If you are concerned, then the best thing you can do for your kids is to get them in for a sleep study. Keep in mind that even if they don't have it now, they already snore and there is a strong inheritance pattern. So you may want to keep an eye on their apnea status as they grow up.
Here are some excellent resources for parents about having your child evaluated and symptoms in kids such as attention problems, ADHD like symptoms, etc.
INFORMATION FOR PARENTS
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Being defeated is often a temporary condition. Giving up is what makes it permanent.
Marilyn Von Savant
That which does not kill you makes you stronger-Friedrich Nietzsche
Friedrich must of had apnea.