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Advanced Practice Nurses
Advanced practice nurses (APNs) are a broad category of registered nurses (RNs) who have completed advanced clinical nurses' educational practice requirements beyond the two to four years of basic nursing education required for all RNs. Under the advanced practice nursing designation fall four categories of nursing specialties: clinical nurse specialists (CNSs), nurse practitioners (NPs), nurse-midwives (NMs), and nurse anesthetists (NAs). According to the American Nurses' Association, there are well over 200,000 advanced practice nurses working in the United States.