There are CRNAs working at a number of children's hospital- Children's Hospital of Michigan and Mott Childrens Hospital as an example. The current AANA Newsbulletin has ads for CRNAs at The Children's Medical Center, Dayton OH & CookChildren's Health Care System, Fort Worth TX. I'm sure there are more positions available.
I salute all of my colleagues working in pediatric hospitals- its a special niche and you demonstrate every day the knowledge, skill, caring and compassion that are the hallmarks of our profession. KUDOS