Ambulatory care nursing is the nursing care of patients who are treated as outpatients, indicating they do not require an overnight stay in a hospital. Ambulatory care refers to the clinical, organizational, and professional activities that registered nurses perform with and for individuals, groups, and communities that want to improve their health or seek treatment for a health problem. Clinicians established ambulatory emergency care (AEC) as a way to provide emergency care outside of a hospital's regular bed foundation. Because AEC is delivered in a clinic setting, it can continue to operate during periods of high bed occupancy, relieving bed pressures and ensuring that selected patients receive prompt care. Ambulatory care nurses use evidence-based information across a variety of outpatient health care settings to achieve and ensure patient safety and quality of care while improving patient outcomes.