Objective: to explore memory functioning 7-years after severe pediatric TBI, associated factors, and relationships with other outcomes.
Method:Children aged 0-15 years (n=65), consecutively admitted over a 3-year period in a single trauma center, who survived after severe non-inflicted TBI, were included in a prospective longitudinal study. Memory assessments were performed 7-years post-injury using the Children's Memory Scale (CMS) or the Wechsler Memory Scale (WMS IV), according to age. The General Memory Score (GMS-7) was the primary outcome.Results: Thirty-seven patients were available for assessment at 7-years post-injury. Mean GMS-7 was in the low average range (M=84.9, SD=12.1). Lower GMS-7 was significantly associated with markers of higher injury severity, such as length of coma. One-year post-injury functional and disability outcomes explained 74% of the variance of GMS-7. Concurrent intellectual ability and type of ongoing education correlated strongly with GMS-7. Age at injury and parental education were not associated with memory outcome.
Conclusions:Memory functioning is variable but often strongly impaired several years after severe pediatric TBI, and is mostly related to injury severity, functional outcomes measured 1year post-injury, and concomitant cognitive and educational outcomes. GMS-7 was lower at 7years than one-year post-injury, supporting the importance of long term follow-up.