Department of Emergency Medicine

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    1-year mortality following contrast-induced nephropathy
    (2013) Mitchell, Alice M; Jones, Alan E; Tumlin, James A; Kline, Jeffrey A.
    Objective: The aim of this study was to determine the 1-year mortality risk subsequent to Contrast-Induced Nephropathy (CIN) following CECT imaging, relative to other well-recognized predictors of mortality. Methods: We followed a prospective, consecutive cohort of ambulatory patients who received intravenous contrast for CECT for the outcome of death from any cause within 1 year. In a multivariate analysis, we compared CIN with other predictors of mortality: active malignancy, coronary artery disease (CAD), congestive heart failure (CHF) and age ≥70 years. Anticipating that terminal cancers would account for the majority of deaths in this population, we also analyzed the subset of patients without an active malignancy at the time of enrollment. Results: We followed 633 patients and 46 died (7%, 95%CI: 5-9%) within 1 year. The incidence of CIN was 11% (95%CI: 8-14%). Active malignancy (HR 9.2, 95%CI: 5.1-16.8), CIN (HR 2.4, 95%CI: 1.3-4.6), CHF (HR 2.1, 95%CI: 1.0-4.2), CAD (HR 2.2, 95%CI: 1.0-5.5) and age ≥70 years (HR 1.8, 95%CI: 1.0-3.8) were significant predictors of all-cause mortality. Among patients without active malignancies, the mortality rate was 4% (25/580, 95%CI: 3-6%) and CIN (HR 4.0, 95%CI: 1.7-9.6) and age ≥70 years (HR 3.7, 95%CI: 1.4-9.7) were significantly associated with death, whereas CAD (HR 2.5, 95%CI: 0.8-7.7) and CHF (HR 1.8, 95%CI: 0.6-5.3) were not. Conclusions: The development of CIN following CECT is associated with an increased likelihood of death at 1 year among patients with and without active malignancies, comparable to CAD, CHF and advanced age.
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    2-Hour Accelerated Diagnostic Protocol to Assess Patients With Chest Pain Symptoms Using Contemporary Troponins as the Only Biomarker
    (2012-06) Than, Martin; Cullen, Louise; Aldous, Sally; Parsonage, William A; Reid, Christopher M; Greenslade, Jaimi; Flaws, Dylan; Hammett, Christopher J; Beam, Daren M; Ardagh, Michael W; Troughton, Richard; Brown, Anthony FT; George, Peter; Florkowski, Christopher M; Kline, Jeffrey A.; Peacock, W Frank; Maisel, Alan S; Lim, Swee Han; Lamanna, Arvin; Richards, A Mark
    Objectives The purpose of this study was to determine whether a new accelerated diagnostic protocol (ADP) for possible cardiac chest pain could identify low-risk patients suitable for early discharge (with follow-up shortly after discharge). Background Patients presenting with possible acute coronary syndrome (ACS), who have a low short-term risk of adverse cardiac events may be suitable for early discharge and shorter hospital stays. Methods This prospective observational study tested an ADP that included pre-test probability scoring by the Thrombolysis In Myocardial Infarction (TIMI) score, electrocardiography, and 0 + 2 h values of laboratory troponin I as the sole biomarker. Patients presenting with chest pain due to suspected ACS were included. The primary endpoint was major adverse cardiac event (MACE) within 30 days. Results Of 1,975 patients, 302 (15.3%) had a MACE. The ADP classified 392 patients (20%) as low risk. One (0.25%) of these patients had a MACE, giving the ADP a sensitivity of 99.7% (95% confidence interval [CI]: 98.1% to 99.9%), negative predictive value of 99.7% (95% CI: 98.6% to 100.0%), specificity of 23.4% (95% CI: 21.4% to 25.4%), and positive predictive value of 19.0% (95% CI: 17.2% to 21.0%). Many ADP negative patients had further investigations (74.1%), and therapeutic (18.3%) or procedural (2.0%) interventions during the initial hospital attendance and/or 30-day follow-up. Conclusions Using the ADP, a large group of patients was successfully identified as at low short-term risk of a MACE and therefore suitable for rapid discharge from the emergency department with early follow-up. This approach could decrease the observation period required for some patients with chest pain. (An observational study of the diagnostic utility of an accelerated diagnostic protocol using contemporary central laboratory cardiac troponin in the assessment of patients presenting to two Australasian hospitals with chest pain of possible cardiac origin; ACTRN12611001069943)
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    The 2016 Model of the Clinical Practice of Emergency Medicine
    (Elsevier, 2017-06) Counselman, Francis L.; Babu, Kavita; Edens, Mary Ann; Gorgas, Diane L.; Hobgood, Cherri; Marco, Catherine A.; Katz, Eric; Rodgers, Kevin; Stallings, Leonard A.; Wadman, Michael C.; Beeson, Michael S.; Keehbauch, Julia N.; Emergency Medicine, School of Medicine
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    24-year Old Medical Student with Raynaud's Phenomenon
    (Elsevier, 2016-10) Leech, Lindsay S.; Welch, Julie L.; Department of Emergency Medicine, IU School of Medicine
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    25 In-hospital Change in Lung Ultrasound Congestion Score Predicts Heart Failure Rehospitalization and Death: Implications for Clinical Trials
    (Cambridge University Press, 2023-04-24) Harrison, Nicholas Eric; Desai, Ankit; Pang, Peter; Emergency Medicine, School of Medicine
    OBJECTIVES/GOALS: Lung Ultrasound Congestion Score (LUS-CS) is a proposed measure for guiding treatment in acute heart failure (AHF). An emergency department (ED) pilot trial of LUS-guided diuresis showed reduced LUS-CS at 48 hours but no difference at hospital discharge or for clinical outcomes. We hypothesized total change in LUS-CS would predict adverse outcomes. METHODS/STUDY POPULATION: This was a post-hoc secondary analysis of the BLUSHED-AHF trial. BLUSHED-AHF was a pilot trial in which AHF patients were randomized to a LUS-guided diuresis strategy vs. usual care in the ED. The intervention was stopped after the ED course (i.e. during hospitalization). BLUSHED-AHF was designed for the intervention to target absolute values of LUS-CS over time, rather than change in LUS-CS from each patient’s baseline. We fit a cox regression model for a primary outcome of death or AHF rehospitalization, with total (ED to Hospital Discharge) change in LUS-CS as the primary predictor, adjusted for the Get-With-The-Guidelines heart failure risk score (GWTG). Survival curves were plotted, and hazard ratios calculated. RESULTS/ANTICIPATED RESULTS: 128 patients in BLUSHED-AHF were analyzed. Greater reduction in LUS-CS from ED to hospital discharge predicted event-free survival (HR = 0.74 for each 20 unit reduction in LUS-CS, 95%CI 0.56-0.99). This effect did not vary by hospitalization length or ED disposition. There was a significant interaction between change in LUS-CS and GWTG score. DISCUSSION/SIGNIFICANCE: LUS-CS total change, and not absolute values, predict adverse events in LUS-guided diuresis. Post-ED cessation of the intervention in BLUSHED-AHF may have precluded opportunity for clinical benefit. Future trials should run the entire hospital course, target change from baseline, and consider patient selection by AHF severity and initial LUS-CS.
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    41: Health Insurance and Duration of Symptoms Prior to Emergency Department Visit: An Analysis of 19,850 Patients With Suspected COVID-19
    (Elsevier, 2021-08) Gunn, A.H.; Neptune, N.; Cunningham, H.M.; Conner, D.; Adkins, L.; Tait, S.D.; Pung, L.; Courtney, D.M.; Kline, Jeffrey A.; Purakal, J.D.; Emergency Medicine, School of Medicine
    Study Objectives The COVID-19 pandemic has emphasized disparities in health outcomes across social and economic strata. The mechanisms of this relationship are poorly understood, but the length of time patients exhibit symptoms prior to getting tested for COVID-19 increases the opportunity for community transmission. We hypothesized that there is a relationship between insurance coverage and the duration of COVID-19 symptoms prior to seeking care at the emergency department (ED). Methods A national, multi-institution (n=45 sites) registry collected information on ED visits in which patients were tested for suspected COVID-19. Demographics and clinical characteristics were summarized for the total cohort. Insurance was categorized into private (private or commercial), public (Medicare, Medicaid, or dual-eligible), worker’s compensation or unknown, or no health insurance. Negative binomial regression was used to analyze both the unadjusted and adjusted relationship between insurance and the time from symptom onset to ED presentation. Adjustments included age, sex, race, ethnicity, medical history, smoking status, drug use, and number of COVID symptoms. Results Baseline demographic and clinical characteristics of included patients (n=19,850) are displayed in Table 1. The average time from symptom onset to ED presentation among patients with suspected COVID-19 was 5.4 days. In unadjusted analysis, patients with private insurance had significantly longer time of symptom onset prior to ED presentation than patients with public insurance (5.6 vs. 5.3 days, p=0.007). After multivariate adjustment, increased duration of symptoms prior to ED presentation was significantly associated with private insurance [rate ratio (RR) 1.07, 95% confidence interval (CI): 1.03 – 1.10] and no health insurance (RR 1.06, 95% CI: 1.07 – 1.13) compared to public insurance (Figure 1). Patients residing in states with Medicaid expansion were not independently associated with the increased time to ED presentation (RR 1.03, 95% CI: 1.00 – 1.07). Conclusion Patients with private insurance or no insurance waited significantly longer to present to the ED. The extended duration of symptoms prior to presentation increases the opportunities for community transmission. The results from this study can be used by health systems to target the patients at increased risk for delayed ED presentation.
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    5 Year-old with behavior change after febrile illness
    (Elsevier, 2016-10) Snow, Jerry W.; Tormoehlen, L. M.; Department of Emergency Medicine, IU School of Medicine
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    72-year-old with abdominal wall abscess
    (Elsevier, 2017-01) Leech, Lindsay; Welch, Julie; Department of Emergency Medicine, School of Medicine
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    A Lecture to Teach an Approach and Improve Resident Comfort in Leading Resuscitation of Young Infants in the Emergency Department
    (University of California, 2022-01-15) Whitehead, Anne; Emergency Medicine, School of Medicine
    Audience: The intended audience of this lecture is emergency medicine residents at all levels of training. It is also appropriate for practicing emergency physicians interested in improving comfort in resuscitating sick young infants, ages 0-60 days. Introduction: The majority of sick and injured children in the United States are seen and treated in general emergency departments.1 This includes very young infants (0-60 days old) in need of immediate resuscitation. Resuscitation of children in this age group involves use of specific knowledge and skills that residents and emergency physicians in general have fewer opportunities to practice.2,3 Emergency medicine residents and practicing emergency physicians often report this as an area of particular discomfort in practice.4,5 It is important that the inconsistent and infrequent opportunities to resuscitate young infants during emergency medicine residency and beyond are supplemented by residency didactics that focus on improving comfort and skills with this population of sick children. This lecture focuses on a practical approach intended to improve the relevant knowledge, skills, and confidence required to stabilize a critically ill young infant in a general emergency department. Educational objectives: By the end of this lecture, participants should be able to:Apply a consistent approach to the initial resuscitation of a critically ill young infant in the emergency department.Select appropriate medications and equipment for use in resuscitation of critically ill young infants.Describe the components of the Pediatric Assessment Triangle,6 which can be used to identify critically ill infants and children.Improve comfort in resuscitating young infants in the emergency department. Educational methods: This is a live lecture format using PowerPoint slides. The lecture emphasizes a practical approach to improve the skills and knowledge required for successful young infant resuscitation. It utilizes a case-based approach, and encourages the audience to determine next steps in care to mimic the real time decision-making required for care of critically ill young infants in the ED. Research methods: Learners were asked to fill out anonymous pre- and post quizzes immediately prior to and directly after the lecture was given. These surveys included questions to assess resident knowledge as well as resident comfort as it pertained to resuscitation of critically ill young infants. Results: Resident comfort with resuscitation of young infants improved with a mean Standard Deviation (SD) pre-lecture rating of 23.1(14.9) on a 100-point visual analog scale and a mean (SD) post lecture rating of 46.7(14.6). Resident performance on all knowledge base questions improved on the post-lecture quiz for all four questions asked. Discussion: This lecture was effective in improving emergency medicine resident comfort and practical knowledge pertaining to resuscitation of young infants in the emergency department. The emphasis on a practical approach was well received by the resident audience, and they engaged well with audience participation portions of the lecture. The impact of the lecture can be enhanced by having the lecturer share their own real-world experience of resuscitation of young infants in the emergency department during the discussion portions of the lecture.
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    A novel emergency medical services protocol to improve treatment time for large vessel occlusion strokes
    (PLOS, 2022-02-25) Glober , Nancy; Supples , Michael; Persaud, Sarah; Kim , David; Liao , Mark; Glidden , Michele; O'Donnell , Dan; Tainter , Christopher; Boustani , Malaz; Alexander, Andreia; Emergency Medicine, School of Medicine
    In many systems, patients with large vessel occlusion (LVO) strokes experience delays in transport to thrombectomy-capable centers. This pilot study examined use of a novel emergency medical services (EMS) protocol to expedite transfer of patients with LVOs to a comprehensive stroke center (CSC). From October 1, 2020 to February 22, 2021, Indianapolis EMS piloted a protocol, in which paramedics, after transporting a patient with a possible stroke remained at the patient's bedside until released by the emergency department or neurology physician. In patients with possible LVO, EMS providers remained at the bedside until the clinical assessment and CT angiography (CTA) were complete. If indicated, the paramedics at bedside transferred the patient, via the same ambulance, to a nearby thrombectomy-capable CSC with which an automatic transfer agreement had been arranged. This five-month mixed methods study included case-control assessment of use of the protocol, number of transfers, safety during transport, and time saved in transfer compared to emergent transfers via conventional interfacility transfer agencies. In qualitative analysis EMS providers, and ED physicians and neurologists at both sending and receiving institutions, completed e-mail surveys on the process, and offered suggestions for process improvement. Responses were coded with an inductive content analysis approach. The protocol was used 42 times during the study period; four patients were found to have LVOs and were transferred to the CSC. There were no adverse events. Median time from decision-to-transfer to arrival at the CSC was 27.5 minutes (IQR 24.5-29.0), compared to 314.5 minutes (IQR 204.0-459.3) for acute non-stroke transfers during the same period. Major themes of provider impressions included: incomplete awareness of the protocol, smooth process, challenges when a stroke alert was activated after EMS left the hospital, greater involvement of EMS in patient care, and comments on communication and efficiency. This pilot study demonstrated the feasibility, safety, and efficiency of a novel approach to expedite endovascular therapy for patients with LVOs.