Ｃｅｒｅｂｒａｌ Ｈｙｐｏｘｉａ 再考；31－3－22、金曜6時半

＞＞enlargement of their brains' Virchow-Robin (VR) spaces, gaps in the brain matter surrounding blood vessels that look like white birdshot on MRIs. (Enlarged VR spaces are found in the elderly and in people with Alzheimer's disease, but they don't normally show up in people in their twenties and thirties, the age of these climbers.) 

これは、高山病と、脳の器質的変化についての記述
　　https://plaza.rakuten.co.jp/dadkoala/diary/201903150000/

Ｃｅｒｅｂｒａｌ　Ｈｙｐｏｘｉａ　について

https://medlineplus.gov/ency/article/001435.htm

では次のよう記述有り；

＞＞
Brain cells are very sensitive to a lack of oxygen. Some brain cells start dying less than 5 minutes after their oxygen supply disappears. As a result, brain hypoxia can rapidly cause severe brain damage or death.