Institution of a difficult airway response team for emergency department patients with anticipated or encountered difficult airways: Descriptive analysis of a 5-year experience at an academic teaching hospital

Objectives

This study aimed to describe characteristics and outcomes associated with difficult airway response team (DART) encounters in the emergency department (ED).

Methods

We performed a descriptive analysis of a prospective, single-center database of DART encounters in the ED from April 1, 2016 to March 31, 2021 cross-referenced with retrospective chart review. Adult ED patients ≥18 years old for whom a DART was activated were eligible. We prospectively collected activation characteristics, intubation indications, operator characteristics, and intubation methods used for DART encounters. Retrospective chart review was conducted to obtain patient demographics and outcome variables. Descriptive analyses were computed for all outcomes.

Results

We analyzed 89 DART encounters. No intubation attempts were made prior to DART activation in 52 cases (58.4%). The most common indications for intubation were angioedema (n = 17, 19.1%) or other airway obstruction (n = 15, 16.9%). A definitive airway was established by anesthesiology (n = 46, 51.7%), emergency medicine (n = 25, 28.1%), trauma surgery (n = 9, 10.1%), and ENT (n = 5, 5.6%). The most common method of intubation used to establish a definitive airway was video laryngoscopy with a bougie or D-blade (n = 29, 32.6%) followed by flexible fiberoptic intubation (n = 19, 21.3%). A surgical airway was required in eight encounters (cricothyrotomy [n = 4, 4.5%]; tracheostomy [n = 4, 4.5%]). Cases were managed in the ED (n = 73, 82%), operating room (OR) (n = 10, 11.2%), and intensive care unit (ICU) (n = 1, 1.1%). All patients requiring intubation had an endotracheal or surgical airway established.

Conclusion

Our findings provide important insights regarding ED DART utilization and have implications when considering institution of a DART in the ED.

Impact of infection prevention and control practices, including personal protective equipment, on the prevalence of hospital-acquired infections in acute care hospitals during COVID-19: a systematic review and meta-analysis

BACKGROUND

The COVID-19 pandemic has posed an unprecedented challenge to healthcare systems globally. Personal protective equipment has played a fundamental role in protecting healthcare workers and patients, but its effectiveness in reducing hospital-acquired infections (HAIs) during the pandemic remains a subject of debate.

AIM

To conduct a synthesis and meta-analysis of the best available evidence of the prevalence of HAIs using a before/after approach.

METHODS

A three-step search strategy was undertaken to locate published and unpublished studies. A search was performed in MEDLINE, CINAHL, Embase, PsycINFO, and Google Scholar. Screening of studies, data extraction and critical appraisal were performed by four independent reviewers. Meta-analysis was conducted using Review Manager. The review is reported in accordance with PRISMA and JBI guidelines for systematic reviews.

FINDINGS

Fifteen studies were included in the review. Three studies indicated a statistically significant increase in the number of positive cultures during the COVID-19 period compared to the pre-COVID-19 period. Pooled data showed a non-significant decrease in the number of patients with positive cultures in the COVID-19 period compared to pre-COVID-19. There were no significant differences in various bacterial infections except for a significant decrease in respiratory infections. Pooled data for central line-associated bloodstream infections (CLABSIs) indicated a significant increase during the COVID-19 period, but one study reported an increase in CLABSI incidence.

CONCLUSION

The evidence from this review demonstrates a mixed impact of the COVID-19 pandemic precautions on HAIs.

Contaminant Organism Growth in Febrile Infants at Low Risk for Invasive Bacterial Infection

In this multicenter, cross-sectional, secondary analysis of 4042 low-risk febrile infants, nearly 10% had a contaminated culture obtained during their evaluation (4.9% of blood cultures, 5.0% of urine cultures, and 1.8% of cerebrospinal fluid cultures). Our findings have important implications for improving sterile technique and reducing unnecessary cultures.

"Let us take care of the medicine": A qualitative analysis of physician communication when caring for febrile infants

BACKGROUND

Guidelines for the management of febrile infants emphasize patient-centered communication. Although patient-centeredness is central to high-quality healthcare, biases may impact physicians' patient-centeredness. We aimed to 1) identify physicians' assumptions that inform their communication with parents of febrile infants and 2) examine physicians' perceptions of bias.

METHODS

We recruited physicians from three academic pediatric emergency departments (EDs) for semi-structured interviews. We applied a constant comparative method approach to conduct a thematic analysis of interview transcripts. Two coders followed several analytical steps: 1) discovery of concepts and code assignment, 2) identification of themes by grouping concepts, 3) axial coding to identify thematic properties, and 4) identifying exemplar excerpts for rich description. Thematic saturation was based on repetition, recurrence, and forcefulness.

RESULTS

Fourteen physicians participated. Participants described making assumptions regarding three areas: 1) the parent's affect, 2) the parent's social capacity, and 3) the physician's own role in the parent-physician interaction. Thematic properties highlighted the importance of the physician's assumptions in guiding communication and decision-making. Participants acknowledged an awareness of bias, and specifically noted that language bias influenced the assumptions that informed their communication.

CONCLUSIONS

ED physicians described subjective assumptions about parents that informed their approach to communication when caring for febrile infants. Given the emphasis on patient-centered communication in febrile infant guidelines, future efforts are necessary to understand how assumptions are influenced by biases, the effect of such behaviors on health inequities, and how to combat this.

WHAT'S NEW

Physician communication drives health outcomes. In this qualitative investigation, physicians described making assumptions about parents, based on subjective assessments, which informed their communication and decision-making. This represents a step towards understanding how biases inform communication and result in health inequity.

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.

Prospective study of HDR brachytherapy (BT), external beam radiotherapy (EBRT) and androgen deprivation therapy (ADT): 10-years experience of an MRI-guided approach

OBJECTIVES

To evaluate the predictive factors for biochemical failure and distant metastases in a prospective cohort of patients with localized prostate cancer treated with the combination of HDR BT and EBRT.

METHODS AND MATERIALS

Patients with intermediate (IR) or high-risk (HR) prostate adenocarcinoma received a single fraction of HDR of 15 Gy combined with RT of 37.5 Gy in 15 fractions. ADT duration was used depending on risk-group. Descriptive analyses were performed. Univariate and multivariate Hazard Ratios were obtained. Finally, the Kaplan-Meier model was used to describe the survival of the events of interest.

RESULTS

309 patients were treated prospectively (199 were IR and 110 HR). Median age was 72 years; 58.3 % were MRI stage ≤ T2c, 34.1 % T3a and 7.6 % T3b; ISUP-grade 1-3 in 78.9 % and ISUP 4-5 in 21.1 %. 71.8 % of patients had ≤ 50 % positive-cores in biopsy and 28.2 % had > 50 %. Median pre-treatment PSA was 9.9 ng/mL. After a median follow-up of 88 months, 41 patients presented biochemical failure and 18 developed distant metastases. Multivariate cox-regression analyses found that MR-T3b Stage (HR 3.88, p = 0.001) and ADT use (HR 3.99, p = 0.03) were the only predictive factors for biochemical failure and the number of positive cores (>50 %) the only independent predictive factor of distant metastases (HR 4.36, p = 0.002).

CONCLUSIONS

Patients with mpMRI evidence of invasion of the SV and involvement of more than 50% of the cores in the prostate biopsy are patients with a higher risk of presenting a biochemical recurrence or developing metastasis due to their prostate cancer, respectively.

Racial disparities in septic shock mortality: a retrospective cohort study

Background

Patients with septic shock have the highest risk of death from sepsis, however, racial disparities in mortality outcomes in this cohort have not been rigorously investigated. Our objective was to describe the association between race/ethnicity and mortality in patients with septic shock.

Methods

Our study is a retrospective cohort study of adult patients in the OneFlorida Data Trust (Florida, United States of America) admitted with septic shock between January 2012 and July 2018. We identified patients as having septic shock if they received vasopressors during their hospital encounter and had either an explicit International Classification of Disease (ICD) code for sepsis, or had an infection ICD code and received intravenous antibiotics. Our primary outcome was 90-day mortality. Our secondary outcome was in-hospital mortality. Multiple logistic regression with Least Absolute Shrinkage and Selection Operator (LASSO) for variable selection was used to assess associations.

Findings

There were 13,932 patients with septic shock in our cohort. The mean age was 61 years (SD 16), 68% of the cohort identified as White (n = 9419), 28% identified as Black (n = 3936), 2% (n = 294) identified as Hispanic ethnicity, and 2% as other races not specified in the previous groups (n = 283). In our logistic regression model for 90-day mortality, patients identified as Black had 1.57 times the odds of mortality (95% CI 1.07-2.29, p = 0.02) compared to White patients. Other significant predictors included mechanical ventilation (OR 3.66, 95% CI 3.35-4.00, p < 0.01), liver disease (OR 1.75, 95% CI 1.59-1.93, p < 0.01), laboratory components of the Sequential Organ Failure Assessment score (OR 1.18, 95% CI 1.16-1.21, p < 0.01), lactate (OR 1.10, 95% CI 1.08-1.12, p < 0.01), congestive heart failure (OR 1.19, 95% CI 1.10-1.30, p < 0.01), human immunodeficiency virus (OR 1.35, 95% CI 1.04-1.75, p = 0.03), age (OR 1.04, 95% CI 1.04-1.04, p < 0.01), and the interaction between age and race (OR 0.99, 95% CI 0.99-1.00, p < 0.01). Among younger patients (<45 years), patients identified as Black accounted for a higher proportion of the deaths. Results were similar in the in-hospital mortality model.

Interpretation

In this retrospective study of septic shock patients, we found that patients identified as Black had higher odds of mortality compared to patients identified as non-Hispanic White. Our findings suggest that the greatest disparities in mortality are among younger Black patients with septic shock.

Funding

National Institutes of Health National Center for Advancing Translational Sciences (1KL2TR001429); National Institute of Health National Institute of General Medical Sciences (1K23GM144802).

Qualitative Study of Emergency Medicine Residents' Perspectives of Trauma Leadership Development

Background

Trauma team leadership is a core skill for the practice of emergency medicine (EM). In this study our goal was to explore EM residents' perception of their trauma leadership skill development through formal and informal processes and to understand factors that may impact the development and implementation of trauma leadership skills.

Methods

Using qualitative semi-structured interviews, we explored the leadership experiences of 10 EM residents ranging from second to fourth postgraduate year. Interviews were conducted between July 26-October 31, 2019 and were audio-recorded, transcribed, and de-identified. We analyzed data using qualitative content analysis.

Results

Residents discussed three main themes: 1) sources of leadership development; 2) challenges with simultaneously assuming a dual leader-learner role; and 3) contextual factors that impact their ability to assume the leadership role, including the professional hierarchy in the clinical environment, limitations in the physical environment, and gender bias.

Conclusion

This study describes the complex factors and experiences that contribute to the development and implementation of trauma team leadership skills in EM residents. This includes three primary sources of leadership development, the dual role of leader and learner, and various contextual factors. Research is needed to understand how these factors and experiences can be leveraged or mitigated to improve resident leadership training outcomes.

A pilot study to identify pharmacogenomic and clinical risk factors associated with opioid related falls and adverse effects in older adults

Given the high prevalence of pain in older adults and current trends in opioid prescribing, inclusion of genetic information in risk prediction tools may improve opioid risk assessment. Our objectives were to (1) determine the feasibility of recruiting socioeconomically disadvantaged and racially diverse middle aged and older adult populations for a study seeking to identify risk factors for opioid-related falls and other serious adverse effects and (2) explore potential associations between the Risk Index for Overdose or Serious Opioid-induced Respiratory Depression (CIP-RIOSORD) risk class and other patient factors with falls and serious opioid adverse effects. This was an observational study of 44 participants discharged home from the emergency department with an opioid prescription for acute pain and followed for 30 days. We found pain interference may predict opioid-related falls or serious adverse effects within older, opioid-treated patients. If validated, pain interference may prove to be a beneficial marker for risk stratification of older adults initiated on opioids for acute pain.

Gaps in the Identification of Child Race and Ethnicity in a Pediatric Emergency Department

INTRODUCTION

Race and ethnicity are social constructs that are associated with meaningful health inequities. To address health disparities, it is essential to have valid, reliable race and ethnicity data. We compared child race and ethnicity as identified by the parent with that reported in the electronic health record (EHR).

METHODS

A convenience sample of parents of pediatric emergency department (PED) patients completed a tablet-based questionnaire (February-May 2021). Parents identified their child's race and ethnicity from options within a single category. We used chi-square to compare concordance between child race and ethnicity reported by the parent with that recorded in the EHR.

RESULTS

Of 219 approached parents, 206 (94%) completed questionnaires. Race and/or ethnicity were misidentified in the EHR for 56 children (27%). Misidentifications were most common among children whose parents identified them as multiracial (100% vs 15% of children identified as a single race, P < 0.001) or Hispanic (84% vs 17% of non-Hispanic children, P < 0.001), and children whose race and/or ethnicity differed from that of their parent (79% vs 18% of children with the same race and ethnicity as their parent, P < 0.001).

CONCLUSION

In this PED, misidentification of race and ethnicity was common. This study provides the basis for a multifaceted quality improvement effort at our institution. The quality of child race and ethnicity data in the emergency setting warrants further consideration across health equity efforts.

Association of Early Serum Phosphate Levels and Mortality in Patients with Sepsis

BACKGROUND

Metabolic derangements in sepsis influence phosphate levels, which may predict mortality outcomes. We investigated the association between initial phosphate levels and 28-day mortality in patients with sepsis.

METHODS

We conducted a retrospective analysis of patients with sepsis. Initial (first 24 hours) phosphate levels were divided into phosphate quartile groups for comparisons. We used repeated-measures mixed-models to assess differences in 28-day mortality across the phosphate groups, adjusting for other predictors identified by the Least Absolute Shrinkage and Selection Operator variable selection technique.

RESULTS

A total of 1,855 patients were included with 13% overall 28-day mortality (n=237). The highest phosphate quartile (>4.0 milligrams per deciliter [mg/dL]) had a higher mortality rate (28%) than the three lower quartiles (P<0.001). After adjustment (age, organ failure, vasopressor administration, liver disease), the highest initial phosphate was associated with increased odds of 28-day mortality. Patients in the highest phosphate quartile had 2.4 times higher odds of death than the lowest (≤2.6 mg/dL) quartile (P<0.01), 2.6 times higher than the second (2.6-3.2 mg/dL) quartile (P<0.01), and 2.0 times higher than the third (3.2-4.0 mg/dL) quartile (P=0.04).

CONCLUSION

Septic patients with the highest phosphate levels had increased odds of mortality. Hyperphosphatemia may be an early indicator of disease severity and risk of adverse outcomes from sepsis.

Holistic strategy for promoting effective handoffs

Background

Handoffs are ubiquitous in modern healthcare practice, and they can be a point of resilience and care continuity. However, they are prone to a variety of issues. Handoffs are linked to 80% of serious medical errors and are implicated in one of three malpractice suits. Furthermore, poorly performed handoffs can lead to information loss, duplication of efforts, diagnosis changes and increased mortality.

Methods

This article proposes a holistic approach for healthcare organisations to achieve effective handoffs within their units and departments.

Results

We examine the organisational considerations (ie, the facets controlled by higher-level leadership) and local drivers (ie, the aspects controlled by the individuals working in the units and providing patient care).

Conclusion

We propose advice for leaders to best enact the processes and cultural change necessary to see positive outcomes associated with handoffs and care transitions within their units and hospitals.

Process Modeling of ABCDE Primary Survey in Trauma Resuscitations: A Crucial First Step for Agent-Based Simulation Modeling of Complex Team-Based Clinical Processes

INTRODUCTION

Trauma teams are ad hoc, multidisciplinary teams that perform complex patient care and medical decision making under dynamic conditions. The ability to measure and thus understand trauma team processes is still limited. Agent-based simulation modeling (ABSM) can be used to investigate complex relationships and performance within a trauma team. However, the foundational work to support such efforts is lacking. The goal of this work is to develop a comprehensive process model for the primary survey in trauma that can support ABSM.

METHODS

A process model for the primary survey of patients with blunt traumatic injuries was developed using Advanced Trauma Life Support guidelines and peer-reviewed publications. This model was then validated using video recordings of 25 trauma resuscitations in a level 1 trauma center. The assessment and treatment pathway followed in each video were mapped against the defined pathway in the process model. Deviations were noted when resuscitations performance did not follow the defined pathway.

RESULTS

Overall the process model contains 106 tasks and 78 decision points across all domains, with the largest number appearing in the circulation domain, followed by airway and breathing. A total of 34 deviations were observed across all 25 videos, and a maximum of 3 deviations were observed per video.

CONCLUSIONS

Overall, our data offered validity support for the blunt trauma primary survey process model. This process model was an important first step for the use of ABSM for the support of trauma care operations and team-based processes.

The acquisition of clinical experience during GP training - how can we mitigate for the impact of COVID-19?

The COVID-19 pandemic has profoundly impacted the way general practice is run and this is expected to have had a knock-on effect upon GP training. A questionnaire-based study was designed to investigate what was happening to GP trainees 16 months into the pandemic in terms of opportunities to develop clinical experience and clinical decision-making. We also asked trainers and trainees for ideas on how we might mitigate for the effects of COVID-19. In particular, there has been decreased exposure to clinical examination during the pandemic and there appear to be gaps in opportunities to learn from urgent and unscheduled care settings and to develop skills in rapid clinical decision-making. It is interesting to consider what general practice will look like when the pandemic is over and how this will this affect the GP training curriculum going forwards. Although response rates were low, we were able to determine some emerging themes for national, local and educational review going forwards to help shape and improve GP training for the future.

“My quality of life was not the best” experiences of Australians during the COVID pandemic

Background

The social and economic impacts that have occurred during the pandemic can disproportionally affect those already experiencing poverty. The social determinants of health aggravate inequalities and can adversely affect wellbeing. This study aims to gain rich insight into Australian adults’ experiences of the social determinants of health and the impact on their wellbeing during the COVID-19 pandemic.

Methods

A descriptive qualitative study using purposive sampling to recruit participants for semi-structured interviews, conducted via videoconferencing between March-August 2021. Thematic analysis was performed with the support of NVivo 12.

Results

Participants included 20 Australian adults from various socioeconomic areas ranging in age from 21 to 65 years. Three main themes emerged from the analysis of the data: Food-related concerns; Housing outcomes; and Psychological and emotional impact. Accessing food, during the COVID-19 pandemic, for most participants who resided in low socioeconomic areas, was described as stressful and challenging. Along with the burden of food security, many participants from low socioeconomic areas expressed emotional distress in relation to securing and maintaining adequate housing.

Conclusions

The pandemic has amplified existing social determinants of health experienced by those within low socioeconomic areas, particularly those who are female and from migrant communities. The wellbeing of participants from low socioeconomic areas decreased in response to their experiences and challenges with food insecurity and housing instability, highlighting the need for housing affordability strategies and funding of emergency food relief initiatives. Food access for those in areas with high socioeconomic disadvantage, can be improved to address some of the barriers associated with food security by providing supermarket meal vouchers, access to community gardens, and school food programs.

Key messages

• The housing and food insecurity experienced by participants in this study during the pandemic has influenced their overall wellbeing.

• The pandemic has amplified existing social determinants of health experienced by those in low socioeconomic areas.

Opposite evolution on voltage and thickness from paroxysmal to persistent AF

Background

There is a controversy about correlation between voltage and thickness in the atrial myocardium and their evolution from paroxysmal to persistent atrial fibrillation (AF).

Purpose

This is an observational study to compare voltage and thickness of different areas on the left atrium in paroxysmal and persistent atrial fibrillation.

Methods

Twenty-one patients underwent atrial fibrillation ablation. Points with electrical information from an electroanatiomical map in sinus rhythym were acquiered during the ablation procedure covering the whole atrial surface. CT was acquired in all patients before the procedure and endo- and epicardium from the atrium was segmented for the atrial thickness calculation. All the points from the electromecanical map were projected on the thickness map to have both information on the same location. 3D atrium was segmented in 5 areas for the analysis: Lateral, Anterior, Septal, Inferior-Posterior and Superior-Posterior (Figure 1). Voltage and thickness values among different areas and between AF type were compared.

Results

11 paroxysmal and 10 persistent AF patients were analyzed acquiring 452±207 points per patient and 1897±750 points per area. There was no linear correlation between voltage and thickness comparing all the patients nor among different areas nor between AF type (R&lt;0.2 in all cases).

Regarding paroxysmal AF patients, septum showed significatly lower voltage compared with the other segments, posterior, lateral, anterior and roof (1.3±1.4, 2±1.8, 2±1.6, 1.7±1.5, 2±1.6, P&lt;0.001). Posterior segment showed the highest voltage. The thickness analysis showed the septum segment as thinner segment and lateral as thicker segment (1.3±1.5,1.7±0.8, P&lt;0.001) (Figure 2).

Regarding persisten AF patients: septum showed significatly lower voltage compared with the other segments, posterior, lateral, anterior and roof who shows higher voltage (1±0.8*, 1.5±1.2, 1.9±1.7, 1.5±1.4, 2±1.6) (Figure 2). The thickness analysis showed the anterior segment as thinner segment and lateral as the thickest segment (1.6±0.8, 1.9±0.9 (P&lt;0.001), different like on paroxysmal AF population.

Comparing voltage and thicknes between paroxysmal and persistent AF, all the segments on persistent population showed lower voltage values, with significant differences on septal, posterior and anterior walls (1±0.8 vs 1.3±1.4, 1.5±1.2 vs 2±1.8, 1.5±1.4 vs 1.7±1.5, P&lt;0.001). On the other hand, all segments on persistent population showed statisticaly signignificant thicker myocardium in camparison with paroxysmal population (Figure 2).

Conclusions

According to our findings, there is no linear correlation between voltage and thickness. Persistent AF atria show thicker walls but with lower voltages in comparison with paroxysmal AF atria.

Funding Acknowledgement

Type of funding sources: None.

Disparities and implicit bias in the management of low-risk febrile infants: a mixed methods study protocol

INTRODUCTION

The management of low-risk febrile infants presents a model population for exploring how implicit racial bias promotes inequitable emergency care for children who belong to racial, ethnic and language minority groups. Although widely used clinical standards guide the clinical care of febrile infants, there remains substantial variability in management strategies. Deviations from recommended care may be informed by the physician's assessment of the family's values, risk tolerance and access to supportive resources. However, in the fast-paced emergency setting, such assessments may be influenced by implicit racial bias. Despite significant research to inform the clinical care of febrile infants, there is a dearth of knowledge regarding health disparities and clinical guideline implementation. The proposed mixed methods approach will (1) quantify the extent of disparities by race, ethnicity and language proficiency and (2) explore the role of implicit bias in physician-patient communication when caring for this population.

METHODS AND ANALYSIS

With 42 participating sites from the Pediatric Emergency Medicine Collaborative Research Committee, we will conduct a multicenter, cross-sectional study of low-risk febrile infants treated in the emergency department (ED) and apply multivariable logistic regression to assess the association between (1) race and ethnicity and (2) limited English proficiency with the primary outcome, discharge to home without lumbar puncture or antibiotics. We will concurrently perform an interpretive study using purposive sampling to conduct individual semistructured interviews with (1) minority parents of febrile infants and (2) paediatric ED physicians. We will triangulate or compare perspectives to better elucidate disparities and bias in communication and medical decision-making.

ETHICS AND DISSEMINATION

This study has been approved by the University of Florida Institutional Review Board. All participating sites in the multicenter analysis will obtain local institutional review board approval. The results of this study will be presented at academic conferences and in peer-reviewed publications.

Discontinuity in Equilibrium Wave-Current Ripple Size and Shape and Deep Cleaning Associated With Cohesive Sand-Clay Beds

Mixtures of cohesive clay and noncohesive sand are widespread in many aquatic environments. Ripple dynamics in sand-clay mixtures have been studied under current-alone and wave-alone conditions but not combined wave-current conditions, despite their prevalence in estuaries and the coastal zone. The present flume experiments examine the effect of initial clay content, C ₀, on ripples by considering a single wave-current condition and, for the first time, quantify how changing clay content of substrate impacts ripple dimensions during development. The results show inverse relationships between C ₀ and ripple growth rates and clay winnowing transport rates out of the bed, which reduce as the ripples develop toward equilibrium. For C ₀ ≤ 10.6%, higher winnowing rates lead to clay loss, and thus the presence of clean sand, far below the base of equilibrium ripples. This hitherto unquantified "deep-cleaning" of clay does not occur for C ₀ > 10.6%, where clay-loss rates are much lower. The clay-loss behavior is associated with two distinct types of equilibrium combined flow ripples: (a) Large asymmetric ripples with dimensions and plan geometries comparable to their clean-sand counterparts for C ₀ ≤ 10.6% and (b) small, flat ripples for C ₀ > 10.6%. The 10.6% threshold, which may be specific to the experimental conditions, corresponds to a more general 8% threshold found beneath the ripple base, suggesting that clay content here must be <8% for clean-sand-like ripples to develop in sand-clay beds. This ripple-type discontinuity comprises a threefold reduction in ripple height, with notable implications for bed roughness.

Developing adaptive performance: A conceptual model to guide simulation-based training design

Objectives

Effective emergency department care requires individuals and teams to adapt to changes in patient condition, team factors, environmental issues, and system-level challenges. Adaptability is often listed as an important skill for emergency medicine physicians; however, conceptual models describing the processes involved in adaptive performance have not been translated for health care settings. Similarly, educators have not described training design strategies that support the development of adaptive performance.

Methods

We examined the team science and health care literatures for key concepts in adaptive performance, health care team performance, and diagnostic decision-making. Using expert consensus, we integrated these concepts to develop the team adaptive performance model and to identify training design approaches that support the development of adaptability.

Results

We identify nine training principles supported by the team adaptive performance model and the adaptive learning system. Each training principle is accompanied by recommendations and mechanisms for implementation in emergency medicine simulation-based education.

Conclusion

Training experiences can be designed to target processes that support adaptive performance.

Breaking through barriers: the need for effective research to promote language-concordant communication as a facilitator of equitable emergency care

Individuals with limited English proficiency (LEP) are at high risk for adverse outcomes in the US health care system. This is particularly true for patients with LEP seeking care in the emergency department (ED). Although professional language interpretation improves the quality of care for these patients, it remains underused. The dynamic, discontinuous nature of an ED visit poses distinct challenges and opportunities for providing equitable, high-quality care for patients with LEP. Evidence-based best practices for identifying patients with LEP and using professional interpretation are well described but inadequately implemented. There are few examples in the literature of rigorous interventions to improve quality of care and outcomes for patients with LEP. There is an urgent need for high-quality research to improve communication with patients with LEP along the continuum of emergency care in order to achieve equity in outcomes.

Social determinants of health during the COVID-19 pandemic: a systematic review

Introduction

The emergence of COVID-19 has created global transmission. While effective at reducing the spread, public health measures implemented may impact individuals differently leaving them susceptible to the detrimental effects on their health and wellbeing. Therefore this review aims to synthesise the best available evidence on the relationship between the social determinants of health and health outcomes among adults during the COVID-19 pandemic.

Methods

A three-step search strategy was used to find both published and unpublished papers. The databases searched included: MEDLINE, CINAHL, EMBASE, and Google Scholar. Following the search, all identified citations were uploaded into Endnote X9, with duplicates removed. Methodological quality of eligible papers was assessed independently by two reviewers, with meta-synthesis conducted in accordance with JBI methodology.

Results

Fifteen papers were included. Three synthesized conclusions were established a) Vulnerable populations groups, particularly those from a racial minority and those with low incomes, are more susceptible and have been disproportionately affected by COVID-19 including mortality; b) Gender inequalities and family violence have been exacerbated by COVID-19, leading to diminished wellbeing among women; and c) COVID-19 is exacerbating existing social determinants of health through loss of employment/income, disparities in social class leading to lack of access to healthcare, housing instability, homelessness and difficulties in social distancing.

Conclusions

Vulnerable population groups have been disproportionately impacted by COVID-19, including health outcomes such as hospitalisations and mortality. The COVID-19 pandemic has highlighted the need for action on health inequalities and the social determinants of health. Reflection on social and health policies implemented are necessary to ensure that the COVID-19 pandemic does not exacerbate health inequalities into the future.

Key messages

Vulnerable populations including racial minority groups and low income earners have been disproportionately impacted by COVID-19.

Action on social determinants of health is required to ensure COVID-19 does not exacerbate health inequalities into the future.

Life during a pandemic in Australia: wellbeing and social determinants of health

Background

The COVID-19 pandemic has had effects on populations worldwide. The social determinants of health affect an individual's capacity to cope during a crisis which could potentially impact on their wellbeing. The aim of this study was to examine the relationship between wellbeing and the social determinants of health among Australian adults during the COVID-19 pandemic.

Methods

A cross-sectional study of adults residing in Australia was conducted using SurveyMonkey (an online survey) between August - October 2020. Participants were recruited via social media. Wellbeing was measured using the 10-item Multicultural Quality of Life Index and social determinants of health were measured using validated tools and investigator developed questions. Data were analysed using SPSS version 25. Inferential statistics, including independent t-test and one-way ANOVA were undertaken. Multiple regression analysis was used to investigate the predictors of wellbeing.

Results

In total, 1211 responses were received. Females accounted for 80.7% of the responses, men 16.7% and transgender/non-binary 2.6%. The mean age of the respondents was 43 years (SD 14.5). The mean score for total wellbeing was 62.58 (SD 21.22). Housing insecurity (p = 0.000), food insecurity (p = 0.000, social support (p = 0.000) and access to health care (p = 0.000) were all predictors of poor total wellbeing. Being a male (p = .0380) was the only predictor of higher wellbeing.

Conclusions

This study demonstrates that adults in Australia who had poor social support, had difficultly accessing health care, had insecure housing and food insecurity had significantly poorer wellbeing during the COVID-19 pandemic. This study exposes the social determinants of health that are responsible for health and social inequalities. It shows that the COVID-19 pandemic has exacerbated the social vulnerabilities and highlights the need take action on the social determinants of health and inequalities.

Key messages

The COVID-19 pandemic has further exposed the longstanding health and social inequalities that exist in Australia.

Action on social determinants of health is required in a post COVID-19 world to rebuild social protection and safeguard populations from any future public health emergencies.

Vector Competence of Peruvian Mosquitoes for Two Orthobunyaviruses Isolated From Mosquitoes Captured in Peru

We evaluated the potential for mosquitoes collected in the Amazon Basin, near Iquitos, Peru, to become infected with and transmit Murutucu (MURV) and Itaqui viruses (ITQV) (Order Bunyavirales, Family: Peribunyaviridae, Genus: Orthobunyavirus). Viremia levels in Syrian hamsters peaked 2 d after infection with either virus, and both viruses were highly lethal in hamsters with virtually all hamsters dying prior to 3-d postinfection. For almost all of the mosquito species tested some individuals were susceptible to infection and some developed a disseminated infection after oral exposure to either MURV or ITQV. However, only the Culex species (Culex (Culex) coronator Dyar and Knab [Diptera, Culicidae], Culex (Melanoconian) gnomatos Sallum, Huchings, and Ferreira [Diptera, Culicidae], Culex (Mel.) pedroi Sirivanakarn and Belkin [Diptera, Culicidae], and Culex (Mel.) vomerifer Komp [Diptera, Culicidae]) successfully transmitted virus by bite. However, even among these species, only about 37% of the individuals with a disseminated infection successfully transmitted these viruses, indicating a significant salivary gland barrier. Although little is known about the medical or veterinary importance of many members of the genus Orthobunyavirus, we have demonstrated that Culex spp. (Diptera, Culicidae) could be potential vectors.

The calcium sensing receptor modulates H+-ATPase activity in intercalated cells

Previous studies found that calcium sensing receptor (CaSR) it's expressed in intercalated cells of the collecting duct and that its activation by calcium in the luminal membrane promotes acidification of urine. Therefore, the aim of the study was to analyze the effects of CaSR stimulus on the biochemical activity of the vacuolar H⁺-ATPase in a cellular model of intercalated cells, MDCK-C11 cells. Biochemical activity of H⁺-ATPase was performed using cell homogenates and the inorganic phosphate released was determined by a colorimetric method. Changes in cytosolic ionized calcium ([Ca²⁺]_i) were also determined using Fluo-4. A significant increase of vacuolar H⁺-ATPase activity was observed when the CaSR was stimulated with agonists such as Gd³⁺ (300 μM), neomycin (200 μM) and by the calcimimetic R-568 (1 μM). This activity was also stimulated in a dose-dependent fashion by changes in extracellular Ca²⁺ concentration ([Ca²⁺]_o) between 10^-2 and 2 mM. The calciolytic NPS 2143 (150 nM) significantly reduced the vacuolar H⁺-ATPase activity observed with 2 mM [Ca²⁺]_o. Inhibition of phospholipase C (PLC) activity with U73122 (5 x 10^-7 M) reversed the increase in pump activity observed in the presence of Gd³⁺. Activation of CaSR by the specific CaSR agonist R-568 produced a sustained rise of [Ca²⁺]_i, an effect that disappears when extracellular calcium was removed in the presence of thapsigargin. In summary, CaSR stimulation induces an increase in the vacuolar H⁺-ATPase activity of MDCK-C11 cells, an effect that involves an increase in [Ca²⁺]_i and require PLC activity. The consequent decrease in intratubular pH could lead to increase ionization of luminal calcium, potentially reducing the formation of calcium phosphate stones.

Hemodynamic forces and myocardial deformation using cine MRI in Marfan syndrome

Funding Acknowledgements

Type of funding sources: None.

Introduction. Cardiovascular assessment of Marfan syndrome (MS) patients has normally focused on the aortic root and vascular manifestations due to the high risk of aortic dissection.

Although primary myocardial impairment has long been suspected, the evidence has been controversial. Advanced in CMR may support the early detection of cardiac dysfunction. Beyond left ventricle ejection fraction (EF) and myocardial strain (S), a new parameter is emerging, the hemodynamic forces (HF) exchanged between the blood flowing in the heart and the myocardium.  The application of these techniques to MS could be useful in demonstrating the presence of primary myocardial impairment.

Aim. The aim of this study is to explore myocardial function in MS through the evaluation in cine CMR of EF, S and cardiac HF exchanged between the blood and the myocardium and compare these data with those of a control group (C).

Methods. We retrospectively analysed CMR cine images of MS (diagnosed according revised Ghent criteria) without valvular disease or previous cardio surgery, and C, in standard long-axis projections, to define endocardial borders for subsequent quantification of left ventricular volumes, EF, longitudinal, circumferential and radial S, apex-to-base and lateral-to-septum HF (expressed in mN and as a percentage of gravity acceleration). The analysis were performed on Medical Imaging Systems (QStrain version 1.3.0.79; MEDIS) (Figure 1).

Results. 108 MS and 44 C had a good quality study, suitable for MEDIS analysis. The mean age was 33 ± 13 ys in MS, 35 ± 12 ys in C; 39% were male in MS, 50% in C.

The results of left ventricular function were: EF 63 ± 7% in MS vs 66 ± 5% in C group, p .008, global longitudinal S -24.5 ± 4.1% in MS vs -26.2 ± 4.1 in C, p .014; global circumferential S -30.6 ± 6.3% in MS vs -33.8 ± 4.4 in C, p .002; radial S 64.5 ± 16.2% in MS vs 72.7 ± 15.9 in C, p .005; apex-to-base HF 13.2 ± 4.7% in MS vs 17.8 ± 7.6% in C, p .000; lateral-to-septum 2.6 ± 1.3% in MS vs 3.1 ± 1.4% in C, p .048.

Moreover, 4.6% MS patients had mid reduced EF (40-50%); 9.2% had global longitudinal S reduction (cut off -19.3%); 7.4% had global circumferential S reduction (cut-off -21.7%).

Conclusion. These data provide support for the existence of a cardiomyopathy in MS. In our opinion, the term "primary cardiomyopathy" is not appropriate to describe this condition: patients with MS have changes in aortic stiffness and probably in cardiac afterload. The HF data are the most interesting of this study, both in the validation of this new parameter and in early detection a cardiomyopathy in MS

Moreover, the reduction of global circumferential S, as wall as global longitudinal S, in MS patients may help provide new elements to characterize the MS cardiomyopathy: sure enough, in literature, circumferential strain abnormalities are related to afterload increase. HF analysis is really a new challenge of cardiac imaging, as sensitive markers of subtle systolic dysfunction.

Abstract Figure. Figue 1. Analisis exemple.

Does team leader gender matter? A Bayesian reconciliation of leadership and patient care during trauma resuscitations

OBJECTIVE

Team leadership facilitates teamwork and is important to patient care. It is unknown whether physician gender-based differences in team leadership exist. The objective of this study was to assess and compare team leadership and patient care in trauma resuscitations led by male and female physicians.

METHODS

We performed a secondary analysis of data from a larger randomized controlled trial using video recordings of emergency department trauma resuscitations at a Level 1 trauma center from April 2016 to December 2017. Subjects included emergency medicine and surgery residents functioning as trauma team leaders. Eligible resuscitations included adult patients meeting institutional trauma activation criteria. Two video-recorded observations for each participant were coded for team leadership quality and patient care by 2 sets of raters. Raters were balanced with regard to gender and were blinded to study hypotheses. We used Bayesian regression to determine whether our data supported gender-based advantages in team leadership.

RESULTS

A total of 60 participants and 120 video recorded observations were included. The modal relationship between gender and team leadership (β = 0.94, 95% highest density interval [HDI], -.68 to 2.52) and gender and patient care (β = 2.42, 95% HDI, -2.03 to 6.78) revealed a weak positive effect for female leaders on both outcomes. Gender-based advantages to team leadership and clinical care were not conclusively supported or refuted, with the exception of rejecting a strong male advantage to team leadership.

CONCLUSIONS

We prospectively measured team leadership and clinical care during patient care. Our findings do not support differences in trauma resuscitation team leadership or clinical care based on the gender of the team leader.

IMPACT survey: IMpaired fecundity in Physicians and Association with Clinical Time

OBJECTIVE

Studies suggest female physicians experience higher rates of infertility than the general population. The overall objective of this study was to determine the rate of impaired fecundity in a sample of female emergency physicians and compare it to the Centers for Disease Control and Prevention (CDC) National Survey of Family Growth (NSFG) data. Impaired fecundity is defined as physical difficulty in getting pregnant or carrying a pregnancy to live birth.

METHODS

We performed a cross-sectional survey of female emergency physicians to determine the rate of impaired fecundity. Survey questions were adapted from the NSFG to allow comparison to the general population. Statistical comparisons were made using contingency tables (with chi-square and tau-c assessments), 1-sample t tests, and independent samples t tests, as appropriate.

RESULTS

A total of 2072 women completed the survey with a mean (SD) current age of 38.9 (7.2) years. Data were analyzed for women of childbearing years (15-44 years old as defined by the CDC; n = 1705 [82% total responses]). The rate of impaired fecundity in emergency physicians was 24.9% as compared to the NSFG cohort (12.1%; P < 0.001). Female emergency physicians with impaired fecundity reported working 9.8 overall more clinical hours (95% CI 2.5-17) and 4.5 more night hours (95% CI 0.8-8.2) than those with normal fecundity.

CONCLUSION

Female emergency physicians have increased rates of impaired fecundity when compared with a general population cohort. Clinical workload and night shifts are greater in female emergency physicians with impaired fecundity. Research is needed to elucidate work-related impaired fecundity risk factors.

Perceptions of Indigenous Australians towards cardiovascular primary prevention programs

Background

Indigenous Australians have disproportionately poorer health outcomes than their non-Indigenous counterparts. Preventable chronic diseases, such as cardiovascular disease, are primary factors that contribute to their lower life expectancy. Health risk behaviors such as smoking, physical inactivity, poor nutrition and obesity largely contribute to the enduring health divide. Therefore, the aim of this qualitative review was to synthesize the best available evidence on the perceptions of Indigenous Australians towards cardiovascular primary prevention programs.

Methods

A search using MEDLINE, CINAHL, EMBASE, Google Scholar, MedNar, ProQuest and Index to Theses for published and unpublished studies was conducted in January 2020. The methodological quality of the included studies was assessed by two reviewers using the Joanna Briggs Institute (JBI) critical appraisal tool. Meta-aggregation was conducted in accordance with JBI methodology.

Results

Eleven studies involving 249 participants were included. Three synthesized findings were developed 1) External factors can affect participants' experiences of prevention programs. Support from family motivates participation and behavioral change. Support from health professionals that is free from judgment facilitates participation; 2) The complexities of an individual's life influence Indigenous Australian's experiences and participation in prevention programs and health risk behavioral change; 3) A personal desire to change behaviors and participate in prevention programs requires development of knowledge on healthy lifestyles, creation of new social norms and overcoming internal struggles.

Conclusions

Indigenous Australians participation in primary prevention for cardiovascular risk factors and adoption of a healthy lifestyle are influenced by social support, social determinants and personal desire. Future programs need to tackle structural drivers and create a supportive environment to assist in behavior change.

Key messages

Social determinants affect Indigenous Australians experiences and participation in prevention programs for behaviour change. Prevention programs must create a supportive environment with the inclusion of family.

Quantitative and Qualitative Assessments of Cholesterol Association With Bacterial Infection Type in Sepsis and Septic Shock

BACKGROUND

Reduced cholesterol levels are associated with increased organ failure and mortality in sepsis. Cholesterol levels may vary by infection type (gram negative vs positive), possibly reflecting differences in cholesterol-mediated bacterial clearance.

METHODS

This was a secondary analysis of a combined data set of 2 prospective cohort studies of adult patients meeting Sepsis-3 criteria. Infection types were classified as gram negative, gram positive, or culture negative. We investigated quantitative (levels) and qualitative (dysfunctional high-density lipoprotein [HDL]) cholesterol differences. We used multivariable logistic regression to control for disease severity.

RESULTS

Among 171 patients with sepsis, infections were gram negative in 67, gram positive in 46, and culture negative in 47. Both gram-negative and gram-positive infections occurred in 11 patients. Total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and HDL cholesterol (HDL-C) levels were lower for culture-positive sepsis at enrollment (TC, P < .001; LDL-C, P < .001; HDL-C, P = .011) and persisted after controlling for disease severity. Similarly, cholesterol levels were lower among culture-positive patients at 48 hours (TC, P = .012; LDL-C, P = .029; HDL-C, P = .002). Triglyceride (TG) levels were lower at enrollment (P =.033) but not at 48 hours (P = .212). There were no differences in dysfunctional HDL. Among bacteremic patients, cholesterol levels were lower at enrollment (TC, P = .010; LDL-C, P = .010; HDL-C, P ≤ .001; TG, P = .005) and at 48 hours (LDL-C, P = .027; HDL-C, P < .001; TG, P = .020), except for 48 hour TC (P = .051). In the bacteremia subgroup, enrollment TC and LDL-C were lower for gram-negative versus gram-positive infections (TC, P = .039; LDL-C, P = .023).

CONCLUSION

Cholesterol levels are significantly lower among patients with culture-positive sepsis and bacteremia.

Time to vasopressor initiation and organ failure progression in early septic shock

OBJECTIVE

Research evaluating the relationship between vasopressor initiation timing and clinical outcomes is limited and conflicting. We investigated the association between time to vasopressors, worsening organ failure, and mortality in patients with septic shock.

METHODS

This was a retrospective study of patients with septic shock (2013-2016) within 24 hours of emergency department (ED) presentation. The primary outcome was worsening organ failure, defined as an increase in Sequential Organ Failure Assessment (SOFA) score ≥2 at 48 hours compared to baseline, or death within 48 hours. The secondary outcome was 28-day mortality. Time to vasopressor initiation was categorized into 6, 4-hour intervals from time of ED triage. Multiple logistic regression was used to identify predictors of worsening organ failure.

RESULTS

We analyzed data from 428 patients with septic shock. There were 152 patients with the composite primary outcome (SOFA increase ≥2 or death at 48 hours). Of these, 77 patients died in the first 48 hours and 75 patients had a SOFA increase ≥2. Compared to the patients who received vasopressors in the first 4 hours, those with the longest time to vasopressors (20-24 hours) had increased odds of developing worsening organ failure (odds ratios [OR] = 4.34, 95% confidence intervals [CI] = 1.47-12.79, P = 0.008). For all others, the association between vasopressor timing and worsening organ failure was non-significant. There was no association between time to vasopressor initiation and 28-day mortality.

CONCLUSIONS

Increased time to vasopressor initiation is an independent predictor of worsening organ failure for patients with vasopressor initiation delays >20 hours.

An Event-based Approach to Measurement: Facilitating Observational Measurement in Highly Variable Clinical Settings

BACKGROUND

Translational research in medical education requires the ability to rigorously measure learner performance in actual clinical settings; however, current measurement systems cannot accommodate the variability inherent in many patient care  environments. This is especially problematic in emergency medicine, where patients represent a wide spectrum of severity for a single clinical presentation. Our objective is to describe and implement EBAM, an event-based approach to measurement that can be applied to actual emergency medicine clinical events.

METHODS

We used a four-step event-based approach to create an emergency department trauma resuscitation patient care measure. We applied the measure to a database of 360 actual trauma resuscitations recorded in a Level I trauma center using trained raters. A subset (n = 50) of videos was independently rated in duplicate to determine inter-rater reliability. Descriptive analyses were performed to describe characteristics of resuscitation events and Cohen's kappa was used to calculate reliability.

RESULTS

The methodology created a metric containing both universal items that are applied to all trauma resuscitation events and conditional items that only apply in certain situations. For clinical trauma events, injury severity scores ranged from 1 to 75 with a mean (±SD) of 21 (±15) and included both blunt (254/360; 74%) and penetrating (86/360; 25%) traumatic injuries, demonstrating the diverse nature of the clinical encounters. The mean (±SD) Cohen's kappa for patient care items was 0.7 (±0.3).

CONCLUSION

We present an event-based approach to performance assessment that may address a major gap in translational education research. Our work centered on assessment of patient care behaviors during trauma resuscitation. More work is needed to evaluate this approach across a diverse array of clinical events.

Perceived and anticipating stigma in schizophrenia in relationship with depressive symptoms and functionality degree

Introduction

Perceived and anticipated stigma is relevant issues in patients with schizophrenia. Stigma has negative consequences both in quality of life and in the course of illness.

Objectives

To analyze the degree of perceived and anticipated stigma and discrimination in patients with schizophrenia and their relationship with clinical and socio-demographic variables.

Methods

A cross-sectional study was carried out in a sample of 100 patients with diagnosis of schizophrenia, 18 or more years old, clinically stabilized, without axis I DSM-IV comorbidity. Patients received treatment in the outpatient services of a catchment area in Madrid. Perceived and anticipated discrimination was evaluated trough the DISC-12 (Discrimination and Stigma scale). Other study variables were: socio-demographic characteristics, symptoms of depression (Calgary Scale) and functionality degree measured by Global Assessment of Function (GAF).

Results

The presence of symptoms of depression evaluated by the Calgary Scale and low degree of functionality measured by GAF are associated with greater feelings of discrimination and stigma, especially in the sub-scales of experienced and anticipated discrimination of the DISC 12. Anticipated stigma is higher in men than in women while the rest sub scales of the DISC-12 do not correlate with gender or other sociodemographic variables.

Conclusions

Preventive strategies to avoid the stigma in schizophrenia should consider some characteristics associated with disease, especially the degree of functionality and presence of depressive symptoms.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

P4421Increased circulating levels of VCAM-1 correlate with left atrial remodeling in highly trained athletes

Introduction

Reports have shown increased risk of atrial fibrillation (AF) in athletes. Vascular cell adhesion molecule-1 (VCAM1) is associated with new onset AF in general population. VCAM1 and its relation with left atrial (LA) remodeling have not been investigated in athletes.

Purpose

To study VCAM1 and LA remodeling in marathon runners.

Methods

Study of 36 male marathon runners in the training period previous to race (42 km) and 18 sedentary controls with no risk factors. Athletes were divided in two groups according to highest training intensity reached (group 1, >100 km/week; group 2, 50–100 km/week). Previous to race in all subjects, VCAM1 serum levels were measured by ELISA and an echocardiogram was performed. In athletes, VCAM1 was measured immediately post-race. Wilcoxon and Spearman were used.

Results

See table. Group 1 showed a significant increment in VCAM1 post-race (651±350 to 905±373 ng/mL; p=0.002) as compared to group 2 with no increment (533±133 to 651±138 ng/mL; p=0.117). In athletes, a moderate correlation between LA volume and VCAM1 was found (rho: 0.483; p=0.007).

Baseline characteristics Group 1 (n=18) Group 2 (n=18) Controls (n=18) p value Age (years) 37±6 38±5 36±4 0.373 Heart rate (bpm) 53±8 57±7 69±6 * 0.001 Body surface area (m2) 1.8±0.1 1.8±0.1 1.9±0.1 0.075 LV diastolic diameter (mm) 49±5 48±5 46±4 0.404 LV systolic diameter (mm) 29±5 30±5 30±4 0.879 Septal wall (mm) 9.1±1.2† 8.2±1.1 8.1±0.8 0.005 Posterior wall (mm) 9.3±2.1† 8.5±1.2 7.6±0.8 0.001 Ejection fraction (%) 55±3 55±6 57±4 0.110 LV mass index (g/m2) 106±27† 78±18 58±11 0.001 LA volume (mL/m2) 42±8† 30±11 25±9 0.001 E wave (cm/sec) 78±13 84±12 77±15 0.217 A wave (cm/sec) 50±12 53±10 48±16 0.438 DT (msec) 233±65 229±65 221±66 0.184 VCAM1 (ng/mL) 651±350† 533±133 440±98 0.022 Mean ± SD. *p<0.05 vs group 1 and 2 post Kruskall-Wallis; †p<0.05 vs other groups post Kruskall-Wallis. LV, left ventricle; LA, left atrium; DT, deceleration time.

Conclusions

Most trained athletes had increased levels of VCAM1 as compared to controls and less trained athletes. They also showed an increment post-effort. VCAM1 is related to LA remodeling in athletes. VCAM1 could be a potential biomarker of AF in athletes which should be confirmed.

Acknowledgement/Funding

FONDECYT 1170963 (LG); FONDAP 15130011 (LG,SL)

Identification of processes that mediate the impact of workplace violence on emergency department healthcare workers in the USA: results from a qualitative study

OBJECTIVES

Violence towards emergency department healthcare workers is pervasive and directly linked to provider wellness, productivity and job satisfaction. This qualitative study aimed to identify the cognitive and behavioural processes impacted by workplace violence to further understand why workplace violence has a variable impact on individual healthcare workers.

DESIGN

Qualitative interview study using a phenomenological approach to initial content analysis and secondary thematic analysis.

SETTING

Three different emergency departments.

PARTICIPANTS

We recruited 23 emergency department healthcare workers who experienced a workplace violence event to participate in an interview conducted within 24 hours of the event. Participants included nurses (n=9; 39%), medical assistants (n=5; 22%), security guards (n=5; 22%), attending physicians (n=2; 9%), advanced practitioners (n=1; 4%) and social workers (n=1; 4%).

RESULTS

Five themes emerged from the data. The first two supported existing reports that workplace violence in healthcare is pervasive and contributes to burn-out in healthcare. Three novel themes emerged from the data related to the objectives of this study: (1) variability in primary cognitive appraisals of workplace violence, (2) variability in secondary cognitive appraisals of workplace violence and (3) reported use of both avoidant and approach coping mechanisms.

CONCLUSION

Healthcare workers identified workplace violence as pervasive. Variability in reported cognitive appraisal and coping strategies may partially explain why workplace violence negatively impacts some healthcare workers more than others. These cognitive and behavioural processes could serve as targets for decreasing the negative effect of workplace violence, thereby improving healthcare worker well-being. Further research is needed to develop interventions that mitigate the negative impact of workplace violence.

Targeted Simulation-based Leadership Training for Trauma Team Leaders

Introduction

Effective team leadership is linked to better teamwork, which in turn is believed to improve patient care. Simulation-based training provides a mechanism to develop effective leadership behaviors. Traditionally, healthcare curricula have included leadership as a small component of broader teamwork training, with very few examples of leadership-focused curricula. The objective of this work is to describe a novel simulation-based team leadership curriculum that easily adapts to individual learners.

Methods

We created a simulation-based team leadership training for trauma team leaders in graduate medical education. Participants included second- and third-year emergency medicine and surgery residents. Training consisted of a single, four-hour session and included facilitated discussion of trauma leadership skills, a brief didactic session integrating leadership behaviors into Advanced Trauma Life Support®, and a series of simulations and debriefing sessions. The simulations contained adaptable components that facilitated individualized learning while delivering set curricular content. A survey evaluation was administered 7–24 months following the training to assess self-reported implementation of trained material.

Results

A total of 36 residents participated in the training and 23 (64%) responded to the survey. The majority of respondents (n = 22, 96%) felt the training was a valuable component of their residency education and all respondents reported ongoing use of at least one behavior learned during the training. The most commonly cited skills for ongoing use included the pre-arrival brief (n = 21, 91%) and prioritization (n = 21, 91%).

Conclusion

We delivered a leadership-focused, simulation-based training that 1) adapted to learners’ individual needs, and 2) was perceived to impact practice up to 24 months post-training. More work is needed to understand the impact of this training on learner knowledge and behavior, as well as patient outcomes.

Development and Empirical Testing of a Novel Team Leadership Assessment Measure: A Pilot Study Using Simulated and Live Patient Encounters

BACKGROUND

Team leadership is critical to health care resuscitation team performance. There has been increased focus on competency in team leadership behaviors; however, there is still variability in how team leadership is assessed within emergency medicine. The objective of this study was to develop and pilot a novel team leadership assessment measure for emergency medicine resuscitation teams.

METHODS

Team leadership dimensions and associated behaviors were identified through a systematic literature review and expert consensus. Included behaviors were used to create behaviorally anchored rating scales, which were then revised based on subject matter expert ratings. Four raters from three different academic institutions observed 30 video-recorded resuscitations (20 simulated and 10 actual patient care resuscitations). Mean leadership scores were calculated. Intraclass coefficients (ICCs) were calculated for each item and for overall leadership scores. Leader scores for the simulation-based scenarios were compared to external variables including level of training, team process, clinical performance, and team situational awareness. The study was conducted from July 2017 through June 2018.

RESULTS

Leadership scores ranged from 2.23 to 4.30 (mean [±SD] = 3.18 [±0.50]). The ICC for the overall score was 0.79 for all observations, 0.87 for simulation-based observations, and 0.24 for the patient care observations. Team leadership scores on simulation-based observations did not correlate with available external variables.

CONCLUSIONS

We developed a novel team leadership assessment measure for emergency medicine resuscitation teams with supporting validity evidence, including content validity and response process. The measure demonstrated acceptable inter-rater reliability when applied to simulation-based medical resuscitations; however, this did not translate to trauma resuscitations in the actual patient care setting.

Active cushing syndrome patients have increased ectopic fat deposition and bone marrow fat content compared to cured patients and healthy subjects: a pilot 1H-MRS study

OBJECTIVE

Glucocorticoid excess is one of the most important causes of bone disorders. Bone marrow fat (BMF) has been identified as a l new mediator of bone metabolism. Cushing syndrome (CS), is a main regulator of adipose tissue distribution but its impact on BMF is unknown. The objective of the study was to evaluate the effect of chronic hypercortisolism on BMF.

DESIGN

This was a cross-sectional study. Seventeen active and seventeen cured ACTH-dependent CS patients along with seventeen controls (matched with the active group for age and sex) were included.

METHODS

the BMF content of the femoral neck and L3 vertebrae were measured by 1H-MRS on a 3-Tesla wide-bore magnet. BMD was evaluated in patients using dual-energy X-ray absorptiometry.

RESULTS

Active CS patients had higher BMF content both in the femur (82.5±2.6%) and vertebrae (70.1±5.1%) compared to the controls (70.8±3.6%, p=0.013 and 49.0±3.7% p=0.005, respectively). In cured CS patients (average remission time of 43 months), BMF content was not different from controls at both sites (72.3±2.9% (femur) and 46.7%±5.3% (L3)). BMF content was positively correlated with age, fasting plasma glucose, HbA1c, triglycerides and visceral adipose tissue in the whole cohort and negatively correlated with BMD values in the CS patients .

CONCLUSIONS

Accumulation of BMF is induced by hypercortisolism. In remission patients BMF reached values of controls. Further studies are needed to determine whether this increase in marrow adiposity in CS is associated with bone loss.

The aminoglycoside antibiotic gentamicin is able to alter metabolic activity and morphology of MDCK-C11 cells: a cell model of intercalated cells

It is well known that the aminoglycoside antibiotic gentamicin is capable of causing damage to kidney cells. Given the known involvement of Ca²⁺ in the nephrotoxic action of gentamicin, the purpose of this study was to establish a relationship between the concentration of intracellular Ca²⁺ ([Ca²⁺]_i) and cellular cytotoxicity using MDCK-C11 cells, a clone that has several properties that resemble those of intercalated cells of the distal nephron. Changes in [Ca²⁺]_i was determined using fluorescence microscopy. Cell viability was evaluated by the neutral red method, and cell cytotoxicity by the MTT method. The [Ca²⁺]_i gradually increased when cells were exposed to 0.1 mM gentamicin for 10, 20, and 30 min. The presence of extracellular Ca²⁺ was found to be necessary to stimulate the increase in [Ca²⁺]_i induced by gentamicin, since this stimulus disappeared by using 1.8 mM EGTA (a Ca²⁺ chelator). Morphological changes were observed with scanning electron microscopy in epithelial cells exposed to the antibiotic. Furthermore, with the MTT method, a decrease in metabolic activity induced by gentamicin was observed, which indicates a cytotoxic effect. In conclusion, gentamicin was able to alter [Ca²⁺]_i, change the morphology of MDCK-C11 cells, and promote cytotoxicity.