Niswonger Children’s Hospital In Johnson City Is Opening A New Special Care Unit Designed To Care For Babies With Neonatal Abstinence Syndrome, Or NAS. The 17-Room Unit Is Designed To Help Those Babies Born Dependent To Prescribed Medications That The Mother Has Used During Pregnancy. The Special Unit Will Provide Private Rooms And Allow For A More Specialized Setting Than Traditional Treatment. The New Unit Officially Opens Wednesday.