TY - JOUR PY - 2020// TI - Definition and epidemiology of mild traumatic brain injury JO - Neurochirurgie (Paris) A1 - Lefevre-Dognin, Clemence A1 - Cogné, Mélanie A1 - Perdrieau, Valérie A1 - Granger, Aurélie A1 - Heslot, Camille A1 - Azouvi, Philippe SP - ePub EP - ePub VL - ePub IS - ePub N2 - Background / objectives. The definition of mild traumatic brain injury (mTBI), also known as concussion, has been a matter of controversy, which makes comparison between studies. Incidence varies greatly from one country to another. The present article reviews definitions and epidemiology.

METHODS: Literature review.

RESULTS: According to the Mild TBI Committee of the American Congress of Rehabilitation Medicine, revised by the World Health Organization (WHO), mTBI is defined by a Glasgow Coma Scale score between 13 and 15 at 30 minutes post-injury, and one or more of the following symptoms: <30 min loss of consciousness; < 24 hours' post-traumatic amnesia (PTA); impaired mental state at time of accident (confusion, disorientation, etc.); and/or transient neurological deficit. If a focal lesion is found on computed tomography (CT) or magnetic resonance imaging (MRI), the term "complicated mild TBI" has been proposed. Incidence of mTBI is 200-300/100,000 persons per year for hospitalized patients and probably twice as high if non-hospitalized patients are included. However, a few recent population-based studies reported a much higher rate (>700/100,000). A changing pattern of epidemiology has been found in high-income countries, related to a decrease in road-accident injuries in young adults, while conversely the proportion of falls has increased with population aging.

CONCLUSION: Mild TBI is a major public health concern, the epidemiology of which has greatly changed in the last twenty years.

Copyright © 2020. Published by Elsevier Masson SAS.

Language: en

LA - en SN - 0028-3770 UR - http://dx.doi.org/10.1016/j.neuchi.2020.02.002 ID - ref1 ER -