A member asked:

How long does a babies lips show blue from hypoxia after regaining oxygen?

A doctor has provided 1 answer

A few seconds: This is a loaded question, since the observation should hopefully be only after resuscitation in an EMS setting or after a spell at home and EMS is on the way. Blue lips signal a profound hypoxia, with oxygen saturations down into the 70's usually. If this is happening regularly, a cardiology visit is imperative. If it happens with cold, that's mainly just venous pooling, though ask your doc asap.

Answered 2/6/2021

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