Kathi L. Makoroff

Abusive Head Trauma During a Time of Increased Unemployment: A Multicenter Analysis

OBJECTIVE: To evaluate the rate of abusive head trauma (AHT) in 3 regions of the United States before and during an economic recession and assess whether there is a relationship between the rate of AHT and county-level unemployment rates. METHODS: Clinical data were collected for AHT cases diagnosed in children younger than 5 years from January 1, 2004 until June 30, 2009, by hospital-based child protection teams within 3 geographic regions. The recession was defined as December 1, 2007 through June 30, 2009. Quarterly unemployment rates were collected for every county in which an AHT case occurred. RESULTS: During the 5½-year study period, a total of 422 children were diagnosed with AHT in a 74-county region. The overall rate of AHT increased from 8.9 in 100 000 (95% confidence interval [CI]: 7.8–10.0) before the recession to 14.7 in 100 000 (95% CI: 12.5–16.9) during the recession (P < .001). There was no difference in the clinical characteristics of subjects in the prerecession versus recession period. There was no relationship between the rate of AHT and county-level unemployment rates. CONCLUSIONS: The rate of AHT increased significantly in 3 distinct geographic regions during the 19 months of an economic recession compared with the 47 months before the recession. This finding is consistent with our understanding of the effect of stress on violence. Given the high morbidity and mortality rates for children with AHT, these results are concerning and suggest that prevention efforts might need to be increased significantly during times of economic hardship.

Mechanisms, Clinical Presentations, Injuries, and Outcomes From Inflicted Versus Noninflicted Head Trauma During Infancy: Results of a Prospective, Multicentered, Comparative Study

OBJECTIVE. Our goal was to conduct a prospective, multicentered, comparative study that would objectively verify and explain observed differences in short-term neurodevelopmental outcomes after inflicted versus noninflicted head trauma. METHODS. Children <36 months of age who were hospitalized with acute head trauma confirmed by computed tomography imaging were recruited at multiple sites. Extensive clinical data were captured prospectively, subjects were examined, cranial imaging studies were blindly reviewed, and caregivers underwent scripted interviews. Follow-up neurodevelopmental evaluations were completed 6 months after injury. Head-trauma etiology and mechanisms were categorized by using objective a priori criteria. Thereafter, subject groups with inflicted versus noninflicted etiologies were compared. RESULTS. Fifty-four subjects who met the eligibility criteria were enrolled at 9 sites. Of 52 surviving subjects, 27 underwent follow-up assessment 6 months after injury. Etiology was categorized as noninflicted in 30 subjects, inflicted in 11, and undetermined in 13. Compared with subjects with noninflicted head trauma, subjects with inflicted head trauma (1) more frequently experienced noncontact injury mechanisms, (2) sustained greater injury depth, (3) more frequently manifested acute cardiorespiratory compromise, (4) had lower initial Glasgow Coma Scale scores, (5) experienced more frequent and prolonged impairments of consciousness, (6) more frequently demonstrated bilateral, hypoxic-ischemic brain injury, (7) had lower mental developmental index scores 6 months postinjury, and (8) had lower gross motor quotient scores 6 months postinjury. CONCLUSIONS. Compared with infants with noninflicted head trauma, young victims of inflicted head trauma experience more frequent noncontact injury mechanisms that result in deeper brain injuries, cardiorespiratory compromise, diffuse cerebral hypoxia-ischemia, and worse outcomes.

Utility of hepatic transaminases to recognize abuse in children.

OBJECTIVE: Although experts recommend routine screening of hepatic transaminases (aspartate aminotransferase [AST] and alanine aminotransferase [ALT]) in cases of potential child physical abuse, this practice is highly variable. Our objective was to determine the sensitivity and specificity of routine transaminase testing in young children who underwent consultation for physical abuse. PATIENTS AND METHODS: This was a prospective, multicenter, observational study of all children younger than 60 months referred for subspecialty evaluation of possible physical abuse. The child abuse team at each center recommended screening transaminases routinely as standard of care for all cases with a reasonable concern for physical abuse. Sensitivity and specificity for transaminases and clinical examination findings to detect identified abdominal injuries were determined, and receiver operating characteristic analysis was undertaken. RESULTS: Of 1676 consultations, 1272 (76%) patients underwent transaminase testing, and 54 (3.2% [95% confidence interval: 2.4–4.2]) had identified abdominal injuries. Area under the curve for the highest level of either transaminase was 0.85. Using a threshold level of 80 IU/L for either AST or ALT yielded a sensitivity of 77% and a specificity of 82% (positive likelihood ratio: 4.3; negative likelihood ratio: 0.3). Of injuries with elevated transaminase levels, 14 (26%) were clinically occult, lacking abdominal bruising, tenderness, and distention. Several clinical findings used to predict abdominal injury had high specificity but low sensitivity. CONCLUSIONS: In the population of children with concern for physical abuse, abdominal injury is an important cause of morbidity and mortality, but it is not so common as to warrant universal imaging. Abdominal imaging should be considered for potentially abused children when either the AST or ALT level is >80 IU/L or with abdominal bruising, distention, or tenderness.

Elevated lactate as an early marker of brain injury in inflicted traumatic brain injury

Background: Traumatic brain injury is a major cause of disability and death in the pediatric population. The metabolic and neurochemical abnormalities that underlie traumatic brain injury remain poorly understood, but hypoxia-ischemic injury might play an important role. Objective: This study evaluated children with inflicted traumatic brain injury using magnetic resonance spectroscopy (MRS). We postulated that children with hypoxic-ischemic injury indicated by elevated lactate in the acute phase of injury will have worse early neurological status and short-term clinical outcomes than those without lactate upon MRS. Materials and methods: This prospective study employed proton MRS to sample bilaterally the frontal lobes and the parasagittal cortex within the parietal and occipital lobes of 11 patients with inflicted traumatic brain injury who were undergoing a clinical MRI examination. Patients’ measured clinical course while hospitalized included initial neurological evaluation, presence of seizure activity, need for admission to the pediatric intensive care unit (PICU), number of days hospitalized, presence of retinal hemorrhages and presence of bone fractures. Measurement of outcome was determined using the Pediatric Overall Performance Category Scale (POPCS; 1 = good performance; 6 = death). Results: Four children demonstrated elevated lactate and diminished N-acetyl aspartate (a neuronal marker) within several regions, indicating global ischemic injury (lactate-positive global group). These four children all had seizure activity and abnormal initial neurological examinations and required admission to the PICU. The mean POPCS for this group was 3.25. In four other children, lactate was detected within at least one region, indicating a focal ischemic injury (lactate-positive focal group); two of these children had seizure activity, and two had an abnormal initial neurological examination. The mean POPCS score was 1.5 for this group. The remaining three children had no evidence of lactate upon MRS (lactate-negative group). These children did not have seizure activity, did not require admission to the PICU, nor did they have initial abnormal neurological examinations. The mean POPCS score was 1.3 for this group. Summary: Patients with inflicted traumatic brain injury and evidence of hypoxic-ischemic injury as indicated by elevated lactate on MRS tend to have worse early neurological status and early outcome scores. Lactate levels as sampled by MRS might predict early clinical outcome in inflicted traumatic brain injury.

Risk Factors for Mortality in Children with Abusive Head Trauma

OBJECTIVE We sought to identify risk factors for mortality in a large clinical cohort of children with abusive head trauma. STUDY DESIGN Bivariate analysis and multivariable logistic regression models identified demographic, physical examination, and radiologic findings associated with in-hospital mortality of children with abusive head trauma at 4 pediatric centers. An initial Glasgow Coma Scale (GCS) ≤ 8 defined severe abusive head trauma. Data are shown as OR (95% CI). RESULTS Analysis included 386 children with abusive head trauma. Multivariable analysis showed children with initial GCS either 3 or 4-5 had increased mortality vs children with GCS 12-15 (OR = 57.8; 95% CI, 12.1-277.6 and OR = 15.6; 95% CI, 2.6-95.1, respectively, P < .001). Additionally, retinal hemorrhage (RH), intraparenchymal hemorrhage, and cerebral edema were independently associated with mortality. In the subgroup with severe abusive head trauma and RH (n = 117), cerebral edema and initial GCS of 3 or 4-5 were independently associated with mortality. Chronic subdural hematoma was independently associated with survival. CONCLUSIONS Low initial GCS score, RH, intraparenchymal hemorrhage, and cerebral edema are independently associated with mortality in abusive head trauma. Knowledge of these risk factors may enable researchers and clinicians to improve the care of these vulnerable children.

Has this prepubertal girl been sexually abused

CONTEXT The legal and social sequelae of interpreting genital findings as indicative of sexual abuse are significant. While the absence of genital trauma does not rule out sexual abuse, the physical examination can identify genital findings compatible with sexual abuse. OBJECTIVES To determine the diagnostic utility of the genital examination in prepubertal girls for identifying nonacute sexual abuse. DATA SOURCES Published articles (1966-October 2008) that appeared in the MEDLINE database and were indexed under the search terms of child abuse, sexual or child abuse and either physical examination; genitalia; female, diagnosis; or sensitivity and specificity; and bibliographies of retrieved articles and textbooks. STUDY SELECTION Three of the authors independently reviewed titles of articles obtained from MEDLINE and selected articles for full-text review. DATA EXTRACTION Two authors independently abstracted data to calculate sensitivity, specificity, and likelihood ratios for the diagnosis of nonacute genital trauma caused by sexual abuse in prepubertal girls. RESULTS Data were not pooled due to study heterogeneity. The presence of vaginal discharge (positive likelihood ratio, 2.7; 95% confidence interval, 1.2-6.0) indicates an increased likelihood of sexual abuse. In the posterior hymen, hymenal transections, deep notches, and perforations prompt concerns for genital trauma from sexual abuse, but the sensitivity is unknown. Without a history of genital trauma from sexual abuse, the majority of prepubertal girls will not have a hymenal transection (specificity close to 100%). CONCLUSIONS Vaginal discharge as well as posterior hymenal transections, deep notches, and perforations raise the suspicion for sexual abuse in a prepubertal girl, but the findings do not independently confirm the diagnosis. Given the broad 95% confidence intervals around the likelihood ratios for the presence of findings along with the low or unknown sensitivity of all physical examination findings evaluated, the physical examination cannot independently confirm or exclude nonacute sexual abuse as the cause of genital trauma in prepubertal girls.

Clinical predictors of outcome following inflicted traumatic brain injury in children

BACKGROUND The study aimed to determine which acute injury variables were predictors of long-term functional outcome following inflicted traumatic brain injury (iTBI). METHODS A retrospective case review of 35 children with iTBI was performed. After controlling for age at injury and time since injury, the generalized estimation equations method was used to identify acute injury variables that were significantly related to the Glasgow Outcome Scale scores at the initial follow-up assessments. When available, functional sequelae at these and longer-term follow-ups were also examined. RESULTS In bivariate generalized estimation equations analyses, a low Glasgow Coma Scale (GCS) eye component score, a low GCS motor component score, a low GCS verbal component score, need for neurosurgical intervention, seizures in the first week after injury, need for mechanical ventilation for more than 10 days, length of intensive care unit stay of more than 10 days, initial hyperglycemia, and neuroimaging findings of cerebral edema or loss of gray-white matter differentiation were significantly (p ⩽ 0.05) related to having a poor outcome, as defined by their Glasgow Outcome Scale score at the initial follow-up. In multivariable analyses, considering the significant predictors while controlling for age at injury and time since injury, the presence of cerebral edema on neuroimaging (odds ratio, 27.21; 95% confidence interval, 4.40–168.22), and length of intensive care unit stay of more than 10 days (odds ratio, 21.57; 95% confidence interval, 3.09–150.48) were significantly related to having a poor outcome. CONCLUSION Early clinical data following iTBI help predict long-term functional outcome. Further research to support these findings may help delineate acutely after injury which children with iTBI are at risk for a poor prognosis and should be more closely followed up over time. LEVEL OF EVIDENCE Prognostic study, level IV.

A Pilot Randomized Trial of an Online Parenting Skills Program for Pediatric Traumatic Brain Injury: Improvements in Parenting and Child Behavior

This pilot study examined changes in parenting skills and child behavior following participation in an online positive parenting skills program designed for young children with traumatic brain injury (TBI). Thirty-seven families with a child between 3 and 9 years of age who sustained a moderate to severe TBI were randomly assigned to one of two interventions: online parenting skills training (n=20) or access to Internet resources on managing brain injury (n=17). Parent-child interaction observations and parent ratings of child behavior were collected pre- and post-treatment. Generalized estimating equations and mixed models were used to examine changes in parenting skills and child behavior problems as well as the moderating role of family income on treatment response. Participants in the parenting skills group displayed significant improvements in observed positive parenting skills relative to participants in the Internet resource group. Income moderated improvements in parent ratings of child behavior, with participants in the low-income parenting skills group and high-income Internet resource group reporting the greatest improvements in behavior. This is the first randomized controlled trial examining online parenting skills training for families of young children with TBI. Improvements in positive parenting skills and child behavior support the utility of this intervention, particularly for families from lower socioeconomic backgrounds.

Prior opportunities to identify abuse in children with abusive head trauma

Infants with minor abusive injuries are at risk for more serious abusive injury, including abusive head trauma (AHT). Our study objective was to determine if children with AHT had prior opportunities to detect abuse and to describe the opportunities. All AHT cases from 7/1/2009 to 12/31/2011 at four tertiary care childrens hospitals were included. A prior opportunity was defined as prior evaluation by either a medical or child protective services (CPS) professional when the symptoms and/or referral could be consistent with abuse but the diagnosis was not made and/or an alternate explanation was given and accepted. Two-hundred-thirty-two children with AHT were identified; median age (IQR) was 5.40 (3.30, 14.60) months. Ten percent (22/232) died. Of the 232 patients diagnosed with AHT, 31% (n=73) had a total of 120 prior opportunities. Fifty-nine children (25%) had at least one prior opportunity to identify abuse in a medical setting, representing 98 prior opportunities. An additional 14 (6%) children had 22 prior opportunities through previous CPS involvement. There were no differences between those with and without a prior opportunity based on age, gender, race, insurance, mortality, or institution. Children with prior opportunities in a medical setting were more likely to have chronic subdural hemorrhage (48 vs. 17%, p<0.01) and healing fractures (31 vs. 19%, p=0.05). The most common prior opportunities included vomiting 31.6% (38/120), prior CPS contact 20% (24/120), and bruising 11.7% (14/120). Improvements in earlier recognition of AHT and subsequent intervention might prevent additional injuries and reduce mortality.

Association of perpetrator relationship to abusive head trauma clinical outcomes

The diagnosis of abusive head trauma (AHT) remains a significant public health problem with limited prevention success. Providing protection from further harm is often challenged by the difficulty in identifying the alleged perpetrator (AP) responsible for this pediatric trauma. The objective of this study was to evaluate demographic and clinical characteristics of children with AHT and the relationship between APs and their victims in a large, multi-site sample. Understanding the AHT risks from various caregivers may help to inform current prevention strategies. A retrospective review of all cases of AHT diagnosed by child protection teams (CPT) from 1/1/04 to 6/30/09 at four childrens hospitals was conducted. Clinical characteristics of children with AHT injured by non-parental perpetrators (NPP) were compared to parental perpetrators (PP). There were 459 children with AHT; 313 (68%) had an identified AP. The majority of the 313 children were <1 year of age (76%), Caucasian (63%), male (58%), receiving public assistance (80%), and presented without a history of trauma (62%); mortality was 19%. Overall, APs were: father (53%), parent partner (22%), mother (8%), babysitter (8%), other adult caregiver (5%); NPP accounted for 39% of APs. NPPs were more likely to cause AHT in children ≥ 1 year (77% vs. 23%, p<0.001) compared to PP. Independent associations to NPP included: older child, absence of a history of trauma, retinal hemorrhages, and male perpetrator gender. While fathers were the most common AP in AHT victims, there is a significant association for increased risk of AHT by NPPs in the older child, who presents with retinal hemorrhages, in the hands of a male AP. Further enhancement of current prevention strategies to address AHT risks of non-parental adults who provide care to children, especially in the post-infancy age seems warranted.