- Geriatric patients are defined as those aged 65 years and older. They experience various physiological changes with aging that impact anesthesia management. These include changes to the cardiovascular, respiratory, gastrointestinal, and neurological systems. Pre-operative evaluation of geriatric patients should consider their co-morbidities, functional status, and cognitive abilities. During anesthesia care, extra precautions are needed to prevent issues like hypotension, hypothermia, delirium and impaired drug metabolism that commonly affect the elderly.