Recent Advances in Pediatric Concussion and Mild Traumatic Brain Injury

Does new research address persistent questions since the publication of the CDC's 2018 pediatric mTBI guideline

BACKGROUND AND OBJECTIVE

Due to the potential debilitating sequelae following pediatric mTBI, the CDC published the Guideline on the Diagnosis and Management of mTBI Among Children in 2018. However, the guideline identified several key gaps in our clinical knowledge to support several clinical recommendations. The objective of this review is to evaluate if subsequent research has addressed these gaps in clinical practice recommendations.

METHODS

A literature review was conducted in PubMed using keywords from the CDC guidelines for the years of July 2015-January 2021. Articles were screened by title and abstract so only studies with children < 18 years of age and those focusing on mTBI were included.

RESULTS

A total of 531 articles were identified after screening. Forty-three percent was prospective; 24% were case reports, literature reviews, comments, or protocols; 19% were retrospective, 7% were cross-sectional, 4% were RCTs, and 4% were systematic reviews/meta-analyses. Forty-nine percent focused on diagnosis, 17% on prognosis, and 34% on treatment. The four most published topics were neuropsychological tools (28%), risk factors for intracranial injury and computed tomography (11%), cognitive/physical rest (11%), and return to school (10%).

CONCLUSION

Since the release of the 2018 CDC guidelines, the majority of publications addressing pediatric mTBI have been prospective studies evaluating the clinical application of neuropsychological tools in concussion management. While these studies do address several of the clinical gaps noted by the CDC regarding the diagnosis and prognosis of pediatric mTBI, there remains a lack of high-quality studies focused on improving pediatric concussion treatment and outcomes.

Evaluation of Quantitative Pupillometry in Acute Postinjury Pediatric Concussion

BACKGROUND

Although millions of children sustain concussions each year, a rapid and objective test for concussion has remained elusive. The aim of this study was to investigate quantitative pupillometry in pediatric patients in the acute, postinjury setting.

METHODS

This was a prospective case-control study of concussed patients presenting to the emergency department within 72 hours of injury. Pupillary measurements were gathered using NeurOptics' PLR 3000; evaluation included a symptom checklist and neurocognitive assessment. Data were analyzed using descriptive statistics and regression models.

RESULTS

A total of 126 participants were enrolled. One significant difference in pupillometry between concussed and control participants was found: left minimum pupil diameter in 12- to 18 year-olds (P = 0.02). Models demonstrating odds of a concussion revealed significant associations for time to 75% recovery (T75) of the left pupil in five- to 11-year-olds and average dilation velocity of the left pupil in 12- to 18-year-olds (P = 0.03 and 0.02 respectively). Models predicting symptom improvement showed one significant association: percent change of the right pupil in five-to-11-year-olds (P = 0.02). Models predicting neurocognitive improvement in 12- to 18-year-olds demonstrated significant association in T75 in the left pupil for visual memory, visual motor processing speed, and reaction time (P = 0.002, P = 0.04, P = 0.04).

CONCLUSIONS

The limited statistically significant associations found in this study suggest that pupillometry may not be useful in pediatrics in the acute postinjury setting for either the diagnosis of concussion or to stratify risk for prolonged recovery.

Differences in concussion knowledge between parents and their children in a multidisciplinary concussion clinic sample

PURPOSE

This study assessed concussion knowledge in concussed youth and parents treated at a multi-disciplinary concussion center.

METHODS

Youth (n = 50) and parents (n = 36) were approached at the beginning of a clinical visit. Participants completed a 22-item, previously published concussion knowledge survey before the visit.

RESULTS

Responses were compared with previously collected, published data from adolescents in a high school setting (n = 500). The patient group was divided into those with one (n = 23) vs. two or more concussions (n = 27). Chi-square analyses compared total correct responses between youth, parents, and the high school sample. T-tests assessed differences in knowledge based on prior concussions, age, and gender. All groups showed high accuracy for return-to-play guidelines (>90%) and similar knowledge of concussion-related symptoms (72.3% vs. 68.6%). Significant knowledge gaps about diagnosis, neurological consequences, and long-term risks were present across groups (19% to 68% accuracy). The patient group more often misattributed neck symptoms to concussion (X2  < 0.005). Prior concussion and gender were not significant predictors of concussion knowledge (p > 0.5).

CONCLUSION

Community and clinically-based educational techniques may not be effectively communicating knowledge about concussion diagnosis, symptoms, long-term risks, and neurological implications of concussion. Educational tools need to be tailored to specific settings and populations.

Considerations for Pediatric Retirement from Athletics Following Repetitive Concussive Traumatic Brain Injury: Incorporating the Right to an Open Future

Guidance regarding the decision to remove an adolescent from athletic competition immediately following an acute concussive injury and the safe return of play in the short term is widely accepted and supported by clinical evidence, local institutional policies, and state and federal laws. There is considerably less guidance regarding the decision to permanently retire an adolescent athlete for medical reasons due to concussive injuries. In this article, we discuss the clinical and non-clinical considerations that should guide clinicians in discussions regarding the adolescent athlete’s permanent retirement by emphasizing the ethical obligation to protect the child’s right to an open future as possibly determinative in otherwise ambiguous cases.

Pediatric Head Injuries in Summer Camps

Summer camps have a unique supervisory environment that may lead to increased head injury risk for children. The epidemiology of head injuries in camps is unclear. We partnered with CampDoc.com to review head injury reports from camp nurses in 2016 from 197 camps in 36 states. A total of 4290 (92%) reports were coded as definite head injuries, 47% (n = 2002) in female campers, with median camper age of 10 years. Head injury severity was coded as mild (94%, n = 4040), moderate (6%, n = 248), or severe (<1%, n = 2). Only 3% (n = 134) were medically evaluated, and 29% (n = 1221) were sports-related. Head injuries were categorized as definite (3%, n = 137) and probable (13%, n = 572) concussions, with 39% (n = 277) being sports-related and 61% (n = 83) of definite concussions incurred by female campers. Summer camps, while an important location of head injury risk, appear to be a safe environment for youth.

Paediatric traumatic brain injury

PURPOSE OF REVIEW

To provide a summary of recent developments in the field of paediatric traumatic brain injury (TBI).

RECENT FINDINGS

The epidemiology of paediatric TBI with falling rates of severe TBI, and increasing presentations of apparently minor TBI. There is growing interest in the pathophysiology and outcomes of concussion in children, and detection of 'significant' injury, arising from concern about risks of long-term chronic traumatic encephalopathy. The role of decompressive craniectomy in children is still clarifying.

SUMMARY

Paediatric TBI remains a major public health issue.