The ACE unit model was developed by Landefeld, Palmer, and Kresevic and colleagues in 1995 at the University Hospitals of Cleveland.18 and 19 The ACE program follows a model of holistic care, including the social and environmental context, rather than solely focusing on medical diagnoses.20 The ACE program implements changes in 4 areas: creating a specially designed environment, providing patient-centered care, multidisciplinary team discharge planning, and enhanced review of medical care.18, 20, 21 and 22 These changes were designed to improve geriatric care and outcomes.