Developmental Outcomes Following Abusive Head Trauma in Infancy: A Systematic Review

Developmental outcomes in abusive head trauma

Abusive head trauma (AHT) is associated with high mortality and poorer outcomes compared to accidental head injuries. The short and long-term developmental outcomes for AHT are not well identified. Variability in outcome measures, small sample sizes, difficulty in measuring domain-specific developmental skills, co-existence of comorbidities, genetic and environmental factors and high attrition rates all contribute to the challenges on providing data in this area. The objective of this article is to review the scientific literature on the developmental outcomes of AHT, highlighting factors that affect outcomes, the available assessment tools, and short and long-term developmental outcomes, recommended follow up, societal costs, and future opportunities for research. Authors searched OVID Medline and PubMed for articles published between 2013 and 2023 using the terms "abuse", "craniocerebral trauma" and "development". Fifty-five records were included for this review. The data shows that injuries sustained from AHT result in a spectrum of outcomes ranging from normal development to death. There are more than 100 outcome assessment tools limiting the ability to compare studies. More than half of patients are left with disabilities post discharge. Gross motor and cognition/academics are the 2 most common domains studied. Advancement in surgical and neurocritical care management has influenced AHT outcomes. Close long-term follow up is recommended to maximize each child's developmental potential, irrespective of the presence of disability at discharge. We suggest that future research should focus on adopting a consistent diagnostic and assessment approach and explore the social environmental factors that can affect recovery.

New Functional Impairment After Hospital Discharge by Traumatic Brain Injury Mechanism in Younger Than 3 Years Old Admitted to the PICU in a Single Center Retrospective Study

OBJECTIVES

Children who suffer traumatic brain injury (TBI) are at high risk of morbidity and mortality. We hypothesized that in patients with TBI, the abusive head trauma (AHT) mechanism vs. accidental TBI (aTBI) would be associated with higher frequency of new functional impairment between baseline and later follow-up.

DESIGN

Retrospective single center cohort study.

SETTING AND PATIENTS

Children younger than 3 years old admitted with TBI to the PICU at a level 1 trauma center between 2014 and 2019.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Patient characteristics, TBI mechanism, and Functional Status Scale (FSS) scores at baseline, hospital discharge, short-term (median, 10 mo [interquartile range 3-12 mo]), and long-term (median, 4 yr [3-6 yr]) postdischarge were abstracted from the electronic health record. New impairment was defined as an increase in FSS greater than 1 from baseline. Patients who died were assigned the highest score (30). Multivariable logistic regression was performed to determine the association between TBI mechanism with new impairment. Over 6 years, there were 460 TBI children (170 AHT, 290 aTBI), of which 13 with AHT and four with aTBI died. Frequency of new impairment by follow-up interval, in AHT vs. aTBI patients, were as follows: hospital discharge (42/157 [27%] vs. 27/286 [9%]; p < 0.001), short-term (42/153 [27%] vs. 26/259 [10%]; p < 0.001), and long-term (32/114 [28%] vs. 18/178 [10%]; p < 0.001). Sensory, communication, and motor domains were worse in AHT patients at the short- and long-term timepoint. On multivariable analysis, AHT mechanism was associated with greater odds (odds ratio [95% CI]) of poor outcome (death and new impairment) at hospital discharge (4.4 [2.2-8.9]), short-term (2.7 [1.5-4.9]), and long-term timepoints (2.4 [1.2-4.8]; p < 0.05).

CONCLUSIONS

In patients younger than 3 years old admitted to the PICU after TBI, the AHT mechanism-vs. aTBI-is associated with greater odds of poor outcome in the follow-up period through to ~5 years postdischarge. New impairment occurred in multiple domains and only AHT patients further declined in FSS over time.