Pediatric intensive care unit (PICU) registered nurses provide critical care to infants and children up to Fifteen years old. In addition to providing around-the-clock care to these patients, PICU Registered Nurse offer support to the parents. This parental support can range from emotional encouragement to advising parents on how to take care of a child when they return home. PICU Registered Nurse work as a team member with other nurse practitioners and physicians. Their primary responsibility is to ensure that a child’s critical care treatment is secure.