short period of time. In many countries and Japan, sudden deaths (sudden deaths) in infants, particularly type (2), have become a problem, and are sometimes called sudden unexpected deaths (SUD). Most SUDs occur in infants under 6 months of age, and are particularly common in infants aged 1 to 4 months. …

*Some of the terminology that refers to "sudden unexpected death" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…乳幼児の急死には，(1)死亡の可能性のあるなんらかの疾患(たとえば先天性心疾患，奇形など)に罹患していて病状が急に悪化して死亡する場合と，(2)外見上健康と思われていた乳幼児，あるいは軽症疾患で死亡などはまったく予測できなかった乳幼児が，きわめて短時間内に死亡する場合に大別できる。諸外国および日本で，とくに上記(2)の乳幼児の急死(突然死)が問題になっており，急性不測死sudden unexpected death(SUD)といわれることもある。SUDは生後6ヵ月以内の乳児が大部分を占め，ことに生後1～4ヵ月の乳児に多い。…

※「sudden unexpected death」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報