Description

The Veterans Administration uses certain criteria to grade the severity of closed traumatic brain injury (TBI).


Parameters:

(1) initial Glasgow Coma Score (GCS)

(2) loss of consciousness (LOC)

(3) length of alteration of consciousness (AOC)

(4) length of post-traumatic amnesia (PTA)

(5) neuroimaging findings

 

Parameter

Mild TBI

Moderate TBI

Severe TBI

initial GCS

13 to 15

9 to 12

3 to 8

LOC

<= 0.5 hours

0.5 to 24 hours

> 24 hours

length of AOC

<= 24 hours

> 24 hours

> 24 hours

length of PTA

<= 1 day

1 to 7 days

> 7 days

neuroimaging

normal

normal or abnormal

normal or abnormal

 

Variants:

(1) an older version says that LOC for moderate TBI was up to 6 hours rather than 24.

(2) focal neurologic deficits may be included


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