Nonaccidental head trauma in infants

Complex Pathophysiology of Abusive Head Trauma with Poor Neurological Outcome in Infants

Abusive head trauma (AHT) in infants, especially acute subdural hematoma, has an extremely poor outcome. The most decisive and important finding is the appearance of a widespread low-density area on head computed tomography. This phenomenon was traditionally thought to be caused by cerebral ischemia. However, many other pathophysiological abnormalities have been found to be intricately involved. Recent studies have found that status epilepticus and hyperperfusion injures are the major causes. Another serious problem associated with AHT is cardiopulmonary arrest (CPA). Many infants are reported to visit to the hospital with CPA, and its pathophysiology has not been fully elucidated. This paper examines the background of these pathological conditions and associated factors and elucidate the pathophysiological mechanisms resulting in poor outcomes in AHT. In addition to the intensity of assault on the head, the peculiar pathophysiological characteristics in infants, as well as the social background specific to child abuse, are found to be associated with poor outcome.

The Association Between Maternal Shaking Behavior and Inappropriate Infant Parenting: The Japan Environment and Children's Study

Background

Although many studies have identified risk factors for maternal shaking behavior, it is unknown whether mothers who have shaken their infants repeat shaking behavior or show other inappropriate parenting behaviors. Using data from the Japan Environment and Children's Study (JECS) birth cohort study, we investigated the associations between continuous shaking behavior and the associations between shaking behavior and other inappropriate parenting behaviors.

Methods

JECS data starting from 2011 were used. Logistic regression was used to perform a cross-sectional analysis. The explanatory variable was shaking behavior and the dependent variables were leaving the infant home alone and hitting the infant (both at 1 month postpartum), and non-vaccination and infant burns (both at 6 months postpartum). A longitudinal analysis using logistic regression was also performed; here the explanatory variable was shaking behavior at 1 month postpartum and the dependent variables were shaking behavior, non-vaccination of the infant, and infant burns (all at 6 months postpartum).

Results

In this study, 16.8% and 1.2% of mothers reported shaking behavior at 1 month and 6 months postpartum, respectively. Mothers who shook their infants at 1 month postpartum were approximately five times more likely to shake them at 6 months postpartum compared with mothers who had not shown previous shaking behavior (OR = 4.92, 95% CI [4.22, 5.73], p < 0.001). In Cross-sectional study, there were associations between shaking behavior and inappropriate parenting behavior such as hitting the infant and infant burns.

Conclusion

The findings suggest that mothers who report early shaking behavior tend to subsequently repeat this behavior, and that shaking behavior may be associated with other inappropriate parenting behaviors.

A regional multidisciplinary network enhances child abuse case management

BACKGROUND

We previously reported an inadequate response to intracranial hemorrhage (ICH) cases under 24 months of age in Yokohama from 2011 to 2013. Hence, it is very important to evaluate how the establishment of a regional multidisciplinary network for child abuse affects the response to ICH cases in medical institutions.

METHODS

We conducted a questionnaire survey of ICH cases under 24 months of age from 2014 to 2016 using a regional multidisciplinary network for child abuse established in Yokohama in September 2013. We investigated the patients' characteristics, examinations to identify inflicted injury, and reports made to the hospital-based child protection team (CPT) or regional child protective service (CPS), and compared the results of a previous study and the current study, which corresponds to before and after the establishment of the regional network, respectively.

RESULTS

The total number of ICH cases was 50 in 3 years. The number of cases surveyed for covert fracture and fundus hemorrhage increased significantly after the establishment of the regional network (P = 0.0001 and P = 0.0182, respectively). The number of cases reported as suspected child abuse was 41 (82%) to the hospital-based CPTs and 27 (54%) to the regional CPSs. There were significant differences between before and after the establishment of the regional network regarding CPT (P = 0.0062) and CPS (P = 0.0215) reports.

CONCLUSIONS

A regional multidisciplinary network can enhance response and cooperation to address child abuse. It deepens our understanding of such care and improves awareness by hospital personnel of child abuse.

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 Inventory^TM). 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.

Diagnostic Imaging for Physical Abuse in Children

신체적 학대로 인한 손상은 소아에서 이환율과 사망률의 중요한 원인이 된다. 특히, 1세 이하의 영아가 신체적 학대의 위험이 높다. 신체적 학대가 의심되는 경우 영상의학과 의사의 역할은 매우 중요한데 학대가 의심되는 영상의학적 소견을 찾고 다른 질환과의 감별을 통해 신속하고 정확한 진단을 내려야 한다. 본 논문에서는 신체적 학대를 받은 아동에서 흔히 보일 수 있는 특징적인 손상인 골절, 머리 손상, 척추 손상, 흉부와 복부의 손상 등의 여러 영상의학적 소견을 설명하고 이러한 손상이 유발되는 생체 역학적 힘의 기전에 대해 알아보고자 한다.

Caring for Children with Non-Accidental Head Injuries: A Case for a Child-Centered Approach

Child abuse remains a significant issue. Non-accidental head injury (NAHI) is a major cause of mortality in young children with survivors often having to live a life with severe developmental and neurological dysfunction. The aim of this hermeneutic phenomenological research study was to examine the lived experiences of nurses who care for children and their families admitted to hospital with a non-accidental head injury. Semi-structured interviews were conducted with six nurses who had at least five years' experience of nursing children with NAHI. Following the interpretive approach described by van Manen data was analyzed and two essential themes identified. Firstly, nursing children with NAHI is different from the care of children admitted with a similar neurological injury related to accidental injuries or medical conditions. Secondly, when nursing these children nurses adopt protective qualities, conceptualized in this study as a shield of protection. The findings of this study support the findings of other studies in regard to the emotional labor required of nurses caring for children who have been subject to child abuse and the importance for nurses of maintaining a professional demeanor. The study highlighted the tensions of sustaining a family-centered care approach when caring for a child with NAHI. It is argued that greater acknowledgment and emotional support for nurses is needed and that a child-centered approach offers a more compatible model of care than Family-Centered Care in the acute phase of caring for children with a NAHI.

Cerebellar lesions in pediatric abusive head trauma

Pediatric abusive head trauma (AHT) or non accidental head trauma (NAHT) is a major cause of death from trauma in children under 2 years of age. Main etiological factor for non accidental head trauma is shaking a baby, causing brain injury by rotational head acceleration and deceleration. The consequent brain damage as shown by magnetic resonance imaging (MRI) is subdural haemorrhage and to a lesser extent parenchymal injuries of variable severity. Involvement of the cerebellum has very rarely been described. We report the clinical history and the development of cerebral magnetic resonance imaging findings in two children with serious brain injury following probable shaking who presented the typical "triad" with subdural haematoma, retinal haemorrhage and encephalopathy. We want to draw attention to cerebellar involvement characterized by cortico-subcortical signal alterations most prominent on T2w images following diffusion changes during the acute period. We discuss cerebellar involvement as a sign of higher severity of AHT which is probably underrecognized.

Undetected traumatic diastasis of cranial sutures: a case of child abuse

Traumatic diastasis of cranial sutures is a type of bone fracture more common in children than in adults, but little attention has been paid to this skull damage. Differentiation between inflicted and accidental traumatic head injury is still a challenge in forensic pathology, particularly in pediatric population. In fact, diastasis of cranial sutures may occur with or without other skull fractures and may be the only evidence of an abusive head trauma (AHT). This is a case study dealing with undetected traumatic diastasis of cranial sutures in child abuse. The skeletonized juvenile remains were found inside a suitcase. A diastasis of the coronal and sagittal sutures was the only finding recorded at the autopsy with no other relevant bone defects. The diastasis was originally attributed by the medical examiner to a physiological unfused stage of the calvarial bones. Therefore, the cause of death was undetermined. Twelve years later an anthropological revision of the cold case showed that diastasis of the coronal and sagittal sutures was assessed as the evidence of an AHT. Analysis of skull fractures in child abuse can be challenging as normal skull suture variants mimicking intentional injury are reported. Diastasis of the cranial sutures can be also a post-mortem effect of burning or freezing. Therefore, a differential diagnosis between natural, accidental or inflicted skull defects is mandatory in death investigation. A multidisciplinary approach in such circumstances is strongly recommended in order to reduce the risk of misdiagnosis.

The medical and social outcome in 2016 of infants who were victims of shaken baby syndrome between 2005 and 2013

INTRODUCTION

There are few studies that have investigated the long-term outcome of children who have been victims of shaken baby syndrome (SBS). However, the consequences appear to be significant and the data available from a social point of view are scarce. The main objective of this study was to define the medical and social outcome in 2016 of the infants who were victims of SBS and admitted to one of the Marseille university hospitals. The number of patients followed by a specialized team was evaluated along with their clinical state, living conditions, and whether a social support system such as the Child welfare system had been put into place.

METHOD

The study was retrospective and descriptive. Patients under 1 year of age who were hospitalized between January 2005 and December 2013 and manifested clinical and paraclinical characteristics enabling the diagnosis of SBS were included in the study. The diagnosis was certain, probable, or possible according to the definitions given by the consensus of the 2011 shaken baby health authority conference (HAS).

RESULTS

Eighty babies qualified for the study, three of whom died in intensive care. Only ten of these patients (12.9%) had regular (annual) neuropediatric check-up during the whole study period. Thirty-seven patients (48%) had an annual neuropediatric check-up during the first 2 years only following the diagnosis. Only 12 of the children (15.6%) were still being followed after the age of 6. The children were followed up on average for 2.5 years (29.6 months). In 24 cases (31%), the last medical visit revealed an abnormal neurological examination including multiple disabilities due to spastic quadriplegia and severe intellectual deficit, which led to total dependency in half of these cases. Forty-four patients (57%) had a normal neurological examination. Concerning the babies' social outcome, 50 patients (64.9%) had returned home, 12 (15.6%) benefited, from educational assistance at the patient's home (AEMO) following the ruling of a children's judge, and 19 (24.7%) were still placed in foster care (ASE). The average foster care placement lasted 34.7 months.

DISCUSSION AND CONCLUSION

Long-term medical follow-up for children having sustained serious head injury as a result of abuse is inadequate. Sequelae such as multiple disabilities are less frequent than described in the literature. According to this study, a longer-term follow-up is necessary for children suffering from sequelae such as learning disabilities than what is actually possible in our center.

Ocular and Intracranial MR Imaging Findings in Abusive Head Trauma

Abusive head trauma (AHT) is a form of inflicted head injury. AHT is more frequent in 2-year-old or younger children. It is an important cause of neurological impairment and the major cause of death from head trauma in this age group. Brain magnetic resonance imaging allows the depiction of retinal hemorrhages, injured bridging veins, and identifying and localizing extra- and intra-axial bleeds, contusions, lacerations, and strokes. The diagnosis of AHT is a multidisciplinary team effort which includes a careful evaluation of social, clinical, laboratory, and radiological findings. Notwithstanding, the introduction in the current clinical practice of high-resolution techniques is adding forensic evidence to the recognition of AHT.

Abusive Injuries Are Worse Than Vehicular Injuries: Should We Refocus Prevention?

OBJECTIVES

The objective of this study was to compare the injury severity and outcome of motor vehicle and nonaccidental traumatic injuries and examine trends in mortality rates over time.

METHODS

We reviewed data from 2005 to 2013 from a level 1 pediatric trauma center including demographics, injury severity, and outcomes. Primary outcomes of interest were mortality rates and hospital length of stay.

RESULTS

Injury severity scores were significantly worse for nonaccidental traumas (NATs) (P < 0.001) compared with motor vehicle collisions and motor pedestrian collisions. Nonaccidental traumas were also found to have significantly longer length of stay and higher fatality rates (P < 0.001). Significant differences were also found for the types of injuries sustained for head, extremity, trunk, and other injuries (P < 0.001), and for internal injuries (P < 0.01. Admission rates also dropped for both motor vehicle collisions and motor pedestrian collisions across the 9-year period (P < 0.001) but remained stable for NATs.

CONCLUSION

In this study population, more severe injuries, higher mortality rates, and longer hospital stays were observed in pediatric NAT compared with those sustained through vehicular means. Furthermore, we observed statistically significant declines in motor vehicle-related injuries compared with NAT.

Infants dying suddenly and unexpectedly share demographic features with infants who die with retinal and dural bleeding: a review of neural mechanisms

The cause of death in infants who die suddenly and unexpectedly (sudden unexpected death in infancy [SUDI]) remains a diagnostic challenge. Some infants have identified diseases (explained SUDI); those without explanation are called sudden infant death syndrome (SIDS). Demographic data indicate subgroups among SUDI and SIDS cases, such as unsafe sleeping and apparent life-threatening events. Infants dying suddenly with retinal and dural bleeding are often classified as abused, but in many there is no evidence of trauma. Demographic features suggest that they may represent a further subgroup of SUDI. This review examines the neuropathological hypotheses to explain SIDS and highlights the interaction of infant oxygen-conserving reflexes with the brainstem networks considered responsible for SIDS. We consider sex- and age-specific vulnerabilities related to dural bleeding and how sensitization of the dural innervation by bleeding may influence these reflexes, potentially leading to collapse or even death after otherwise trivial insults.

Neuroimaging differential diagnoses to abusive head trauma

Trauma is the most common cause of death in childhood, and abusive head trauma is the most common cause of traumatic death and morbidity in infants younger than 1 year. The main differential diagnosis of abusive head trauma is accidental traumatic brain injury, which is usually witnessed. This paper also discusses more uncommon diagnoses such as congenital and acquired disorders of hemostasis, cerebral arteriovenous malformations and metabolic diseases, all of which are extremely rare. Diagnostic imaging including CT and MRI is very important for the distinction of non-accidental from accidental traumatic injury.

Juvenile Traumatic Brain Injury Increases Alcohol Consumption and Reward in Female Mice

Traumatic brain injury (TBI) is closely and bi-directionally linked with alcohol use, as by some estimates intoxication is the direct or indirect cause of one-third to one-half of all TBI cases. Alcohol use following injury can reduce the efficacy of rehabilitation and increase the chances for additional injury. Finally, TBI itself may be a risk factor for the development of alcohol use disorders. Children who suffer TBIs have poorer life outcomes and more risk of substance abuse. We used a standardized closed-head injury to model mild traumatic brain injuries. We found that mice injured as juveniles but not during adulthood exhibited much greater alcohol self-administration in adulthood. Further, this phenomenon was limited to female mice. Using behavioral testing, including conditioned place preference assays, we showed that early injuries increase the rewarding properties of alcohol. Environmental enrichment administered after injury reduced axonal degeneration and prevented the increase in drinking behavior. Additionally, brain-derived neurotrophic factor gene expression, which was reduced by TBI, was normalized by environmental enrichment. Together, these results suggest a novel model of alterations in reward circuitry following trauma during development.

Revisiting neuroimaging of abusive head trauma in infants and young children

OBJECTIVE

The purpose of this article is to use a mechanism-based approach to review the neuroimaging findings of abusive head trauma to infants. Advanced neuroimaging provides insights into not only the underlying mechanisms of craniocerebral injuries but also the long-term prognosis of brain injury for children on whom these injuries have been inflicted.

CONCLUSION

Knowledge of the traumatic mechanisms, the key neuroimaging findings, and the implications of functional imaging findings should help radiologists characterize the underlying causes of the injuries inflicted, thereby facilitating effective treatment.

Serum amyloid A is increased in children with abusive head trauma: a gel-based proteomic analysis

BACKGROUND

Abusive head trauma (AHT) is the leading cause of death from traumatic brain injury in infants and young children. Identification of mild AHT (Glasgow Coma Scale score: 13-15) is difficult because children can present with nonspecific symptoms and with no history of trauma.

METHODS

Two-dimensional difference gel electrophoresis combined with mass spectrometry was used to compare the serum protein profile of children with mild AHT and age-matched controls. Protein changes were confirmed by western blots. Western blots were performed using serum from children with mild, moderate, and severe AHT to assess the effect of injury severity on protein intensity. The protein identified--serum amyloid A (SAA)--was then measured by enzyme-linked immunosorbent assay.

RESULTS

Using serum from 18 mild AHT cases and 20 controls, there were ~1,000 protein spots; 2 were significantly different between groups. Both spots were identified as SAA. There was no relationship between protein levels and injury severity. SAA concentrations measured by enzyme-linked immunosorbent assay were increased in cases vs. controls.

CONCLUSION

SAA may be a potential biomarker to identify children with mild AHT who present for medical care without a history of trauma and who might otherwise not be recognized as needing a head computed tomography.

Surgical options for treatment of traumatic subdural hematomas in children younger than 2 years of age

OBJECT

Subdural hematoma (SDH) is the most common finding on cranial CT in pediatric victims of abusive head trauma (AHT). The hematomas are commonly bilateral and sometimes associated with interhemispheric hyperdensity and/or convexity hemorrhages. There is no consensus regarding the best surgical treatment in such cases nor are there standardized surgical protocols. The authors report their experience and discuss the routine surgical options in the management of traumatic SDH at a Level 1 Pediatric Trauma Center.

METHODS

In this paper, the authors describe a cross-sectional study with consecutive revision of data described in the medical records of Hôpital Universitaire Necker-Enfants Malades between January 2008 and January 2013. During this period, all children younger than 2 years of age who were admitted with a traumatic SDH identified on CT scans were included in this study.

RESULTS

One hundred eighty-four children who had SDH and were younger than 2 years of age were included. Their median age was 5.8 months (range 5 days-23 months), and 70% of the children were male. On admission CT scans, the SDH was bilateral in 52% of cases and homogeneously hypodense in 77%. Neurosurgical treatment was undertaken in 111 children (60%) with an admission Glasgow Coma Scale score of 12 or less, bulging fontanels, or other signs suggestive of intracranial hypertension. The first surgical option was craniotomy in 1.8% (2) of these 111 cases, decompressive craniectomy in 1.8% (2), transcutaneous subdural puncture in 15% (17), external subdural drainage in 16% (18), subdural-subgaleal shunt placement in 17% (19), and subdural-peritoneal shunt placement in 48% (53). In 82% of the children initially treated with transcutaneous subdural puncture and in 50% of those treated with external subdural drainage, increase or persistence of the SDH, CSF or skin infection, or shunt system malfunction was observed and further surgical intervention was required. There was a 26% rate of complications in patients initially treated with a subdural-peritoneal shunt. Although 52% of the patients had bilateral SDH, bilateral drainage was only required in 9.4%.

CONCLUSIONS

The choice of treatment should be determined by the clinical and radiological characteristics of the individual case. Although effective on an emergency basis, subdural puncture and external subdural drainage are frequently insufficient to obtain complete resolution of SDH, and temporary placement of a subdural-peritoneal shunt is needed in most cases.

A brief history of fatal child maltreatment and neglect

Child abuse encompasses four major forms of abuse: physical abuse, sexual abuse, psychological abuse, and neglect. The United States retains one of the worst records of child abuse in the industrialized world. It has also been determined that a large portion of these cases are missed and go undocumented in state and federal reporting agencies. In addition, disparate risk factors have been identified for physical abuse and neglect cases, but substance abuse has been found to be a significant factor in all forms of abuse. Fatal child maltreatment and neglect investigations require a multi-pronged and multidisciplinary approach requiring the coordination and information gathering from various agencies. A major difficulty in determining the accidental or non-accidental nature of these cases is that the account surrounding the events of the death of child is acquired from the caretaker. In this review, we outline common diagnostic characteristics and patterns of non-accidental injuries and neglect as a result of nutritional deprivation.

Approach to syncope and altered mental status

Children who present with an episode of altered mental status, whether transient or persistent, present a diagnostic challenge for practitioners. This article describes some of the more common causes of altered mental status and delineates a rational approach to these patients. This will help practitioners recognize the life-threatening causes of these frightening presentations as well as help avoid unnecessary testing for the more benign causes.

Juvenile traumatic brain injury evolves into a chronic brain disorder: behavioral and histological changes over 6months

Traumatic brain injury (TBI) refers to physical trauma to the brain that can lead to motor and cognitive dysfunctions. TBI is particularly serious in infants and young children, often leading to long-term functional impairments. Although clinical research is useful for quantifying and observing the effects of these injuries, few studies have empirically assessed the long-term effects of juvenile TBI (jTBI) on behavior and histology. After a controlled cortical impact delivered to postnatal 17day old rats, functional abilities were measured after 3, 5, and 6months using open field (activity levels), zero maze (anxiety-like behaviors), rotarod (sensorimotor abilities, coordination, and balance), and water maze (spatial learning and memory, swim speed, turn bias). Sensorimotor function was impaired for up to 6months in jTBI animals, which showed no improvement from repeated test exposure. Although spatial learning was not impaired, spatial memory deficits were observed in jTBI animals starting at 3months after injury. Magnetic resonance imaging and histological data revealed that the effects of jTBI were evolving for up to 6months post-injury, with reduced cortical thickness, decreased corpus callosum area and CA1 neuronal cell death in jTBI animals distant to the impact site. These findings suggest that this model of jTBI produces long-term impairments comparable to those reported clinically. Although some deficits were stable over time, the variable nature of other deficits (e.g., memory) as well as changing properties of the lesion itself, suggest that the effects of a single jTBI produce a chronic brain disorder with long-term complications.

Abusive head trauma in children: a literature review

OBJECTIVE

To review the scientific literature on pediatric abusive head trauma as a form of physical abuse against infants and young children, highlighting the prevalence, signs and symptoms, consequences, risk factors for its occurrence, and prevention strategies.

DATA SOURCE

The MEDLINE, SciELO, LILACS, and Web of Science databases from 2001 to 2012 were reviewed, using the terms "shaken baby syndrome" and "abusive head trauma" in English, Spanish, and Portuguese.

DATA SYNTHESIS

Pediatric abusive head trauma is defined as injury to the skull or intracranial contents of a infant or child younger than 5 years due to intentional abrupt impact and/or violent shaking. It occurs mainly in infants and children under 1 year of age, and may result in severe consequences, from physical or mental disabilities to death. Although there are specific signs for this form of abuse, they can be mistaken for common illnesses in children or accidental head injury; thus, clinical training of professionals involved in the assessment of cases to attain the correct diagnosis is crucial. Prevention strategies should include early identification of cases, as well as parental education on child development, especially on the infant's crying pattern.

CONCLUSIONS

Considering the severity of abusive head trauma in children, it is critical that prevention strategies be implemented and evaluated in the Brazilian context. It is suggested that its incidence indicators be assessed at the national level.

Clinical clues for head injuries amongst Malaysian infants: accidental or non-accidental?

Identifying the differences between infants with non-accidental head injuries (NAHI) and accidental head injuries (AHI) may help alert clinicians to recognize markers of abuse. A retrospective review of infants <1 year of age admitted to a tertiary referral centre in Malaysia over a two year period with a diagnosis of head injury or abnormal computed tomography head scans was conducted to identify the clinical features pointing towards a diagnosis of NAHI by comparing the socio-demographics, presenting complaints, clinical features and the extent of hospital investigations carried out. NAHI infants were more likely to be symptomatic, under a non-related caregiver's supervision, and presented with inconsistent or no known mechanism of injury. Subdural haemorrhages were more common in NAHI infants. The history, mechanism of injury, presenting signs and symptoms as well as the nature of the injuries sustained are all valuable clues as to whether a head injury sustained during infancy is likely to be accidental or not.

Traumatic dissection of the vertebral artery in a toddler following a short fall

Spontaneous subarachnoid haemorrhage (SAH) in children is uncommon, but is sometimes seen after rupture of aneurysms, and in different disorders. Traumatic SAH is common after serious accidental head injury, but is also reported after child abuse with vigorous shaking. To avoid unnecessary accusations of innocent care givers, it is important not to misinterpret the findings as abusive head trauma in small children with SAH. In the presented case, a nearly two-year-old girl was brought to the hospital after a fall witnessed by her father. The girl was unconscious, with elevated intracranial pressure, SAH and bilateral retinal haemorrhage (RH). She was pronounced dead after 9h. Premortem angiography revealed a dissection of the right vertebral artery, and postmortem examination revealed a traumatic lesion deep in the neck, at the base of the skull. Cerebral edema, in combination with SAH and RH, is highly suggestive of abusive head trauma. However, no external lesions, no skeletal lesions, especially no long bone metaphyseal lesions, or subdural haematomas occurring at the same time as SAH, were found. There was no report of previous child abuse in the family. Based on the radiological and postmortem findings, we believe that an accidental fall caused a blunt force trauma with a subsequent dissection of the right vertebral artery. To our knowledge, accidental tear of one of the vertebral arteries, leading to SAH in a toddler, has previously not been described. Child abuse is an important exclusion diagnosis with serious legal implications.

Neuropathological changes in a lamb model of non-accidental head injury (the shaken baby syndrome)

Non-accidental head injury (NAHI), also termed the "shaken baby syndrome", is a major cause of death and severe neurological dysfunction in children under three years of age, but it is debated whether shaking alone is sufficient to produce brain injury and mortality or whether an additional head impact is required. In an attempt to resolve this question, we used a lamb model of NAHI since these animals have a relatively large gyrencephalic brain and weak neck muscles resembling those of a human infant. Three anaesthetised lambs of lower body weight than others in the experimental group died unexpectedly after being shaken, proving that shaking alone can be lethal. In these lambs, axonal injury, neuronal reaction and albumin extravasation were widely distributed in the hemispheric white matter, brainstem and at the craniocervical junction, and of much greater magnitude than in higher body weight lambs which did not die. Moreover, in the eyes of these shaken lambs, there was damage to retinal inner nuclear layer neurons, mild, patchy ganglion cell axonal injury, widespread Muller glial reaction, and uveal albumin extravasation. This study proved that shaking of a subset of lambs can result in death, without an additional head impact being required.

Abnormal neuroimaging is associated with early in-hospital seizures in pediatric abusive head trauma

BACKGROUND

Abusive head trauma (AHT) is a common condition in children. Little is known in this condition regarding the frequency of seizures, the factors associated with increased risk of seizures, or the association of seizures with outcome. We sought to determine frequency and risks for in-hospital seizures after AHT.

METHODS

This was a single-center, retrospective chart review study at a 270 bed tertiary care referral pediatric hospital.

RESULTS

A total of 54 cases of AHT were identified during the study period. During the first week following hospital admission, 33% of patients were observed to have clinical seizures. The occurrence of clinical seizures after admission was associated with findings on initial CT including midline shift, cerebral edema, and loss of gray white differentiation. MRI findings associated with clinical seizures after admission included midline shift, cerebral edema, infarction, and restricted diffusion. The presenting complaint of seizures or acute mental status changes well as a variety of abnormal imaging findings including gray white blurring, infarction, and edema were associated with short-term outcomes.

CONCLUSIONS

Specific neuroradiologic findings identify children at greater risk for seizures, both clinical and subclinical, following AHT. Clinical and subclinical seizures are common in the initial hospitalization for AHT.

Spinal subdural hemorrhage in abusive head trauma: a retrospective study

PURPOSE

To compare the relative incidence, distribution, and radiologic characteristics of spinal subdural hemorrhage after abusive head trauma versus that after accidental trauma in children.

MATERIALS AND METHODS

This study received prior approval from the Human Subjects Protection Office. Informed consent was waived. This study was HIPAA compliant. Two hundred fifty-two children aged 0-2 years treated for abusive head trauma at our institute between 1997 and 2009 were identified through retrospective chart review. A second group of 70 children aged 0-2 years treated at our institute for well-documented accidental trauma between 2003 and 2010 were also identified through retrospective chart review. All clinical data and cross-sectional imaging results, including computed tomographic and magnetic resonance imaging of the brain, spine, chest, abdomen, and pelvis, were reviewed for both of these groups. A Fisher exact test was performed to assess the statistical significance of the proportion of the spinal canal subdural hemorrhage in abusive head trauma versus that in accidental trauma.

RESULTS

In the abusive head trauma cohort, 67 (26.5%) of 252 children had evaluable spinal imaging results. Of these, 38 (56%) of 67 children had undergone thoracolumbar imaging, and 24 (63%) of 38 had thoracolumbar subdural hemorrhage. Spinal imaging was performed in this cohort 0.3-141 hours after injury (mean, 23 hours ± 27 [standard deviation]), with 65 (97%) of 67 cases having undergone imaging within 52 hours of injury. In the second cohort with accidental injury, only one (1%) of 70 children had spinal subdural hemorrhage at presentation; this patient had displaced occipital fracture. The comparison of incidences of spinal subdural hemorrhage in abusive head trauma versus those in accidental trauma was statistically significant (P < .001).

CONCLUSION

Spinal canal subdural hemorrhage was present in more than 60% of children with abusive head trauma who underwent thoracolumbar imaging in this series but was rare in those with accidental trauma.

Shaken baby syndrome in Switzerland: results of a prospective follow-up study, 2002-2007

Since the incidence of shaken baby syndrome in Switzerland was not known, we conducted a nationwide prospective follow-up study for a 5-year period (from 2002 to 2007). The data were collected through the Swiss Pediatric Surveillance Unit. Inclusion criteria were the presence, in a child <or=6 years of age, of 1) more than or equal to two clinical symptoms (altered consciousness, convulsions, respiratory irregularities, and bulging fontanel), 2) one eye finding (retinal hemorrhages, vitreous hemorrhages), 3) one MRI/CT finding (subdural hematoma, subarachnoid hematoma, and parenchymatous lesions), or 4) history of shaking. Exclusion criteria were age >6 years or documented accident/disease explaining symptoms/findings. To describe outcome, we used the King's Outcome Scale for Childhood Head Injury (KOSCHI). 56 cases were reported from 13 of 26 Swiss cantons, representing 80% of the Swiss population; 49 cases met the inclusion criteria. Preponderance of male infants was high (31 male and 18 female); median age at admission was 4 months (1-58). Clinical symptoms were present in 42 infants, retinal/vitreous hemorrhages in 39 infants, and pathological brain/head imaging in 46 infants. In 13 cases, the caregivers admitted shaking the child. Outcomes (KOSCHI 1-5; n = 47 patients) were death (KOSCHI 1) 8 (17.7%), vegetative state (KOSCHI 2) 0, severe disability (KOSCHI 3) 11 (22.2%), moderate disability (KOSCHI 4) 14 (31.1%), and good recovery (KOSCHI 5) 14 (28.8%). Based on these data, the incidence of shaken baby syndrome in Switzerland is 14 per 100 000 live births, which corresponds to the incidence in other Western countries. Demographic characteristics and outcomes of Swiss patients were comparable to published studies.

Comparison of accidental and nonaccidental traumatic brain injuries in infants and toddlers: demographics, neurosurgical interventions, and outcomes

OBJECT

Nonaccidental trauma has become a leading cause of death in infants and toddlers. Compared with children suffering from accidental trauma, many children with nonaccidental trauma present with injuries requiring neurosurgical management and operative interventions.

METHODS

A retrospective review was performed concerning the clinical and radiological findings, need for neurosurgical intervention, and outcomes in infants and toddlers with head injuries who presented to Albany Medical Center between 1999 and 2007. The Fisher exact probability test and ORs were computed for Glasgow Coma Scale (GCS) scores, hyperdense versus hypodense subdural collections, and discharge and follow-up King's Outcome Scale for Childhood Head Injury (KOSCHI) scores.

RESULTS

There were 218 patients, among whom 164 had sustained accidental trauma, and 54 had sustained nonaccidental trauma (NAT). The patients with accidental traumatic injuries were more likely to present with GCS scores of 13-15 (OR 6.95), and the patients with NATs with of GCS scores 9-12 (OR 6.83) and 3-8 (OR 2.99). Skull fractures were present in 57.2% of accidentally injured patients at presentation, and 15% had subdural collections. Skull fractures were present in 30% of nonaccidentally injured patients, and subdural collections in 52%. Patients with evidence of hypodense subdural collections were significantly more likely to be in the NAT group (OR 20.56). Patients with NAT injuries were also much more likely to require neurosurgical operative intervention. Patients with accidental trauma were more likely to have a KOSCHI score of 5 at discharge and follow-up (ORs 6.48 and 4.58), while patients with NAT had KOSCHI scores of 3a, 3b, 4a, and 4b at discharge (ORs 6.48, 5.47, 2.44, and 3.62, respectively), and 3b and 4a at follow-up.

CONCLUSIONS

Infant and toddler victims of NAT have significantly worse injuries and outcomes than those whose trauma was accidental. In the authors' experience, however, with aggressive intervention, many of these patients can make significant neurological improvements at subsequent follow-up visits.

Evidence of occurrence of intradural and subdural hemorrhage in the perinatal and neonatal period in the context of hypoxic Ischemic encephalopathy: an observational study from two referral institutions in the United Kingdom

The occurrence of subdural hemorrhage (SDH) on the convexities of the cerebral hemispheres is not an unusual finding in the setting of intrauterine, perinatal, or neonatal deaths, the hemorrhage usually presenting either as a thin film over the occipital poles or as a small infratentorial bleed. Working in 2 referral centers with over 30,000 deliveries per year, we routinely examine the dura macroscopically and histologically in nonmacerated fetuses over 24 weeks in gestation and in neonates. This paper describes our experience of intradural hemorrhage (IDH) and SDH associated with hypoxia. Our series comprises 25 fetuses and 30 neonates with obvious macroscopic intradural hemorrhage and hypoxia of varying degrees of severity diagnosed by systematic examination of the brain. Fetal gestational age ranged from 26-41/40 weeks (all no more than 24 hours from intrauterine death), while the 30 neonates lived for between 1 hour and 19 days. Simultaneously with IDH, frank SDH was seen in 2 of 3 of all cases (16 fetuses and 20 neonates). Intradural hemorrhage was more prominent in the posterior falx and tentorium, most likely because of the existence of 2 venous plexus at these sites. Our findings demonstrate that SDH and cerebral hypoxia are common associations of IDH and that SDH (often seen as a thin film ofhemorrhage) almost always occurs in association with diffuse falcine IDH. Diffuse IDH with SDH are more frequently associated with severe or moderate hypoxic ischemic encephalopathy (HIE), while mild or early HIE is more common with focal IDH without SDH.

Neuroimaging evaluation of non-accidental head trauma with correlation to clinical outcomes: a review of 57 cases

OBJECTIVE

To review the clinical presentation and neuroimaging findings in patients with high clinical suspicion for non-accidental trauma (NAT) of the head, to investigate associations between imaging findings and long-term neurologic outcome in abused children.

STUDY DESIGN

A retrospective review of 57 cases of NAT of the head from a single institution was performed. Neuroimaging studies (computed tomography [CT] and magnetic resonance imaging [MRI]) were reviewed by a senior neuroradiologist, a neuroradiology fellow, and a radiology resident. Clinical history and physical findings, including retinal examination, imaging, and follow-up assessment, were reviewed.

RESULTS

The mean time between the patient's arrival at the hospital and CT and MRI imaging was 2.9 hours and 40.6 hours, respectively. The most common clinical presentation was mental status changes, seen in 47% of patients. The most common neuroimaging finding was subdural hematoma, seen in 86% of patients. In the 47 patients who underwent both MRI and CT, 1 case of suspected NAT was missed on head CT. CT detected signs of global ischemia in all 11 patients who died (mean time after arrival at the hospital until undergoing CT, 1.1 hours). MRI detected additional signs of injury in patients who developed mild to moderate developmental delay.

CONCLUSION

CT was able to detect evidence of NAT of the head in 56 of 57 abused children included in our cohort and predicted severe neurologic injury and mortality. MRI was useful in detecting additional evidence of trauma, which can be helpful in risk stratification for neurologic outcomes as well in providing confirming evidence of repeated injury.

Abusive head trauma

Child physical abuse that results in injury to the head or brain has been described using many terms, including battered child syndrome, whiplash injuries, shaken infant or shaken impact syndrome, and nonmechanistic terms such as abusive head trauma or nonaccidental trauma. These injuries sustained by child abuse victims are discussed in detail in this article, including information about diagnosis, management and outcomes. The use of forensics, the use imaging studies, and associated injuries are also detailed.

Shaken baby syndrome: a common variant of non-accidental head injury in infants

BACKGROUND

Recent cases of child abuse reported in the media have underlined the importance of unambiguous diagnosis and appropriate action. Failure to recognize abuse may have severe consequences. Abuse of infants often leaves few external signs of injury and therefore merits special diligence, especially in the case of non-accidental head injury, which has high morbidity and mortality.

METHODS

Selective literature review including an overview over national and international recommendations.

RESULTS

Shaken baby syndrome is a common manifestation of non-accidental head injury in infancy. In Germany, there are an estimated 100 to 200 cases annually. The characteristic findings are diffuse encephalopathy and subdural and retinal hemorrhage in the absence of an adequate explanation. The mortality can be as high as 30%, and up to 70% of survivors suffer long-term impairment. Assessment of suspected child abuse requires meticulous documentation in order to preserve evidence as well as radiological, ophthalmological, laboratory, and forensic investigations.

CONCLUSIONS

The correct diagnosis of shaken baby syndrome requires understanding of the underlying pathophysiology. Assessment of suspected child abuse necessitates painstaking clinical examination with careful documentation of the findings. A multidisciplinary approach is indicated. Continuation, expansion, and evaluation of existing preventive measures in Germany is required.

Optical coherence tomography findings in Shaken Baby syndrome

PURPOSE

To evaluate features of optical coherence tomography (OCT) associated with Shaken Baby syndrome (SBS) in an attempt to gain new insight into the pathophysiology of this phenomenon.

DESIGN

Institutional prospective observational case series.

METHODS

We report three infants with SBS. Each patient underwent an ophthalmic examination including slit-lamp biomicroscopy, dilated indirect ophthalmoscopy, color fundus photography, and OCT.

RESULTS

In all infants, numerous bilateral multilayered retinal hemorrhages were present. In one case, bilateral perimacular folds had occurred. OCT confirmed retinal hemorrhages and perimacular folds. Moreover, OCT revealed vitreoretinal traction in all infants and suspected hemorrhagic macular retinoschisis in one case. Based on OCT findings, a hypothesis of vitreoretinal traction development and retinal fold formation is proposed.

CONCLUSIONS

OCT provided valuable additional information about the ocular pathology in patients with SBS. Vitreoretinal membrane formation seen in OCT could support the pathophysiological theory of a direct mechanical effect. OCT revealed preretinal blood accumulation as a cause for localized vitreous detachment and vitreoretinal traction. Furthermore, OCT showed persistent attachment of the vitreous to the internal limiting membrane at the apices of perimacular folds and suggested small hemorrhagic macular retinoschisis in one patient. Perimacular folds and hemorrhagic macular retinoschisis are regarded as highly specific for SBS and indicate poor visual outcome. Thus OCT might be of both diagnostic and prognostic value in SBS.

Update on child maltreatment

PURPOSE OF REVIEW

The authors discuss the significance of studies published over the previous year regarding assessment and treatment and prevention of child maltreatment, including physical and sexual abuse, inflicted traumatic brain injury, and child neglect.

RECENT FINDINGS

The evidence base for many forms of child abuse is growing. As clinicians begin to understand the factors which may increase child vulnerability to abuse, more sophisticated and focused prevention efforts are being implemented. In response to a very public reprimand by the General Medical Council of two child abuse pediatricians, which was felt by many to be unwarranted, the UK government re-emphasized its commitment to the protection of children. In the US, this well-publicized set of events has renewed the medical community's commitment to the recognition of child abuse pediatrics as a formal subspecialty. Several authors detail the short-term and long-term outcome of varying forms of abuse for children as they grow into adults, reinforcing the importance of community efforts to prevent abuse and support families during times of heightened stress such as the current war in Iraq.

SUMMARY

The short-term and long-term impact of child maltreatment is significant not only for individuals, but for families and communities where abuse is taking place. General pediatricians have an important role to play with families and in the community as advocates for the protection of children.

Shaken baby syndrome

Non-accidental head trauma in infants is the leading cause of infant death from injury. Clinical features that suggest head trauma (also known as shaken baby syndrome or shaken impact syndrome) include the triad consisting of retinal hemorrhage, subdural, and/or subarachnoid hemorrhage in an infant with little signs of external trauma. Abusive head injuries are among the most common causes of serious and lethal injuries in children. These injuries may result from impact or shaking or a combination of these mechanisms. These mechanisms cause the child's head to undergo acceleration/ deceleration movements, which may create inertial movement of the brain within the cranial compartment.

Update on shaken baby syndrome: ophthalmology

PURPOSE OF REVIEW

Shaken baby syndrome is a common problem with a high morbidity and mortality. Ophthalmologists help manage this condition and therefore must keep abreast of current advances.

RECENT FINDINGS

Clinical updates include the discovery that retinal folds and traumatic retinoschisis can very rarely occur after crush head injury, but remain specific for shaken baby syndrome in other scenarios. Pathology updates include new studies on orbital histology and woodpecker anatomy that suggest the retinal and optic nerve hemorrhages in shaken baby syndrome are caused by shaking itself rather than secondary to intracranial pathology. Regarding this shaking injury, some primary prevention strategies have proven surprisingly effective. In the near future, serum biomarkers may be used as a screening tool for inflicted neurotrauma. Animal models such as the neonatal pig and computer models using finite element analysis are promising experimental techniques for studying shaken baby syndrome. Finally, child abuse recently became an accredited subspecialty of pediatrics, which will lead to further advances in patient care, education, research and prevention.

SUMMARY

Ophthalmologists play a key role in the diagnosis of shaken baby syndrome. In addition, they are in a unique position to study ophthalmic aspects of the syndrome, which in turn furthers the overall understanding of this devastating condition.