Workplace Violence in the Pediatric Emergency Department: A National Survey of Physicians in the United States.

OBJECTIVES: Previous work shows that health care workers, and particularly emergency department (ED) staff, are at an above average risk of workplace violence (WPV), defined as verbal threats or physical violence in the workplace. Previous data suggest that staff of a single pediatric ED frequently feel unsafe. The objective of this study was to conduct the first national survey study to assess the prevalence and incidence of WPV in the pediatric ED. METHODS: In this cross-sectional survey study, a representative sample of US pediatric emergency medicine physicians were invited to participate in a national survey adapted from the previously validated Workplace Violence in the Health Sector questionnaire from the World Health Organization. The primary outcome measure was the proportion of physicians who have been exposed to WPV. Rates of exposure to violence, reporting habits, and physician perception of various violence prevention strategies were studied secondarily. RESULTS: Surveys were completed by 207 (45%) invited participants, representing 31 US children's hospitals. The prevalence of WPV exposure was 96%. Physical violence with a weapon was witnessed by 20% of participants. Injuries requiring medical attention or time off work were experienced by 10% of participants. Half of participants never reported violent events. Security guards were welcome by 99%, armed law enforcement officers by 70%, and metal detectors by 81% of physicians. Self-arming was opposed by 85% of respondents. CONCLUSIONS: Exposure to WPV is frequent among pediatric emergency medicine physicians with a prevalence similar to that of general emergency departments. Workplace violence remains underreported. This national survey contributes to the objective evaluation of individual- and systems-level violence prevention interventions.

Injury Rates, Patterns, Mechanisms, and Risk Factors Among Competitive Youth Climbers in the United States.

INTRODUCTION: Competitive rock climbing is a fast-growing sport. Despite comprehensive reviews on adult climbing-related injuries, few pediatric-specific reviews exist, and studies exclusively on competitive youth climbers are needed. Objectives of this study include 1) estimating the injury rate (IR); 2) describing injury patterns and mechanisms; and 3) identifying injury risk factors in competitive youth climbers. METHODS: The study design was cross-sectional. Competitive youth climbers were included. Participants completed an anonymous questionnaire to document climbing injuries over the preceding 12 mo. Demographic data and data regarding injuries were collected. The IR was calculated. Analyses were performed to assess association between injury and multiple variables. Multivariate logistic regression was completed for significant variables to control for exposure time. RESULTS: The IR was 2.7 injuries per 1000 climbing hours. Hand/Finger injuries were most frequent; chronic overuse was the most common etiology. Injury severity was low overall. Risk factors significantly associated with climbing injury were climbing discipline (bouldering > sport/lead climbing), return to climbing while still in pain, finger taping, higher number of hours climbed per session and per year, climbing at higher bouldering difficulties, and unsupervised climbing. CONCLUSIONS: The IR in competitive youth climbers was found to be lower than previously reported but higher than suggested by adult studies or those that exclude chronic injuries. Findings are consistent with types, severity, and mechanisms reported in other studies. Modifiable risk factors, especially return to climbing while still injured, warrant further prospective investigation.

Delayed Diagnosis of Injury in Pediatric Trauma Patients at a Level I Trauma Center.

BACKGROUND: Trauma care per Advanced Trauma Life Support addresses immediate threats to life. Occasionally, delays in injury diagnosis occur. Delayed diagnosis of injury (DDI) is a common quality indicator in trauma care, and pediatric DDI data are sparse. OBJECTIVE: Our aim was to describe the DDI rate in a severely injured pediatric trauma population and identify any factors associated with DDI in the pediatric population. METHODS: A prospective cohort of trauma activations in 0- to 16-year-old patients admitted to a pediatric level I trauma center over 12 months with injuries prospectively recorded were followed during admission to identify DDI. RESULTS: A total of 170 trauma activations were enrolled. Twelve patients had type I DDI (7.1%), 15 patients had type II DDI (8.8%), and 5 patients had both type I and type II DDI (2.9%). DDI patients had twice as many injuries and higher Injury Severity Scores (ISS) as non-DDI patients. DDI patients were more likely to require intensive care unit (ICU) admission, longer hospital stay, and ventilator support. Controlling for age and ISS in multivariate analysis, the number of injuries found and requiring a ventilator were significantly associated with DDI. CONCLUSIONS: This prospective study found a type I DDI rate of 7.1% and a type II DDI rate of 8.8% in the pediatric population. DDI patients had a greater number of injuries, higher ISS, higher rate of ICU admission, and were more likely to require mechanical ventilation. This study adds prospective data to the pediatric DDI literature, increases provider awareness of pediatric DDI, and lays the foundation for future study and quality improvement.

Team Approach: Pediatric Musculoskeletal Infection.

A team approach is optimal in the evaluation and treatment of musculoskeletal infection in pediatric patients given the complexity and uncertainty with which such infections manifest and progress, particularly among severely ill children. The team approach includes emergency medicine, pediatric intensive care, pediatric hospitalist medicine, infectious disease service, orthopaedic surgery, radiology, anesthesiology, pharmacology, and hematology. These services follow evidence-based clinical practice guidelines with integrated processes of care so that children and their families may benefit from data-driven continuous process improvement. Important principles based on our experience in the successful treatment of pediatric musculoskeletal infection include relevant information gathering, pattern recognition, determination of the severity of illness, institutional workflow management, closed-loop communication, patient and family-centered care, ongoing dialogue among key stakeholders within and outside the context of direct patient care, and periodic data review for programmatic improvement over time. Such principles may be useful in almost any setting, including rural communities and developing countries, with the understanding that the team composition, institutional capabilities or limitations, and specific approaches to treatment may differ substantially from one setting or team to another.

Nonmydriatic Fundoscopic Imaging Using the Pan Optic iExaminer System in the Pediatric Emergency Department.

OBJECTIVES: The primary objective of this study was to determine the percentage of clinically adequate (CA) fundoscopic images that could be obtained using the Pan Optic iExaminer system to perform nonmydriatic fundoscopic imaging in the pediatric emergency department (ED). Secondary objectives were to identify target age groups in which this technology is best utilized and evaluate the overall ease of use in this setting. METHODS: Children 18 years of age or less who presented to the pediatric ED with a non-eye-related chief complaint were enrolled and stratified by age group (0-2, 2-6, and 6-18 years). Each enrolled patient underwent a bilateral eye examination using the Pan Optic iExaminer system. Images were submitted for review to a pediatric ophthalmologist and were graded based on clarity and field of view. Ease of use was defined as 80% of patients having at least one image of quality to be considered "clinically adequate" for obtaining a full view of the optic nerve, examination time for both eyes 15 minutes or less, and three attempts or less for each eye. RESULTS: Overall, 91.06% (95% confidence interval [CI] = 86.01% to 96.1%) of children ages 2-18 years had at least one CA image obtained. A total of 16% (95% CI = 7% to 26%) of children 0-2 years, 85% (95% CI = 76% to 94.15%) of children 2-6 years, and 9% (95% CI = 92% to 100%) of 6-18 years had at least one CA image. The median total examination time was 3 minutes 24 seconds (interquartile range = 2 minutes 27 seconds to 4 minutes 49 seconds). CONCLUSION: Fundoscopic images were consistently obtained using the Pan Optic iExaminer system in the pediatric ED particularly in children 2-18 years of age. CA images were obtained in children less than 2 years old, but less consistently.

Corneal wound healing is compromised by immunoproteasome deficiency.

Recent studies have revealed roles for immunoproteasome in regulating cell processes essential for maintaining homeostasis and in responding to stress and injury. The current study investigates how the absence of immunoproteasome affects the corneal epithelium under normal and stressed conditions by comparing corneas from wildtype (WT) mice and those deficient in two immunoproteasome catalytic subunits (lmp7(-/-)/mecl-1(-/-), L7M1). Immunoproteasome expression was confirmed in WT epithelial cells and in cells of the immune system that were present in the cornea. More apoptotic cells were found in both corneal explant cultures and uninjured corneas of L7M1 compared to WT mice. Following mechanical debridement, L7M1 corneas displayed delayed wound healing, including delayed re-epithelialization and re-establishment of the epithelial barrier, as well as altered inflammatory cytokine production compared to WT mice. These results suggest that immunoproteasome plays an important role in corneal homeostasis and wound healing.

Benzonatate toxicity in a teenager resulting in coma, seizures, and severe metabolic acidosis.

We report a benzonatate overdose in a teenager resulting in life-threatening toxicity to increase awareness of this overdose, and discuss recent pediatric warnings and labeling information provided by the US Food and Drug Administration (FDA). After an overdose of benzonatate, a 13-yr-old female presented to our emergency department with coma, seizures, hypotension, prolonged QT interval on electrocardiogram, and metabolic acidosis. Benzonatate is an antitussive medication with sodium channel-blocking properties and local anesthetic effects on the respiratory stretch receptors due to a tetracaine-like metabolite. Overdose is reported to cause coma, seizures, hypotension, tachycardia, ventricular dysrhythmias, and cardiac arrest. The FDA recently issued a Drug Safety Communication warning that accidental benzonatate ingestion in children younger than 10 years of age have increased risk of death and added the new information to the Warnings and Precautions section of benzonatate's label.

Validation and refinement of a prediction rule to identify children at low risk for acute appendicitis.

OBJECTIVE: To validate and refine a clinical prediction rule to identify which children with acute abdominal pain are at low risk for appendicitis (Low-Risk Appendicitis Rule). DESIGN: Prospective, multicenter, cross-sectional study. SETTING: Ten pediatric emergency departments. PARTICIPANTS: Children and adolescents aged 3 to 18 years who presented with suspected appendicitis from March 1, 2009, through April 30, 2010. MAIN OUTCOME MEASURES: The test performance of the Low-Risk Appendicitis Rule. RESULTS: Among 2625 patients enrolled, 1018 (38.8% [95% CI, 36.9%-40.7%]) had appendicitis. Validation of the rule resulted in a sensitivity of 95.5% (95% CI, 93.9%-96.7%), specificity of 36.3% (33.9%-38.9%), and negative predictive value of 92.7% (90.1%-94.6%). Theoretical application would have identified 573 (24.0%) as being at low risk, misclassifying 42 patients (4.5% [95% CI, 3.4%-6.1%]) with appendicitis. We refined the prediction rule, resulting in a model that identified patients at low risk with (1) an absolute neutrophil count of 6.75 × 103/µL or less and no maximal tenderness in the right lower quadrant or (2) an absolute neutrophil count of 6.75 × 103/µL or less with maximal tenderness in the right lower quadrant but no abdominal pain with walking/jumping or coughing. This refined rule had a sensitivity of 98.1% (95% CI, 97.0%-98.9%), specificity of 23.7% (21.7%-25.9%), and negative predictive value of 95.3% (92.3%-97.0%). CONCLUSIONS: We have validated and refined a simple clinical prediction rule for pediatric appendicitis. For patients identified as being at low risk, clinicians should consider alternative strategies, such as observation or ultrasonographic examination, rather than proceeding to immediate computed tomographic imaging.

Interrater reliability of clinical findings in children with possible appendicitis.

OBJECTIVE: Our objective was to determine the interrater reliability of clinical history and physical examination findings in children undergoing evaluation for possible appendicitis in a large, multicenter cohort. METHODS: We conducted a prospective, multicenter, cross-sectional study of children aged 3-18 years with possible appendicitis. Two clinicians independently evaluated patients and completed structured case report forms within 60 minutes of each other and without knowing the results of diagnostic imaging. We calculated raw agreement and assessed reliability by using the unweighted Cohen κ statistic with 2-sided 95% confidence intervals. RESULTS: A total of 811 patients had 2 assessments completed, and 599 (74%) had 2 assessments completed within 60 minutes. Seventy-five percent of paired assessments were completed by pediatric emergency physicians. Raw agreement ranged from 64.9% to 92.3% for history variables and 4 of 6 variables had moderate interrater reliability (κ > .4). The highest κ values were noted for duration of pain (κ = .56 [95% confidence intervals .51-.61]) and history of emesis (.84 [.80-.89]). For physical examination variables, raw agreement ranged from 60.9% to 98.7%, with 4 of 8 variables exhibiting moderate reliability. Among physical examination variables, the highest κ values were noted for abdominal pain with walking, jumping, or coughing (.54 [.45-.63]) and presence of any abdominal tenderness on examination (.49 [.19-.80]). CONCLUSIONS: Interrater reliability of patient history and physical examination variables was generally fair to moderate. Those variables with higher interrater reliability are more appropriate for inclusion in clinical prediction rules in children with possible appendicitis.

Halofuginone down-regulates Smad3 expression and inhibits the TGFbeta-induced expression of fibrotic markers in human corneal fibroblasts.

PURPOSE: Due to its ability to disrupt transforming growth factor beta (TGF-ß) signaling, halofuginone has been successfully used to treat various fibrotic disorders. Here we investigated the antifibrotic potential of halofuginone in human corneal fibroblasts. METHODS: Human corneal fibroblasts were isolated from human donor corneas for in vitro experiments. TGF-ß was used to stimulate pro-fibrotic responses from corneal fibroblasts under halofuginone treatment. The expression of alpha smooth muscle actin (α-SMA) and fibronectin was analyzed by western blots. Phalloidin toxin was used to stain cultures for stress fiber assemblies. Quantitative reverse transcription PCR (qRT-PCR) and immunostaining were used to analyze the expression of type I collagen mRNA and protein, respectively. The expression of Smad2, Smad3, phospho-Smad2, and phospho-Smad3 was determined by western blots. RESULTS: Halofuginone was well tolerated by human corneal fibroblasts up to 10 ng/ml as demonstrated by a cell viability assay. At this concentration, TGF-ß-induced expression of the fibrotic markers α-SMA, fibronectin, and type I collagen was significantly reduced. Interestingly, under our experimental conditions, halofuginone treatment led to reduced protein expression of Smad3, which was both dose- and time-dependent. CONCLUSIONS: Our results suggest that halofuginone may exert its antifibrotic effects in the cornea via a novel molecular mechanism and may be used as an antifibrotic agent for corneal fibrosis treatment.

Cryptorchid testicular torsion.

Torsion of the testicle is a well-recognized urological emergency. Torsion of the cryptorchid testicle, however, is described in the urology literature, but not well recognized in the emergency department. We discuss a case of a torsed cryptorchid testicle and review the pathophysiology, imaging modalities, and prognosis.

Amylase and lipase measurements in paediatric patients with traumatic pancreatic injuries.

INTRODUCTION: Pancreatic injuries occur in up to 10% of paediatric patients who suffer blunt trauma. Initial amylase and lipase measurements have not been helpful as a screening tool to detect pancreatic injuries. However, one primarily adult study suggests that a delayed measurement may be useful. MATERIALS AND METHODS: A retrospective chart review was conducted of patients admitted to a Level I paediatric trauma centre from April 1996 to November 2006 with traumatic pancreatic injuries. RESULTS: The trauma database identified 51 patients with traumatic pancreatic injuries. Inclusion and exclusion criteria were met by 26 patients. Patients with initial amylase and lipase levels measured greater than 2h post-injury were more consistently elevated compared to those patients who had levels measured at 2h or less post-injury. There was a significant association between time of measurement and an increased amylase level (p=0.012). No significant association was found for lipase measurements (p=0.178). DISCUSSION AND CONCLUSIONS: In children with blunt pancreatic injury, elevated serum amylase levels were seen in a significantly higher percentage of patients with initial measurements at greater than 2h post-injury compared to those measured at 2h or less. Lipase measurements demonstrated a similar trend. Delayed amylase and lipase measurements may be helpful to detect pancreatic injuries, but further study is needed.

Prudent layperson definition of an emergent pediatric medical condition.

This study was designed to assess how well parents rated pediatric medical conditions based on their perceived degree of urgency so as to determine if the "Prudent Layperson Standard'' is reasonable. A self-administered, supervised survey was given to a convenience sample of 340 caregivers in the emergency department of an urban children's hospital. Respondents were asked to rank the urgency of 15 scenarios. A caregiver response within 1 point of the physician score was considered concordant with medical opinion. A 2-week-old infant with a rectal temperature of 103.7 degrees F was the only emergent scenario underestimated by caregivers. A 1 1/2-yr-old child with an upper respiratory tract infection, a 7-year-old child with ringworm, an 8-month-old infant with a simple forehead contusion, and a 4-year-old child with conjunctivitis were the non-urgent scenarios overestimated by caregivers. Laypeople are able to identify cases constructed to represent obvious pediatric medical emergencies. Several patient subgroups frequently overestimate medical urgency.