Infant Sleep Apnea

Dear Dr.
I have 2 children and prenate with my 3rd. When my first child was born she was not breathing completely on her own, and was later diagnosed with sleep apnea. When I was pregnate with my 2nd child they said he would more than likely have sleep apnea also, but he was as healthy as can be. What causes sleep apnea in babies, and what are the chances of my 3rd child having it?
Thank you.

[National Jewish]

In babies it is more likely for enlarged tonsils and/or adenoids (adenoids) to be a cause of sleep apnea. Please continue to work closely with the doctors who know your first child, since they are in a better position to discuss the potential outcome of your current pregnancy. Please check with your local Children