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Mild Traumatic Brain Injury Literature Review

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Review of Literature
Mild Traumatic Brain Injury Mild traumatic brain injury (TBI), otherwise known as a concussion, occurs from traumatic biomechanical forces placed on the head and neck affecting the brain that results in a pathophysiological process altering function (McCrory et al., 2013). Altered brain functions experienced during a mild TBI may include neuro-cognitive impairments, disturbance of vision, and vestibular-cochlear disruptions. The altered brain functions experienced during a mild TBI often occur rapidly once initial impact is felt, and symptoms or impairments of neurological function return to normal within a few weeks of initial onset (Signorettic et al., 2011). This altered brain function is thought to be due in part …show more content…
The etiology of a mild TBI involves a force applied to the body, head, or neck that results in a rapid acceleration of the brain overcoming the absorption properties of cerebral spinal fluid (Marshall, 2012). The subsequent result is a collision between the brain and the inner skull causing injury (Marshall, 2012). The symptoms experienced during a mild TBI are a result of the physiological changes occurring in the brain. The physiological effect of mild TBI is a complex set of events involving altered metabolic process, chemical homeostatic imbalances, and ionic fluctuations both intra- and extra-cellular within the brain (Marshall, 2012). The rotational and linear forces can produce a shearing and elongation affect of the neurons that can be attributed to the altered state of consciousness (Signoretti et al., 2011). An energy crisis or metabolic inhibition can occur within the brain after impact and is due in part to the ionic fluctuations, specifically potassium and sodium. The subsequent result is a decrease in mitochondrial function and adenosine triphosphate (ATP) production (Harmon et al., 2013). Rapid onset of symptoms is usually resolved within several weeks; however, long-term impairments may occur if repeated injury or increased cognitive function occurs prior to full recovery from the previous mild TBI (Marshall,

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