Virtual Interviews and the Pediatric Emergency Medicine Match Geography: A National Survey.

Introduction: Virtual interviews (VI) are now a permanent part of pediatric emergency medicine (PEM) recruitment, especially given the cost and equity advantages. Yet inability to visit programs in person can impact decision-making, leading applicants to apply to more programs. Moreover, the cost advantages of VI may encourage applicants to apply to programs farther away than they might otherwise have been willing or able to travel. This could create unnecessary strain on programs. We conducted this study to determine whether PEM fellowship applicants would apply to a larger number of programs and in different geographic patterns with VI (2020 and 2021) as compared to in-person interviews (2018 and 2019). Methods: We conducted an anonymous national survey of all PEM fellows comparing two cohorts: current fellows who interviewed inperson (applied in 2018/2019) and fellows who underwent VIs in 2020/2021 (current fellows and those recently matched in 2021). The study took place in March-April 2022. Questions focused on geographic considerations during interviews and the match. We used descriptive statistics, chi-square and t-tests for analysis. Results: Overall response rate was 42% (231/550); 32% (n = 74) interviewed in person and 68% (n = 157) virtually. Fellows applied to a median of 4/6 geographic regions (interquartile range 2, 5). Most applied for fellowship both in the same region as residency (216, 93%) and outside (192, 83%). Only the Pacific region saw a statistically significant increase in applicants during VI (59.9% vs 43.2%, P = 0.02). There was no statistical difference in the number of programs applied to during in-person vs VI (mean difference (95% confidence interval 0.72, -2.8 - 4.2). A majority matched in their preferred state both during VI (60.4%) and in-person interviews (65.7%). The difference was not statistically significant (P = 0.45). Conclusion: While more PEM fellowship applicants applied outside the geographic area where their residency was and to the Pacific region, there was no overall increase in the number of programs or geographic areas PEM applicants applied to during VI as compared to in-person interview seasons. As this was the first two years of VI, ongoing data collection will further identify trends and the impactof VI.

Pediatric Emergency Medicine and Mentoring: What Women Want.

BACKGROUND: Women in medicine have reported gender-specific obstacles to career success, such as a dearth of mentors and role models. Pediatric emergency medicine (PEM) is a female-dominated subspecialty of pediatrics yet is still impacted by gender inequality in many areas. No previous study has explored mentoring experiences of women PEM physicians and the impact on their career trajectory. We sought to explore the experiences of female PEM physicians with mentorship to determine aspects of mentoring that were successful or unsuccessful. METHODS: This was a qualitative study with criterion sampling of female PEM physicians. Members of the American Academy of Pediatrics Section of Emergency Medicine completed semistructured interviews in 2022, recorded and transcribed verbatim. Our research team consisted of 3 PEM physicians. Using the constant comparative method, we analyzed transcripts by inductively developing codes, grouping codes into categories, and refining codes, descriptions, and group assignments to identify themes. Interpretations of and relationships among themes were iteratively discussed and revised by the team. RESULTS: Twenty-two participants were interviewed via telephone. The mean age of participants was 44 years old, and the majority (73%) identified as White, non-Hispanic, and at the rank of assistant professor (45%). Four themes were identified: (1) benefits of mentorship (recognition of need for mentorship and finding professional success), (2) finding mentors (processes to find mentors and mentor roles), (3) characteristics of successful mentors (personal and professional), and (4) impact of mentorship (career advancement or career sabotage). CONCLUSIONS: We identified 4 themes that could be incorporated into mentoring programs and are associated with successful experiences for women PEM physicians. The detail and descriptions in our data provide guidance for mentoring programs that specifically address the needs of women in PEM.

Building Blocks-A Block-by-Block Approach to Better Emergency Care in Children.

OBJECTIVE: We describe a case series of regional nerve blocks, which comprise an adapted framework for the pediatric emergency setting and were performed by pediatric emergency medicine physicians. METHODS: A case series of 8 different ultrasound-guided nerve blocks and 1 anatomical block, performed in 11 pediatric patients, aged 7 weeks to 17 years. RESULTS: All blocks resulted in adequate analgesia. No procedural complications were observed. CONCLUSION: We describe a set of nerve blocks performed by emergency medicine physicians in the pediatric population in an ED setting. In suitable settings, this is a safe and effective tool for procedural analgesia or for pain management. In such cases, performing an ultrasound-guided nerve block in the ED is a viable alternative for repeated doses of opiates, deep procedural sedation, or the operating theater. We propose this set of regional anesthesia procedures as a pediatric-adapted toolkit for the emergency physician to be performed in children in the ED setting. Adopting this set of procedures ensures better and safer care for children and provides a training framework for pediatric ED physicians.

Revisiting dexamethasone use in the pediatric emergency department.

PURPOSE OF REVIEW: Dexamethasone is an essential treatment for common pediatric inflammatory, airway, and respiratory conditions. We aim to provide up-to-date recommendations for treatment of anaphylaxis, croup, coronavirus disease, multisystem inflammatory syndrome in children, and asthma with dexamethasone for use in the pediatric emergency department. RECENT FINDINGS: Literature largely continues to support the use of dexamethasone in most of the above conditions, however, recommendations for dosing and duration are evolving. SUMMARY: The findings discussed in this review will enable pediatric emergency medicine providers to use dexamethasone effectively as treatment of common pediatric conditions and minimize the occurrence of side-effects caused by gratuitous corticosteroid use.

Current progress in international pediatric emergency medicine.

PURPOSE OF REVIEW: Over the past four decades, pediatric emergency Medicine (PEM) has witnessed significant global development, with a notable increase in training programs and official recognition by regulatory bodies. However, disparities persist in the recognition of PEM as an independent subspecialty, availability of training programs on a global scale, academic recognition, and the ability to provide high-quality care to children worldwide. There is paucity of published literature regarding development of PEM globally. This review explores the current trends and challenges in international pediatric emergency medicine. RECENT FINDINGS: Current trends in international pediatric emergency medicine encompass the provision of training in pediatric-focused emergency and acute care, increased propagation of evidence-based guidelines specific to the care of children, the growth of collaborative research networks and interest groups within national and international societies. Simultaneously, the field continues to face challenges such as the lack of recognition, inequities in access, and a lack of dissemination of global PEM initiatives. SUMMARY: While recent advancements have significantly enhanced the state of international pediatric emergency medicine, including pediatric specific research networks and training programs, barriers still hinder its overall quality. Many of these obstacles are not unique to pediatric emergency medicine but are directly affected by financial disparities and lack of governmental and public recognition of the essential role of pediatric emergency care.

Patógenos bacterianos y resistencia a los antibióticos en otitis media aguda / Bacterial pathogens and antimicrobial resistance in acute otitis media

Introducción: Estudios recientes señalan un aumento de la prevalencia de Haemophilus influenzae y una disminución de Streptococcus pneumoniae entre las bacterias causantes de otitis media aguda (OMA). El objetivo del estudio es conocer la distribución de microorganismos patógenos identificados en Urgencias en los menores de 14 años con OMA y su patrón de resistencias. Pacientes y métodos: Estudio retrospectivo, analítico y unicéntrico incluyendo pacientes menores de 14 años diagnosticados de OMA en los que se recogió un cultivo de secreción ótica en el servicio de urgencias pediátricas de un hospital terciario entre 2013 y 2021. Resultados: Durante el periodo de estudio se registraron 14.684 episodios con diagnóstico de OMA, recogiéndose en 768 cultivo de secreción ótica. La mediana de edad fue de 2 años, el 57% varones y el 70% habían presentado al menos una OMA previa. Los patógenos más frecuentemente aislados fueron: Haemophilus influenzae, 188 (24,5%; de ellos, 15,5% resistentes a ampicilina); Streptococcus pyogenes, 86 (11,2%); Staphylococcus aureus, 82 (10,7%); Streptococcus pneumoniae, 54 (6,9%; de ellos, 9,4% con resistencia intermedia a penicilina); Pseudomonas aeruginosa, 42 (5,5%) y Moraxella catarrhalis, 11 (1,4%). En el 34,9% no se aislaron patógenos. Conclusiones: Haemophilus influenzae es la primera causa de OMA en menores de 14 años. Este hecho, junto a la baja tasa de aislamientos y resistencia a penicilina de Streptococcus pneumoniae, cuestiona la idoneidad de la amoxicilina a dosis elevadas como tratamiento antibiótico empírico de la OMA.(AU)

Introduction: Recent studies show an increase in the prevalence of Haemophilus influenzae and a decrease in Streptococcus pneumoniae among the bacteria that cause acute otitis media (AOM). The objective of our study was to analyse the distribution of pathogens identified in children aged less than 14 years presenting to the emergency department with AOM and their patterns of antimicrobial resistance. Patients and methods: Single centre retrospective, analytical study in patients aged less than 14 years with a diagnosis of AOM in whom an ear drainage sample was collected for culture in the paediatric emergency department of a tertiary care hospital between 2013 and 2021. Results: During the study period, there were 14,684 documented care episodes corresponding to children with a diagnosis of AOM. An ear drainage culture was performed in 768 of those episodes. The median age of the patients was 2 years, 57% were male and 70% had a previous history of AOM. The most frequently isolated pathogens were: Haemophilus influenzae (n=188 [24.5%]; 15.5% of them resistant to ampicillin), Streptococcus pyogenes (n=86 [11.2%]), Staphylococcus aureus (n=82 [10.7%]), Streptococcus pneumoniae (n=54 [6.9%]; 9.4% with intermediate resistance to penicillin), Pseudomonas aeruginosa (n=42 [5.5%]) and Moraxella catarrhalis (n=11 [1.4%]). No pathogen was isolated in 34.9% of cases. Conclusions: Haemophilus influenzae is the leading cause of AOM in children aged less than 14 years. This, combined with the low frequency of isolation and penicillin resistance of Streptococcus pneumoniae, calls into question the appropriateness of high-dose amoxicillin for empiric treatment of AOM.(AU)

Advances in pediatric emergency from 2023.

Most children receive emergency care by general emergency physicians and not in designated children's hospitals. There are unique considerations in the care of children that differ from the care of adults. Many management principles can be extrapolated from adult studies, but the unique pathophysiology of pediatric disease requires specialized attention and management updates. This article highlights ten impactful articles from the year 2023 whose findings can improve the care of children in the Emergency Department (ED). These studies address pediatric resuscitation, traumatic arrest, septic shock, airway management, nailbed injuries, bronchiolitis, infant fever, cervical spine injuries, and cancer risk from radiation (Table 1). The findings in these articles have the potential to impact the evaluation and management of children (Table 2).

Updates on the clinical integration of point-of-care ultrasound in pediatric emergency medicine.

PURPOSE OF REVIEW: There is expanding evidence for point-of-care ultrasound (POCUS) use in pediatric emergency medicine - this review highlights the benefits and challenges in the clinical integration of high-yield POCUS applications. Specifically, it will delve into POCUS applications during resuscitations, controversies of Focused Assessment with Sonography for Trauma (FAST) in pediatric trauma, POCUS-guided procedures, and examples of clinical pathways where POCUS can expedite definitive care. RECENT FINDINGS: POCUS can enhance diagnostic accuracy and aid in management of pediatric patients in shock and help identify reversible causes during cardiac arrest. The use of the FAST in pediatric blunt abdominal trauma remains nuanced - its proper use requires an integration with clinical findings and an appreciation of its limitations. POCUS has been shown to enhance safety and efficacy of procedures such as nerve blocks, incision & drainage, and intravenous access. Integrating POCUS into pathways for conditions such as intussusception and testicular torsion expedites downstream care. SUMMARY: POCUS enhances diagnostic efficiency and management in pediatric patients arriving at the ED with undifferentiated shock, cardiac arrest, or trauma. Additionally, POCUS improves procedural success and safety, and is integral to clinical pathways for expediting definitive care for various pediatric emergencies. Future research should continue to focus on the impact of POCUS on patient outcomes, ensuring user competency, and the expansion of POCUS into diverse settings.

Forecasting the Future Supply of Pediatric Subspecialists in the United States: 2020-2040.

Concerns persist about whether the United States has an adequate supply of pediatric subspecialists and whether they are appropriately distributed across the nation to meet children's health needs. This article describes the data and methods used to develop a workforce projection model that estimates the future supply of 14 pediatric subspecialities certified by the American Board of Pediatrics at the national and US census region and division levels from 2020 to 2040. The 14 subspecialties include adolescent medicine, pediatric cardiology, child abuse pediatrics, pediatric critical care medicine, developmental-behavioral pediatrics, pediatric emergency medicine, pediatric endocrinology, pediatric gastroenterology, pediatric hematology-oncology, pediatric infectious diseases, neonatal-perinatal medicine, pediatric nephrology, pediatric pulmonology, and pediatric rheumatology. Hospital medicine was excluded because of the lack of historical data needed for the model. This study addresses the limitations of prior models that grouped adult and pediatric physician subspecialty workforces together and aggregated pediatric subspecialties. The model projects supply at national and subnational levels while accounting for geographic moves that pediatric subspecialists make after training and during their career. Ten "what if" scenarios included in the model simulate the effect of changes in the number of fellows entering training, the rate at which subspecialists leave the workforce, and changes in hours worked in direct and indirect clinical care. All model projections and scenarios are available on a public, interactive Web site. The model's projections can also be examined with other data to provide insight into the possible future of the pediatric subspecialty workforce and offer data to inform decision-making.

Child Health Needs and the Pediatric Emergency Medicine Workforce: 2020-2040.

Approximately 30 million ill and injured children annually visit emergency departments (EDs) in the United States. Data suggest that patients seen in pediatric EDs by board-certified pediatric emergency medicine (PEM) physicians receive higher-quality care than those cared for by non-PEM physicians. These benefits, coupled with the continued growth in PEM since its inception in the early 1990s, have impacted child health broadly. This article is part of a Pediatrics supplement focused on predicting the future pediatric subspecialty workforce supply by drawing on the American Board of Pediatrics workforce data and a microsimulation model of the future pediatric subspecialty workforce. The article discusses the utilization of acute care services in EDs, reviews the current state of the PEM subspecialty workforce, and presents projected numbers of PEM subspecialists at the national, census region, and census division on the basis of this pediatric subspecialty workforce supply model through 2040. Implications of this model on education and training, clinical practice, policy, and future workforce research are discussed. Findings suggest that, if the current growth in the field of PEM continues on the basis of the increasing number and size of fellowship programs, even with a potential reduction in percentage of clinical time and attrition of senior physicians, the PEM workforce is anticipated to increase nationally. However, the maldistribution of PEM physicians is likely to be perpetuated with the highest concentration in New England and Mid-Atlantic regions and "PEM deserts" in less populated areas.

Pediatric Emergency Medicine Didactics and Simulation (PEMDAS): Pediatric Sedation Complications.

Introduction: Ketamine and propofol are commonly used agents for sedation in the pediatric emergency department (PED). While these medications routinely provide safe sedations, there are side effects providers should be able to recognize and manage. Currently, no pediatric sedation simulations exist in the literature. Methods: We created two sedation simulation cases for learners, including pediatric emergency medicine (PEM) fellows, working in the PED: case 1, a 12-year-old male with a shoulder dislocation requiring reduction under propofol sedation, and case 2, a forearm fracture requiring reduction under ketamine sedation. Learner actions included setting up equipment for sedations, dosing medications correctly, and managing complications. Additionally, in case 2, learners assigned an American Society of Anesthesiologists classification and selected the appropriate candidate for PED sedation from amongst three patients. A debrief followed the cases. Next, a didactic presentation reinforced concepts discussed in the debrief. Participants then completed an evaluation of the simulation. Results: Fifty-eight emergency medicine residents and PEM fellows across four sites at three institutions participated. Participants scored the simulations and the debriefing session on a 5-point Likert scale. Learners rated the scenario as clinically relevant (M = 4.37) and effective at improving their comfort level in caring for critically ill patients (M = 4.36). Learners felt the debrief provided valuable learning (M = 4.40) and was a safe learning environment (M = 4.50). Discussion: These cases can be utilized as resources for learners in any emergency department and can be tailored to any training background of learner providing sedation.

Dissemination, Utilization, and Satisfaction With Emergency Medicine Resident Simulation Curriculum for Pediatrics (EM ReSCu Peds) by North American Residency Programs.

OBJECTIVES: Our research team's primary objective was to investigate how a custom standard simulation curriculum for teaching emergency medicine residents about pediatrics was being used by programs across North America. We also wanted to know if program directors were satisfied with the curriculum and whether they had challenges with implementing it. Our long-term goal is to promote the Emergency Medicine Resident Simulation Curriculum for Pediatrics for use by all programs in the United States. METHODS: We distributed an electronic questionnaire to individuals who have downloaded the Emergency Medicine Resident Simulation Curriculum for Pediatrics in the form of an e-book from the Academic Life in Emergency Medicine Web site. The curriculum was marketed through national emergency medicine (EM) and pediatric emergency medicine (PEM) groups, PEM listserv, and through the International Network for Simulation-Based Pediatric Innovation, Research, and Education. We asked survey recipients how they used the curriculum, plans for future maintenance, satisfaction with curriculum use, and whether they had any challenges with implementation. Finally, we asked demographic questions. RESULTS: Most survey respondents were EM or PEM health care physicians in the United States or Canada. Respondents' primary goal of using the curriculum was resident education. Through assessment with the Net Promoter Score, satisfaction with the curriculum was net positive with users largely scoring as curriculum promoters. We found COVID-19 and overall time limitations to be implementation barriers, whereas learner interest in topics was the largest cited facilitator. Most responders plan to continue to implement either selected cases or the entire curriculum in the future. CONCLUSIONS: Of those who responded, our target audience of EM physicians used our curriculum the most. Further investigation on implementation needs, specifically for lower resource emergency programs, is needed.

Impact of a Pediatric Emergency Medicine Pharmacist, Institutional Guideline, and Electronic Order Set on Empiric Antimicrobial Use for Febrile Neutropenia.

OBJECTIVES: This study evaluated the difference in appropriateness of antimicrobial selection in pediatric patients with febrile neutropenia (FN) after implementation of an institutional guideline, a dedicated pediatric emergency medicine (EM) pharmacist, and an electronic order set. METHODS: This was a retrospective cohort study that included febrile patients aged younger than 18 years who were at risk of neutropenia, as defined by our institutional algorithm. Charts were evaluated for inclusion by searching for patients who presented to the emergency department (ED) between February 2018 and January 2022 who had International Classification of Diseases, Tenth Revision (ICD-10) codes for patients at risk of FN. Three independent groups were compared before, during, and after interventions. A historical control group (group 1), postdedicated EM pharmacist and institutional guideline cohort (group 2), and postdedicated EM pharmacist, institutional guideline, and electronic order set cohort (group 3) were compared. Secondary outcomes included time from registration in the ED to administration of the first dose of empiric antimicrobials, days to defervescence, pediatric intensive care unit length of stay, and hospital length of stay. RESULTS: Seventy-eight charts were reviewed for inclusion. Among those included (n = 38), there was an increase in appropriate use of antimicrobials from 71% to 92% to 100% ( P = 0.1534) between group 1, group 2, and group 3, respectively. In addition, the interventions in this study lead to an overall decrease in the median time from registration to first dose of antibiotics from 142 minutes to 72 minutes ( P = 0.1370). CONCLUSIONS: This study demonstrated the positive impact a pediatric EM pharmacist along with an institutional guideline and an electronic order set have on appropriate antimicrobial selection in pediatric FN patients. Institutions should consider multipronged approaches to improve the selection and time to administration of appropriate empiric antimicrobials in the ED.

Use of a Rubric for Pediatric Emergency Medicine Fellowship Application Review.

BACKGROUND: There is a need to review a large number of applications for pediatric emergency medicine fellowship in a holistic and systemic, unbiased manner. There exists a need to restructure the application process. We sought to develop and implement a rubric screening rubric for initial evaluation of pediatric emergency medicine fellowship applications that avoided traditionally used metrics that may be biased against racially underrepresented groups who are historically excluded from medicine. METHODS: An interactive process was used by key program leadership with review of prior literature and input from Diversity, Equity, and Inclusivity departmental chair to develop a holistic screening rubric with consensus reached around key factors that aligned with our fellowship program mission. All applications were reviewed with the rubric by the program director or the associate program director. A subset of applications being considered for review were additionally scored by members of the fellowship selection committee. RESULTS: Numerical scores ranged from 2 to 14, with the maximum potential score being 14. Seventy percent of those applicants invited for interview scored 9 or higher. Reliability of scores between the program director and the associate program director was high (intraclass coefficient, 0.89); however, reliability between the program director or associate program director and the selection committee members was low to moderate (intraclass coefficient, 0.46). CONCLUSIONS: Developmental and use of a rubric screening allowed our institution to reflect on our priorities, as well as avoid potential bias. The use of the tool allowed us to communicate about applications in an objective and consistent manner. As we continue to iterate on the rubric, we hope to incorporate additional criteria to better identify highly qualified applicants who may otherwise be overlooked in a traditional screening process and gain familiarity in reviewers use.

Structured Callouts, the Shared Mental Model, and Teamwork: A Video-Based Study in a Pediatric Emergency Department.

OBJECTIVES: The shared mental model is essential to high-quality resuscitations. A structured callout (SCO) is often performed to establish the shared mental model, but the literature on SCOs is limited. The objectives of this study are to describe performance of SCOs during pediatric medical emergencies and to determine whether a SCO is associated with better teamwork. METHODS: This was a retrospective study in the resuscitation area of an academic pediatric emergency department, where performance of a SCO is a standard expectation. Only medical or nontrauma patients were eligible for inclusion. Data collection was performed by structured video review by 2 observers and verified by a third blinded observer. A SCO was defined as team leader (Pediatric Emergency Medicine fellow or faculty physician) verbalization of at least 1 element of the patient history/examination or an assessment of patient physiology and 1 element of the diagnostic or therapeutic plan. We independently measured teamwork using the Teamwork Emergency Assessment Measure (TEAM) tool. RESULTS: We reviewed 60 patient encounters from the pediatric emergency department resuscitation area between April 2018 and June 2020. Median patient age was 6 years; the team leader was a Pediatric Emergency Medicine fellow in 55% of encounters. The physician team leader performed a SCO in 38 (63%) of patient encounters. The TEAM scores were collected for 46 encounters. Mean TEAM score (SD) was 42.3 (1.7) in patients with a SCO compared with 40.0 (3.0) in those without a SCO ( P = 0.007). CONCLUSIONS: Performance of a SCO was associated with better teamwork, but the difference was of unclear clinical significance.

Work-Life Integration for Women in Pediatric Emergency Medicine: Themes Identified Through Group Level Assessment.

OBJECTIVE: Women in medicine generally have higher burnout and lower career satisfaction and work-life integration compared with men. This study identifies factors that contribute to burnout, career satisfaction, and work-life integration in women pediatric emergency medicine (PEM) physicians. METHODS: Self-identified women PEM physicians in the United States participated in a virtual focus group using Group Level Assessment methodology. Participants completed Group Level Assessment process steps of climate setting, generating, appreciating, reflecting, understanding, selecting, and action to (1) identify themes that contribute to burnout, career satisfaction, and work-life integration and (2) determine actionable factors based on these themes. Data were collected and thematically analyzed in real time through iterative processing. The group prioritized identified themes through rounds of distillation. RESULTS: Seventeen women participated, representing 10 institutions (ages 30s-70s, 69% employed full-time). Participants identified 3 main themes contributing to burnout, career satisfaction, and work-life integration: (1) gender inequities, (2) supportive leadership, and (3) balance with family life. Actionable items identified were as follows: (1) development of initiatives to equalize pay, opportunity, and career advancement among genders; (2) implementation of an institutional focus on supportive and collaborative leadership; and (3) improvement of resources and supports for physicians with family responsibilities. CONCLUSIONS: Women PEM physicians identified gender inequities, leadership, and balance with family life as major themes affecting their burnout, career satisfaction, and work-life integration. Several action steps were identified and can be used by individuals and institutions to improve work-life integration for women PEM physicians.

Ten new paediatric emergency medicine commandments.

AIM: We suggest the top ten tips that any clinician working in a pediatric emergency department should always keep in mind. METHODS: A literature review was conducted using, as a starting point, the previously published Ten Commandments for Emergency Medicine, Pediatric Emergency Medicine, and Perinatal Medicine. RESULTS AND CONCLUSION: A standard curriculum for pediatric emergency physicians is lacking. These ten commandments should be considered as advice for physicians who practice this profession every day and not as unbreakable rules established from above.

Delays in treatment and disposition attributable to undertriage of pediatric emergency medicine patients.

BACKGROUND: Triage, the initial assessment and sorting of patients in the Emergency Department (ED), determines priority of evaluation and treatment. Little is known about the impact of undertriage, the underestimation of disease severity at triage, on clinical care in pediatric ED patients. We evaluate the impact of undertriage on time to disposition and treatment decisions in pediatric ED patients. METHODS: This was a case control study of ED visits for patients <22 years of age, with an assigned Emergency Severity Index (ESI) score of 4 or 5, and associated hospital admission, nebulized treatment, supplemental oxygen, and/or intravenous (IV) line placement, between January 1, 2018, to June 30, 2022. Controls were sampled from a pool of patient visits with an ESI score of 3, matched by intervention, disposition, and date and hour of arrival. Primary outcome measures were time to order of intervention (nebulized treatment, oxygen administration, or IV placement) and time to disposition decision. A secondary outcome measure was return visits requiring admission or emergency intervention within 14 days of the index visit. Continuous variables (time to orders) were analyzed using Wilcoxon rank sum test and dichotomous outcomes (return visits) were compared using odds ratios with 95% confidence intervals. Analysis was performed with Python v3.10. RESULTS: The final analysis included 7245 undertriaged patients. Undertriaged patients had longer times to orders for nebulized treatments, (p < 0.001) IV placement, (p < 0.001) and admission (p < 0.001) when compared to controls. There were no significant differences in time to supplemental oxygen delivery and time to discharge compared to controls. Undertriaged patients were more likely to experience a return visit requiring admission or emergency intervention (OR 3.74, 95% CI 3.32,4.22). CONCLUSIONS: Undertriage in the pediatric ED is associated with delays in care and disposition decisions and increases likelihood of return visits.