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Definition

Concussion is a functional brain injury caused by a force to the head, either directly or indirectly, which results in shear stress to brain tissue from rotational or angular forces. Mild traumatic brain injury (mTBI) is often used interchangeably with concussion. mTBI is defined as a head injury from blunt trauma or acceleration/deceleration forces with a Glasgow Coma Scale score between 13-15 and the presence of at least one symptom including brief loss of consciousness, confusion, or neurological issues for less than 30 minutes without prolonged amnesia or reduced Glasgow score.

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54 views1 page

Definition

Concussion is a functional brain injury caused by a force to the head, either directly or indirectly, which results in shear stress to brain tissue from rotational or angular forces. Mild traumatic brain injury (mTBI) is often used interchangeably with concussion. mTBI is defined as a head injury from blunt trauma or acceleration/deceleration forces with a Glasgow Coma Scale score between 13-15 and the presence of at least one symptom including brief loss of consciousness, confusion, or neurological issues for less than 30 minutes without prolonged amnesia or reduced Glasgow score.

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Definition

As defined by Scorza, Raleigh, and OConnor (2015) in a journal article published by


American Family Physician:
Concussion is a disturbance in brain function caused by direct or indirect force to the head.
It is a functional rather than structural injury that results from shear stress to brain tissue
caused by rotational or angular forcesdirect impact to the head is not required. (p. 123)
Mild traumatic brain injury (mTBI) is often used to describe concussion. Mild (1993), as
cited in The Cochrane Library, define Mild TB as:
The presence of a head injury resulting from blunt head trauma or deceleration or
acceleration forces, Glasgow Coma Scale score of 13 to 15 and at least one of the four
following criteria:
1. Any period of observed or self-reported loss of consciousness lasting 30 minutes or less,
2. Any loss of memory for events immediately before or after the trauma,
3. Any alteration in mental state at the time of the accident (e.g. feeling dazed, disoriented
or confused),
4. Observed signs of other neurological or neuropsychological dysfunction that may or may
not be transitory, and the absence of the following criteria:
1. Post-traumatic amnesia greater than 24 hours,
2. Glasgow Coma Scale score of less than 13, more than 30 minutes following the trauma.
(DAngel et al., 2013, p. 3)
A more detailed definition of concussion to assist in medical evaluation and management
is provided by McCrory, Meeuwisse, Johnston et al. (2008) as cited in the American
Family Physician and posted above as Table 1.

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