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Updated: Jun 25, 2026
Modified Mouse Model of Repetitive Mild Traumatic Brain Injury Incorporating Thinned-Skull Window and Fluid Percussion
Published on: April 19, 2024
Long-term behavioural outcomes of pre-school mild traumatic brain injury
A McKinlay1, R C Grace, L J Horwood
1Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand. audrey.mckinlay@canterbury.ac.nz
Insights
Mild traumatic brain injury (MTBI) in preschoolers can lead to lasting behavioral issues. More severe injuries requiring hospitalization showed greater long-term attention and conduct problems in children.
Area of Science:
- Pediatric neurology
- Developmental psychology
- Epidemiology
Background:
- Mild traumatic brain injury (MTBI) is a significant concern in preschool-aged children.
- Long-term outcomes of pediatric MTBI are not well-understood.
- Preschool years represent a critical developmental period, making injuries during this time potentially impactful.
Purpose of the Study:
- To investigate the long-term behavioral effects of preschool-years MTBI.
- To differentiate outcomes based on the severity of MTBI (outpatient vs. inpatient).
- To identify potential developmental trajectories following pediatric head injuries.
Main Methods:
- Utilized prospective data from a birth cohort epidemiological study.
- Categorized MTBI cases into outpatient and inpatient groups, with a non-injured control group.
- Collected yearly mother/teacher behavior ratings from ages 7 to 13.
Main Results:
- Inpatient MTBI cases exhibited significant behavioral deficits compared to outpatient MTBI and controls.
- Deficits were observed in behaviors related to attention deficit/hyperactivity disorder and oppositional defiant/conduct disorder.
- The inpatient group showed a trend of increasing behavioral deficits from age 7 to 13.
Conclusions:
- More severe preschool MTBI is associated with persistent negative psychosocial development.
- Preschool children are particularly vulnerable to the long-term effects of MTBI.
- Early identification and intervention for high-risk pediatric MTBI cases are crucial.
Abstract:
Abstract Background Mild traumatic brain injury (MTBI) is a leading cause of injury for children during their pre-school years. However, there is little information regarding the long-term outcomes of these injuries. Method We used fully prospective data from an epidemiological study of a birth cohort to examine behavioural effects associated with MTBI during the pre-school years. Cases of confirmed MTBI were divided into two groups, those that had received outpatient medical attention, and those that had been admitted to hospital for a brief period of observation (inpatient cases). The remainder of the cohort served as a reference control group. Results Mother/teacher ratings for behaviours associated with attention deficit/hyperactivity disorder and oppositional defiant/conduct disorder, obtained yearly from age 7 to 13, revealed evidence of deficits after inpatient MTBI (n = 21), relative to more minor outpatient injury MTBI (n = 55) and the reference control group (n = 852). For the inpatient group there was evidence of increasing deficits over years 7-13. Conclusions More severe pre-school MTBI may be associated with persistent negative effects in terms of psychosocial development. The vulnerability of pre-school children to MTBI signals a pressing need to identify high-risk cases that may benefit from monitoring and early intervention.
