Total Emergency Department Visits Research Articles

Trends in emergency department visits for emergency care-sensitive conditions before and during the COVID-19 pandemic: a nationwide study in Korea, 2019-2021.

Emergency care systems worldwide have been significantly affected by the COVID-19 pandemic. This study investigated the trend of emergency department (ED) visits for emergency care-sensitive conditions (ECSCs) in Korea before and during the pandemic. We performed a longitudinal study using the national ED database in Korea from January 2019 to December 2021. We calculated the number and incidence rate of visits for ECSCs per 100,000 ED visits, and the incidence rate ratio of 2021 relative to the value in 2019. The selected ECSCs were intracranial injury, ischemic heart disease, stroke, and cardiac arrest. The number of ED visits for all causes decreased by about 23% during the pandemic. The number of ED visits for intracranial injuries decreased from 166,695 in 2019 to 133,226 in 2020 and then increased to 145,165 in 2021. The number of ED visits for ischemic heart disease and stroke decreased in 2020 but increased to 2019 levels in 2021. In contrast, the number of ED visits for cardiac arrest increased from 23,903 in 2019 to 24,344 in 2020 and to 27,027 in 2021. The incidence rate and incidence rate ratio of these four ECSCs increased from 2019 to 2021, suggesting increasing relative proportions of ECSCs in total ED visits. During the COVID-19 pandemic, the number of cardiac arrests seen in the EDs increased, but that of other ECSCs decreased. The decrease in ED visits for ECSCs was not as pronounced as the decrease in ED visits for all causes during the pandemic. Further studies are needed to determine clinical outcomes in patients with ECSC during the pandemic.

Trends in Pediatric Emergency and Inpatient Healthcare Use for Mental and Behavioral Health Among North Carolinians During the Early COVID-19 Pandemic.

Widespread school closures and health care avoidance during the COVID-19 pandemic led to disruptions in access to pediatric mental health care. We conducted a retrospective study of emergency and inpatient administrative claims from privately insured children aged 6-20 years in North Carolina between January 2019 and December 2020. We compared rates of emergency department (ED) visits (per 100 000 person-days) and risks of hospitalizations (per 100 000 persons) with diagnosis codes in each category (mental/behavioral health; suicidal ideation, suicide attempt, and intentional self-harm [SI/SA/ISH]; and social issues) across 3 time periods (pre-pandemic, lockdown, and reopening). We calculated the proportion and 95% confidence intervals (CI) of total ED visits and total hospitalizations attributable to mental/behavioral health and SI/SA/ISH across the 3 time periods. Rates of all categories of ED visits decreased from pre-pandemic to the lockdown period; from pre-pandemic to the reopening period, mental/behavioral health visits decreased but rates of SI/SA/ISH visits were unchanged. The proportion of ED visits attributable to mental/behavioral health increased from 3.5% (95% CI 3.2%-3.7%) pre-pandemic to 4.0% (95% CI 3.7%-4.3%) during reopening, and the proportion of SI/SA/ISH diagnoses increased from 1.6% (95% CI 1.4%-1.8%) pre-pandemic to 2.4% (95% CI 2.1%-2.7%) during the reopening period. Emergency care use for social issues and hospital admissions for mental/behavioral health and SI/SA/ISH diagnoses were unchanged across the study periods. In the early pandemic, pediatric mental health care and acute suicidal crises accounted for increased proportions of emergency care. During pandemic recovery, understanding the populations most impacted and increasing access to preventative mental health care is critical.

Feasibility of cognitive assessments post‐emergency department (ED) discharge: A longitudinal pilot study of Medicare‐enrolled adults 65 +

AbstractBackground50% of US adults living with Alzheimer’s disease and related dementias (ADRD) never receive a formal diagnosis. This compromises the wellbeing of persons living with ADRD and their care partners, increases health services utilization, and the costs‐of‐care. Wider screening and assessment for ADRD may increase access to supportive care that prevents or delays disease progression, ameliorates care partner burden, and alleviates costs.MethodA sample of Medicare‐enrolled individuals 65+ (n = 149) presenting to the Oregon Health & Sciences University (OHSU) emergency department (ED) in Portland, Oregon between May 2022 and January 2023 were recruited and administered the Telephone Interview for Cognitive Status (TICS) up to one‐month post‐discharge. Study participants were queried about their physical health via the modified cumulative illness rating scale (M‐CIRS), while their cognitive health was assessed via the PROMIS Cognitive Measure Questions on Mental Clarity. Care utilization patterns were measured via review of subjects’ electronic health records (EHR) for three years prior to study enrollment date focusing on total hospitalizations, ED visits, and primary care (PC) visits. These reviews measured health care utilization across three groups comparing individuals with (A) un‐diagnosed cognitive impairment with (B) cognitively healthy individuals, and (C) individuals with a formal ADRD diagnosis.ResultStudy enrollment rate was 25.8% (n = 149) of individuals meeting eligibility requirements. Enrollment was limited to patients with an OHSU PC affiliated provider excluding the majority (ineligible n = 1681, 74%) of Medicare‐enrolled ED patients (total ED users available for recruitment was n = 2,258). Of those contacted, 10% declined participation due to lack of interest and 4% declined due to cognitive or health restraints. Time to administer instrument suite ranged between 26‐33 minutes.ConclusionMedicare‐enrolled adults 65+ recently discharged from the ED appear to be an acceptable population to administer cognitive assessments. Findings during the recruitment process show success at enrolling this population to the study and administration times did not appear burdensome in duration for those enrolled. This study provides preliminary evidence supporting a focus on older ED patients to administer cognitive assessments, linking outcomes to the EHR, and ultimately providing a platform for future research on the impact of under‐diagnosed ADRD on health outcomes and utilization.

When the economy falters, hearts suffer: Economic recessions as a social determinant of health in cardiovascular emergencies

IntroductionWhile the relationships between cardiovascular disease (CVD), stress, and financial strain are well studied, the association between recessionary periods and macroeconomic conditions on incidence of disease-specific CVD emergency department (ED) visits is not well established. ObjectivesThis retrospective observational study aimed to assess the relationship between macroeconomic trends and CVD ED visits. MethodsThis study uses data from the National Hospital Ambulatory Care Survey (NHAMCS), Federal Reserve Economic Database (FRED), National Bureau of Economic Research (NBER), and CVD groupings from National Vital Statistics (NVS) and Center for Medicare and Medicaid Services (CMS) from 1999 to 2020 to analyze ED visits in relation to macroeconomic indicators and NBER defined recessions and expansions. ResultsCVD ED visits grew by 79.7% from 1999 to 2020, significantly more than total ED visits (27.8%, p < 0.001). A national estimate of 213.2 million CVD ED visits, with 22.9 million visits in economic recessions were analyzed. A secondary group including a 6-month period before and after each recession (defined as a “broadened recession”) was also analyzed to account for potential leading and lagging effects of the recession, with a total of 50.0 million visits. A significantly higher proportion of CVD ED visits related to heart failure (HF) and other acute ischemic heart diseases (IHD) was observed during recessionary time periods both directly and with a 6-month lead and lag (p < 0.05). The proportion of aortic aneurysm and dissection (AAA) and atherosclerosis (ASVD) ED visits was significantly higher (p = 0.024) in the recession period with a 6-month lead and lag. When controlled for common demographic factors, economic approximations of recession such as the CPI, federal funds rate, and real disposable income were significantly associated with increased CVD ED visits. ConclusionMacroeconomic trends have a significant relationship with the overall mix of CVD ED visits and represent an understudied social determinant of health.

Outpatient Management of Sickle Cell Vaso-Occlusive Crisis As a Strategy of Decreasing Emergency Department Visits

Background: Complications of sickle cell disease (SCD), including vaso-occlusive crises (VOC), usually require emergency room visits or even hospitalization for management. Outpatient treatment programs have been developed for management of VOC, however the literature is limited as to the efficacy of these models. Previously, patients in Edmonton, Canada followed by the Hemoglobinopathy Clinic would have to present to the emergency department (ED) for assessment of and management of VOC. Since 2019, patients experiencing early VOC symptoms were able to present to the Medical Outpatient Unit (MOU), an infusion clinic shared with other benign and malignant hematology conditions, to be assessed and receive treatment. This study retrospectively evaluated the outcomes of this treatment strategy. Hypothesis: Outpatient management of VOC is an effective way to assess patients and provide appropriate treatment, thereby reducing the frequency of ED presentations for SCD patients. Methods: Patients were able to schedule their own appointments and were encouraged to present early before they developed severe symptoms. They would be assessed by a nurse, who could then release orders from their personalized pain plan, which is a standing set of orders from an SCD clinic physician. Examples of orders include intravenous fluids and pain medications. Based on the severity of symptoms, patients could also be referred to the ED or for assessment by a physician or nurse practitioner. Chart review of patients aged 18 years or older with SCD followed by the Edmonton Hemoglobinopathy Clinic and who presented to MOU from November 2019 to December 2022 for management of VOC was completed. Information gathered included if the patient was on hydroxyurea at the time, investigations ordered, treatments administered, if NP or physician assessment was required, and disposition following the encounter. Encounters within 7 days were counted as one episode and assumed to be the same VOC event. Visits to ED for this cohort were counted and compared to the number of ED visits from 2016 to 2018. Results: 26 SCD patients had at least one MOU encounter for VOC or prophylaxis resulting in a total of 136 encounters (median 2, maximum 25). These accounted for 96 separate episodes of VOC (median 2, maximum 19), with a median of 1 encounter to MOU per episode (maximum 5). Patient demographics had a mean age of 32 years as of the beginning of the study (maximum 65, minimum 16) with 14 males (54%) and 12 females (46%). Patient diagnoses included 10 with HbSS (38%), 12 with HbSC (46%), 3 with HbSD (12%), and 1 with HbSB° (4%). 21 of 26 patients (81%) were on hydroxyurea at some point during this time period. IV fluids were administered in 129 encounters (95%), and pain medications were given in 64 encounters (47%), with opioid medications being given in 24 encounters (18%). 109 encounters had assessment by a nurse only (80%), while 24 were also assessed by a nurse practitioner (18%) and only 3 required assessment by a physician (2%). Patients were discharged home in 134 of 136 encounters (99%), with only 2 encounters resulting in assessment in ED. 70 of 96 episodes of VOC treated in MOU did not have presentation to ED within 30 days (73%). Total ED visits for this cohort decreased from 59 in 2016-2018 to 38 during the time of this study. Conclusion: Treatment of VOC in an outpatient setting was effective for assessment and treatment and decreased ED visits in our cohort. While retrospective, these results suggest outpatient treatment of VOC can be completed safely and efficiently in a shared infusion unit and may be generalized to other centres with outpatient IV infusion programs.

Prospective Cohort Study of Emergency Department Visit Frequency and Diagnoses Before and During COVID-19 Pandemic in Urban, Low-Income, US- and Foreign-Born Mothers in Boston, MA.

The coronavirus 2019 (COVID-19) pandemic fundamentally changed how populations interface with the healthcare system. Despite historical spikes in US mortality during the pandemic, emergency department (ED) visits were paradoxically low. This is a concerning phenomenon that raises a red flag regarding access to care, especially among vulnerable populations. In this study we sought to understand how ED utilization evolved during the COVID-19 pandemic among traditionally understudied, low-income, racially diverse US- and foreign-born mothers. This is a secondary analysis of a pre-existing dataset of 3,073 participants enrolled in the Boston Birth Cohort at birth and followed prospectively. We obtained ED visit diagnoses from 2019 and 2020 via electronic health records, categorized according to the International Classification of Diseases, 10th Revision, and compared them using graph plots, chi-square, and negative binomial regression. The number of ED visits decreased by 29.1% (P < 0.001) from 2019 (1,376) to 2020 (976). However, visits for infectious and parasitic diseases, including COVID-19, increased by 90.6% (32:61) with COVID-19 accounting for 77% of those visits in 2020 (47/61). Mental health-related visits increased by 40.9% (44:62), with diagnoses of alcohol use disorder increasing by 183% (6:17). Regression analysis showed 50% less ED utilization among foreign- vs US-born participants; however, the increase in infectious diseases visits was greater among foreign-born compared to US-born mothers (185% vs 26%, P = 0.01), while the increase in mental health diagnoses was greater among US-born mothers (69% vs -33%, P = 0.10). Despite a decrease in total ED visits during the pandemic, there was an increase in COVID-19- (immigrant > US born) and mental health- (US-born only) related visits. Our findings demonstrate that EDs remain a critical access point for care for minority populations and have implications for preparedness, resources, and services of EDs in urban settings to better address the needs of communities. However, alternative avenues for healthcare services for these populations, particularly during health crises, warrant further investigation.

Adolescent Total and Mental Health–Related Emergency Department Visits During the COVID-19 Pandemic

Previous research has assessed changes in pediatric and adolescent health care utilization during the COVID-19 pandemic; however, less is known regarding how the pandemic affected adolescents' use of emergency care, specifically for mental health (MH). To determine how adolescents (ages 12-17 years), compared with other age groups, sought help in emergency departments (EDs) in general and for MH conditions during the COVID-19 pandemic. In this cross-sectional study, National Syndromic Surveillance Program data and the Centers for Disease Control and Prevention Mental Health, version 1, query were used to track patterns in weekly adolescent ED visits by region across the 10 US Department of Health and Human Services regions from January 2019 through December 2021. Data analysis was performed in April and May 2023. Total ED visits, MH-related ED visits, and the proportion of total ED visits that were MH related by week-region. Both weekly regional ED visits and MH-related ED visits dropped after the onset of the pandemic. Because total ED visits dropped more than MH-related ED visits, the proportion of MH-related ED visits increased for the adolescent group. Total ED visits only returned to prepandemic weekly levels (2019: mean [range], 7358 [715-25 908] visits) in the middle of 2021 (overall in 2021: mean [range], 6210 [623-25 777] visits). Mental health-related visits also dropped in 2020 but rebounded to prepandemic weekly levels (2019: mean [range], 634 [56-1703] visits) by the end of 2020 (mean [range], 533 [39-1800] visits). This cross-sectional study suggests that families' perceptions of the need for emergent MH care were reduced during the pandemic by less than their perception of the need for emergency care overall. Emergency departments should be equipped to provide critical care specifically for adolescents facing MH emergencies.

Emergency department visits respond nonlinearly to wildfire smoke

Air pollution negatively affects a range of health outcomes. Wildfire smoke is an increasingly important contributor to air pollution, yet wildfire smoke events are highly salient and could induce behavioral responses that alter health impacts. We combine geolocated data covering all emergency department (ED) visits to nonfederal hospitals in California from 2006 to 2017 with spatially resolved estimates of daily wildfire smoke PM[Formula: see text] concentrations and quantify how smoke events affect ED visits. Total ED visits respond nonlinearly to smoke concentrations. Relative to a day with no smoke, total visits increase by 1 to 1.5% in the week following low or moderate smoke days but decline by 6 to 9% following extreme smoke days. Reductions persist for at least a month. Declines at extreme levels are driven by diagnoses not thought to be acutely impacted by pollution, including accidental injuries and several nonurgent symptoms, and declines come disproportionately from less-insured populations. In contrast, health outcomes with the strongest physiological link to short-term air pollution increase dramatically in the week following an extreme smoke day: We estimate that ED visits for asthma, COPD, and cough all increase by 30 to 110%. Data from internet searches, vehicle traffic sensors, and park visits indicate behavioral changes on high smoke days consistent with declines in healthcare utilization. Because low and moderate smoke days vastly outweigh high smoke days, we estimate that smoke was responsible for an average of 3,010 (95% CI: 1,760-4,380) additional ED visits per year 2006 to 2017. Given the increasing intensity of wildfire smoke events, behavioral mediation is likely to play a growing role in determining total smoke impacts.

An analysis of racial inequities in emergency department triage among patients with stroke-like symptoms in the United States

BackgroundRacial inequities exist in treatment and outcomes in patients with acute stroke.ObjectivesOur objective was to determine if racial inequities exist in the time-lapse between patient presentation and provider assessment in patients with stroke-like symptoms in Emergency Departments (ED) across the U.S.MethodsThis study is a retrospective, observational study of the National Hospital Ambulatory Medical Care Survey (NHAMCS) 2014–2018. We identified visits with stroke-like symptoms and stratified the proportion of door-to-provider (DTP) times by racial groups. We used broad and narrow definitions of stroke-like symptoms. We performed bivariate and multivariate analyses using race and clinical and demographic characteristics as covariates.ResultsBetween 2014–2018, there were an average of 138.58 million annual ED visits. Of the total ED visits, 0.36% to 7.39% of the ED visits presented with stroke-like symptoms, and the average DTP time ranged from 39 to 49 min. The proportion of the visits with a triage level of 1 (immediate) or 2 (emergent) ranged from 16.03% to 23.27% for stroke-like symptoms. We did not find statistically significant racial inequities in DTP or ED triage level. We found significantly longer DTP times in non-Hispanic blacks (15.88 min, 95% CI: 4.29–27.48) and Hispanics (by 14.77 min, 95% CI: 3.37–26.16) than non-Hispanic whites that presented with atypical stroke-like symptoms. We observed that non-Hispanic whites were significantly more diagnosed with a stroke/TIA than other racial minority groups (p = 0.045) for atypical stroke-like symptoms.ConclusionIn our population-based analysis, we did not identify systemic racial inequities in the DTP times or ED triage level at ED triage for stroke-like symptoms.

Children’s injury database: development of an injury surveillance system in a pediatric emergency department

BackgroundInjuries are the leading cause of death in children and are also a leading cause of all emergency department (ED) visits for children. Obtaining epidemiologic data to define the wide range of childhood injuries for individual communities is challenging. The Children’s Injury Database (CID) is an injury surveillance system developed to collect data from injury-related visits to our tertiary care pediatric emergency department.ResultsDuring 2021, a total of 15,168 injury visits were analyzed representing 22% of total ED visits (68,834). A total of 2053 injury visits (13.5%) resulted in hospital admission. The 10 leading injury types included: falls, poisonings, motor vehicle collision (MVC), assault, dog bite, burns, sports, pedestrian, bicycle, and all-terrain vehicle (ATV). Admission rates varied by age group with children ages 13 years and older having the highest rate of admission (18.4%). The median length of stay (LOS) for all injured children requiring admission was 2 days while the median LOS for preschoolers was 1 day, the median LOS for school-age children was 2 days, and the median LOS for teenagers was 3 days. While MVCs were the most common cause of vehicle-related injuries, ATV-related injuries had the highest rate of admission (51%).ConclusionsIn this study, teenagers had significantly higher admission rates, lengths of stay, and hospital charges. Black and Hispanic children were under-represented in the number of visits for injuries compared to all ED visits. Further research should focus on disparities in injury-related visits based on race as well as gender. CID has demonstrated that injury surveillance systems can assist with reporting new injury patterns while also acting as a stimulus for new research ideas, planning interventions targeting the most at-risk populations, and evaluating the effectiveness of injury prevention interventions.

Understanding the Clinical Profile and Hospitalisation Patterns of Residents From Aged Care Facilities: A Regional Victorian Hospital Study.

Introduction Residents of residential aged care facilities (RACFs) are typically frailer than their community-dwelling counterparts. They often present to the emergency department (ED) with varied health issues, frequently leading to hospital admissions. These admissions can exacerbate patient frailty and strain the healthcare system. Despite global efforts to reduce ED presentations from RACFs, effective strategies still need to be discovered. This study examines the clinical profile and hospitalisation patterns of RACF residents in a regional Victorian town. Aims The study aimed to assess the prevalence of ED presentations and representations from RACFs, investigate the causes and outcomes of hospital admissions stemming from these presentations, and evaluate the prevalence of documented (advanced care directives) ACDs within this patient cohort. Methods Following ethical approval, we conducted a retrospective analysis of 467 ED presentations from 310 RACF patients admitted to Goulburn Valley Health's (GVH) ED from January to June 2022. We collected and examined data on demographics, ACD existence, ED presentation characteristics, and hospital admissions, classifying admission reasons into eleven groups. Statistical analysis was performed with GraphPad Prism and IBM SPSS, using inferential tests and logistic regression to assess readmission odds at a significance threshold of p<0.05. Results Our study encompassed 310 patients from multiple RACFs, yielding 467 ED presentations. These constituted 2.28% of total ED visits and 9.85% of those aged 65 and above. Most of the cohort were females (59.4%), aged between 79 and 91. About 98 patients presented multiple times, and 48.2% of presentations led to hospital admissions, with 6.2% of admitted patients succumbing during the hospital stay. A documented ACD was absent in 42.9% of the cohort. Statistically significant results include a correlation between male sex and an increased frequency of ED representations (p=0.0422) and a longer ED stay duration for admitted patients (p<0.0001). No significant associations were found between ACD presence and ED representations, ACD and sex, or between age and duration of stay in the ED. Age did not differ significantly among patients with single or multiple presentations or between patients with or without ACD. Regarding fall-related presentations, no significant sex-based difference in admission rates was found. The duration of stay between surgical and medical admissions was also statistically indifferent. Conclusion Our study highlights the significant utilisation of ED services by RACF residents, mainly males. The substantial percentage of these presentations resulting in hospital admissions underlines the critical nature of these visits. The absence of ACD in a significant portion of the cohort and the lack of its influence on the frequency of representations signal the need for further exploration. The results underline the ongoing challenge of meeting the complex healthcare needs of RACF residents and emphasise the importance of gender-specific interventions and efficient hospital utilisation strategies to optimise healthcare delivery in this population. Future studies should further investigate the underlying reasons for these findings to inform targeted strategies for reducing unnecessary ED visits and hospital admissions. Furthermore, fall-related presentations necessitate comprehensive ED assessments and integrated management approaches.

Changes in low-acuity patient volume in an emergency department after launching a walk-in clinic.

Unscheduled low-acuity care options are on the rise and are often expected to reduce emergency department (ED) visits. We opened an ED-staffed walk-in clinic (WIC) as an alternative care location for low-acuity patients at a time when ED visits exceeded facility capacity and the impending flu season was anticipated to increase visits further, and we assessed whether low-acuity ED patient visits decreased after opening the WIC. In this retrospective cohort study, we compared patient and clinical visit characteristics of the ED and WIC patients and conducted interrupted time-series analyses to quantify the impact of the WIC on low-acuity ED patient visit volume and the trend. There were 27,211 low-acuity ED visits (22.7% of total ED visits), and 7,058 patients seen in the WIC from February 26, 2018, to November 17, 2019. Low-acuity patient visits in the ED reduced significantly immediately after the WIC opened (P=0.01). In the subsequent months, however, patient volume trended back to pre-WIC volumes such that there was no significant impact at 6, 9, or 12 months (P=0.07). Had WIC patients been seen in the main ED, low-acuity volume would have been 27% of the total volume rather than the 22.7% that was observed. The WIC did not result in a sustained reduction in low-acuity patients in the main ED. However, it enabled emergency staff to see low-acuity patients in a lower resource setting during times when ED capacity was limited.

Association of limited English proficiency with emergency department irregular departures and return visits: A cross-sectional cohort study in the Upper Midwest between January 2018 and December 2021.

Patients with limited English proficiency (LEP) have been shown to experience disparities in emergency department (ED) care. The objectives of this study were to examine the associations between LEP and irregular ED departures and return ED visits. We conducted a multicenter cross-sectional analysis of 18 EDs within an integrated health system in the upper Midwest from January 1, 2018, to December 31, 2021. ED visits of pediatric and adult patients who were discharged on the index visit were included for analysis. We analyzed the association of LEP with irregular departures, 72-h and 7-day return visits, and ED disposition at the time of that return visit. Multivariable model associations were calculated using generalized estimating equations and reported as odds ratios (OR) with 95% confidence intervals (CIs). A total of 745,464 total ED visits were analyzed, including 27,906 (3.7%) visits among patients with LEP. The most common preferred languages among patients with LEP were Spanish (12,759; 45.7%), Somali (4978; 17.8%), and Arabic (3185; 11.4%). After multivariable adjustment there were no differences in proportions of irregular departures (OR 1.09, 95% CI 0.99-1.21), 72-h returns (OR 0.99, 95% CI 0.92-1.06), or 7-day returns (OR 0.99, 95% CI 0.93-1.05) between patients with LEP or English proficiency. Patients with LEP returning within 72 h (OR 1.19, 95% CI 1.01-1.40) and 7 days (OR 1.15, 95% CI 1.01-1.33) were more likely to be admitted to the hospital. After multivariable adjustment, we did not find an increased frequency of irregular ED departures or 72-h or 7-day returns among patients with LEP compared with people proficient in English. However, we did find that higher proportions of patients with LEP were admitted to the hospital at the time of the return ED visit.

Patterns of US Mental Health–Related Emergency Department Visits During the COVID-19 Pandemic

Numerous studies have shown that the prevalence of mental health (MH) conditions worsened during the COVID-19 pandemic. Further research is needed on this phenomenon over a longer time horizon that considers the increasing trend in MH conditions before the pandemic, after the pandemic onset, and after vaccine availability in 2021. To track how patients sought help in emergency departments (EDs) for non-MH and MH conditions during the pandemic. This cross-sectional study used administrative data on weekly ED visits and a subset of visits for MH from the National Syndromic Surveillance Program from January 1, 2019, to December 31, 2021. Data were reported from the 10 US Department of Health and Human Services (HHS) regions (Boston, New York, Philadelphia, Atlanta, Chicago, Dallas, Kansas City, Denver, San Francisco, and Seattle) for five 11-week periods. Data analysis was performed in April 2023. Weekly trends in total ED visits, mean MH-related ED visits, and proportion of ED visits for MH conditions were investigated to determine changes in each measure after the pandemic onset. Prepandemic baseline levels were established from 2019 data, and time trends of these patterns were examined in the corresponding weeks of 2020 and 2021. A fixed-effects estimation approach with weekly ED region data by year was used. There were 1570 total observations in this study (52 weeks in 2019, 53 weeks in 2020, and 52 weeks in 2021). Statistically significant changes in non-MH and MH-related ED visits were observed across the 10 HHS regions. The mean total number of ED visits decreased by 45 117 (95% CI, -67 499 to -22 735) visits per region per week (39% decrease; P = .003) in the weeks after the pandemic onset compared with corresponding weeks in 2019. The mean number of ED visits for MH conditions (-1938 [95% CI, -2889 to -987]; P = .003) decreased significantly less (23% decrease) than the mean number of total visits after the onset of the pandemic, increasing the mean (SD) proportion of MH-related ED visits from 8% (1%) in 2019 to 9% (2%) in 2020. In 2021, the mean (SD) proportion decreased to 7% (2%), and the mean number of total ED visits rebounded more than that of mean MH-related ED visits. In this study, MH-related ED visits demonstrated less elasticity than non-MH visits during the pandemic. These findings highlight the importance of addressing the provision of adequate MH services, both in acute and outpatient settings.

Rapid Detection of Influenza Outbreaks in Long-Term Care Facilities Reduces Emergency Room Visits and Hospitalization: A Randomized Trial

ObjectivesTo assess whether the use of rapid influenza diagnostic tests (RIDTs) for long-term care facility (LTCF) residents with acute respiratory infection is associated with increased antiviral use and decreased health care utilization. DesignNonblinded, pragmatic, randomized controlled trial evaluating a 2-part intervention with modified case identification criteria and nursing staff–initiated collection of nasal swab specimen for on-site RIDT. Setting and ParticipantsResidents of 20 LTCFs in Wisconsin matched by bed capacity and geographic location and then randomized. MethodsPrimary outcome measures, expressed as events per 1000 resident-weeks, included antiviral treatment courses, antiviral prophylaxis courses, total emergency department (ED) visits, ED visits for respiratory illness, total hospitalizations, hospitalizations for respiratory illness, hospital length of stay, total deaths, and deaths due to respiratory illness over 3 influenza seasons. ResultsOseltamivir use for prophylaxis was higher at intervention LTCFs [2.6 vs 1.9 courses per 1000 person-weeks; rate ratio (RR) 1.38, 95% CI 1.24-1.54; P < .001]; rates of oseltamivir use for influenza treatment were not different. Rates of total ED visits (7.6 vs 9.8/1000 person-weeks; RR 0.78, 95% CI 0.64-0.92; P = .004), total hospitalizations (8.6 vs 11.0/1000 person-weeks; RR 0.79, 95% CI 0.67-0.93; P = .004), and hospital length of stay (35.6 days vs 55.5 days/1000 person-weeks; RR 0.64, 95% CI 0.0.59-0.69; P < .001) were lower at intervention as compared to control LTCFs. No significant differences were noted for respiratory-related ED visits or hospitalizations or in rates for all-cause or respiratory-associated mortality. Conclusions and ImplicationsThe use of low threshold criteria to trigger nursing staff–initiated testing for influenza with RIDT resulted in increased prophylactic use of oseltamivir. There were significant reductions in the rates of all-cause ED visits (22% decline), hospitalizations (21% decline), and hospital length of stay (36% decline) across 3 combined influenza seasons. No significant differences were noted in respiratory-associated and all-cause deaths between intervention and control sites.

Difference in impact on emergency department visits following four major peaks of COVID-19 cases

Objective: Several variants of SARS-CoV-2 have emerged since its first appearance in 2019, greatly impacting healthcare systems across the globe. Previous literature indicated a substantial decline in emergency department (ED) visits in hospitals since the start of the COVID-19 pandemic. However, little research has been done to compare different variants’ (Ancestral, Alpha, Delta, Omicron, etc.) impact on patients presenting to the ED. Thus, the purpose of this retrospective observational study is to compare the changes in total ED volume following four major peaks of SARS-CoV-2 infection within a multi-hospital health system.Methods: Utilizing electronic healthcare record (EHR) data, total ED visits (484,268) and COVID-19 case counts (24,358) were collected and analyzed to compare ED census and COVID-19 trends across four years and four variant peak periods, from January 2019 to June 2022.Results: Results showed that ED visits declined after the first two major peaks (Ancestral and Alpha) in COVID-19 cases, which was consistent with national trends and prevailing literature. In contrast, ED visits increased following the fourth major peak (Omicron) in COVID-19 cases.Conclusions: The increase in ED visits following the fourth major peak was inconsistent with previous literature and trends. This may be attributed to the severity differences between variants, increased vaccination uptake, newly adopted public countermeasures, and evolving perceptions of safety and fear regarding COVID-19. These results underscore the critical importance for health administrators and policy planners to be cognizant of new strategies that alleviate barriers to receiving emergency care, especially during times of crisis.

397 Regulations and Marketing of Energy Drinks in the United States: A Survey of University Student Beliefs about Caffeine Consumption

OBJECTIVES/GOALS: To understand how energy drinks are marketed and regulated and the effects of these policies on adolescent consumption and perceptions of the product. METHODS/STUDY POPULATION: A review of research studies using the PubMed database (PubMed.gov); clinical trials (clinicaltrials.gov); FDA Recall, Market Withdrawals, and Safety Alerts (FDA.gov); and emergency department (ED) visits from reports from the Drug Abuse Warning Network (DAWN) were conducted. A survey is being designed and will be sent to undergraduate and graduate university students through advertised QR codes and university email chains sent out to student organizations and courses. The survey will determine the percentage of respondents who consume caffeine, the frequency in which individuals consume caffeine, and reasons for consuming caffeine. The survey also seeks to understand perceptions and thoughts on energy drinks and caffeine regulation and consumption. RESULTS/ANTICIPATED RESULTS: From January 1st, 2000, to August 5th, 2022, 112 research studies investigated the physiological impact of energy drinks on adolescents, and 13 clinical trials from the age group of 0-17 were conducted. No FDA recalls have been observed for energy drinks or the top 4 brands within the US (by sales; Red Bull, Monster, Bang Energy, Rockstar), though some recalls regarding container manufacturing were made outside the US. ED visits from energy drinks doubled from 2007 to 2011 with 1/10 of them resulting in hospitalization. 58% of the total ED visits were exclusively related to energy drinks. It is anticipated that survey results will indicate trends of frequent caffeine/energy drink consumption among college students for studying, but students will not have a clear understanding of recommended caffeine intake. DISCUSSION/SIGNIFICANCE: Due to the lack of regulations and studies surrounding energy drinks, the dangers (as seen from ER visits) to public health are concerning. Regulatory agencies should invest in developing new protocols or regulations regarding the content of energy drinks as well as find ways to monitor the marketing strategies more closely behind them.

Are disparities in emergency department imaging exacerbated during high-volume periods?

PurposeEvaluate if disparities in the emergency department (ED) imaging timeline exist, and if disparities are altered during high volume periods which may stress resource availability. MethodsThis retrospective study was conducted at a four-hospital healthcare system. All patients with at least one ED visit containing imaging from 1/1/2016 to 9/30/2020 were included. Peak hours were defined as ED encounters occurring between 5 pm and midnight, while all other ED encounters were non-peak hours. Patient-flow data points included ED length of stay (LOS), image acquisition time, and diagnostic image assessment time. Results321,786 total ED visits consisted of 102,560 during peak hours and 219,226 during non-peak hours. Black patients experienced longer image acquisition and image assessment times across both time periods (TR = 1.030; p < 0.001 and TR = 1.112; p < 0.001, respectively); Black patients also had increased length of stay compared to White patients, which was amplified during peak hours. Likewise, patients with primary payer insurance experienced significantly longer image acquisition and image assessment times in both periods (TR > 1.00; p < 0.05 for all). Females had longer image acquisition and image assessment time and the difference was more pronounced in image acquisition time during both peak and non-peak hours (TR = 1.146 and TR = 1.139 respectively with p < 0.001 for both). ConclusionWhen measuring radiology time periods, patient flow throughout the ED was not uniform. There was unequal acceleration and deceleration of patient flow based on racial, gender, age, and insurance status. Segmentation of patient flow time periods may allow identification of causes of inequity such that disparities can be addressed with targeted actions.

Rapid Detection of Influenza Outbreaks in Long Term Care Facilities Reduces Emergency Room Visits and Hospitalization.

Context: Influenza is a significant respiratory pathogen for residents of long-term care facilities (LTCFs). Rapid influenza detection tests (RIDT) may enable early outbreak detection allowing a timely response. Objective: We assessed whether RIDT for LTCF residents with acute respiratory infection is associated with increased antiviral use and decreased healthcare utilization. Study Design and Analysis: Non-blinded, pragmatic, randomized controlled trial (clinicaltrials.gov: NCT0296487). Setting: Wisconsin LTCFs. Population Studied: Residents of 20 LTCFs matched by bed capacity and geographic location. Intervention: (1) modified case identification criteria and (2) nursing-staff initiated collection of nasal swab specimen for on-site RIDT. Outcome Measures: Primary outcome measures, expressed as events per 1000 resident-weeks, included antiviral treatment courses, aniviral prophylaxis courses, total emergency department (ED) visits, ED visits for respiratory illness, total hospitalization, hospitalization for respiratory illness, hospital length of stay, total deaths, and deaths due to respiratory illness over three influenza seasons. Results: Oseltamivir use for prophylaxis was higher at intervention LTCFs (2.6 vs 1.9 courses per 1000 person-weeks; rate ratio: 1.38; 95%CI: 1.24-1.54; p<0.001); rates of oseltamivir use for treatment were not different. Rates of total ED visits (7.6 vs 9.8/1000 person-weeks; RR=0.78; 95%CI: 0.64-0.92; p=0.004), total hospitalizations (8.6 vs 11.0/1000 person-weeks; RR=0.79; 95%CI: 0.67-0.93; p=0.004), and hospital length of stay (35.6 days vs 55.5 days/1000 person-weeks; RR=0.64; 95%CI: 0.0.59-0.69; p<0.001) were lower at intervention as compared to control LTCFs. No significant differences were noted for respiratory-related ED visits or hospitalizations or in rates for all-cause or respiratory-associated mortality. Conclusions: The use of low threshold criteria to trigger nursing staff-initiated testing for influenza with RIDT resulted in increased prophylactic use of oseltamivir. There were significant reductions in the rates of all-cause ED visits (22% decline), hospitalizations (21% decline), and hospital length of stay (36% decline) across three combined influenza seasons. No significant differences were noted in respiratory-associated and all-cause deaths between intervention and control sites. This feasible, and low-cost intervention may provide significant benefit and should be further tested in other settings.

Healthcare Utilization Among Infants Discharged From the Neonatal Intensive Care Unit: A Descriptive Cost Analysis.

The cost of readmissions of neonatal intensive care unit (NICU) graduates within 6 months and a year of their life is well-studied. However, the cost of readmissions within 90 days of NICU discharge is unknown. This study's objective was to estimate the overall and mean cost of healthcare use for unplanned hospital visits of NICU graduates within 90 days of discharge A retrospective review of all infants discharged between 1/1/2017 and 03/31/2017 from a large hospital system NICUs was conducted. All unplanned hospital visits (readmissions or stand-alone emergency department (ED) visits) occurring within 90 days post NICU discharge were included. The total and mean cost of unplanned hospital visits were computed and adjusted to 2021 US dollars. The total cost was estimated to be $785 804 with a mean of $1898 per patient. Hospital readmissions accounted for 98% ($768 718) of the total costs and ED visits for 2% ($17 086). The mean cost per readmission and stand-alone ED visit were $25 624 and $475 respectively. The highest mean total cost of unplanned hospital readmission was noted in extremely low birth weight infants ($25 295). Interventions targeted to reduce hospital readmissions after NICU discharge have the potential to significantly reduce healthcare costs for this patient population.