Beauty & Health>General Health

Once heart stops how long is it until brain damage occurs?

Anonymous

∙ 10y ago

Updated: 9/7/2023

There are a lot of variables, but 4 minutes is the usual guideline. Blood carries oxygen, and blood is pumped by the heart. Brain damage occurs after 4 minutes without fresh oxygen to the brain.

Wiki User

∙ 14y ago

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More answers

Brain damage starts after 10 minutes, after that you risk serious permanent brain damage. All brain surgerys that require stopping the heart are done in 10 minutes or less.

Wiki User

∙ 15y ago

after about 4 minutes unless his body temp is really cold then the rate of breakdown is reduced

Wiki User

∙ 17y ago

Once a heart stops it takes up to 6 minutes before permanent brain damage can occur. This is because the brain has been starved for fresh oxygenated blood and was not being nourished.

Wiki User