Demographics and Physiology The global population is aging rapidly, with older adults comprising the fastest-growing segment in the United States. As mobility and active lifestyles increase among the elderly, injury has become the fifth leading cause of death in this demographic. Geriatric trauma presents unique challenges; data shows that older adults face higher mortality rates than younger patients with similar injury severity,. This vulnerability is largely due to "decreased physiologic reserve," characterized by declining cellular function and impaired homeostatic mechanisms that reduce the body's ability to tolerate the stress of injury,. Furthermore, preexisting conditions (PECs) such as cirrhosis, coagulopathy, COPD, ischemic heart disease, and diabetes significantly increase the likelihood of mortality.

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