Advanced Practice Registered Nurses (APRNs) acquire an additional level of knowledge and education beyond that required of Registered Nurses allowing them to play a larger role in patient care. In Texas, APRNs have completed a graduate-level education program accredited by an organization recognized by the Texas Board of Nursing that prepares them for one of the four following recognized advanced practice roles: nurse anesthetist, nurse-midwife, nurse practitioner, or clinical nurse specialist.