Recovery of Injured Lower Portion of the Ascending Reticular Activating System in a Patient with Traumatic Brain Injury

Title
Recovery of Injured Lower Portion of the Ascending Reticular Activating System in a Patient with Traumatic Brain Injury
Author(s)
장성호김성호임형원[임형원]여상석[여상석]
Keywords
AROUSAL SYSTEM; CONSCIOUSNESS; DISORDERS; COMA
Issue Date
201503
Publisher
LIPPINCOTT WILLIAMS & WILKINS
Citation
AMERICAN JOURNAL OF PHYSICAL MEDICINE & REHABILITATION, v.94, no.3, pp.250 - 253
Abstract
The authors report on a patient with traumatic brain injury who showed recovery of an injured lower portion of the ascending reticular activating system (ARAS) between the pontine reticular formation and the thalamus. A 57-yr-old male patient experienced head trauma. After 4 mos from onset, he exhibited impaired alertness, with a score of 7 on the Glasgow Coma Scale. At 40 mos after onset, the patient had a full Glasgow Coma Scale score of 15. The lower portion of the ARAS was reconstructed using the probabilistic tractography method. On 4-mo diffusion tensor tractography, the fractional anisotropy and the tract volume of the lower portion of the right ARAS were lower by more than 2 SDs of those of control subjects. By contrast, on 40-mo diffusion tensor tractography, the fractional anisotropy and the tract volume values of the lower portion of the right ARAS were within 2 SDs of those of the control subjects. The increment fractional anisotropy and the FV value of the lower portion of the right ARAS on 40-mo diffusion tensor tractography indicated recovery of the injured lower ARAS. As a result, recovery of an injured lower portion of the ARAS in a patient with traumatic brain injury was demonstrated.
URI
http://hdl.handle.net/YU.REPOSITORY/33238http://dx.doi.org/10.1097/PHM.0000000000000274
ISSN
0894-9115
Appears in Collections:
의과대학 > 재활의학교실 > Articles
의과대학 > 신경외과학교실 > Articles
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