The effects of post-traumatic amnesia on information processing following mild traumatic brain injury

De Monte, Veronica Eileen, Geffen, Gina Malke and Massavelli, Bronwyn May (2006) The effects of post-traumatic amnesia on information processing following mild traumatic brain injury. Brain Injury, 20 13-14: 1345-1354. doi:10.1080/02699050601082073


Author De Monte, Veronica Eileen
Geffen, Gina Malke
Massavelli, Bronwyn May
Title The effects of post-traumatic amnesia on information processing following mild traumatic brain injury
Journal name Brain Injury   Check publisher's open access policy
ISSN 0269-9052
Publication date 2006-12-01
Sub-type Article (original research)
DOI 10.1080/02699050601082073
Open Access Status
Volume 20
Issue 13-14
Start page 1345
End page 1354
Total pages 10
Place of publication Abingdon, England
Publisher Taylor & Francis Ltd
Language eng
Subject C1
730104 Nervous system and disorders
170101 Biological Psychology (Neuropsychology, Psychopharmacology, Physiological Psychology)
Formatted abstract
Primary objective:
The aim of this study was to determine whether a single measurement of level of PTA could distinguish patients more severely injured from those less so, by investigating the effect of PTA on psychometric test performance.

Methods and procedures:
Ninety patients with mTBI completed a word recall test, a spoken version of the Speed of Comprehension test and the Digit Symbol Substitution Test (Digit Symbol), within 24 hours of injury. These patients were divided into two groups, based on the presence (n = 42) or absence (n = 48) of PTA at the time of testing. PTA was measured with an eight-item orientation scale.

Main outcomes and results:
An independent groups design showed that patients with mTBI in PTA recalled fewer words after two presentations and after a delay and completed fewer symbols in 90 seconds on Digit Symbol than patients with mTBI not in PTA. Discriminant function analysis was applied to explore whether classifying severity of injury in terms of number of orientation questions answered would be useful.

Conclusions:
These results indicate that for individuals with mTBI in PTA, speed of information processing and verbal memory are impaired. A single brief administration of orientation questions may be sufficient to provide an index of severity of mTBI within the first 24 hours.
Keyword Neurosciences
Rehabilitation
post-traumatic amnesia
mild-traumatic brain injury
severity
information processing
verbal recall
Head-injury
Rapid Screen
Concussion
Symptoms
Q-Index Code C1

 
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Created: Sat, 26 Jan 2008, 03:01:45 EST