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Executive functioning as outcome in patients after traumatic brain injury
J León-Carrión1, J C Alarcón, M Revuelta
1Human cognitive neuropsychological Laboratory, University of Seville, Spain.
The International Journal of Neuroscience
|June 12, 1998
Summary
Severe traumatic brain injury (TBI) impairs executive functioning, regardless of acute treatment. The Glasgow Outcome Scale often fails to detect significant impairment, highlighting the need for specific neuropsychological tests in TBI assessment.
Area of Science:
- Neuroscience
- Neurology
- Rehabilitation Medicine
Background:
- Traumatic Brain Injury (TBI) can lead to significant executive functioning deficits.
- Assessing the impact of acute-phase treatments on cognitive recovery after TBI is crucial.
- The sensitivity of the Glasgow Outcome Scale (GOS) in detecting neurocognitive impairment requires further investigation.
Purpose of the Study:
- To determine the effect of TBI on executive functioning.
- To evaluate if acute-phase treatments improve executive functioning post-TBI.
- To assess the utility of the GOS in detecting neurocognitive impairment severity.
Main Methods:
- A cohort of 35 conscious TBI survivors was studied within 2 years post-injury.
- Patients were divided into two groups: those requiring neurosurgery (n=13) and those not (n=22).
- Executive functioning was assessed using the Wisconsin Card Sorting Test (WCST) and the Tower of Hanoi/Sevilla, alongside clinical variables like GCS and GOS.
Main Results:
- Severe TBI significantly impairs executive functioning, irrespective of acute treatment.
- Neurosurgical intervention did not demonstrate an improvement in executive functioning.
- The GOS identified severe impairment in only 25% of patients, indicating limited sensitivity.
Conclusions:
- Executive functioning deficits are a direct consequence of severe TBI and associated acute pathophysiological events.
- The Tower of Hanoi/Sevilla is proposed as a sensitive tool for routine executive functioning assessment in TBI patients.
- Mild TBI cases warrant comprehensive neuropsychological evaluation to identify potential cognitive deficits.