Investigating social functioning after early mild TBI: the quality of parent-child interactions

Behaviour outcomes three months after mild TBI in preschool children

This study examined parents' report of behaviour in preschoolers after a mild traumatic brain injury (mTBI), compared the proportion of preschoolers with elevated behaviour ratings between the mTBI and limb injury (LI) groups, and explored injury, premorbid child, and parent variables that may be associated with parents' report of behaviour at three months post-injury. Children aged 2-5 years with a mTBI (n = 13) or mild LI (n = 6) were recruited from the emergency department. Behaviour was assessed using the Child Behaviour Checklist. Preliminary findings showed that post-injury behaviour ratings remained in the normal range. The mTBI group had higher scores than the LI group at three months post-injury in terms of sleep; however, this may have been pre-existing. Two children with mTBI received borderline-clinically significant ratings on diagnostic-level anxiety problems at the three-month follow-up, while none of the limb-injured controls obtained elevated behaviour ratings. Parent-rated post-injury behaviour was significantly associated with premorbid child functioning and parental stress, which needs to be explored in greater detail using larger preschool mTBI samples.

Further recommendations of the International Paediatric Brain Injury Society (IPBIS) for the post-acute rehabilitation of children with acquired brain injury

BACKGROUND

Paediatric acquired brain injury is a life-long condition which impacts on all facets of the individual's lived experience. The existing evidence base continues to expand and new fields of enquiry are established as clinicians and researchers uncover the extent of these impacts.

PRIMARY OBJECTIVE

To add to recommendations described in the International Paediatric Brain Injury Society's 2016 paper on post-acute care for children with acquired brain injury and highlight new areas of enquiry.

REVIEW OF INFORMATION

Recommendations were made based on the opinions of a group of experienced international clinicians and researchers who are current or past members of the board of directors of the International Paediatric Brain Injury Society. The importance of each recommendation was agreed upon by means of group consensus.

OUTCOMES

This update gives new consideration to areas of study including injuries which occur in pre-school children, young people in the military, medical referral, young offenders and the use of technology in rehabilitation.

The Influence of the Family Functioning and Social Relationships on Child Participation After Traumatic Brain Injury

PURPOSE

To describe the relationship amongst child and family characteristics (e.g. social relationships, family functioning) and child participation after traumatic brain injury (TBI) an average of 2.65 years post-TBI (SD = 2.12).

METHOD

Cross-sectional, secondary analysis of data collected as part of a larger research project.

RESULTS

N = 44 children with TBI. Analysis revealed statistically significant correlations between child participation, family functioning, and child characteristics.

CONCLUSIONS

School-aged children with TBI might experience chronic participation restrictions, associated with challenges in family functioning. Professionals can support children with TBI and their families through follow-up services that include a focus on family-based interventions to better support long-term outcomes for this population.

How Does Trait Mindfulness Weaken the Effects of Risk Factors for Adolescent Smartphone Addiction? A Moderated Mediation Model

As a psychological resource of individuals, trait mindfulness is valuable in facilitating individuals to maintain attention intensity, increase efficiency, and alleviate stress and depression. It can also buffer against the risk factors of addictive behaviors. However, applied research combining trait mindfulness and smartphone addiction with the use of psychological resources is relatively scarce and needs further examination. We constructed a moderated mediation model based on compensatory Internet use and conservation of resources theory (OCR) to examine the effects of social anxiety on adolescent smartphone addiction and to describe how trait mindfulness "works" and "in what contexts it works better". We analyzed 1570 adolescent subjects through a multistage stratified sampling method. Our findings revealed that social anxiety positively predicted smartphone addiction, while trait mindfulness was negatively associated with it. Furthermore, trait mindfulness mitigated smartphone addiction by reducing social anxiety, suggesting a mediating effect of social anxiety on this relationship. Meanwhile, the mediating effect was more pronounced among adolescents with left-behind experience; we found that left-behind experience partially moderated the relationship between social anxiety and smartphone addiction. Adolescents with left-behind experience had more significant compensatory media use with a higher risk of smartphone addiction. This study highlights the potential protective role of trait mindfulness in the development and maintenance of adolescent smartphone addiction. It provides empirical support for applying resource conservation theory and stress buffering theory in this context.

History of pediatric TBI hospitalization and current child-parent relationship quality in China

BACKGROUND

Long-term child-parent relationship quality following hospitalization for pediatric traumatic brain injury (TBI) remains poorly understood.

OBJECTIVE

We tested whether current child-parent conflict and closeness were related to the children's history of TBI-related experiences and contemporary child/family characteristics.

METHODS

The sample included 202 Chinese children (Boys: 60.4%) with a history of hospitalization for TBI. On average, the children were 11.2 years old (SD = 1.59) and sustained TBI at 8.5 years old (SD = 1.6). TBI-related data were obtained from hospital medical records. Parents provided data on child-parent closeness, child-parent conflict, and parental efficacy 2-4 years (M = 2.7, SD = 0.7) after discharge.

RESULTS

Forty-nine children (24.3%) had mild TBI, 139 (68.8%) had moderate TBI, and 14 (6.9%) had severe TBI. Surgical intervention occurred among 128 (63.4%) of the 202 children. Contemporaneous child and family characteristics explained 19% of the variance, history of surgery, length of hospitalization, and recovery status explained another 7%, and the interaction between length of hospitalization and parental efficacy explained another 4% in child-parent conflict. Contemporaneous child and family characteristics explained 29% of the variance, and TBI-related variables explained another 2% in child-parent closeness.

CONCLUSION

Post-TBI child-parent relationship was more associated with child/family characteristics than with TBI variables. Practitioners and families should be aware of the long-term challenges to child-parent relationship following hospitalization for pediatric TBI.

Emergency department visits for mild traumatic brain injury in early childhood

BACKGROUND

Brain injury during early childhood may disrupt key periods of neurodevelopment. Most research regarding mild traumatic brain injury (mTBI) has focused on school-age children. We sought to characterize the incidence and healthcare utilization for mTBI in young children presenting to U.S. emergency departments (ED).

METHODS

The Nationwide Emergency Department Sample was queried for children age 0-6 years with mTBI from 2016 to 2019. Patients were excluded for focal or diffuse TBI, drowning or abuse mechanism, death in the ED or hospital, Injury Severity Score > 15, neurosurgical intervention, intubation, or blood product transfusion.

RESULTS

National estimates included 1,372,291 patient visits: 63.5% were two years or younger, 57.5% were male, and 69.4% were injured in falls. The most common head injury diagnosis was "unspecified injury of head" (83%); this diagnosis decreased in frequency as age increased, in favor of a concussion diagnosis. Most patients were seen at low pediatric volume EDs (64.5%) and non-children's hospital EDs (86.2%), and 64.9% were seen at a non-teaching hospital. Over 98% were treated in the ED and discharged home. Computed tomography of the head and cervical spine were performed in 18.7% and 1.6% of patients, respectively, less often at children's hospitals (OR = 0.55, 95%CI = 0.41-0.76 for head and OR = 0.19, 95%CI = 0.11-0.34 for cervical spine). ED charges resulted in $540-681 million annually, and more than half of patients utilized Medicaid.

CONCLUSIONS

Early childhood mTBI is prevalent and results in high financial burden in the U.S. There is wide variation in diagnostic coding and computed tomography scanning amongst EDs. More focused research is needed to identify optimal diagnostic tools and management strategies.

Examining the Latent Dimensions of Social Anxiety Disorder

While the body of literature has investigated the latent dimensions of Social Anxiety Disorder (SAD), only few have directly anchored in the DSM-5 SAD symptoms. Similarly, a continuing issue on measuring mental health disorders pertains to whether a symptom's frequency, intensity, or both, are appropriate and sufficient indicators of severity. To address this gap, the present study developed and validated a DSM-5-based measurement tool, the Social Anxiety Symptom Severity Inventory (SASSI), which assesses both the intensity (intensity of disturbance) and frequency (frequency of occurrence) of SAD symptoms. In study 1 (n = 6458, college students), the results revealed a two-factor structure using exploratory structural equation modeling. In study 2 (n = 425, left-behind emerging adults), confirmatory factor analysis, measurement invariance testing, and latent class analysis were used. Findings demonstrated the importance of using both frequency and intensity of symptoms in assessing SAD severity. Moreover, a five-class solution best fitted the sample. Studies 1 and 2 demonstrated the good psychometric properties of SASSI and filled an important gap among available measures in assessing SAD severity through symptom frequency and intensity.

Discrepancies between mother and father ratings of child behavior after early mild traumatic brain injury

Mild traumatic brain injuries (mTBI) are highly prevalent during early childhood and can lead to behavioral difficulties. Parent report questionnaires are widely used to assess children's behavior, but they are subject to parental bias. The aim of this study was to investigate parental discrepancies in internalized and externalized behavior ratings of children who sustain mTBI in early childhood (i.e., between 18 and 60 months) and to determine if parenting stress or family burden related to the injury contribute to parental discrepancies. Mothers and fathers of 85 children with mTBI, 58 orthopedic injured (OI), and 82 typically developing children (TDC) completed the Child Behavior Checklist 6 months after the injury. The primary caregiver completed the Parental Distress subscale of the Parenting Stress Index and the Family Burden of Injury Interview. Mothers reported more internalized and externalized behavior problems than fathers in the mTBI group. No group difference was found in the OI or TDC groups. Neither parenting stress nor family burden related to the injury predicted discrepancies in behavior ratings. Mothers' and fathers' perceptions of behavior after their young child sustains mTBI appear to differ, suggesting that both parents' views are useful in understanding outcome. This difference was not found in either of the comparison groups indicating that factors related to mTBI may underlie the rating discrepancies.

Social Functioning and Autistic Behaviors in Youth Following Acquired Brain Injury

Children and adolescents who survive the pediatric intensive care unit (PICU) with an acquired brain injury (ABI) often demonstrate a variety of physical, cognitive, emotional/behavioral, and social sequelae termed post-intensive care syndrome (PICS). Social communication and interaction challenges have also been observed clinically, and there is growing literature documenting these occurrences in youth following ABI. The extent of these social changes varies among patients, and a subset of patients go on to exhibit social and behavioral profiles closely resembling those of autistic youth. We reviewed empirical research regarding social functioning in youth following ABI, as well as the overlap between individuals with ABI and autistic youth, published from January 2009 to August 2022 on PubMed and Scopus databases. Clinical case examples from a well-established post-PICU follow-up program are also provided to exemplify the complexity of this phenomenon.

Family Burden in Adolescents With Refractory Postconcussion Symptoms

OBJECTIVE

A significant minority of adolescents will have persistent postconcussion symptoms after an injury, potentially having a negative impact on family functioning. However, the reasons for a family's negative impact are not clearly understood. The objective of this study was to determine whether preinjury/demographic factors, injury characteristics, and/or worse postinjury symptoms are associated with higher levels of family stress in youth with refractory postconcussion symptoms.

SETTING

Pediatric refractory concussion clinic in a tertiary care center.

PARTICIPANTS

A total of 121 adolescents (13-18 years old) who were 1 to 12 months postconcussion.

MEASURES

Primary outcome was the mean stress rating on the Family Burden of Injury Interview (FBII), a 27-item questionnaire rating the impact on a family as a result of an injury. Preinjury/demographic and injury details were collected. Youth and their parents also completed measures of postconcussion symptoms, depression, anxiety, and behavioral problems.

RESULTS

Participants had a mean age of 16.0 years (SD = 1.3), of which, 65% identified as female, and were on an average 5.2 months (SD = 2.4) postconcussion. FBII ratings were not significantly correlated with demographics, preinjury functioning, injury severity, duration of persistent postconcussion problems (ie, time since injury), or self-reported postconcussion symptoms. Greater family burden (higher FBII ratings) significantly correlated with worse parent-reported postconcussion symptoms, worse psychological functioning (self-reported depression, parent-reported anxiety, and depression), and worse behavioral functioning (parent-reported conduct problems and peer problems). A multiple linear regression model revealed that parent-perceived postconcussion cognitive symptoms (β = .292, t = 2.56, P = .012) and parent-perceived peer problems (β = .263, t = 2.59, P = .011) were significantly associated with family burden ( F8,105 = 6.53; P < .001; R2 = 0.35).

CONCLUSION

Families of youth with refractory postconcussion symptoms can experience a negative impact. The severity of reported family burden in those with slow recovery from concussion was significantly associated with parents' perception of their child's cognitive symptoms and peer problems. These results could provide support for family-based interventions in this population.

The cortical silent period in schizophrenia: A systematic review and meta-analysis focusing on disease stage and antipsychotic medication

BACKGROUND

Although numerous studies reported some changes of cortical silent period (CSP), an indicator of gamma-aminobutyric acid (GABA) function in central nervous system, in schizophrenia patients, it has been unknown how the disease stage and antipsychotic medication affect CSP values.

METHODS

The present study conducted a systematic review of previous literature comparing CSP between schizophrenia patients and healthy subjects, and then performed meta-analysis on the effects of (1) the disease stage and (2) antipsychotics on CSP.

RESULTS

(1) In the comparison of the disease stage comprising a total of 17 reports, there was no significant difference in CSP between patients under drug-naïve first-episode psychoses and healthy controls, or between patients with antipsychotic medication and healthy controls. (2) In the comparison of the antipsychotic class, patients treated with clozapine were longer in CSP compared to healthy controls. Patients treated with olanzapine/quetiapine or with other type of antipsychotics were not different from healthy controls. Regarding other type of antipsychotics, the iteration analysis after leaving out one literature showed that patients were shorter in CSP than healthy controls.

CONCLUSION

The results showed that clozapine seems to surely prolong CSP, indicating the enhancement of GABA transmission via GABA_B receptors, suggesting the possible relationship between the CSP prolongation by clozapine and its high efficacy in psychopathology. The finding of shorter CSP in patients with other type of antipsychotics was distinct from clozapine/olanzapine/quetiapine, but was difficult to interpret since this group included a variety of transcranial magnetic stimulation (TMS) methodologies and patients' background.

Adverse childhood experiences and traumatic brain injury among adolescents: findings from the 2016-2018 National Survey of Children's Health

Exposure to adverse childhood experiences (ACEs) is a significant public health issue for youth. However, traumatic brain injury (TBI) has been almost entirely overlooked in the ACEs and health outcomes literature, which has largely focused on the significant mental and behavioral health impact of ACEs. The goal the current study is to examine the association between ACEs and TBI among a nationally representative sample of adolescents in the United States and the extent to which ADHD and conduct problems inform this association. To assess this relationship, we use a sample of 42,204 adolescents (ages 12-17 years) in the United States whose caregivers were surveyed during the three most recent cohorts (2016-2018) of the National Survey of Children's Health (NSCH). The results revealed a dose-response relationship between ACEs and TBI, even after accounting for an array of confounding variables. Findings also indicated that associations were of a greater magnitude among youth who are not sports-involved. Supplemental mediation analyses showed that ADHD and conduct problems attenuated associations between ACE exposure and TBI, but only in the absence of youth sports involvement. Given that both ACEs and TBI carry long-term consequences for health and well-being, the findings from this study draw attention to the need for early intervention and prevention programming (e.g. home visiting) that can reduce the prevalence of ACEs and a history of TBI among adolescents.

Application of Second-Order Growth Mixture Modeling (SO-GMM) to Longitudinal TBI Outcome Research: 15-year Trajectories of Life Satisfaction in Adolescents and Young Adults (AYA) as an Example

OBJECTIVE

To demonstrate the application of Second-Order Growth Mixture Modeling using life satisfaction among adolescents and young adults with TBI up to 15 years post-injury.

DESIGN

SO-GMM, a data-driven modeling approach that accounts for measurement errors, was adopted to uncover distinct growth trajectories of life satisfaction over 15 years post-injury. Membership in growth trajectories was then linked with baseline characteristics to understand the contributing factors to distinct growth over time.

SETTING

Traumatic Brain Injury Model System National Database PARTICIPANTS: 3,756 AYAs with TBI aged 16 - 25 (M_age=20.49, SD_age=2.66; 27.24% female) INTERVENTIONS: Not Applicable MAIN OUTCOME MEASURES: Satisfaction with Life Scale RESULTS: Four quadratic growth trajectories were identified: low-stable (16.6%) that had low initial life satisfaction and remained low over time; high-stable (49.3%) that had high life satisfaction at the baseline and stayed high over time; high-decreasing (15.8%) that started with high life satisfaction but decreased over time; and low-increasing (18.2%) that started with low life satisfaction but increased over time. Sex, race, pre-injury employment status, age, and FIM cognition were associated with group assignment.

CONCLUSION

This study applied SO-GMM to a national TBI database and identified four longitudinal trajectories of life satisfaction among AYAs with TBI. Findings provided data-driven evidence for development of future interventions that are tailored at both temporal and personalized levels for improved health outcomes among AYAs with TBI.

What About the Little Ones? Systematic Review of Cognitive and Behavioral Outcomes Following Early TBI

There is increasing empirical focus on the effects of early traumatic brain injuries (TBI; i.e., before the age of six years) on child development, but this literature has never been synthetized comprehensively. This systematic review aimed to document the cognitive, academic, behavioral, socio-affective, and adaptive consequences of early TBI. Four databases (Medline, PsycNET, CINAHL, PubMed) were systematically searched from 1990 to 2019 using key terms pertaining to TBI and early childhood. Of 12, 153 articles identified in the initial search, 43 were included. Children who sustain early TBI are at-risk for a range of difficulties, which are generally worse when injury is sustained at a younger age, injury severity is moderate to severe, and injury mechanisms are non-accidental. Early childhood is a sensitive period for the emergence and development of new skills and behaviors, and brain disruption during this time is not benign. Research, clinical management, intervention, and prevention efforts should be further developed with consideration of the unique characteristics of the early childhood period.

Quality of father-child relationships as a predictor of sleep developments during preschool years

Substantial developmental changes in sleep occur during the preschool period, but few studies have investigated the factors that forecast these developments. The aim of this study was to examine whether three aspects of father-child relationships in toddlerhood predicted individual differences in developmental patterns of change in five actigraphy-derived sleep variables during the preschool period (N = 67; sleep assessed yearly between 2 and 4 years). In a predominantly White and middle-to-higher income sample, paternal mind-mindedness and quality of father-child interactions were assessed during father-child free play at 18 months and fathers self-reported on their involvement in childrearing at age 2. Multilevel growth modeling revealed that children whose father made more mind-related comments during father-child interactions had a higher proportion of sleep taking place during nighttime as well as shorter daytime and total sleep duration at 2 years. This was, however, followed by a relative leveling off (i.e., less rapid change) of these sleep features between 2 and 4 years. Given previous studies documenting that nighttime sleep proportion increases while daytime and total sleep duration decrease during preschool years, the findings suggest that children who are exposed to more paternal mind-mindedness may reach more mature sleep patterns earlier in development.

Report of Early Childhood Traumatic Injury Observations & Symptoms: Preliminary Validation of an Observational Measure of Postconcussive Symptoms

OBJECTIVE

To report preliminary empirical data on a novel, developmentally appropriate, observational postconcussive symptoms inventory for infants, toddlers, and preschoolers.

SETTING

Emergency departments of 2 tertiary, urban pediatric hospitals.

PARTICIPANTS

Ninety-eight children (0-8 years of age; mean age at injury = 33.00, SD = 24.7 months) with mild traumatic brain injury (concussion) divided into younger (0-2 years) and older (3-8 years) age groups.

DESIGN

Observational study.

MAIN MEASURE

The Report of Early Childhood Traumatic Injury Observations & Symptoms (REACTIONS) documents 17 postconcussive symptoms representing observable manifestations thereof and was completed by parents in the acute (24-48 hours; n = 65), subacute (7-14 days; n = 78), and/or persistent phase (25-35 days; n = 72) post-mild traumatic brain injury.

RESULTS

Different patterns of postconcussive symptoms were reported by age group, with behavioral manifestations particularly salient in younger children. More children younger than 2 years had sleep and comfort-seeking symptoms at each of the 3 postinjury time points.

CONCLUSION

Postconcussive symptoms may manifest differently after mild traumatic brain injury sustained during early childhood. To fully understand and address their presence and evolution, developmentally sound measures such as the REACTIONS inventory are required.

Acute cognitive impairment after traumatic brain injury predicts the occurrence of brain atrophy patterns similar to those observed in Alzheimer's disease

Traumatic brain injuries (TBIs) are often followed by persistent structural brain alterations and by cognitive sequalae, including memory deficits, reduced neural processing speed, impaired social function, and decision-making difficulties. Although mild TBI (mTBI) is a risk factor for Alzheimer's disease (AD), the extent to which these conditions share patterns of macroscale neurodegeneration has not been quantified. Comparing such patterns can not only reveal how the neurodegenerative trajectories of TBI and AD are similar, but may also identify brain atrophy features which can be leveraged to prognosticate AD risk after TBI. The primary aim of this study is to systematically map how TBI affects white matter (WM) and gray matter (GM) properties in AD-analogous patterns. Our findings identify substantial similarities in the regional macroscale neurodegeneration patterns associated with mTBI and AD. In cerebral GM, such similarities are most extensive in brain areas involved in memory and executive function, such as the temporal poles and orbitofrontal cortices, respectively. Our results indicate that the spatial pattern of cerebral WM degradation observed in AD is broadly similar to the pattern of diffuse axonal injury observed in TBI, which frequently affects WM structures like the fornix, corpus callosum, and corona radiata. Using machine learning, we find that the severity of AD-like brain changes observed during the chronic stage of mTBI can be accurately prognosticated based on acute assessments of post-traumatic mild cognitive impairment. These findings suggest that acute post-traumatic cognitive impairment predicts the magnitude of AD-like brain atrophy, which is itself associated with AD risk.

Unravelling moral cognition in acquired brain injury: a scoping review

Background:

Acquired brain injury (ABI) is accompanied by impairments in social, emotional, cognitive and behavioural skills and highly prevalent in the population. Social and emotional skills are crucial for moral cognition, but the extent to which moral cognition contributes to social competence deficits in people with ABI is largely unclear.

Method:

To provide more insight on this topic, we conducted a scoping review according to the PRISMA guidelines. After screening 1269 articles that we obtained via PubMed and Scopus, we found 27 articles on moral cognition in ABI.

Results:

We encountered four important topics across these studies which include traumatic brain injury (TBI) versus non-TBI, the influence of the different approaches used to measure moral cognition in ABI, the role of age of onset and the role of location of the injury. Overall, evidence suggests that the earlier the brain damage occurred, the more this leads to impairments in moral cognitive functioning. The location of the injury furthermore seems to differentially affect the way impairments are manifested. Finally, we found that the use of different measurement approaches can heavily influence the interpretation of the impairment.

Conclusion:

We conclude that impairments in moral cognition in people with ABI are derived from a complex interplay between the age of onset, the location and the approach used to index moral cognition.

Theory of Mind after Pediatric Traumatic Brain Injury: A Scoping Review

This scoping review aims to synthesize existing literature regarding theory of mind (ToM) outcomes, the neuropathology associated with ToM outcomes, and the relationship between ToM outcomes and social functioning in children and adolescents with traumatic brain injury (TBI). We searched MEDLINE^® and PsycINFO databases to identify all literature that examined ToM following pediatric TBI until July 2019. A total of 29 articles met inclusion and exclusion criteria and were included in the results. These articles examined a variety of aspects of ToM, which could be broadly grouped into those focused on cognitive, cognitive-affective, and pragmatic factors. The existing literature suggests that children and adolescents with TBI, compared with their typically developing peers and peers with orthopedic injuries, are more likely to have deficits in ToM. The evidence further shows that the age at which brain injury occurs contributes to ToM disruption. Neuroimaging techniques have offered crucial insights into how TBI may impact ToM performance in children and adolescents. Finally, this review provides evidence that disruption in ToM plays a role in the difficulties in social functioning demonstrated by children and adolescents with TBI. Limitations and gaps in the existing literature warrant future research in this field.

Transactional Model of Parental Adjustment and Caregiving Burden Following a Children's Acquired Disability

OBJECTIVES

Pediatric-acquired disability is often a crossroads in the lives of children and their parents, as they set out to adjust to a new physical impairment. This longitudinal study examined associations between the severity of children's-acquired disability, their parents' caregiver burden and adjustment, and parents' perception of the children's adjustment over time.

METHODS

Participants were parents and medical staff of 140 children with acquired disability, aged 1-18, hospitalized in pediatric or rehabilitation departments. Data were collected about 1 month after diagnosis (T1) and about 4 months later (T2). Parents completed background information, caregiver burden, child, and parental adjustment questionnaires. Medical staff contributed the disability severity indices.

RESULTS

The severity of the child's disability was negatively associated with parents' adjustment and perception of the child's adjustment. Caregiver burden was positively associated with the severity of the disability, and negatively with parents' adjustment and perception of their child's adjustment, at both time points. Over time, the severity of the disability and caregiver burden decreased, and parents' adjustment and perception of the child's adjustment improved. At T2, parents' and children's adjustment were strongly associated.

CONCLUSIONS

The findings revealed the relationship between objective severity indices and caregiver burden. They suggest that parents' adjustment may affect their perception of the child's adjustment to disability, and emphasize the role of parental perceptions over time. Therefore, parents who are less likely to adjust effectively should be identified early on to facilitate professional intervention.

Delineating the Nature and Correlates of Social Dysfunction after Childhood Traumatic Brain Injury Using Common Data Elements: Evidence from an International Multi-Cohort Study

Although childhood traumatic brain injury (TBI) has been linked to heightened risk of impaired social skills and behavior, current evidence is weakened by small studies of variable methodological quality. To address these weaknesses, this international multi-cohort study involved synthesis of data from two large observational cohort studies of complicated mild-severe child TBI in Australia and North America. Both studies adopted a unified approach to data collection and coding procedures, providing the opportunity to merge datasets from multiple, well-characterized cohorts for which gold standard measures of social outcomes were collected during the chronic recovery phase. The study involved 218 children, including 33 children with severe TBI, 83 children with complicated mild-moderate TBI, 59 children with orthopedic injury, and 43 age- and sex-matched typically developing control children. All injured children were recruited from academic children's hospitals and underwent direct cognitive assessments including measures of theory of mind (ToM) at least 1-year post- injury. Parents rated their child's social adjustment using standardized measures of social skills, communication and behavior. Results showed a brain-injury specific effect on ToM abilities, such that children with both complicated mild to moderate and severe TBI displayed significantly poorer ToM than children without TBI. In mediator models, poorer ToM predicted poorer parent-rated self-direction and social skills, as well as more frequent behavioral symptoms. The ToM mediated the effect of severe TBI on parent ratings of communication and social skills, as well as on overall behavior symptoms. The findings suggest that deficits in ToM are evident across the spectrum of TBI severity and represent one mechanism linking severe child TBI to long-term social adjustment difficulties. The findings underscore the value of large-scale data harmonization projects to increase the quality of evidence regarding the outcomes of TBI. Clinical and scientific implications are discussed.

Kids' Outcomes And Long-term Abilities (KOALA): protocol for a prospective, longitudinal cohort study of mild traumatic brain injury in children 6 months to 6 years of age

INTRODUCTION

Mild traumatic brain injury (mTBI) is highly prevalent, especially in children under 6 years. However, little research focuses on the consequences of mTBI early in development. The objective of the Kids' Outcomes And Long-term Abilities (KOALA) study is to document the impact of early mTBI on children's motor, cognitive, social and behavioural functioning, as well as on quality of life, stress, sleep and brain integrity.

METHODS AND ANALYSES

KOALA is a prospective, multicentre, longitudinal cohort study of children aged 6 months to 6 years at the time of injury/recruitment. Children who sustain mTBI (n=150) or an orthopaedic injury (n=75) will be recruited from three paediatric emergency departments (PEDs), and compared with typically developing children (community controls, n=75). A comprehensive battery of prognostic and outcome measures will be collected in the PED, at 10 days, 1, 3 and 12 months postinjury. Biological measures, including measures of brain structure and function (magnetic resonance imaging, MRI), stress (hair cortisol), sleep (actigraphy) and genetics (saliva), will complement direct testing of function using developmental and neuropsychological measures and parent questionnaires. Group comparisons and predictive models will test the a priori hypotheses that, compared with children from the community or with orthopaedic injuries, children with mTBI will (1) display more postconcussive symptoms and exhibit poorer motor, cognitive, social and behavioural functioning; (2) show evidence of altered brain structure and function, poorer sleep and higher levels of stress hormones. A combination of child, injury, socioenvironmental and psychobiological factors are expected to predict behaviour and quality of life at 1, 3 and 12 months postinjury.

ETHICS AND DISSEMINATION

The KOALA study is approved by the Sainte-Justine University Hospital, McGill University Health Centre and University of Calgary Conjoint Health Research Ethics Boards. Parents of participants will provide written consent. Dissemination will occur through peer-reviewed journals and an integrated knowledge translation plan.

Brain-Derived Neurotrophic Factor Val66Met Polymorphism and Internalizing Behaviors after Early Mild Traumatic Brain Injury

Pediatric traumatic brain injury (TBI) can lead to adverse emotional, social, and behavioral consequences. However, outcome is difficult to predict due to significant individual variability, likely reflecting a complex interaction between injury- and child-related variables. Among these variables are genetically determined individual differences, which can modulate TBI outcome through their influence on neuroplasticity mechanisms. In this study, we examined the effect of Val66Met, a common polymorphism of the brain-derived neurotrophic factor gene known to be involved in neuroplasticity mechanisms, on behavioral symptoms of mild TBI (mTBI) sustained in early childhood. This work is part of a prospective, longitudinal cohort study of early TBI. The current sample consisted of 145 children between ages 18 and 60 months assigned to one of three participant groups: mild TBI, orthopedic injury, or typically developing children. Participants provided a saliva sample to detect the presence of the Val66Met polymorphism, and the Child Behavior Checklist was used to document the presence of behavioral symptoms at 6- and 18-months post-injury. Contrary to our initial hypothesis, at 6 months post-injury, non-carriers of the Val66Met polymorphism in the mTBI group presented significantly more internalizing symptoms (e.g., anxiety/depression and somatic complaints) than Val66Met carriers, who were similar to orthopedically injured and typically developing children. However, at 18 months post-injury, all children with mTBI presented more internalizing symptoms, independent of genotype. The results of the study provide evidence for a protective effect of the Val66Met polymorphism on internalizing behavior symptoms 6 months after early childhood mTBI.

Persistent Changes in Child Behavior After Early Mild Traumatic Brain Injury

OBJECTIVE

To document longitudinal changes in internalizing and externalizing behavioral symptoms after mild traumatic brain injury (mTBI) sustained in early childhood (i.e., between 18 and 60 months of age).

METHODS

Participants (N = 226) were recruited to one of three groups: children with mTBI, typically developing children and orthopedic injured children. The Child Behavior Checklist was used to document the presence of internalizing and externalizing behaviors at 6, 18, and 30 months postinjury. Linear mixed-model analyses were used to examine group effects on the trajectory of internalizing and externalizing behavioral manifestations over 30 months postinjury.

RESULTS

Children who sustain mTBI during the preschool period have higher rates of internalizing and externalizing behavioral symptoms at the initial assessment time point and these symptoms persist up to 30 months postinjury. Moreover, results indicate that for up to 18 months postinjury, significantly more children with mTBI present behavioral difficulties that may require some form of clinical attention (i.e., scores in the borderline or clinical range), than do their orthopedically injured and noninjured peers.

CONCLUSIONS

Sustaining mTBI early in life may lead to long-lasting behavioral changes in young children (i.e., at least 30 months). These changes are likely the product of a complex interplay between neurological and non-neurological factors, both contributing to generating and maintaining behavioral difficulties.

Factors contributing to parent-child interaction quality following mild traumatic brain injury in early childhood

There is emerging evidence that parent-child interactions are affected by early childhood traumatic brain injury (TBI). These findings are of functional importance when considering the high prevalence of TBI in early childhood alongside evidence that young children exposed to positive relationships with their parents early in life exhibit better social functioning concurrently and longitudinally. Given that the overall quality of parent-child interactions is the result of both parent and child emotional and behavioural dispositions, it remains unclear which parental or child-related factors contribute to the quality of interactions post-TBI. The aim of this study was to investigate the factors that contribute to the quality of parent-child interactions following early childhood TBI. The sample included 68 children (18-60 months at recruitment) with accidental, uncomplicated mild TBI (mTBI). The quality of parent-child interactions was assessed 6 months post-injury using the Mutually Responsive Orientation scale, an observational measure of the dyadic quality of parent-child exchanges. Potential contributing factors were assessed among parental factors (e.g., age, socioeconomic status, family burden, parental stress, marital satisfaction) and child-related factors (e.g., age, sex, symptoms, fatigue, adaptive/behavioural skills). Socioeconomic status, child post-concussive symptoms, and child sleep problems were found to be significant independent contributing factors to parent-child interactions six months post-injury. This study provides the first evidence that both parental and child factors relate to the quality of parent-child interactions following mTBI, thus contributing to a better understanding of the scope and complexity of factors that play a role in childrens' recovery.

Moral reasoning and decision-making in adolescents who sustain traumatic brain injury

Objective: Emerging evidence suggests that moral processes are disrupted by traumatic brain injury (TBI). The objective of this study was to explore moral reasoning (MR) and decision-making in adolescents with TBI, and to examine potential associations with global manifestations of social competence.Design: This retrospective, cross-sectional research design compared MR and decision-making in adolescents with mild TBI (n = 20), moderate-severe TBI (n = 23) and typically developing controls (n = 93).Methods: Participants completed a visual task of socio-moral reasoning (SoMoral) and the Index of Empathy for Children and Adolescents. Their parents completed questionnaires documenting their child's behavior (Child Behavior Checklist) and adaptive functioning (Adaptive Behavior Assessment System-Second Edition).Main results: Adolescents with both mild and moderate-severe TBI displayed more immature MR than typically developing peers. Participants with TBI also provided fewer socially adapted decisions. Closer inspection revealed that this difference was apparent only in the mild TBI group. No significant group differences were observed for empathy, behavior or adaptive skills.Conclusions: Sustaining TBI appears to affect adolescents' ability to provide mature moral justifications when faced with moral dilemmas representative of everyday social conflicts. These difficulties do not appear to be associated with behavior problems, reduced empathy, or adaptive functioning.

Executive Functions and Their Relation to Sleep Following Mild Traumatic Brain Injury in Preschoolers

OBJECTIVES

Traumatic brain injury (TBI) sustained during childhood is known to impact children's executive functioning. However, few studies have focused specifically on executive functioning after preschool TBI. TBI has also been associated with sleep disturbances, which are known to impair executive functions in healthy children. The aim of this study was to investigate executive functions in preschoolers with mild TBI, and to determine the role of sleep in the links between TBI and executive functioning.

METHODS

The sample was drawn from a longitudinal study and included 167 children, aged 18 to 60 months, divided into 2 groups: children with accidental mild TBI (n=84) and typically developing children (n=83). Children were assessed 6 months post-injury on executive function measures (inhibition and cognitive flexibility) and sleep measures (actigraphy data and parental rating of sleep problems).

RESULTS

The two groups did not differ in their executive abilities. However, relative to controls, children with mild TBI and shorter nighttime sleep duration or increased sleep problems exhibited poorer executive functions.

CONCLUSIONS

These results support a "double hazard" effect, whereby the combination of sleep disturbances and mild TBI results in poorer executive functions. The findings highlight the importance of assessing and monitoring the quality of sleep even after mild head injuries. Poor sleep may place children at risk for increased cognitive difficulties. (JINS, 2018, 24, 769-780).

Virtual Reality for Pediatric Traumatic Brain Injury Rehabilitation: A Systematic Review

Objective. Pediatric traumatic brain injury (TBI) is associated with physical and psychobehavioral impairment in children. Effective rehabilitation programs postinjury are critical for children with TBI. Virtual reality (VR) has been increasingly adopted for brain injury rehabilitation. However, scientific synthesis is lacking in evaluating its effectiveness in pediatric TBI rehabilitation. This article aimed to conduct a systematic review on the effectiveness of VR-based pediatric TBI rehabilitation. Methods. A systematic literature search was conducted in PubMed, PsycInfo, SCOPUS, CENTRAL, BioMed Central, CiNAHL, and Web of Science through November 2015. Personal libraries and relevant references supplemented the search. Two authors independently reviewed the abstracts and/or full text of 5824 articles. Data extraction and qualitative synthesis was conducted along with quantitative assessment of research quality by 2 authors. Results. A positive impact was found for VR-based interventions on children's physical rehabilitation post-TBI. The quality of research evidence was moderate, which largely suffered from small samples, lack of immersive VR experience, and lack of focus on socioemotional outcomes post-TBI. Conclusions. The present review identified positive effects of VR interventions for pediatric TBI rehabilitation especially in physical outcomes. Future research should include larger samples and broader post-TBI outcomes in children using VR-based interventions.

Caregiver-report of symptoms following traumatic brain injury in a small clinical sample of preschool-aged children

PURPOSE

Preschool-aged children have a high rate of traumatic brain injuries (TBI). Anecdotally, caregivers of young children describe symptoms not typically associated with TBI. The objective of this study was to preliminarily describe symptoms reported following TBI in an outpatient sample of preschool-aged children.

METHODS

Retrospective chart review was completed of the first specialty clinic visit by 28 children ages 3 through 5 years with TBI (32% mild, 50% moderate, 18% severe) to identify post-injury symptoms elicited by caregiver interview including querying of symptoms listed on the Acute Concussion Evaluation (ACE) plus an open-ended request to describe any other symptoms.

RESULTS

Visits occurred on average 38 days post-injury. Caregivers endorsed typical post-concussive symptoms, with headache being most common. In addition, caregivers described other symptoms not captured by the ACE which were grouped into the following categories: Appetite Changes, Behavioral Dysregulation, Decreased Engagement, Disrupted Sleep, Enuresis, Increased Dependence, and Stomachaches.

CONCLUSIONS

Caregivers of preschool-aged children with TBI endorse that young children experience many typical post-concussive symptoms but also a range of other symptoms which may not be typically associated with TBI. Additional work is needed to determine whether specialized evaluation tools and educational materials may be useful for this age group.

Predictors of Postdeployment Functioning in Combat-Exposed U.S. Military Veterans

Posttraumatic stress disorder (PTSD) and sequelae of mild traumatic brain injury (mTBI) are presumed to contribute to reintegration difficulties in combat-exposed veterans. Yet their relative impacts on postdeployment functioning are not well understood. The current study used structural equation modeling (SEM) to clarify the extent to which symptoms of internalizing disorders (e.g., depression, anxiety), mTBI symptoms, and cognitive performance are associated with functional impairment in 295 combat-exposed veterans. SEM results showed that internalizing symptoms most significantly predicted functional impairment (r = 0.72). Blast mTBI and cognitive performance were associated with internalizing (r = 0.24 and -0.25, respectively), but functional impairment was only modestly related to cognition (r = -0.17) and unrelated to mTBI. These results indicate that internalizing symptoms are the strongest predictor of functioning in trauma-exposed veterans, exceeding the effects of mTBI and cognitive performance. This evidence supports prioritizing interventions that target internalizing psychopathology to improve functioning in cases of co-occurring PTSD and mTBI.

Examining the Prospective Relationship between Family Affective Responsiveness and Theory of Mind in Chronic Paediatric Traumatic Brain Injury

Childhood and adolescence coincide with rapid structural and functional maturation of brain networks implicated in Theory of Mind (ToM); however, the impact of paediatric traumatic brain injury (TBI) on the development of these higher order skills is not well understood. ToM can be partitioned intoconative ToM, defined as the ability to understand how indirect speech acts involving irony and empathy are used to influence the mental or affective state of the listener; andaffective ToM, concerned with understanding that facial expressions are often used for social purposes to convey emotions that we want people to think we feel. In a sample of 84 children with mild-severe TBI and 40 typically developing controls, this study examined the effect of paediatric TBI on affective and conative ToM; and evaluated the respective contributions of injury-related factors (injury severity/lesion location) and non-injury-related environmental variables (socio-economic status (SES)/family functioning) to long-term ToM outcomes. Results showed that the poorest ToM outcomes were documented in association with mild-complicated and moderate TBI, rather than severe TBI. Lesion location and SES did not significantly contribute to conative or affective ToM. Post-injury family affective responsiveness was the strongest and most significant predictor of conative ToM. Results suggest that clinicians should exercise caution when prognosticating based on early clinical indicators, and that group and individual-level outcome prediction should incorporate assessment of a range of injury- and non-injury-related factors. Moreover, the affective quality of post-injury family interactions represents a potentially modifiable risk factor, and might be a useful target for family-centred interventions designed to optimise social cognitive outcomes after paediatric TBI.