Clinical Characteristics of Acute Hematogenous Osteomyelitis With and Without Subperiosteal Abscesses in the Acute Care Setting.

BACKGROUND: Acute hematogenous osteomyelitis (AHO) is a common pediatric disease that can progress to involve nearby structures leading to complications including subperiosteal abscesses (SPAs). Those with SPAs, in particular, often require surgical intervention for complete treatment. Staphylococcus aureus remains one of the most common causes of AHO. With the emergence of community-associated methicillin-resistant Ataphylococcus aureus and its propensity to form abscesses, there has been an observed increased frequency of AHO with SPAs in children. Although magnetic resonance imaging (MRI) remains the gold standard of imaging for AHO, it is not readily available on a 24/7 basis and often necessitates procedural sedation in children. Delay in MRI and surgical intervention in patients with SPAs may lead to increased complications. The goal of this study is to identify, using clinical features easily obtained in the acute care setting, patients at high risk for AHO with SPAs who may benefit from emergent MRI and/or surgical intervention. DESIGN/METHODS: A retrospective chart review of patients aged birth to younger than 18 years diagnosed with AHO, who presented to a tertiary pediatric hospital from June 10, 2012, to November 1, 2017, were evaluated. Demographic, clinical, laboratory, and imaging data were collected. Patients were divided into 2 groups: AHO alone and AHO with SPAs. RESULTS: A final cohort of 110 subjects were included and analyzed. Of these, 73 (66%) were identified as having AHO alone and 37 (33.6%) as having AHO with SPAs. Patients had a higher risk of AHO with SPAs if they had a history of fever, decreased range of motion, edema, or elevated laboratory studies including white blood cell, absolute neutrophil count, erythrocyte sedimentation rate, and C-reactive protein. C-reactive protein was shown to have the highest correlation of AHO with SPAs, with an optimal cut point of 10.3 mg/dL, yielding a sensitivity of 67.7% and specificity of 77.6%. Patients with AHO with SPAs were at higher risk of having a positive blood culture for methicillin-resistant Staphylococcus aureus. CONCLUSIONS: Clinicians in acute care settings should have a high index of suspicion of AHO with SPAs in children with history of fever, decreased range of motion, or elevated laboratory values (white blood cell, absolute neutrophil count, erythrocyte sedimentation rate, and C-reactive protein). In particular, those with a significantly elevated CRP are at a higher risk for having AHO with SPAs in comparison with an uncomplicated AHO. However, with the significant overlap in historical and clinical variables in the initial presentations of children with AHO with and without SPAs, the clinical urgency in obtaining a magnetic resonance imaging must continue to be individualized based on overall clinical suspicion and availability of resources.

Impact of Guidelines Regarding Brief Resolved Unexplained Events on Care of Patients in a Pediatric Emergency Department.

OBJECTIVES: This study aimed to determine if the 2016 clinical practice guidelines regarding brief resolved unexplained events (BRUE) impacted our institutional approach to infants with BRUE. We sought to determine the statement's impact on admission rates, emergency department (ED) length of stay, and return ED visits or readmissions. METHODS: We conducted a retrospective chart review of patients who presented to the ED at a tertiary pediatric hospital from January 2014 to June 2019. Diagnostic workup (laboratory testing, imaging, monitoring) in the ED was recorded. Cohorts of patients presenting pre- and post-2016 guideline were compared using χ2 and t tests. Subanalysis of higher-risk and lower-risk infant groups was also performed. RESULTS: The demographics of the 2 cohorts were not significantly different. Comparison showed significant reductions in invasive testing after the guideline, both overall (P = 0.005), and specifically regarding comprehensive metabolic panel, blood culture, urine culture, and chest x-ray. Infants meeting higher-risk criteria also showed decreases in invasive testing (P = 0.02). Admission to the hospital and ED lengths of stay decreased in the post-American Academy of Pediatrics statement cohort (P < 0.001 and P = 0.007, respectively). There were no increases in readmissions or repeat ED visits. CONCLUSIONS: This study revealed significant reduction in invasive testing, shorter lengths of ED stays, and lower admission rates at a tertiary care children's hospital after the release of the American Academy of Pediatrics BRUE guideline with no increase in return ED visits or readmissions.