Abnormal presentation - Ijotai

Japanese: 異常胎位 - いじょうたいい
Abnormal presentation - Ijotai

…This is an abnormal presentation in which the fetus's longitudinal axis crosses the longitudinal axis of the uterus (Figure), and occurs in 0.5% of all births. Vaginal delivery of a mature baby is considered almost impossible.

*Some of the terms that refer to "abnormal presentation" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…胎児の縦軸と子宮の縦軸とが交差する異常胎位をいい(図),全分娩中の0.5%にみられる。成熟児の経腟分娩はほとんど不可能と考えられる。…

※「異常胎位」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

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