What is a peadatric nurse?

A Peadatric Nurse.

I believe you have a spelling error here with the Word "Peadatric"

There are two common spellings of the Word Paediatric and Pediatric.

The Word paediatric is Greek in origin and constructed from the Words paedion, meaning "child" and iatriki, meaning "medicine"

A Paediatric Nurse receives specific training relating to children within the hospital environment and this includes intensive care of newborn babies to near adult age children.