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A 32-year-old member asked:

If you collapse and stop breathing, how long does it take until your fingers turn blue? or your lips go blue?

1 doctor answer3 doctors weighed in
Dr. Scott Welker
General Surgery 28 years experience
About 2 minutes: There's oxygen there until the person actually collapses; the tissues use the oxygen which changes the color of the blood and makes things look "blue". It's easiest to see in the fingers and lips, but actually occurs everywhere. When it's really bad, the whole body turns blue. Scary stuff! the cure, obviously, is to get oxygen moving in and out of the lungs again.
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Last updated Sep 3, 2017

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