Characteristics and Trends of Prehospital Encounters for Opioid Overdoses Among US Youth, 2018-2022.

This cross-sectional study analyzes characteristics of prehospital encounters for youth opioid overdoses and trends before and during the COVID-19 pandemic.

Suicide Risk Identified among Transgender and Gender Diverse Youth in the Emergency Department (2019-2022).

BACKGROUND AND OBJECTIVES: Suicide risk identified via universal screening in healthcare settings is associated with subsequent suicidal behavior and is an important prevention strategy. The prevalence of positive suicide risk screening among transgender and gender diverse (TGD) youth in the emergency department (ED) has not been described. The current study examined the association between gender identity and suicide risk screening results, adjusted for other demographic and clinical characteristics. METHODS: Retrospective cross-sectional study of electronic medical record data from ED visits November 2019-August 2022 in an urban academic children's hospital. Participants were youth ages 8-25 who received the Ask Suicide-Screening Questions suicide risk screening tool. RESULTS: Of 12,112 ED visits with suicide risk screening performed (42% male, median age 14 [12, 16]), 24% had positive screens. Of 565 visits by TGD youth, 78.1% had positive screens and 9.5% had active suicidal ideation. Compared to visits by cisgender females, the adjusted odds of positive screens was 5.35 times higher (95% CI 3.99, 7.18) among visits by TGD youth and 0.45 times lower (95% CI 0.40, 0.52) among visits by cisgender males. Compared to visits by cisgender females, the adjusted odds of active suicidal ideation was higher for cisgender males (aOR 1.34, 95% CI 1.07, 1.68) but did not significantly differ for TGD youth. CONCLUSIONS: TGD youth have high rates of positive suicide risk screening in the ED, demonstrating substantial mental health needs. Opportunities may be available to improve detection, evidence-based brief interventions, and linkage to mental health services for this population.

Association of emergency department characteristics with presence of recommended pediatric-specific behavioral health policies.

Objectives: In the United States, pediatric emergency department (ED) visits for behavioral health (BH) are increasing. We sought to determine ED-level characteristics associated with having recommended BH-related policies. Methods: We conducted a retrospective serial cross-sectional study of National Pediatric Readiness Project assessments administered to US EDs in 2013 and 2021. Changes in responses related to BH items over time were examined. Multivariable logistic regression models examined ED characteristics associated with the presence of specific BH-related policies in 2021. Results: Of 3554 EDs that completed assessments in 2021, 73.0% had BH-related policies, 66.5% had transfer guidelines for children with BH issues, and 38.6% had access to BH resources in a disaster. Of 2570 EDs that completed assessments in both 2013 and 2021, presence of specific BH-related policies increased from 48.6% to 72.0% and presence of appropriate transfer guidelines increased from 56.2% to 64.9%. The adjusted odd ratios (aORs) of having specific BH-related policies were lower in rural (aOR 0.73; 95% confidence interval [CI] 0.57, 0.92) and remote EDs (aOR 0.65; 95% CI 0.48, 0.88) compared to urban EDs; lower among EDs with versus without trauma center designation (aOR 0.80; 95% CI 0.67, 0.95); and higher among EDs with a nurse and physician pediatric emergency care coordinator (PECC) (aOR 1.89; 95% CI 1.54, 2.33) versus those without a PECC. Conclusion: Although pediatric readiness for BH conditions increased from 2013 to 2021, gaps remain, particularly among rural EDs and designated trauma centers. Having nurse and physician PECCs is a modifiable strategy to increase ED pediatric readiness pertaining to BH.

Emergency Department Use by Youths Before and After Self-Inflicted Intentional Injury.

This cohort study describes the rate of emergency department (ED) encounters, reasons for these visits, and characteristics of the children and adolescents who seek this care.

Pediatric Inpatient Psychiatric Capacity in the US, 2017 to 2020.

This cross-sectional study assesses US pediatric inpatient psychiatric capacity and identifies state-level variation in access to pediatric inpatient psychiatric beds.

CAR T-cell-mediated delivery of bispecific innate immune cell engagers for neuroblastoma.

Novel chimeric antigen receptor (CAR) T-cell approaches are needed to improve therapeutic efficacy in solid tumors. High-risk neuroblastoma is an aggressive pediatric solid tumor that expresses cell-surface GPC2 and GD2 with a tumor microenvironment infiltrated by CD16a-expressing innate immune cells. Here we engineer T-cells to express a GPC2-directed CAR and simultaneously secrete a bispecific innate immune cell engager (BiCE) targeting both GD2 and CD16a. In vitro, GPC2.CAR-GD2.BiCE T-cells induce GPC2-dependent cytotoxicity and secrete GD2.BiCE that promotes GD2-dependent activation of antitumor innate immunity. In vivo, GPC2.CAR-GD2.BiCE T-cells locally deliver GD2.BiCE and increase intratumor retention of NK-cells. In mice bearing neuroblastoma patient-derived xenografts and reconstituted with human CD16a-expressing immune cells, GD2.BiCEs enhance GPC2.CAR antitumor efficacy. A CAR.BiCE strategy should be considered for tumor histologies where antigen escape limits CAR efficacy, especially for solid tumors like neuroblastoma that are infiltrated by innate immune cells.

Comprehensiveness of State Insurance Laws and Perceived Access to Pediatric Mental Health Care.

Importance: Many US children and adolescents with mental and behavioral health (MBH) conditions do not access MBH services. One contributing factor is limited insurance coverage, which is influenced by state MBH insurance parity legislation. Objective: To investigate the association of patient-level factors and the comprehensiveness of state MBH insurance legislation with perceived poor access to MBH care and perceived inadequate MBH insurance coverage for US children and adolescents. Design, Setting, and Participants: This retrospective cross-sectional study was conducted using responses by caregivers of children and adolescents aged 6 to 17 years with MBH conditions in the National Survey of Children's Health and State Mental Health Insurance Laws Dataset from 2016 to 2019. Data analyses were conducted from May 2022 to January 2024. Exposure: MBH insurance legislation comprehensiveness defined by State Mental Health Insurance Laws Dataset (SMHILD) scores (range, 0-7). Main Outcomes and Measures: Perceived poor access to MBH care and perceived inadequacy of MBH insurance were assessed. Multivariable regression models adjusted for individual-level characteristics. Results: There were 29 876 caregivers of children and adolescents with MBH conditions during the study period representing 14 292 300 youths nationally (7 816 727 aged 12-17 years [54.7%]; 8 455 171 male [59.2%]; 292 543 Asian [2.0%], 2 076 442 Black [14.5%], and 9 942 088 White [69.6%%]; 3 202 525 Hispanic [22.4%]). A total of 3193 caregivers representing 1 770 492 children and adolescents (12.4%) perceived poor access to MBH care, and 3517 caregivers representing 1 643 260 of 13 175 295 children and adolescents (12.5%) perceived inadequate MBH insurance coverage. In multivariable models, there were higher odds of perceived poor access to MBH care among caregivers of Black (adjusted odds ratio [aOR], 1.35; 95% CI, 1.04-1.75) and Asian (aOR, 1.69; 95% CI, 1.01-2.84) compared with White children and adolescents. As exposures to adverse childhood experiences (ACEs) increased, the odds of perceived poor access to MBH care increased (aORs ranged from 1.68; 95%, CI 1.32-2.13 for 1 ACE to 4.28; 95% CI, 3.17-5.77 for ≥4 ACEs compared with no ACEs). Compared with living in states with the least comprehensive MBH insurance legislation (SMHILD score, 0-2), living in states with the most comprehensive legislation (SMHILD score, 5-7) was associated with lower odds of perceived poor access to MBH care (aOR, 0.79; 95% CI, 0.63-0.99), while living in states with moderately comprehensive legislation (score, 4) was associated with higher odds of perceived inadequate MBH insurance coverage (aOR, 1.23; 95% CI, 1.01-1.49). Conclusions and Relevance: In this study, living in states with the most comprehensive MBH insurance legislation was associated with lower odds of perceived poor access to MBH care among caregivers for children and adolescents with MBH conditions. This finding suggests that advocacy for comprehensive mental health parity legislation may promote improved child and adolescent access to MBH services.

Youth Suicide and Preceding Mental Health Diagnosis.

Importance: Suicide is a leading cause of death among US youths, and mental health disorders are a known factor associated with increased suicide risk. Knowledge about potential sociodemographic differences in documented mental health diagnoses may guide prevention efforts. Objective: To examine the association of documented mental health diagnosis with (1) sociodemographic and clinical characteristics, (2) precipitating circumstances, and (3) mechanism among youth suicide decedents. Design, Setting, and Participants: This retrospective, cross-sectional study of youth suicide decedents aged 10 to 24 years used data from the Centers for Disease Control and Prevention National Violent Death Reporting System from 2010 to 2021. Data analysis was conducted from January to November 2023. Exposures: Sociodemographic characteristics, clinical characteristics, precipitating circumstances, and suicide mechanism. Main Outcomes and Measures: The primary outcome was previously documented presence of a mental health diagnosis. Associations were evaluated by multivariable logistic regression. Results: Among 40 618 youth suicide decedents (23 602 aged 20 to 24 years [58.1%]; 32 167 male [79.2%]; 1190 American Indian or Alaska Native [2.9%]; 1680 Asian, Native Hawaiian, or Other Pacific Islander [4.2%]; 5118 Black [12.7%]; 5334 Hispanic [13.2%]; 35 034 non-Hispanic; 30 756 White [76.1%]), 16 426 (40.4%) had a documented mental health diagnosis and 19 027 (46.8%) died by firearms. The adjusted odds of having a mental health diagnosis were lower among youths who were American Indian or Alaska Native (adjusted odds ratio [aOR], 0.45; 95% CI, 0.39-0.51); Asian, Native Hawaiian, or Other Pacific Islander (aOR, 0.58; 95% CI, 0.52-0.64); and Black (aOR, 0.62; 95% CI, 0.58-0.66) compared with White youths; lower among Hispanic youths (aOR, 0.76; 95% CI, 0.72-0.82) compared with non-Hispanic youths; lower among youths aged 10 to 14 years (aOR, 0.70; 95% CI, 0.65-0.76) compared with youths aged 20 to 24 years; and higher for females (aOR, 1.64; 95% CI, 1.56-1.73) than males. A mental health diagnosis was documented for 6308 of 19 027 youths who died by firearms (33.2%); 1691 of 2743 youths who died by poisonings (61.6%); 7017 of 15 331 youths who died by hanging, strangulation, or suffocation (45.8%); and 1407 of 3181 youths who died by other mechanisms (44.2%). Compared with firearm suicides, the adjusted odds of having a documented mental health diagnosis were higher for suicides by poisoning (aOR, 1.70; 95% CI, 1.62-1.78); hanging, strangulation, and suffocation (aOR, 2.78; 95% CI, 2.55-3.03); and other mechanisms (aOR, 1.59; 95% CI, 1.47-1.72). Conclusions and Relevance: In this cross-sectional study, 3 of 5 youth suicide decedents did not have a documented preceding mental health diagnosis; the odds of having a mental health diagnosis were lower among racially and ethnically minoritized youths than White youths and among firearm suicides compared with other mechanisms. These findings underscore the need for equitable identification of mental health needs and universal lethal means counseling as strategies to prevent youth suicide.

Use of Electronic Health Record-Based Measures to Assess Quality of Care for Pediatric Agitation.

OBJECTIVES: Acute agitation during pediatric mental health emergency department (ED) visits presents safety risks to patients and staff. We previously convened multidisciplinary stakeholders who prioritized 20 proposed quality measures for pediatric acute agitation management. Our objectives were to assess feasibility of evaluating performance on these quality measures using electronic health record (EHR) data and to examine performance variation across 3 EDs. METHODS: At a children's hospital and 2 nonchildren's hospitals, we assessed feasibility of evaluating quality measures for pediatric acute agitation management using structured EHR data elements. We retrospectively evaluated measure performance during ED visits by children 5 to 17 years old who presented for a mental health condition, received medication for agitation, or received physical restraints from July 2020 to June 2021. Bivariate and multivariable regression were used to examine measure performance by patient characteristics and hospital. RESULTS: We identified 2785 mental health ED visits, 275 visits with medication given for agitation, and 35 visits with physical restraints. Performance was feasible to measure using EHR data for 10 measures. Nine measures varied by patient characteristics, including 4.87 times higher adjusted odds (95% confidence interval 1.28-18.54) of physical restraint use among children with versus without autism spectrum disorder. Four measures varied by hospital, with physical restraint use varying from 0.5% to 3.3% of mental health ED visits across hospitals. CONCLUSIONS: Quality of care for pediatric acute agitation management was feasible to evaluate using EHR-derived quality measures. Variation in performance across patient characteristics and hospitals highlights opportunities to improve care quality.

Pediatric mental health emergency department visits from 2017 to 2022: A multicenter study.

BACKGROUND: The COVID-19 pandemic adversely affected children's mental health (MH) and changed patterns of MH emergency department (ED) utilization. Our objective was to assess how pediatric MH ED visits during the COVID-19 pandemic differed from expected prepandemic trends. METHODS: We retrospectively studied MH ED visits by children 5 to <18 years old at nine U.S. hospitals participating in the Pediatric Emergency Care Applied Research Network Registry from 2017 to 2022. We described visit length by time period: prepandemic (January 2017-February 2020), early pandemic (March 2020-December 2020), midpandemic (2021), and late pandemic (2022). We estimated expected visit rates from prepandemic data using multivariable Poisson regression models. We calculated rate ratios (RRs) of observed to expected visits per 30 days during each pandemic time period, overall and by sociodemographic and clinical characteristics. RESULTS: We identified 175,979 pediatric MH ED visits. Visit length exceeded 12 h for 7.3% prepandemic, 8.4% early pandemic, 15.0% midpandemic, and 19.2% late pandemic visits. During the early pandemic, observed visits per 30 days decreased relative to expected rates (RR 0.80, 95% confidence interval [CI] 0.78-0.84), were similar to expected rates during the midpandemic (RR 1.01, 95% CI 0.96-1.07), and then decreased below expected rates during the late pandemic (RR 0.92, 95% CI 0.86-0.98). During the late pandemic, visit rates were higher than expected for females (RR 1.10, 95% CI 1.02-1.20) and for bipolar disorders (RR 1.83, 95% CI 1.38-2.75), schizophrenia spectrum disorders (RR 1.55, 95% CI 1.10-2.59), and substance-related and addictive disorders (RR 1.50, 95% CI 1.18-2.05). CONCLUSIONS: During the late pandemic, pediatric MH ED visits decreased below expected rates; however, visits by females and for specific conditions remained elevated, indicating a need for increased attention to these groups. Prolonged ED visit lengths may reflect inadequate availability of MH services.

Improving Documentation of Firearm Access During Pediatric Emergency Visits for Suicidal Ideation.

BACKGROUND AND OBJECTIVES: Approximately half of youth suicides involve firearms. The promotion of safe firearm storage in the home through lethal means counseling reduces suicide risk. We aimed to increase the documentation of firearm access and storage among children presenting to the emergency department (ED) with suicidal ideation or self-injury to 80% within 13 months. METHODS: We conducted a multidisciplinary quality improvement initiative to improve the documentation of firearm access and storage among children <18 years old seen in the ED for suicidal ideation or self-injury. The baseline period was February 2020 to September 2021, and interventions occurred through October 2022. Interventions included adding a templated phrase about firearm access to psychiatric social work consult notes and the subsequent modification of the note to include all firearm storage elements (ie, locked, unloaded, separate from ammunition). Statistical process control and run charts were generated monthly to monitor the documentation of firearm access and storage, which was measured through a review of keyword snippets extracted from note text. RESULTS: We identified 2158 ED encounters for suicidal ideation or self-injury during the baseline and intervention periods. Documentation of firearm access increased from 37.8% to 81.6%, resulting in a centerline shift. Among families who endorsed firearm access, the documentation of firearm storage practices increased from 50.0% to 78.0%, resulting in a centerline shift. CONCLUSIONS: The modification of note templates facilitated increased documentation of firearm access and storage practices for children with suicidal ideation in the ED. Future studies should assess whether improved documentation is associated with improved storage practices and reductions in firearm suicides after ED encounters.

Psychotropic Medication Administration in Pediatric Emergency Departments.

BACKGROUND AND OBJECTIVES: Visits by youth to the emergency department (ED) with mental and behavioral health (MBH) conditions are increasing, yet use of psychotropic medications during visits has not been well described. We aimed to assess changes in psychotropic medication use over time, overall and by medication category, and variation in medication administration across hospitals. METHODS: We conducted a retrospective cross-sectional study of ED encounters by youth aged 3-21 with MBH diagnoses using the Pediatric Health Information System, 2013-2022. Medication categories included psychotherapeutics, stimulants, anticonvulsants, antihistamines, antihypertensives, and other. We constructed regression models to examine trends in use over time, overall and by medication category, and variation by hospital. RESULTS: Of 670 911 ED encounters by youth with a MBH diagnosis, 12.3% had psychotropic medication administered. The percentage of MBH encounters with psychotropic medication administered increased from 7.9% to16.3% from 2013-2022 with the odds of administration increasing each year (odds ratio, 1.09; 95% confidence interval, 1.05-1.13). Use of all medication categories except for antianxiety medications increased significantly over time. The proportion of encounters with psychotropic medication administered ranged from 4.2%-23.1% across hospitals (P < .001). The number of psychotropic medications administered significantly varied from 81 to 792 medications per 1000 MBH encounters across hospitals (P < .001). CONCLUSIONS: Administration of psychotropic medications during MBH ED encounters is increasing over time and varies across hospitals. Inconsistent practice patterns indicate that opportunities are available to standardize ED management of pediatric MBH conditions to enhance quality of care.

Evaluation and management of suicidal ideation and self-harm in children in the emergency department.

Suicide is a leading cause of death among youth, and the emergency department (ED) serves as the primary point of healthcare contact for many with suicidal ideation. As suicide-related presentations to the ED continue to rise, the implementation of time- and cost-effective care pathways becomes ever more critical. Evidence-based tools for the identification and stratification of suicide risk can aid in clinical decision-making and care linkage. This issue reviews best practices for suicide risk assessment of youth to guide evaluation, management, and disposition planning within the ED setting.

Race, Ethnicity, Language, and the Treatment of Low-Risk Febrile Infants.

Importance: Febrile infants at low risk of invasive bacterial infections are unlikely to benefit from lumbar puncture, antibiotics, or hospitalization, yet these are commonly performed. It is not known if there are differences in management by race, ethnicity, or language. Objective: To investigate associations between race, ethnicity, and language and additional interventions (lumbar puncture, empirical antibiotics, and hospitalization) in well-appearing febrile infants at low risk of invasive bacterial infection. Design, Setting, and Participants: This was a multicenter retrospective cross-sectional analysis of infants receiving emergency department care between January 1, 2018, and December 31, 2019. Data were analyzed from December 2022 to July 2023. Pediatric emergency departments were determined through the Pediatric Emergency Medicine Collaborative Research Committee. Well-appearing febrile infants aged 29 to 60 days at low risk of invasive bacterial infection based on blood and urine testing were included. Data were available for 9847 infants, and 4042 were included following exclusions for ill appearance, medical history, and diagnosis of a focal infectious source. Exposures: Infant race and ethnicity (non-Hispanic Black, Hispanic, non-Hispanic White, and other race or ethnicity) and language used for medical care (English and language other than English). Main Outcomes and Measures: The primary outcome was receipt of at least 1 of lumbar puncture, empirical antibiotics, or hospitalization. We performed bivariate and multivariable logistic regression with sum contrasts for comparisons. Individual components were assessed as secondary outcomes. Results: Across 34 sites, 4042 infants (median [IQR] age, 45 [38-53] days; 1561 [44.4% of the 3516 without missing sex] female; 612 [15.1%] non-Hispanic Black, 1054 [26.1%] Hispanic, 1741 [43.1%] non-Hispanic White, and 352 [9.1%] other race or ethnicity; 3555 [88.0%] English and 463 [12.0%] language other than English) met inclusion criteria. The primary outcome occurred in 969 infants (24%). Race and ethnicity were not associated with the primary composite outcome. Compared to the grand mean, infants of families that use a language other than English had higher odds of the primary outcome (adjusted odds ratio [aOR]; 1.16; 95% CI, 1.01-1.33). In secondary analyses, Hispanic infants, compared to the grand mean, had lower odds of hospital admission (aOR, 0.76; 95% CI, 0.63-0.93). Compared to the grand mean, infants of families that use a language other than English had higher odds of hospital admission (aOR, 1.08; 95% CI, 1.08-1.46). Conclusions and Relevance: Among low-risk febrile infants, language used for medical care was associated with the use of at least 1 nonindicated intervention, but race and ethnicity were not. Secondary analyses highlight the complex intersectionality of race, ethnicity, language, and health inequity. As inequitable care may be influenced by communication barriers, new guidelines that emphasize patient-centered communication may create disparities if not implemented with specific attention to equity.

A Qualitative Assessment of Barriers and Proposed Interventions to Improve Acute Agitation Management for Children With Mental and Behavioral Health Conditions in the Emergency Department.

BACKGROUND: Mental health visits to the emergency department (ED) by children are rising in the United States, and acute agitation during these visits presents safety risks to patients and staff. OBJECTIVE: We sought to assess barriers and strategies for providing high-quality care to children who experience acute agitation in the ED. METHODS: We conducted semistructured interviews with 6 ED physicians, 6 ED nurses, 6 parents, and 6 adolescents at high risk for developing agitation. We asked participants about their experiences with acute agitation care in the ED, barriers and facilitators to providing high-quality care, and proposed interventions. Interviews were coded and analyzed thematically. RESULTS: Participants discussed identifying risk factors for acute agitation, worrying about safety and the risk of injury, feeling moral distress, and shifting the culture toward patient-centered, trauma-informed care. Barriers and facilitators included using a standardized care pathway, identifying environmental barriers and allocating resources, partnering with the family and child, and communicating among team members. Nine interventions were proposed: opening a behavioral observation unit with dedicated staff and space, asking screening questions to identify risk of agitation, creating personalized care plans in the electronic health record, using a standardized agitation severity scale, implementing a behavioral response team, providing safe activities and environmental modifications, improving the handoff process, educating staff, and addressing bias and inequities. CONCLUSIONS: Understanding barriers can inform solutions to improve care for children who experience acute agitation in the ED. The perspectives of families and patients should be considered when designing interventions to improve care.

Characteristics of pediatric behavioral health emergencies in the prehospital setting.

OBJECTIVE: Approximately 10% of emergency medical services (EMS) encounters in the United States are behavioral health related, but pediatric behavioral health EMS encounters have not been well characterized. We sought to describe demographic, clinical, and EMS system characteristics of pediatric behavioral health EMS encounters across the United States and to evaluate factors associated with sedative medication administration and physical restraint use during these encounters. METHODS: We conducted a retrospective cross-sectional study of pediatric (<18 years old) behavioral health EMS encounters from 2019 to 2020 using the National Emergency Medical Services Information System. Behavioral health encounters were defined using primary or secondary impression codes. We used multivariable logistic regression to identify factors associated with sedative medication administration and physical restraint use. RESULTS: Of 2,740,271 pediatric EMS encounters, 309,442 (11.3%) were for behavioral health. Of pediatric behavioral health EMS encounters, 85.2% of patients were 12-17 years old, 57.3% of patients were female, and 86.6% of encounters occurred in urban areas. Sedative medications and physical restraints were used in 2.2% and 3.0% of pediatric behavioral health EMS encounters, respectively. Sedative medication use was associated with the presence of developmental, communication, or physical disabilities relative to their absence (adjusted odds ratio [aOR] 3.38, 95% confidence interval [CI] 2.93-3.91) and with encounters in the West relative to the South (aOR 1.23, 95% CI 1.16-1.32). Physical restraint use was associated with encounters by patients 6-11 years old relative to those 12-17 years old (aOR 1.35, 95% CI 1.27-1.44), the West relative to the South (aOR 3.49, 95% CI 3.27-3.72), and private nonhospital EMS systems relative to fire departments (aOR 3.39, 95% CI 3.18-3.61). CONCLUSIONS: Among pediatric prehospital behavioral health EMS encounters, the use of sedative medications and physical restraint varies by demographic, clinical, and EMS system characteristics. Regional variation suggests opportunities may be available to standardize documentation and care practices during pediatric behavioral health EMS encounters.

Immunotherapy targeting B cells and long-lived plasma cells effectively eliminates pre-existing donor-specific allo-antibodies.

Pre-existing anti-human leukocyte antigen (HLA) allo-antibodies constitute a major barrier to transplantation. Current desensitization approaches fail due to ineffective depletion of allo-specific memory B cells (Bmems) and long-lived plasma cells (LLPCs). We evaluate the efficacy of chimeric antigen receptor (CAR) T cells targeting CD19 and B cell maturation antigen (BCMA) to eliminate allo-antibodies in a skin pre-sensitized murine model of islet allo-transplantation. We find that treatment of allo-sensitized hosts with CAR T cells targeting Bmems and LLPCs eliminates donor-specific allo-antibodies (DSAs) and mitigates hyperacute rejection of subsequent islet allografts. We then assess the clinical efficacy of the CAR T therapy for desensitization in patients with multiple myeloma (MM) with pre-existing HLA allo-antibodies who were treated with the combination of CART-BCMA and CART-19 (ClinicalTrials.gov: NCT03549442) and observe clinically meaningful allo-antibody reduction. These findings provide logical rationale for clinical evaluation of CAR T-based immunotherapy in highly sensitized candidates to promote successful transplantation.

Pediatric Firearm Injury Emergency Department Visits From 2017 to 2022: A Multicenter Study.

BACKGROUND AND OBJECTIVE: Pediatric firearm injuries increased during the coronavirus disease 2019 pandemic, but recent trends in firearm injury emergency department (ED) visits are not well described. We aimed to assess how pediatric firearm injury ED visits during the pandemic differed from expected prepandemic trends. METHODS: We retrospectively studied firearm injury ED visits by children <18 years old at 9 US hospitals participating in the Pediatric Emergency Care Applied Research Network Registry before (January 2017 to February 2020) and during (March 2020 to November 2022) the pandemic. Multivariable Poisson regression models estimated expected visit rates from prepandemic data. We calculated rate ratios (RRs) of observed to expected visits per 30 days, overall, and by sociodemographic characteristics. RESULTS: We identified 1904 firearm injury ED visits (52.3% 15-17 years old, 80.0% male, 63.5% non-Hispanic Black), with 694 prepandemic visits and 1210 visits during the pandemic. Death in the ED/hospital increased from 3.1% prepandemic to 6.1% during the pandemic (P = .007). Firearm injury visits per 30 days increased from 18.0 prepandemic to 36.1 during the pandemic (RR 2.09, 95% CI 1.63-2.91). Increases beyond expected rates were seen for 10- to 14-year-olds (RR 2.61, 95% CI 1.69-5.71), females (RR 2.46, 95% CI 1.55-6.00), males (RR 2.00, 95% CI 1.53-2.86), Hispanic children (RR 2.30, 95% CI 1.30-9.91), and Black non-Hispanic children (RR 1.88, 95% CI 1.34-3.10). CONCLUSIONS: Firearm injury ED visits for children increased beyond expected prepandemic trends, with greater increases among certain population subgroups. These findings may inform firearm injury prevention efforts.