Advanced Practitioner/CNS Cardiology Legacy Health SystemAdvanced Practitioner/CNS CardiologyPortland, ORThe Cardiology Clinical Nurse Specialist (CNS) promotes professional development and the advancement of nursing practice, facilitates the provision of quality, evidence based care and is a change agent/role model. Some CNSs may expand their nursing practice to include prescriptive authority for pharmacologic agents to augment the care that they are responsible and accountable to provide.