Critical care nurse, CCU RN, intensive care nurse, ICU nurse, ICU nursing, ICU, intensive care, critical care, registered nurse, RN, R.N., nurse, nursing, healthcare, health care, patient care AMN Healthcare Nursing Job ID #3596611. Within that role, the CN performs all steps of the nursing process, including assessing patients; interpreting data; planning, implementing, and evaluating care; coordinating care with other providers; and teaching the patient and family the knowledge and skills needed to manage their care and prevent complications.