This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.ĭata Availability: All relevant data are within the paper and the studies cited and highlighted in Tables 3-6.įunding: KM received personnel funding from the Canadian Institutes of Health Research (CGS-M). Received: JanuAccepted: MaPublished: April 11, 2017Ĭopyright: © 2017 McInnes et al. Kobeissy, University of Florida, UNITED STATES Study limitations notwithstanding, these findings highlight the need to carefully examine the long-term implications of a single mTBI.Ĭitation: McInnes K, Friesen CL, MacKenzie DE, Westwood DA, Boe SG (2017) Mild Traumatic Brain Injury (mTBI) and chronic cognitive impairment: A scoping review.

Results indicate that, in contrast to the prevailing view that most symptoms of concussion are resolved within 3 months post-injury, approximately half of individuals with a single mTBI demonstrate long-term cognitive impairment. Data relating to the presence/absence of cognitive impairment were extracted from 45 studies meeting our inclusion criteria. CINAHL, Embase, and Medline/Ovid were searched July 2015 for studies related to concussion and cognitive impairment. In light of the incongruency between these longer-term changes in brain pathology and the number of individuals with longer-term mTBI-related symptoms, particularly impaired cognitive function, we performed a scoping review of the literature that behaviourally assessed short- and long-term cognitive function in individuals with a single mTBI, with the goal of identifying the impact of a single concussion on cognitive function in the chronic stage post-injury.

The number of individuals who experience persistent symptoms appears to be low despite clear evidence of longer-term pathophysiological changes resulting from mTBI. Symptom resolution is thought to occur within 3 months post-injury, with the exception of a small percentage of individuals who are said to experience persistent post-concussion syndrome. With mTBI comes symptoms that include headaches, fatigue, depression, anxiety and irritability, as well as impaired cognitive function. Mild traumatic brain injury (mTBI), or concussion, is the most common type of traumatic brain injury.

Brain injury out of work 2 years