Objectives Chest radiography has been the preferred imaging study to assess pulmonary congestion. However, chest radiography interpretation is influenced by the level of expertise and high interobserver variability. Lung ultrasound (US) may produce more objective findings through evaluation of vertical comet tail artifacts known as B‐lines, which are created by a decrease in the ratio of alveolar air to fluid pulmonary content. Few studies have directly compared chest radiography to bedside US against a reference standard for the diagnosis of pulmonary edema. This study compared the sensitivity and specificity of bedside US and chest radiography in diagnosing pulmonary edema. Methods This prospective observational cohort study involved adult patients presenting to the emergency department of an urban tertiary hospital with dyspnea. The primary outcome was the presence or absence of pulmonary edema, as indicated by B‐lines on a bedside lung US examination or radiologist‐interpreted chest radiography. Patients underwent a US examination within about 1 hour of chest radiography. The final diagnosis from the discharge summary served as the reference standard. Results Ninety‐nine patients were enrolled; 32.3% had congestive heart failure, and 40.4% had chronic obstructive pulmonary disease. Bedside US showed significantly higher sensitivity (96%) compared to chest radiography (65%; P < .001). Of 18 patients with negative radiographic findings and a discharge diagnosis of pulmonary edema, 16 (89%) had positive US findings (P < .001). Conclusions Bedside US has the potential to identify pulmonary edema more accurately than chest radiography. As current practice within the United States uses chest radiography, reflecting American College of Cardiology Foundation/American Heart Association guidelines for management of heart failure, the results of this study warrant further evaluation.

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Social determinants of health (SDH) in uence emergency department (ED) use among children with asthma. We aimed to examine if SDH were more strongly associated with ED use among children with moderate/severe compared to mild asthma. This study utilized the 2016-2019 data from the National Survey of Children's Health. Children with asthma ages 0-17 years (N=9,937) were included in the analysis. Asthma severity and all-cause ED use in the past year were reported by caregivers. The association between patient factors and ED visits was evaluated using ordinal logistic regression. Based on the study sample, 29% of children with asthma had moderate/severe asthma. In the mild group, 30% visited the ED at least once in the past 12 months, compared to 49% in the moderate/severe group. SDH associated with ED visits included race/ethnicity, insurance coverage, and parental educational attainment, but the strength of these associations did not vary according to asthma severity. In a nationally-representative data set, SDH were equally predictive of ED use regardless of children's asthma severity. Interventions to reduce ED use among children with asthma should be considered for children with any severity of asthma, especially children in socially disadvantaged groups at higher risk of ED utilization.

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