RNS' workplaces are Emergency Rooms (ERS) and Intensive Care Units (ICUS). Registered Nurses (RNS) are healthcare professionals who provide care to patients in a variety of settings. They are responsible for assessing, diagnosing, and treating patients in both emergency and intensive care settings. In the ER, RNS provide immediate medical attention to patients with life-threatening conditions, while in ICUs they provide long-term care to critically ill patients.