TY  - JOUR
PY  - 2004//
TI  - Duration of cognitive impairment after sports concussion
JO  - Neurosurgery
A1  - Bleiberg, Joseph
A1  - Cernich, Alison N.
A1  - Cameron, Kenneth L.
A1  - Sun, Wenyu
A1  - Peck, Karen
A1  - Ecklund, P. James
A1  - Reeves, Dennis
A1  - Uhorchak, John
A1  - Sparling, Molly B.
A1  - Warden, Deborah L.
SP  - 1073
EP  - 78; discussion 1078
VL  - 54
IS  - 5
N2  - OBJECTIVE: We sought to determine the duration of cognitive impairment after sports concussion. METHODS: We conducted a study with a prospective design in which 729 athletes underwent preseason baseline testing by being administered a computerized neuropsychological test battery, followed by retesting at regular intervals after they sustained sports-related concussions. A control group consisting of nonconcussed athletes drawn from the same baseline population underwent testing at parallel intervals. RESULTS: Cognitive impairment in this primarily American Academy of Neurology Grade II sample of boxing concussions was apparent on the day of injury and at 1 to 2 days postinjury. Recovery of cognitive performance occurred during the 3- to 7-day interval. Comparison with control subjects showed that absent or attenuated practice effects, in addition to frank deterioration from baseline, were indications of recent concussion. CONCLUSION: The present findings of recovery during the 3- to 7-day interval postinjury are consistent with the American Academy of Neurology Grade II return-to-play practice parameters suggesting a 1-week time-out from participation in contact sports.<p /> <p>Language: en</p>
LA  - en
SN  - 0148-396X
UR  - http://dx.doi.org/
ID  - ref1
ER  -