Recovery trajectories of IQ after pediatric TBI: A latent class growth modeling analysis.

OBJECTIVE: To identify latent trajectories of IQ over time after pediatric traumatic brain injury (TBI) and examine the predictive value of risk factors within and across recovery trajectories. METHOD: 206 children ages 3-7 years at injury were included: 87 TBI (23 severe, 21 moderate, 43 complicated mild) and 119 orthopedic injury (OI). We administered intelligence tests shortly after injury (1½ months), 12 months, and 6.8 years postinjury. Latent class growth modeling was used to identify latent subgroups. Separate models examined verbal and nonverbal IQ recovery trajectories following TBI versus OI. Variables included: age at injury, sex, race, socioeconomic status, injury severity, quality of the home environment, family functioning, and parenting style. RESULTS: Both the TBI and OI analyses yielded different growth models for nonverbal (k = 3) and verbal IQ (k = 3). Although all models resulted in 3 latent classes (below average, average, and aboveaverage performance); trajectory shapes, contributors to class membership, and performance within each class varied by injury group and IQ domain. TBI severity was associated with class membership for nonverbal IQ, with less severe injuries associated with higher IQ scores; however, TBI severity did not influence verbal IQ class membership. Parenting style had a more prominent effect on verbal and nonverbal IQ within the TBI than OI trajectories. CONCLUSIONS: Findings suggest TBI severity is related to recovery trajectories for nonverbal but not verbal IQ and parenting style has stronger effects on recovery in TBI than OI. Results highlight the importance of parental factors on long-term recovery after TBI.

Understanding the relationship between family functioning and health-related quality of life in very young children with moderate-to-severe TBI.

Objective: To investigate the relationship of pre-injury and concurrent family functioning with health-related quality of life (HR QoL) following traumatic brain injury (TBI) or orthopedic injury (OI) in very young children. Method: Prospective enrollment of children ages 0-4 years who presented to the emergency department after sustaining either acute TBI or OI. This is a sub-analysis of children who completed at least one post-injury follow-up visit. At time of study enrollment, parents rated pre-injury family functioning (Family Assessment Device-General Functioning Scale) and the child's HR QoL (Pediatric Quality of Life InventoryTM). Family functioning and HR QoL were assessed at one and six months post-injury. Mixed models were used to examine family functioning as a moderator of a child's HR QoL following injury. Results: Data were analyzed for 42 children with TBI and 24 children with OI. For both groups, better pre-injury family functioning was significantly associated with better HR QoL over time. A triple interaction of injury type by time since injury by concurrent family functioning indicated that children with TBI and poor family functioning had significantly worse HR QoL at six months post-injury relative to other groups. Conclusion: Despite a small sample size, current results underscore the importance of family functioning to recovery following early childhood TBI and support the need for continued research and development of interventions to improve outcomes in this population.

A Survivor's Journey: Preliminary efficacy of an online problem-solving therapy for survivors of pediatric brain tumor.

BACKGROUND: Although pediatric brain tumor survivors are at high risk for a variety of psychosocial and neurocognitive late effects, there are few evidence-based interventions to address their needs. The purpose of this study was to test the efficacy of an online problem-solving intervention on improving the quality of life and executive dysfunction among adolescent and young adult brain tumor survivors. PROCEDURE: A Survivor's Journey was adapted from a similar intervention for survivors of traumatic brain injuries, and involved self-guided web modules providing training in problem-solving as a tool for coping with everyday challenges, as well as weekly teleconferences with a trained therapist. Survivors (n = 19) between the ages of 13 and 25, and their caregivers, completed standardized measures of their emotional and behavioral functioning, executive functioning, and quality of life before and after the 12- to 16-week intervention. RESULTS: Participation in the intervention led to significant improvements in self-reported overall (Mpre  = 62.03, SDpre  = 17.67, Mpost  = 71.97, SDpost  = 16.75; d = 0.58, P = 0.01) and physical quality of life (Mpre  = 63.13, SDpre  = 21.88, Mpost  = 75.00, SDpost  = 21.33; d = 0.55, P < 0.01) as well as parent-reported emotional quality of life (Mpre  = 65.00, SDpre  = 28.72, Mpost  = 76.15, SDpost  = 23.47; d = 0.43, P = 0.03). Greater improvement was noted in those who were diagnosed before the age of seven and those with average or above average estimated IQs. Current age did not moderate outcomes. CONCLUSIONS: Online problem-solving therapy may be efficacious in improving pediatric brain tumor survivors' quality of life; however, further research with a comparison group is needed. Online interventions such as Survivor's Journey may decrease barriers to evidence-based psychosocial care for brain tumor survivors.

Influence of Methylphenidate on Long-Term Neuropsychological and Everyday Executive Functioning After Traumatic Brain Injury in Children with Secondary Attention Problems.

OBJECTIVE: To investigate the effects of methylphenidate on long-term executive and neuropsychological functioning in children with attention problems following TBI, as well as the relationship between methylphenidate associated changes in lab-based neuropsychological measures of attentional control, processing speed, and executive functioning and parent- or self-report measures of everyday executive functioning. METHOD: 26 children aged 6-17 years, who were hospitalized for moderate-to-severe blunt head trauma 6 or more months previously, were recruited from a large children's hospital medical center. Participants were randomized into a double-masked, placebo-controlled cross-over clinical trial. Participants completed a comprehensive neuropsychological battery and parent- and self-report ratings of everyday executive functioning at baseline, and at 4 weeks and 8 weeks following upward titration of medication to an optimal dose or while administered a placebo. RESULTS: Methylphenidate was associated with significant improvements in processing speed, sustained attention, and both lab-based and everyday executive functioning. Significant treatment-by-period interactions were found on a task of sustained attention. Participants who were randomized to the methylphenidate condition for the first treatment period demonstrated random or erratic responding, with slower and more variable response times when given placebo during the second period. CONCLUSION: Results indicate that methylphenidate treatment is associated with positive outcomes in processing speed, sustained attention, and both lab-based and everyday measures of executive functioning compared to placebo group. Additionally, results suggest sustained attention worsens when discontinuing medication. (JINS, 2019, 25, 740-749).

Impact of Multi-Night Experimentally Induced Short Sleep on Adolescent Performance in a Simulated Classroom.

Study Objectives: Investigate whether a realistic "dose" of shortened sleep, relative to a well-rested state, causes a decline in adolescents' learning and an increase in inattentive and sleepy behaviors in a simulated classroom setting. Methods: Eighty-seven healthy 14.0- to 16.9-year olds underwent a 3-week sleep manipulation protocol, including two 5-night sleep manipulation conditions presented in a randomly counterbalanced within-subjects cross-over design. Wake time was held constant. Bedtimes were set to induce Short Sleep (SS; 6.5 hours in bed) versus Healthy Sleep (HS; 10 hours in bed). During the morning at the end of each condition, participants underwent a simulated classroom procedure in which they viewed lecture-based educational videotapes and completed relevant quizzes. Their behaviors in the simulated classroom were later coded by condition-blind raters for evidence of inattention and sleepiness. Results: Adolescents had a longer average sleep period during HS (9.1 hours) than SS (6.5 hours). Compared to scores during HS, adolescents scored significantly lower on the quiz, showed more behaviors suggestive of inattention and sleepiness in the simulated classroom, and were reported by adolescents themselves and by their parents to be more inattentive and sleepy during SS. However, the impact of the manipulation on quiz scores was not mediated by changes in attention or sleepiness. Conclusions: Although effect sizes were modest, these findings suggest that previously-reported correlations between sleep duration and academic performance reflect true cause-effect relationships. Findings add to the growing evidence that the chronically shortened sleep experienced by many adolescents on school nights adversely impacts their functioning and health.