My grandaughter is 8 months old today she woke up with her hands feet and lips blue..she is at hosp. what might this be none

Any : Any time a child has an episode of apnea (stops breathing), with choking, gagging, change in muscle tone and/or color change - especially turning blue - it is known as an alte or apparent life threatening event. When this happens you need to call the child's doctor immediately or go to the emergency room for evaluation. I'm glad she's at the hospital - it's the right place for her to be. 50% of the time a cause is not found, which means the other 50% of the time the cause is found. The list of what it could be is enormous - it could be a number of problems with the gastrointesinal system, neurological system, a cardiac or respiratory problem, infection, or even a metabolic problem. Doctors will do a complete history and physical followed by testing to try and determine the cause of these episodes. I hope this helps.

Oxygenation: Not knowing anything about her condition this is a sign of hypoxia or lack of oxygenation.