Delirium and Neuropsychological Recovery Among Emergency General Surgery Survivors

Inclusion Criteria: * Adult age 65 years and older * Admitted to one of the participating hospitals * Undergone an abdominal orthopedic, skin, or vascular surgery in an emergency or unplanned fashion * English-speaking * Able to provide consent or have a legally authorized representative to provide consent * Access to a telephone or an internet connected computer or smart device * Discharged to home or sub-acute rehabilitation * At least one episode of delirium or subsyndromal delirium, i.e. screen positive on at least one out of the four items on the Confusion Assessment Method-ICU (CAM-ICU) in the period prior to discharge from acute care. Exclusion Criteria: * A self-reported diagnosis of cancer with short life expectancy * A history of dementing illnesses and other neurodegenerative disease such as Alzheimer's disease (AD), Parkinson disease, or vascular dementia, or current prescription of anti-dementia medication, or ruled out by Functional Activities Questionnaire (FAQ) score defining dementia; a history of significant traumatic brain injury * Acute or subacute neurologic deficit expected to prevent independent living after hospital discharge, e.g., a history of a significant traumatic brain injury * Have any spinal cord injury with persistent neurologic deficit at the time of study enrollment * Incarcerated or homeless at the time of study enrollment * Acquired neurologic injury (stroke, traumatic brain injury, cerebral edema/swelling, anoxic brain injury, or any other acute/subacute severe neurologic deficit) as the admitting diagnosis or a new event during the course of hospitalization (confirmed by EMR) * A history of bipolar disorder or schizophrenia (confirmed by EMR)