A systematic review of the diagnostic accuracy of ocular signs in pediatric abusive head trauma

Fatal child abuse detected by systematic post-mortem fundus photograph in sudden death in infancy

In living children, the use of a wide field fundus camera such as RetCam is the gold standard practice to document retinal haemorrhages in suspected cases of abusive head trauma (AHT). In case of sudden unexpected death in infancy (SUDI), child abuse must be considered as a possible cause of death and an eye examination is required. However, no example of post-mortem fundus photograph (PMFP) of retinal haemorrhages related to AHT is yet available for clinicians.We report a SUDI case, with no external traumatic lesions or limb fractures, for which prompt PMFP showed retinal haemorrhages typical of AHT: child abuse was subsequently confirmed by the forensic investigation. We discuss why PMFP is a relevant screening test to detect retinal haemorrhages in the case of SUDI and why the use of the RetCam should be further investigated.

Ophthalmologic findings in abusive head trauma

A leading cause of death and disability in infancy is abusive head trauma (AHT) and there are common clinical signs that help to establish this diagnosis. Children diagnosed with AHT can have many ophthalmologic findings, including retinal hemorrhages, retinoschisis, subconjunctival hemorrhages, corneal injury, and globe rupture. If any such injuries are suspected, an ophthalmologic consultation, with indirect ophthalmoscopy, should be completed. In addition to a complete physical exam, a thorough history imaging, and lab work, should be obtained to investigate the etiology of ophthalmic pathology including accidental and systemic causes. In general, studies show that retinal hemorrhages that are multilayered, too numerous to count, and located from the posterior pole to the ora serrata are highly suspicious for abusive head trauma.

Managing the apparently blind child presenting in the first year of life: A review

Severe vision impairment and blindness in childhood have a significant health burden on the child, family and society. This review article seeks to provide a structured framework for managing the apparently blind child presenting in the first year of life, starting from a comprehensive history and examination. Different investigation modalities and the increasingly important role of genetics will also be described, in addition to common causes of severe vision impairment. Crucially, a systematic approach to the blind infant is key to correct diagnoses and timely management. Incorrect diagnoses can be costly to all involved, however it is important to note that diagnoses can change with ongoing follow-up and investigations. Furthermore, the modern age of ophthalmology requires a multi-disciplinary approach and close collaboration with specialists including paediatricians, neurologists and geneticists, in addition to rehabilitation and low vision services, to ensure the best care for these vulnerable infants.

Childhood maltreatment and health in the UK Biobank: triangulation of outcome-wide and polygenic risk score analyses

BACKGROUND

Childhood maltreatment is common globally and impacts morbidity, mortality, and well-being. Our understanding of its impact is constrained by key substantive and methodological limitations of extant research, including understudied physical health outcomes and bias due to unmeasured confounding. We address these limitations through a large-scale outcome-wide triangulation study.

METHODS

We performed two outcome-wide analyses (OWAs) in the UK Biobank. First, we examined the relationship between self-reported maltreatment exposure (number of maltreatment types, via Childhood Trauma Screener) and 414 outcomes in a sub-sample of 157,316 individuals using generalized linear models ("observational OWA"). Outcomes covered a broad range of health themes including health behaviors, cardiovascular disease, digestive health, socioeconomic status, and pain. Second, we examined the relationship between a polygenic risk score for maltreatment and 298 outcomes in a non-overlapping sample of 243,006 individuals ("genetic OWA"). We triangulated results across OWAs based on differing sources of bias.

RESULTS

Overall, 23.8% of the analytic sample for the observational OWA reported at least one maltreatment type. Of 298 outcomes examined in both OWAs, 25% were significant in both OWAs and concordant in the direction of association. Most of these were considered robust in the observational OWA according to sensitivity analyses and included outcomes such as marital separation (OR from observational OWA, ORo = 1.25 (95% CI: 1.21, 1.29); OR from genetic OWA, ORg = 1.06 (1.03, 1.08)), major diet changes due to illness (ORo = 1.27 (1.24, 1.29); ORg = 1.01 (1.00, 1.03)), certain intestinal diseases (ORo = 1.14 (1.10, 1.18); ORg = 1.03 (1.01, 1.06)), hearing difficulty with background noise (ORo = 1.11 (1.11, 1.12); ORg = 1.01 (1.00, 1.01)), knee arthrosis (ORo = 1.13 (1.09, 1.18); ORg = 1.03 (1.01, 1.05)), frequent sleeplessness (ORo = 1.21 (1.20, 1.23); ORg = 1.02 (1.01, 1.03)), and low household income (ORo = 1.28 (1.26, 1.31); ORg = 1.02 (1.01, 1.03)). Approximately 62% of results were significant in the observational OWA but not the genetic OWA, including numerous cardiovascular outcomes. Only 6 outcomes were significant in the genetic OWA and null in the observational OWA; these included diastolic blood pressure and glaucoma. No outcomes were statistically significant in opposite directions in the two analyses, and 11% were not significant in either OWA.

CONCLUSIONS

Our findings underscore the far-reaching negative effects of childhood maltreatment in later life and the utility of an outcome-wide triangulation design with sensitivity analyses for improving causal inference.

Difficulties Encountered by Forensic Pathologists in Proving Abusive Head Trauma in Children: A Case Report

Shaken baby syndrome (SBS) or abusive head trauma (AHT) is one of the most common causes of death or serious neurological injury resulting from child abuse. AHT is defined as injury to the skull or intracranial contents of an infant or child younger than five years due to intentional abrupt impact and/or violent shaking. It is characterized by acute encephalopathy with subdural and retinal hemorrhages. We present a case of AHT that does not show the typical clinical triad. We describe one case of a pediatric patient addressed for forensic autopsy and where suspicion of AHT has arisen. The injury mechanism involved in the production of this syndrome and its clinical manifestation are sources of debate in forensic medicine. Thus, forensic pathologists must analyze all findings to determine SBS/AHT.

Examining diagnostic variability among pediatric subspecialists using case examples of infant head injury

BACKGROUND

Although there is research regarding the diagnosis and timing of abusive head trauma, there remains practice variation among pediatric subspecialists.

OBJECTIVES

To examine diagnostic variability among pediatric subspecialists using case examples of infant head injury. Secondary objectives were timing variability among subspecialists, and diagnostic and timing variability among Child Abuse Pediatricians (CAPs).

PARTICIPANTS AND SETTING

Pediatric subspecialists were recruited from Child Abuse Pediatrics, Hospital Medicine, Emergency Medicine, Critical Care, and Neurosurgery to complete a research instrument. Participants qualified for the study if they evaluated at least 1 case of possible abusive head trauma during their career.

METHODS

This multi-institutional, mixed-methods study used a research instrument with 4 case examples of infant head injury: severe retinal hemorrhages (RH), mass-effect subdural hemorrhage (SDH), SDH membrane formation, and sepsis. The response selected by most CAPs was reference and compared across subspecialties and among CAPs using Chi-square or Fisher's exact tests. A Bonferroni correction (p < 0.01) was used for subspecialty comparisons.

RESULTS

There were 288 participants who completed at least 1 case example. Diagnostic variability was observed in all case examples. Significantly fewer Hospital Medicine (34.9 % vs. 57.9 %, p < 0.01), Emergency Medicine (28.0 % vs. 57.9 %, p < 0.0001), and Neurosurgery (24.0 % vs. 57.9 %, p < 0.01) participants selected the reference response for the mass-effect SDH case example. Timing variability was statistically significant for all case examples (p < 0.01). Significantly fewer CAPs aged 44-64 years selected the reference response for timing (p < 0.01) for the severe RH case example.

CONCLUSIONS

Additional peer review processes and consensus guidelines for challenging issues in abusive head trauma may be beneficial.

Clinical and Forensic Investigation Protocols for Diagnosing Abusive Head Trauma: A Literature Review

Abusive head trauma (AHT) represents a very serious global public health problem. Prevention of these episodes is essential to reduce the morbidity and mortality of this phenomenon. All healthcare professionals should be able to recognize the signs of abuse. However, diagnosis is very complex as the signs are often blurred and cannot be recognized with certainty without carrying out adequate instrumental investigations. It has been calculated that approximately one-third of AHT cases remain undetected and require more than one medical visit to be correctly interpreted and diagnosed. On the other hand, the literature has recently also emphasized the problems related to possible false diagnoses of abuse and the numerous family and personal repercussions that follow from this issue. For these reasons, correct and timely recognition is essential to avoid the risk of recurrence of AHT and to start proper forensic investigations, in order to identify the offender or exonerate a suspect. The present work explores the most recent evidence of recent years in the field of AHT diagnostics through a literature review. The purpose of this article is to provide forensic pathologists with clear tools for diagnosis based on the literature. To this end, the review suggests clinical and forensic protocols aimed at the timely diagnosis of AHT in order to prevent abuse from remaining undetected.

Subdural hemorrhages and severe retinal hemorrhages in a short fall with a rotational component

We present the case of a 5-month-old referred for child abuse investigation with subdural hemorrhages and extensive retinal hemorrhages following a short fall from a swivel chair seen on video footage. Subdural hemorrhages with extensive retinal hemorrhages are not typically seen as the result of short household falls. Reviewing the footage, contributing factors may have included increased rotational and deceleration forces.

Development of a Deep Learning Model for Retinal Hemorrhage Detection on Head Computed Tomography in Young Children

Importance

Abusive head trauma (AHT) in children is often missed in medical encounters, and retinal hemorrhage (RH) is considered strong evidence for AHT. Although head computed tomography (CT) is obtained routinely, all but exceptionally large RHs are undetectable on CT images in children.

Objective

To examine whether deep learning-based image analysis can detect RH on pediatric head CT.

Design, Setting, and Participants

This diagnostic study included 301 patients diagnosed with AHT who underwent head CT and dilated fundoscopic examinations at a quaternary care children's hospital. The study assessed a deep learning model using axial slices from 218 segmented globes with RH and 384 globes without RH between May 1, 2007, and March 31, 2021. Two additional light gradient boosting machine (GBM) models were assessed: one that used demographic characteristics and common brain findings in AHT and another that combined the deep learning model's risk prediction plus the same demographic characteristics and brain findings.

Main Outcomes and Measures

Sensitivity (recall), specificity, precision, accuracy, F1 score, and area under the curve (AUC) for each model predicting the presence or absence of RH in globes were assessed. Globe regions that influenced the deep learning model predictions were visualized in saliency maps. The contributions of demographic and standard CT features were assessed by Shapley additive explanation.

Results

The final study population included 301 patients (187 [62.1%] male; median [range] age, 4.6 [0.1-35.8] months). A total of 120 patients (39.9%) had RH on fundoscopic examinations. The deep learning model performed as follows: sensitivity, 79.6%; specificity, 79.2%; positive predictive value (precision), 68.6%; negative predictive value, 87.1%; accuracy, 79.3%; F1 score, 73.7%; and AUC, 0.83 (95% CI, 0.75-0.91). The AUCs were 0.80 (95% CI, 0.69-0.91) for the general light GBM model and 0.86 (95% CI, 0.79-0.93) for the combined light GBM model. Sensitivities of all models were similar, whereas the specificities of the deep learning and combined light GBM models were higher than those of the light GBM model.

Conclusions and Relevance

The findings of this diagnostic study indicate that a deep learning-based image analysis of globes on pediatric head CTs can predict the presence of RH. After prospective external validation, a deep learning model incorporated into CT image analysis software could calibrate clinical suspicion for AHT and provide decision support for which patients urgently need fundoscopic examinations.

New Insights into the Diagnosis and Age Determination of Retinal Hemorrhages from Abusive Head Trauma: A Systematic Review

(1) Background: Head trauma represents the first cause of death in abused children, but diagnostic knowledge is still limited. The characteristic findings of abusive head trauma (AHT) are retinal hemorrhages (RH) and additional ocular findings, including optic nerve hemorrhages (ONH). However, etiological diagnosis must be cautious. (2) Methods: The Preferred Reporting Items for Systematic Review (PRISMA) standards were employed, and the research focus was the current gold standard in the diagnosis and timing of abusive RH. (3) Results: Sixteen articles were included for qualitative synthesis. The importance of an early instrumental ophthalmological assessment emerged in subjects with a high suspicion of AHT, with attention to the localization, laterality, and morphology of the findings. Sometimes it is possible to observe the fundus even in deceased subjects, but the current techniques of choice consist of Magnetic Resonance Imaging and Computed Tomography, also useful for the timing of the lesion, the autopsy, and the histological investigation, especially if performed with the use of immunohistochemical reactants against erythrocytes, leukocytes, and ischemic nerve cells. (4) Conclusions: The present review has made it possible to build an operational framework for the diagnosis and timing of cases of abusive retinal damage, but further research in the field is needed.

Ophthalmic imaging in abusive head trauma

BACKGROUND

Ophthalmic imaging plays an increasingly important role the evaluation of abusive head trauma, however these imaging modalities may be unfamiliar to non-ophthalmologists.

OBJECTIVE

To provide pediatricians and child abuse pediatric professionals with background on ophthalmic imaging techniques in the context of suspected abuse, as well as information on commercial options and costs for those interested in augmenting their ophthalmic imaging capabilities.

METHODS

We performed a review of the ophthalmic imaging literature for fundus photography, ocular coherence tomography, fluorescein angiography, ocular ultrasound, computed tomography, magnetic resonance imaging and postmortem imaging. We also contacted individual vendors for equipment pricing information.

RESULTS

For each ophthalmic imaging modality, we demonstrate its role in the evaluation of abusive head trauma including indications, potential findings, sensitivity and specificity of findings for abuse, and commercial options.

CONCLUSIONS

Ophthalmic imaging is an important supportive component of the evaluation for abusive head trauma. When used in conjunction with clinical examination, ophthalmic imaging can improve diagnostic accuracy, support documentation, and possibly improve communication in medicolegal contexts.

Assessing retinal hemorrhages with non-invasive post-mortem fundus photographs in sudden unexpected death in infancy

INTRODUCTION

In the case of sudden unexpected death in infancy (SUDI), eye examination is systematic to detect retinal hemorrhages (RH) that are a crucial hallmark for abusive head trauma (AHT). The aim of this study is to assess the ability of non-invasive post-mortem fundus photographs (PMFP) to detect RH in case of SUDI.

METHODS

Bicentric retrospective analysis of consecutive cases of SUDI under 2 years of age were managed by two French SUDI referral centers with PMFP by RetCam (Clarity Medical Systems USA). PMFP were reviewed randomly, twice, by three independent ophthalmologists blinded for clinical data.

RESULTS

Thirty cases (60 eyes) were included. Median age was 3.5 months (interquartile [1.6; 6.0]). No child died of AHT. Image quality was sufficient to assert presence or absence of RH in 50 eyes (83%). Sufficient quality rate was significantly higher when the post-mortem interval was inferior to 18 h (91%, 42/46) as opposed to over 18 h (57%, 8/14, p=0.0096). RH were found in six eyes (10%), four children (13%), with excellent inter and intra-raters' concordance (Cohen's Kappa from 0.81 [0.56-1.00] to 1.00 [1.00-1.00]).

CONCLUSION

PMFP can detect RH in case of SUDI and is a relevant systematic screening test to be carried out as soon as the deceased child arrives in the hospital. It can decrease the need of eye removal for pathological examination, but further studies are needed to define the best decision algorithm.

MR Protocols for Paediatric Neurosurgical Common Conditions: An Update Guide for Neurosurgeons

The biggest challenge for clinicians and surgeons when it comes to radiological examinations is the ability to request the right modalities and to understand the strengths and limitations of each modality. This is particularly important in paediatric neurosciences where despite magnetic resonance imaging (MRI) being the main imaging modality, there are several protocols, technical limitations of specific scanners and issues related to sedation that need to be taken into account. In this chapter, we describe a simple approach for six common neurosurgical conditions to guide the paediatric neurosurgeons in requesting the right MR protocol and understanding the rationale of it.Paediatric neuro-oncology, epilepsy and neck/skull base protocols are discussed elsewhere in this book and therefore will not be a focus in this chapter (Bernasconi et al., Epilepsia 60:1054-68, 2019; D'Arco et al., Neuroradiology 64:1081-100; 2022; Avula et al., Childs Nerv Syst 37:2497-508; 2021).

The Eyes Have It: How Critical are Ophthalmic Findings to the Diagnosis of Pediatric Abusive Head Trauma?

Pediatric abusive head trauma (AHT), still colloquially known as shaken baby syndrome, is a leading cause of morbidity and mortality among infants. Controversy has grown surrounding this diagnosis, and the specificity of the clinical findings-subdural hemorrhage, cerebral edema, and retinal hemorrhages-has been challenged. A literature search of peer reviewed publications on PubMed pertaining to the history, clinical, and pathologic features of AHT was conducted using the terms "shaken baby syndrome," "non-accidental trauma," "abusive head trauma," "inflicted traumatic brain injury," "shaken impact syndrome," and "whiplash shaken infant syndrome." Focus was placed on articles discussing ophthalmic findings in AHT. Retinal hemorrhages-particularly those that are too numerous to count, occurring in all layers of the retina (preretinal, intraretinal, subretinal), covering the peripheral pole and extending to the ora serrata, and accompanied by retinoschisis and other ocular/periocular hemorrhages-are highly suggestive of AHT, particularly in the absence of otherwise explained massive accidental trauma. Although the diagnosis has grown in controversy in recent years, AHT has well-documented clinical and pathologic findings across a large number of studies.

The eye in child abuse

Child physical abuse may result in a range of injuries to the globe and surrounding tissues. These injuries have varying degrees of specificity for abuse, and no pattern of injury is unique to abuse. Easily overlooked eye injuries in non-ambulatory infants often portend more severe abuse and require careful evaluation for occult injury when they are unexplained. Retinal hemorrhages are most often a sign of significant trauma and the severity of the hemorrhages generally parallels the severity of neurological trauma. Ophthalmologists contribute important data that more easily distinguish medical disease from trauma, but caution is needed in differentiating accidental from inflicted trauma. This distinction requires careful consideration of the complete clinical data and occasionally on additional law enforcement or child welfare investigation.

Prevalence and Causes of Subconjunctival Hemorrhage in Children

OBJECTIVE

Subconjunctival hemorrhage (SCH) is a reported sign of occult abusive injury, but there are limited published data about SCH during childhood. We sought to determine the prevalence and causes of SCH in children.

METHODS

This is a retrospective cross-sectional study of children seen by pediatric ophthalmologists in an outpatient setting over 4 years. Primary outcomes were prevalence and causes of SCH, based on history, physical ocular and nonocular findings, and laboratory and imaging studies. Subconjunctival hemorrhage prevalence was determined including and excluding eye surgery to reduce bias in the prevalence estimate.

RESULTS

We studied 33,990 children, who underwent 86,277 examinations (median age, 5 years; range, 2 days to 18 years; 9282 younger than 2 years, 13,447 age 2-7 years, 11,261 age 8-18 years). There were 949 cases of SCH (1.1%; 95% confidence interval, 1.0-1.2). When surgery was excluded, there were 313 cases (prevalence, 0.4%; 95% confidence interval, 0.3-0.4), of which 261 (83%) were due to trauma; 40 (13%) ocular surface inflammation, including infectious conjunctivitis; 7 (2%) orbital or conjunctival lesion; 3 (1%) vessel rupture from choking or cough; and 2 (1%) coagulopathy related. Across all ages, including less than 2 years, trauma and inflammation together accounted for 94% to 97% of all cases of SCH.

CONCLUSIONS

Subconjunctival hemorrhage is uncommon in children. The great majority of cases are due to trauma. All children with SCH, including infants and young children, should be closely examined to identify other ocular or nonocular signs of trauma.

Multiple giant retinal tears due to inflicted injury in a neonate

Purpose

This case represents the longest follow-up period and youngest patient treated for multiple GRTs in the same eye associated with physical abuse.

Observations

A 4-week-old otherwise healthy male presented with a constellation of unexplained injuries. Examination of the left eye revealed a mild lens opacity and a shallow retinal detachment with two giant retinal tears (GRTs) and no retinal hemorrhages. Examination of the right eye was unremarkable. Extensive investigations were negative for any underlying medical conditions. The constellation of injuries was felt to be due to physical abuse. The giant retinal tears were treated successfully with lens sparing pars plana vitrectomy. After long-term follow-up of 5 years, there was no cataract progression or development of glaucoma.

Conclusions and importance

Clinicians should suspect child abuse in any pediatric patient with GRTs, with or without retinal hemorrhages, to ensure they are connected with the appropriate children's safeguarding society as soon as possible.

Predictive value of non-ocular findings for retinal haemorrhage in children evaluated for non-accidental trauma

PURPOSE

To determine non-ocular examination findings in non-accidental trauma (NAT) patients that are associated with retinal haemorrhage and warrant urgent examination by an ophthalmologist.

METHODS

A hospital- and clinic-based retrospective cross-sectional and cohort study of children age 0-12 years who underwent workup for NAT over a span of nine years in a level I trauma and tertiary referral centre. Details of ocular and non-ocular examination and imaging findings at the time of NAT evaluation were collected by chart review. Univariate and logistic regression analysis for association between retinal haemorrhage and non-ocular examination findings was performed.

RESULTS

A total of 557 patients with ophthalmology evaluation and 425 without were included in this study. All ages combined, none of the cutaneous signs of trauma or non-skull fractures were associated with retinal haemorrhage on univariate analysis (p > 0.05). By logistic regression, subdural or extra-axial haemorrhage (OR = 16.2; 95% CI [5.11-51.3]), occipital lobe insult (OR = 6.2; 95% CI [1.77-21.6]) and Glasgow coma score (GCS) <15 (OR = 5.8; 95% CI [1.96-17.4]) were significant predictors of retinal haemorrhage.

CONCLUSION

Subdural or undistinguished extra-axial haemorrhage, GCS <15, and occipital lobe insult are risk factors for the presence of retinal haemorrhage in patients with suspected NAT and their presence warrant urgent dilated fundus examination by an ophthalmologist. The presence of cutaneous trauma or non-skull bone fractures without the aforementioned risk factors does not warrant ophthalmology evaluation.

Nontraumatic orbital emergencies: a pictorial essay - CT and MRI features for an imaging findings-based approach

Orbital imaging plays a pivotal role in each hospital with an Ophthalmological Emergency Department. Unenhanced orbital computed tomography (CT) usually represents the first-line tool for the assessment of nontraumatic orbital emergencies, thanks to its quick execution, wide availability, high resolution, and availability of multiplanar reformats/reconstructions. Magnetic resonance imaging (MRI) is an essential tool that allows characterization and a better understanding of the anatomical involvement of different disorders due to its excellent contrast resolution and ability to study the visual pathways, even if, unfortunately, it is not always available in the emergency setting. It represents the first imaging choice in pediatric patients, due to the absence of ionizing radiation. When available, CT and MRI are often used together to diagnose, assess the extent, and provide treatment plans for various orbital nontraumatic emergencies, including infective, inflammatory, vascular, and neoplastic diseases. Familiarity with the imaging appearances of these disorders helps the radiologists to establish the correct diagnosis in the emergency setting, which contributes to timely clinical management. This pictorial essay provides a description of the clinical presentation and imaging findings of nontraumatic orbital emergencies.

Ocular Injuries in Pediatric Patients Admitted With Abusive Head Trauma

BACKGROUND

Pediatric abusive head trauma (AHT) refers to head injury from intentional blunt force or violent shaking in children aged five years or less. We sought to evaluate the epidemiology of ocular injuries in AHT.

METHODS

This retrospective analysis of the National Trauma Data Bank (2008 to 2014) identified children aged five years or less with AHT and ocular injuries using ICD-9-CM codes. Demographic data, types of ocular and nonocular/head injuries, geographic location, length of hospital admission, injury severity, and Glasgow Coma scores were tabulated and analyzed.

RESULTS

A total of 10,545 children were admitted with AHT, and 2550 (24.2%) had associated ocular injuries; 58.7% were female. The mean age was 0.5 (±1.0) years. Most (85.7%) were aged one year or less. Common ocular injuries included contusion of eye/adnexa (73.7%) and retinal edema (59.3%), and common head injuries were subdural hemorrhage (SDH) (72.8%) and subarachnoid hemorrhage (22.9%). Retinal hemorrhages occurred in 5.3%. About 42.8% of children had injury severity scores greater than 24 (very severe), and the mortality rate was 19.2%. Children aged one year or less had the greatest odds of retinal hemorrhages (odds ratio [OR] = 2.44; P = 0.008) and SDH (OR = 1.55; P < 0.001), and the two- to three-year-old group had the greatest odds of contusions (OR = 1.68; P = 0.001), intracerebral hemorrhages (OR = 1.55; P = 0.002), and mortality (OR = 1.78; P < 0.001). For all ages, SDH occurred most frequently with retinal edema compared with other ocular injuries (OR = 2.25; P < 0.001).

CONCLUSIONS AND RELEVANCE

Ocular injuries varied with age and were variably associated with nonocular injury. The youngest group was most frequently affected; however, the two- to three-year-old group was most likely to succumb to injuries.

Non-accidental Trauma in Infants: a Review of Evidence-Based Strategies for Diagnosis, Management, and Prevention

Purpose of Review

To provide a resource for providers that may be involved in the diagnosis and management of infant non-accidental trauma (NAT).

Recent Findings

Infants are more likely to both suffer from physical abuse and die from their subsequent injuries. There are missed opportunities among providers for recognizing sentinel injuries. Minority children are overrepresented in the reporting of child maltreatment, and there is systemic bias in the evaluation and treatment of minority victims of child abuse.

Summary

Unfortunately, no single, primary preventative intervention has been conclusively shown to reduce the incidence of child maltreatment. Standardized algorithms for NAT screening have been shown to increase the bias-free utilization of NAT evaluations. Every healthcare provider that interacts with children has a responsibility to recognize warning signs of NAT, be able to initiate the evaluation for suspected NAT, and understand their role as a mandatory reporter.

Unusual eye injury related to abusive head trauma

Ophthalmological examination is an essential component in clinically diagnosing abusive head trauma (AHT). Typical of AHT injuries is retinal bleeding, with other parts of the eye sometimes also being affected. Visual impairment and blindness are long-term complications in this context. We present a case with unusual eye injuries after a diagnostically confirmed AHT.

The ophthalmological findings on admission day showed a massive subhyaloid hemorrhage at the posterior pole and extensive flame-shaped intraretinal hemorrhages accented on the right side., A centrally localized vitreous hemorrhage appeared on both sides 3 weeks later, obscuring the optic disc and macula most probably due to a breakthrough of a sub-internal limiting membrane (ILM) hemorrhage into the vitreous cavity. Follow-up 4 weeks later revealed a dense and organized vitreous hemorrhage occupying the optic disc and macula so that a pars plana vitrectomy was performed on both eyes.

The bilateral bleeding in different retinal layers, the vitreous hemorrhage and the proliferative vitreoretinal reaction (PVR) indicated massive damage caused by a significant acceleration-deceleration trauma. A two-phase vitreous hemorrhage in a child with AHT does not yet appear to have been described in the literature.

Outcome of abusive head trauma in children less than 2 years: A single center study from a middle-income country

BACKGROUND

Abusive head trauma (AHT) is a severe manifestation of physical abuse in young children. This study examines the outcome of AHT in children under 2 years and features associated with mortality and disability.

METHODS

Retrospective chart review of 72 children under 2 years diagnosed to have AHT between 2011 and 2018 at a tertiary teaching hospital in Malaysia. Demographic variables, clinical features, results of neuroimaging and their associations with outcome were explored.

RESULTS

The median age at presentation was 4 months, 78% were six months or younger and 68% were male. Two-thirds became unwell in the care of an alternative caregiver. Subdural hemorrhage was present in 98%. Mortality was 10%. Forty-nine survivors returned with median interval of 16 months (IQR 5-44 months) between discharge and last follow-up. At least 35% of 65 survivors were disabled with 29% having multiple disabilities. Multiple disabilities (61.1% versus 25.8%) and cognitive impairment (61.1% versus 22.6%) were significantly higher in children 3 years or older at last follow-up (p < 0.05). Signs of brainstem dysfunction at presentation, requirement for ventilation and hypoxic-ischemic injury on neuroimaging were associated with mortality. Needing ventilation, cerebral edema and neurological or visual impairment at discharge were associated with disability.

CONCLUSIONS

Outcomes of death or disability in 42% make prevention of AHT a public health priority. Survivors require long-term multi-disciplinary follow-up for coordination of rehabilitation and educational support. Prevention should be directed at improving resources and services to support families in the care of young infants under 6 months.

The Eye in Forensic Medicine: A Narrative Review

ABSTRACT

The eye, with its distinctive anatomy, not only reflects a wide variety of diseases in life but also undergoes a myriad of post-mortem changes. Consequently, the eye has long been an area of interest in forensic science, primarily for the estimation of post-mortem interval and therefore the time of death and also for assistance in ascertaining the cause of death. There has been significant progress in the knowledge of ophthalmic forensic science using new technologies which have allowed further possibilities to arise where understanding of this field can assist the forensic pathologist. This review aims to highlight the current knowledge which exists in this field and also to identify important avenues for further investigation. Post-mortem changes of the eye along with its current applications and challenges will be discussed. These include the important areas of post-mortem iris biometrics, pupil size correlation with post-mortem interval, use of point-of-care technology on vitreous humor, and the use of ophthalmic imaging in pediatric abusive head trauma.

Neuroimaging of retinal hemorrhage utilizing adjunct orbital susceptibility-weighted imaging

Retinal hemorrhages are an integral part of the evaluation of abusive head trauma (AHT). Timely detection of retinal hemorrhage not only facilitates the diagnosis of AHT, but has the potential to prevent further abuse to the child and the siblings and to identify the abuser. The gold standard for diagnosing retinal hemorrhage is a dilated fundoscopy exam, which requires pharmacological dilation. As such, there is a small percentage of patients for whom the dilated fundoscopy exam might be delayed. Evolving literature suggests that MRI, specifically susceptibility-weighted imaging (SWI), of the orbits might provide an alternative diagnostic tool for noninvasively detecting retinal hemorrhages, particularly when there is a delay in administering the dilated fundoscopy exam. In this paper we review the utility of SWI for detecting retinal hemorrhages in abusive head trauma, including discussion of diagnostic limitations and future research.

Pediatric Abusive Head Trauma: A Systematic Review

Abusive head trauma (AHT) represents a commonly misdiagnosed condition. In fact, there is no pathognomonic sign that allows the diagnosis in children. Therefore, it is such an important medico-legal challenge to evaluate reliable diagnostic tools. The aim of this review is to evaluate the current scientific evidence to assess what the best practice is in order to diagnose AHT. We have focused particularly on evaluating the importance of circumstantial evidence, clinical history, the use of postmortem radiological examinations (such as CT and MRI), and the performance of the autopsy. After autopsy, histological examination of the eye and brain play an important role, with attention paid to correlation with symptoms found in vivo.

Charting the Globe: How Technologies Have Affected Our Understanding of Retinal Findings in Abusive Head Trauma/Shaken Baby Syndrome

Purpose: Ocular findings such as retinal hemorrhages are common in abusive head trauma (AHT). Binocular indirect ophthalmoscopy has been the standard for assessing the eyes of children who are victims of AHT. However, technological advances have changed our understanding of retinal findings in AHT.Methods: Literature review on AHT - retinal findings, imaging technologies, models of representation, and telemedicine applications.Results: Many studies suggest vitreoretinal traction from repetitive acceleration-deceleration shearing forces during shaking plays an important role in the development of retinal findings in AHT. This is further supported by different imaging modalities [optical coherence tomography (OCT); magnetic resonance imaging (MRI); fluorescein angiography (FA)] and models of representation (animal and mechanical models; finite element analysis).Conclusion: Emerging technologies have augmented our diagnostic abilities, enhanced our understanding regarding the pathophysiology of retinal findings, and strengthened the link between vitreoretinal traction and ocular pathology in AHT. Telemedicine is also starting to play an important role in AHT.

Retinal hemorrhage and bleeding disorders in children: A review

BACKGROUND

Retinal hemorrhages (RH) are a common manifestation of abusive head trauma (AHT) resulting from acceleration-deceleration injury with or without blunt impact. Evaluation of a child with RH requires careful consideration of these differential diagnoses. The extent to which coagulopathy alone can cause RH would be useful to understand as coagulopathy may accompany AHT.

OBJECTIVE

In this systematic review, we sought to identify whether coagulopathies have been reported with RH similar to those of AHT.

METHODS

We performed a literature search for ocular manifestations of bleeding disorders in children less than 18 years old. We included clotting factor deficiencies, vitamin K deficiency, platelet function abnormalities, thrombocytopenia, disseminated intravascular coagulation (DIC), and trauma induced coagulopathy (TIC). We included only pediatric reports of intraocular bleeding or documented eye examinations that indicated no hemorrhages. We then re-examined cases for ocular and systemic findings that could potentially mimic abuse.

RESULTS

Our initial search yielded 816 results. Sixty-one articles met our inclusion criteria. Of these, there were 32 children within the AHT age range (less than 5 years old) who had RH and concomitant coagulopathy. Only 5 cases might potentially be confused for abuse. Of these, no classic characteristics of RH from abuse such as retinoschisis or retinal folds were found. Systemic features were inconsistent with AHT.

CONCLUSIONS

The presence of coagulopathy alone does not rule out the possibility that the child has been abused. Coagulopathy alone has not been reported as an etiology of RH that are consistent with AHT, especially when other findings are present.

Evidence-Based Clinical Practice Guideline: Comprehensive Pediatric Eye and Vision Examination

Republished with written permission granted from the American Optometric Association, October 2, 2020.

Clinical guidelines for traumatic brain injuries in children and boys

The main aim of management of pediatric traumatic brain injury (TBI) is to hold normal ranges for optimizing the most proper outcomes. However, to provide physiologic requirements to an injured brain it is very important to enhance the quality of recovery and minimize secondary injuries. The aim of study is to identify proper guidelines to manage pediatric TBI. A comprehensive research was conducted on biomedical and pharmacologic bibliographic databases of life sciences, i.e., PubMed, EMBASE, MEDLINE, LILACS database, global independent network of Cochrane, Science Direct and global health library of Global Index Medicus (GIM) from 2000 to 2019. Main objective of this study was to provide a comprehensive review of available clinical practice guidelines for TBI. These guidelines can be administered to a pediatric population to improve the quality of clinical practice for TBI. These guidelines could be applied worldwide, despite different traditional demographic and geographic boundaries, which could affect pediatric populations in various ranges of ages. Accordingly, advances in civil foundations and reforms of health policies may decrease pediatric TBI socioeconomic burdens.

Ophthalmology referral as part of a multidisciplinary approach to suspected abusive head trauma

OBJECTIVE

To determine the use of ophthalmology consultation as part of investigation of children with suspected abusive head trauma (AHT).

METHODS

Retrospective chart review of children under age 3 years evaluated at McMaster Children's Hospital for suspected AHT from January 2011 to December 2017.

RESULTS

Fifty-seven children were investigated, and 29 (50.9%) of these were determined to have likely AHT. Eleven (19.3%) had other nonaccidental injuries. A mean of 3.6 consulting services were involved. Neuroimaging was performed for 52 patients (91.2%), including all patients in the AHT group. Intracranial hemorrhage (ICH) was present in 21 of the 29 AHT children (72.4%). All 57 patients had a dilated fundus examination, and retinal hemorrhages (RH) were seen in 23 patients (40.4%), including 16 (55.2%) in the AHT group. All patients with RH in AHT also had ICH. In the AHT group, there were more cases of hemorrhages too numerous to count (68.8% vs 28.6%), multilayered hemorrhages (75.0% vs 57.1%), and hemorrhages in the posterior pole and periphery (87.5% vs 42.9%) when compared with patients with RH from other etiologies. Retinoschisis was seen in the AHT group only in 3 patients (18.8%).

CONCLUSIONS

A multidisciplinary approach is important when investigating suspected AHT. Not every child with RH had suffered AHT; however, children with AHT showed more widespread and more multilayered RH. The only finding specific to AHT was retinoschisis.

Susceptibility-weighted imaging of retinal hemorrhages in abusive head trauma

BACKGROUND

Retinal hemorrhages are one of the most important supportive evidences for abusive head trauma (AHT). Susceptibility-weighted imaging (SWI) is highly suited to identify various forms of intracranial hemorrhage in AHT. However its utility in imaging retinal hemorrhage is not well established.

OBJECTIVE

SWI is a sensitive sequence for identifying retinal hemorrhage on MRI.

MATERIALS AND METHODS

In this retrospective analysis, 26 consecutive infants and young children with a suspected admission diagnosis of AHT underwent indirect ophthalmoscopy and brain MRI protocol for AHT along with SWI. Brain susceptibility-weighted images of 14 age-matched children were used as controls. For detecting retinal hemorrhage, susceptibility-weighted images of patients and controls were reviewed randomly and independently by two neuroradiologists who were blinded to the history and ophthalmology findings. A pediatric ophthalmologist graded the indirect ophthalmoscopy images.

RESULTS

A diagnosis of AHT was confirmed in all 26 cases from a multidisciplinary meeting. Indirect ophthalmoscopy images were available in 21 cases. Ophthalmoscopy was positive for retinal hemorrhage in the right eye in 18 cases (85.7%) and in the left eye in 16 cases (76.2%). On SWI, retinal hemorrhage was identified in the right eye in 9/21 cases (42.8%) and in the left eye in 8/21 cases (38.1%) of AHT. Analysis of SWI in 21 cases of AHT demonstrated a sensitivity of 50%, specificity of 100%, positive predictive value of 100% and negative predictive value of 32% for detecting retinal hemorrhage.

CONCLUSION

SWI is moderately sensitive and highly specific for identifying retinal hemorrhage in AHT. Further studies are needed to identify steps to improve the efficiency of SWI in detecting retinal hemorrhage.

A comparison of pediatric ocular injuries based on intention in patients admitted with trauma

Purpose

Pediatric ocular trauma is a major source of morbidity and blindness and the number of epidemiological studies is incommensurate with its significance. We sought to determine differences in epidemiologic patterns of pediatric ocular injuries based on intention.

Methods

A retrospective review of the National Trauma Data Bank (2008–2014) was performed and patients < 21 years old, admitted with trauma and ocular injury, were identified using ICD-9CM codes. Demographic data, types of injury and external circumstances including intention were tabulated and analyzed with students’ t and chi-squared tests and logistic regression. Statistical significance was set at p < 0.05.

Results

Fifty-eight thousand seven hundred sixty-five pediatric patients were admitted for trauma and ocular injuries. The mean(SD) age was 11.9(6.9) years. Most patients were male (68.7%) and White (59.1%). Unintentional injuries (76.3%) were mostly associated with falls (OR = 13.4, p < 0.001), assault (16.3%) with firearms (OR = 9.15, p < 0.001) and self-inflicted trauma (0.7%) also with firearms (OR = 44.66, p < 0.001). There was increasing mean(SD) age from unintentional, 12.9(6.6) years and assault 12.3(8.1) years to self-inflicted trauma, 17(3.4) years. The 0-3 year age group had highest odds of open adnexa wounds (OR = 30.45, p < 0.001) from unintentional trauma, and traumatic brain injury (TBI) (OR = 5.77, p < 0.001) and mortality (OR = 8.52, p < 0.001) from assault. The oldest 19-21 year group, had highest odds visual pathway injuries (OR = 8.34, p < 0.001) and TBI (OR = 1.54, p = 0.048) from self-inflicted trauma and mortality (OR = 2.08, p < 0.001) from unintentional trauma.

Conclusion

Sight-threatening injuries were mostly associated with unintentional trauma in the youngest group and self-inflicted trauma in the oldest group. Patterns emerged of associations between demographic groups, mechanisms, types of injury and associated TBI with intention of trauma.

Electronic supplementary material

The online version of this article (10.1186/s12886-018-1024-7) contains supplementary material, which is available to authorized users.

Traumatic shaking: The role of the triad in medical investigations of suspected traumatic shaking

The Swedish Agency for Health Technology Assessment and Assesment of Social Services (SBU) is an independent national authority, tasked by the government with assessing methods used in health, medical and dental services and social service interventions from a broad perspective, covering medical, economic, ethical and social aspects. The language in SBU's reports are adjusted to a wide audience. SBU's Board of Directors has approved the conclusions in this report. The systematic review showed the following graded results: There is limited scientific evidence that the triad (Three components of a whole. The triad associated with SBS usually comprises subdural haematoma, retinal haemorrhages and encephalopathy.) and therefore, its components can be associated with traumatic shaking (low-quality evidence). There is insufficient scientific evidence on which to assess the diagnostic accuracy of the triad in identifying traumatic shaking (very low-quality evidence). Limited scientific evidence (low-quality evidence) represents a combined assessment of studies of high or moderate quality which disclose factors that markedly weaken the evidence. It is important to note that limited scientific evidence for the reliability of a method or an effect does not imply complete lack of scientific support. Insufficient scientific evidence (very low-quality evidence) represents either a lack of studies or situations when available studies are of low quality or show contradictory results. Evaluation of the evidence was not based on formal grading of the evidence according to GRADE but on an evaluation of the total scientific basis.

Retinal Hemorrhages: Abusive Head Trauma or Not?

Abusive head trauma is an important cause of morbidity and mortality in infants and young children. Retinal hemorrhages (RHs) are frequently seen, particularly during dilated eye examination of these children. This review focuses on the evaluation of children with RH, with emphasis on the differential diagnosis, pathophysiology, and distinguishing features of RHs due to abusive head trauma. Many causes exist for RHs in infants and children. Most medical and accidental traumatic causes result in a pattern of RH that is nonspecific and not typical of the pattern and distribution of RHs seen in children with abusive head trauma. In children with intracranial hemorrhage and concerns for abuse, the finding of severe, multilayered RHs extending to the periphery of the retina is very specific for abuse as the cause of the findings, especially if retinoschisis is present. There are few other accidental traumatic mechanisms associated with retinoschisis, and the history of such a traumatic event is readily apparent. The indications for ophthalmologic consult, optimal timing of the eye examination, and significance of the findings are specifically discussed.

The Eye Examination in the Evaluation of Child Abuse

Child abuse can cause injury to any part of the eye. The most common manifestations are retinal hemorrhages (RHs) in infants and young children with abusive head trauma (AHT). Although RHs are an important indicator of possible AHT, they are also found in other conditions. Distinguishing the number, type, location, and pattern of RHs is important in evaluating a differential diagnosis. Eye trauma can be seen in cases of physical abuse or AHT and may prompt referral for ophthalmologic assessment. Physicians have a responsibility to consider abuse in the differential diagnosis of pediatric eye trauma. Identification and documentation of inflicted ocular trauma requires a thorough examination by an ophthalmologist, including indirect ophthalmoscopy, most optimally through a dilated pupil, especially for the evaluation of possible RHs. An eye examination is helpful in detecting abnormalities that can help identify a medical or traumatic etiology for previously well young children who experience unexpected and unexplained mental status changes with no obvious cause, children with head trauma that results in significant intracranial hemorrhage and brain injury, and children with unexplained death.

PATHOLOGY OF PERIMACULAR FOLDS DUE TO VITREORETINAL TRACTION IN ABUSIVE HEAD TRAUMA

PURPOSE

To demonstrate vitreoretinal traction as a mechanism for perimacular folds in abusive head trauma.

METHODS

We performed gross and histopathologic examination of eyes of children with suspected abusive head trauma and identified those with typical perimacular folds. Information was collected regarding the incident that led to the child's death and systemic manifestations noted at autopsy. Eyes were prepared in a fashion that allowed for demonstration of the vitreoretinal interface.

RESULTS

Ten eyes of five patients (2-13 months) were examined. All patients had systemic manifestations of abusive trauma including intracranial injury. All cases provided evidence of vitreoretinal traction producing perimacular folds. Condensed vitreous was seen attached to the apices of the retinal folds, and the detached internal limiting membrane comprising the inner surfaces of the schisis cavity. Four cases showed severe bilateral multilayered symmetric retinal hemorrhages extending to the ora serrata. All cases showed optic nerve sheath subdural hemorrhage and subarachnoid hemorrhage. Orbital hemorrhage was unilateral in two cases and bilateral in three cases. Four cases showed orbital fat hemorrhage. One case showed extraocular muscle sheath and cranial nerve sheath hemorrhage. Two cases showed juxtapapillary intrascleral hemorrhage.

CONCLUSION

Vitreoretinal traction is the likely mechanism of perimacular folds in abusive head trauma.

Pediatric abusive head trauma in Taiwan: clinical characteristics and risk factors associated with mortality

PURPOSE

To report the clinical characteristics of abusive head trauma (AHT) in Taiwan and identify the risk factors associated with mortality of these patients.

METHODS

Children with clinically diagnosed AHT from January 1, 2000, to October 31, 2015 were reviewed. The demographic data, clinical features, and associated retinal and radiologic findings were analyzed. The multivariable logistic regression model analysis was performed to identify the risk factors associated with in-hospital mortality.

RESULTS

A total of 75 children were included. The mean age was 7.31 ± 6.57 months (range, 1-36 months). Retinal hemorrhages were detected in 69 children with AHT (92%). The majority of retinal hemorrhages were characterized by hemorrhagic numbers higher than ten (74.7%), multi-layered (54.7%), and extension beyond the posterior pole to the peripheral retina (73.3%). Twenty children (26.7%) had macular retinoschisis. As a direct result of AHT, ten children died in the hospital (13.3%). Logistic regression showed that respiratory distress or apnea (adjusted odds ratio [OR] = 22.46; 95% confidence interval [CI], 2.24-225.33; P = .0082), vomiting (adjusted OR = 11.94; 95% CI, 1.31-108.403; P = .0276), retinal finding of macular retinoschisis (adjusted OR = 8.9; 95% CI, 1.01-78.65; P = .0493), and the presence of subarachnoid hemorrhage (SAH) (adjusted OR = 15.17; 95% CI, 1.40-64.84; P = .0255) were independently associated with mortality.

CONCLUSIONS

Respiratory distress or apnea, vomiting, SAH, and macular retinoschisis are independently associated with mortality in abusive head trauma. A complete ophthalmologic examination with the immediate visualization of intraocular injury should be performed to clarify the likelihood of child abuse and predict a potential poor neurologic outcome.

Retroocular and Subdural Hemorrhage or Hemosiderin Deposits in Pediatric Autopsies

The presence of hemosiderin in the optic nerve sheath and/or retina is sometimes used to estimate the timing of injury in infants or children with suspected non-accidental head trauma. To determine the prevalence of hemosiderin in deaths not associated with trauma, we performed a prospective study of retroocular orbital tissue, cranial convexity, and cervical spinal cord dura mater in infants and children <2.5 years age. In 53 cases of non-traumatic death, approximately 70% had blood or hemosiderin within the orbital fat, ocular muscles, and parasagittal cranial and/or cervical spinal subdural compartment. This bleeding is likely a consequence of the birth process. None had evidence of hemorrhage within the optic nerve sheath. Premature birth was less likely associated with orbital tissue hemorrhage. Caesarean section birth (mainly nonelective) was not associated with lower prevalence. Residual hemosiderin was identifiable up to 36 weeks postnatal age, suggesting gradual disappearance after birth. Cardiopulmonary resuscitation (performed in the majority of cases) was not associated with acute hemorrhage. In 9 traumatic deaths, 6 had blood and/or hemosiderin within the optic nerve sheath. Knowledge of the potential presence and resolution of hemosiderin in these locations is important for medicolegal interpretation of childhood deaths associated with head or brain injury.