Advanced practice nursing (APN) refers to a group of nursing roles that require advanced education and clinical training. APNs include positions such as nurse practitioners, clinical nurse specialists, nurse anesthetists, and nurse midwives. These professionals often hold a master's or doctoral degree and are equipped to provide a higher level of care, including diagnosing and treating medical conditions. APNs play a crucial role in healthcare by delivering comprehensive services, often working independently or in collaboration with other healthcare providers. They can perform physical exams, order and interpret diagnostic tests, and initiate treatment plans, thereby improving access to care and enhancing patient outcomes in various settings.