Variability in Interpretation of Echocardiographic Signs of Tamponade: A Survey of Emergency Physician Sonographers.

BACKGROUND: Cardiac tamponade is associated with high mortality, and making the diagnosis is a core skill of emergency physicians. Proper diagnosis relies on specific clinical and echocardiographic findings. It is not known whether expert sonographers consistently recognize echocardiographic signs of tamponade. OBJECTIVES: To assess whether expert sonographers agree on echocardiographic signs of tamponade. METHODS: A 20-question survey consisting of 18 cine loops and 2 still images was distributed to the Academy of Emergency Ultrasound Section of the Society for Academic Emergency Medicine. Respondents answered "yes" or "no" to whether there was echocardiographic evidence of tamponade. Subgroup analyses of demographics and echocardiographic views were reported. The data were analyzed using Krippendorff's alpha (α) to assess interrater reliability (IRR) between respondents. RESULTS: Eighty-four physicians responded and 56 completed the survey. All partial and completed surveys were analyzed. The overall IRR was poor (α = 0.60, 95% confidence interval [CI] 0.44-0.76). Residency graduation within 5 years (α = 0.66, 95% CI 0.5-0.8) was associated with higher IRR compared with those > 5 years (α = 0.53, 95% CI 0.37-0.69). The highest IRR was observed when images of mitral valve inflow pulse-wave Doppler (α = 0.81, CI 0.70-0.92) were used and the poorest IRR was on images from the parasternal short view (α = 0.28, 95% CI 0.05-0.49). CONCLUSION: There was poor agreement among expert emergency medicine sonographers in identifying echocardiographic signs of cardiac tamponade from a single cine loop or clip without clinical context. Further investigation is warranted to understand differences in recognition of clinical tamponade.

ED point-of-care ultrasonography is associated with earlier drainage of pericardial effusion: A retrospective cohort study.

OBJECTIVES: To determine the association between emergency department point-of-care cardiac ultrasonography (POCUS) utilization and time to pericardial effusion drainage during an 8-year period when the emergency ultrasound program was established at our institution. METHODS: We performed a single-center retrospective cohort study in patients undergoing pericardiocentesis or other procedure for evacuation of pericardial effusion. Data was collected using both direct queries to the electronic health record database and two-examiner chart review. The primary outcome was time to intervention for pericardial effusion drainage. Multivariable Cox regression, with and without inverse probability weighting for likelihood to receive POCUS, was used to determine the association between POCUS and time to intervention. Secondary outcomes included 28-day mortality. RESULTS: 257 patient encounters were included with 137 receiving POCUS and 120 who did not. The proportion of patients receiving POCUS increased from 18.5% to 69.5% during the early to late periods of the study. POCUS was associated with an earlier median time to intervention of 21.6 h (95% CI 17.2, 24.2) compared to 34.6 h (27.0, 50.5) in the No POCUS group. After adjustment for patient demographics, anticoagulation, time of presentation and hemodynamic instability, POCUS was associated with earlier intervention (HR 2.08 [95% CI 1.56, 2.77]). POCUS use was not associated with a difference in 28-day mortality, which was evaluated as a secondary outcome. However, diagnosis of pericardial effusion by the ED physician using any means (POCUS or other imaging) was associated with decreased 28-day mortality (9.7% vs. 26.0%, -16.3% for POCUS [95% CI -29.1, -3.5]). CONCLUSION: POCUS was associated with an earlier time to intervention for pericardial effusions after adjustment for multiple confounding factors. Failure to diagnose pericardial effusion in the ED using any diagnostic testing including POCUS, was associated with increased 28-day mortality.

Association of a longitudinal, preclinical ultrasound curriculum with medical student performance.

INTRODUCTION: Point-of-care ultrasound (US) is used in clinical practice across many specialties. Ultrasound (US) curricula for medical students are increasingly common. Optimal timing, structure, and effect of ultrasound education during medical school remains poorly understood. This study aims to retrospectively determine the association between participation in a preclinical, longitudinal US curriculum and medical student academic performance. METHODS: All first-year medical students at a medical school in the Midwest region of the United States were offered a voluntary longitudinal US curriculum. Participants were selected by random lottery. The curriculum consisted of five three-hour hands on-sessions with matching asynchronous content covering anatomy and pathologic findings. Content was paired with organ system blocks in the standard first year curriculum at our medical school. Exam scores between the participating and non-participating students were compared to evaluate the objective impact of US education on performance in an existing curriculum. We hypothesized that there would be an association between participation in the curriculum and improved medical student performance. Secondary outcomes included shelf exam scores for the surgery, internal medicine, neurology clerkships and USMLE Step 1. A multivariable linear regression model was used to evaluate the association of US curriculum participation with student performance. Scores were adjusted for age, gender, MCAT percentile, and science or engineering degree. RESULTS: 76 of 178 students applied to participate in the curriculum, of which 51 were accepted. US curriculum students were compared to non-participating students (n = 127) from the same class. The US curriculum students performed better in cardiovascular anatomy (mean score 92.1 vs. 88.7, p = 0.048 after adjustment for multiple comparisons). There were no significant differences in cumulative cardiovascular exam scores, or in anatomy and cumulative exam scores for the gastroenterology and neurology blocks. The effect of US curriculum participation on cardiovascular anatomy scores was estimated to be an improvement of 3.48 points (95% CI 0.78-6.18). No significant differences were observed for USMLE Step 1 or clerkship shelf exams. There were no significant differences in either preclinical, clerkship or Step 1 score for the 25 students who applied and were not accepted and the 102 who did not apply. CONCLUSIONS: Participation in a preclinical longitudinal US curriculum was associated with improved exam performance in cardiovascular anatomy but not examination of other cardiovascular system concepts. Neither anatomy or comprehensive exam scores for neurology and gastrointestinal organ system blocks were improved.

Sepsis-Induced Cardiomyopathy Detected With Focused Cardiac Ultrasound in the Emergency Department.

BACKGROUND: Sepsis is a high mortality condition characterized by multi-organ dysfunction. Sepsis-induced cardiomyopathy (SIC) refers to cardiac dysfunction in sepsis. OBJECTIVES: Our goal was to determine whether SIC can be detected in the emergency department (ED) using focused cardiac ultrasound (FCU). METHODS: A retrospective analysis of adults presenting to a single ED with sepsis over a 21-month period was performed. Patients were included if they met clinical sepsis criteria, received an FCU by an emergency physician in the ED, and a baseline echocardiogram performed in the previous 12 months. SIC was defined as a significant decrease in estimated left ventricular ejection fraction (LVEF) by FCU relative to baseline. Demographic and outcome characteristics were compared between three cohorts: patients with normal baseline LVEF and no decrease on presentation, patients with decreased LVEF and no significant change, and those with a significant decrease in LVEF from their normal baseline (SIC). RESULTS: There were 110 patients that met inclusion criteria: 89 patients (81%) in the normal LVEF group, 12 (11%) in the prior decreased LVEF group, and 9 (8%) in the SIC group. Unadjusted mortality at 90 days for patients with SIC (67%) and prior decreased LVEF (58%) was significantly higher than those with normal EF (29%) (p = 0.019). When adjusted for age, gender, Charlson Index score, and lactate > 4.0 mmol/L, SIC was associated with mortality at 90 days (odds ratio 6.1, 95% confidence interval 1.37-32.92). CONCLUSION: SIC can be detected using FCU by emergency physicians in the ED and is associated with increased 90-day mortality.

Septic arthritis due to non-tuberculous mycobacterium without effusion.

Septic arthritis is an important but difficult to make diagnosis that leads to significant morbidity and mortality. Joint effusion is generally accepted to be a highly sensitive finding in septic arthritis; however, final diagnosis requires synovial fluid studies. Without a significant joint effusion, it is difficult to obtain synovial fluid. In this case report, we describe the presentation and diagnosis of septic arthritis in the first MTP due to mycobacterium chelonae in a 69 year old man with a history of gout and immunosuppression due to a heart transplant. There was notably no significant effusion in the joint on clinical examination or bedside ultrasound. As the patient was immunosuppressed, arthrocentesis was performed under ultrasound guidance. A needle was clearly visualized in the joint; however, minimal synovial fluid was obtained. The fluid grew Mycobacterium chelonae in culture. Subsequent joint washout revealed purulent synovial fluid that grew out the same bacteria. This case emphasizes the importance of obtaining synovial fluid to evaluate for septic arthritis, even when joint effusion is absent. Ultrasound guidance can facilitate this.

Euglycemic diabetic ketoacidosis associated with SGLT2i use: Case series.

INTRODUCTION: Euglycemic diabetic ketoacidosis (EuDKA) associated with Sodium-Glucose Cotransporter-2 inhibitor (SGLT2i) use has been described but remains poorly understood. Data on Emergency Department (ED) presentation, resource utilization, and safety outcomes for these patients are lacking. We report a case series of patients diagnosed with EuDKA in the ED. METHODS: An electronic medical record search identified adult patients presenting to a large tertiary ED with EuDKA. They were screened for concurrent use of SGLT2i. Clinical presentation, resource utilization, safety, and disposition data were collected and described. RESULTS: Five patients were included for analysis. Median age [range] was 57 [43-73] years. Presenting symptoms included nausea, vomiting, fatigue, and altered mental status. Initial results included: serum glucose 191 mg/dL [176-215], venous pH 7.01 [6.95-7.30], serum HCO3 8 mEq/L [6-13], anion gap 27 [26-31], serum beta-hydroxybutyrate 9.9 mmol/L [9.2-12.3], and urine ketones 150 [150-150]. Patients remained on an insulin infusion for 18.77 h [11.25-56.48]. There were zero episodes of hypoglycemia and one episode of hypokalemia while on insulin infusion. Time to resolution of metabolic acidosis was 23.82 h [15.45-24.77]. DISCUSSION: We report a case series of ED patients with EuDKA associated with SGLT2i use, and describe presentation characteristics, resource utilization, and safety outcomes. Emergency physicians should be aware of the association between SGLT2i use and EuDKA. An appropriate work-up should be pursued for patients taking an SGLT2i who present with symptoms suggestive of DKA, including nausea, vomiting, malaise, and altered mental status, or are noted to have an unexplained elevated anion gap metabolic acidosis.

Extended dwell and standard ultrasound guided peripheral intravenous catheters: Comparison of durability and reliability.

Background Vascular access is a critical component of emergency department (ED) care. Ultrasound guided placement of peripheral intravenous (USIV) catheters is increasingly common. However, USIV are thought to suffer from reduced durability and higher complication rates. Extended dwell catheters (EDC) are long peripheral IVs placed under combined ultrasound and wire guidance. The goal of this study is to compare dwell times and complication rates of EDC to standard peripheral USIV. Methods We performed a retrospective cohort study at a tertiary care adult ED comparing IV placements during a 17-month period (8/1/2018-12/31/2019), stratified by standard USIV versus EDC. The primary outcome was catheter dwell time and secondary outcomes included need for inpatient vascular access team (VAST) consultation, peripherally inserted central catheter (PICC) insertions, and radiocontrast extravasations. Multivariable Cox regression time-to-event analyses were used to evaluate dwell times, adjusting for age, gender, BMI and end-stage renal disease. Results 359 EDC and 4190 standard USIV were included for analysis. Most USIV (95.6%) and EDC (98.3%) were placed by ED technicians trained in ultrasound vascular access. EDC median dwell time (5.9 days [95%CI: 5.1-6.7]) exceeded standard USIV (3.8 days [95% CI: 3.6-4.0]). Patients with EDC placed in the ED required less VAST consultation (0.84 vs 0.99 charges/encounter), had similar rates of PICC line use (8.0% vs 8.4% of encounters) and had no radiocontrast extravasation events. Multivariable Cox regression demonstrated survival benefit (longer dwell time) favoring EDC (HR 0.70 [95%CI 0.60-0.81]). Conclusion Use of EDC results in longer dwell time and reduces subsequent use of vascular access resources, while maintaining low complication rates. EDC demonstrate superior durability which may justify their selection over standard USIV in some patients.

Undifferentiated Dyspnea with Point-of-Care Ultrasound, Primary Emergency Physician Compared with a Dedicated Emergency Department Ultrasound Team.

BACKGROUND: Emergency physicians (EPs) perform critical actions while operating with diagnostic uncertainty. Point-of-care ultrasound (POCUS) is useful in evaluation of dyspneic patients. In prior studies, POCUS is often performed by ultrasound (US) teams without patient care responsibilities. OBJECTIVES: This study evaluates the effectiveness of POCUS in narrowing diagnostic uncertainty in dyspneic patients when performed by treating EPs vs. separate US teams. METHODS: This multicenter, prospective noninferiority cohort study investigated the effect of a POCUS performing team in patient encounters for dyspnea. Before-and-after surveys assessing medical decision-making were administered to attending physicians. Primary outcome was change in most likely diagnosis after POCUS. This was assessed for noninferiority between encounters where the primary or US team performed POCUS. Secondary outcomes included change in differential diagnosis, confidence in diagnosis, interventions considered, and image quality. RESULTS: There were 156 patient encounters analyzed. In the primary team group, most likely diagnosis changed in 40% (95% confidence interval 28-52%) of encounters vs. 32% (95% confidence interval 22-41%) in the US team group. This was noninferior using an a priori specified margin of 20% (p < .0001). Post-POCUS differential decreased by a mean 1.8 diagnoses and was equivalent within a margin of 0.5 diagnoses between performing teams (p = 0.034). Other outcomes were similar between groups. CONCLUSION: POCUS performed by primary teams was noninferior to POCUS performed by US teams for changing the most likely diagnosis, and equivalent when considering mean reduction in number of diagnoses. POCUS performed by treating EPs reduces cognitive burden in dyspneic patients.

Myocarditis Following mRNA COVID-19 Vaccine.

ABSTRACT: A growing number of adolescents are being diagnosed with acute myocarditis following mRNA COVID-19 vaccinations. This case describes an adolescent who presented to the emergency department with chest pain and tachycardia following the Pfizer-BioNTech COVID-19 vaccination. Point-of-care ultrasound was performed prior to the return of laboratory studies and revealed depressed left ventricular systolic function. Point-of-care ultrasound may be a tool used to rapidly diagnose or risk stratify patients with potential post-COVID-19 vaccine myocarditis.

Sonogram of safety: Ultrasound outperforms the fifth intercostal space landmark for tube thoracostomy site selection.

PURPOSE: Identification of tube thoracostomy insertion location is currently performed using a blind, landmark based approach at either the fifth intercostal space (ICS) or inframammary crease in the midaxillary line. A significant percentage of thoracostomies at this site result in complications. This pilot study aimed to assess whether bedside ultrasound could aid in identifying safer tube thoracostomy insertion sites in emergency department patients. METHODS: Fifty emergency department patients were enrolled in this study. Right and left hemidiaphragms were evaluated with ultrasound at the fifth ICS. Observations were made on if the diaphragm was below, above, or crossed the fifth ICS during an entire respiratory cycle. RESULTS: Eighty-one (95% confidence interval 72-82) of the diaphragms were below, 13 (95% confidence interval 8-21) of the diaphragms were at, and 6 (95% confidence interval 3-12) of the diaphragms were above the location marked using traditional landmark techniques. On the right and left hemidiaphragms, 20% (95% confidence interval 19.9%-20.1%) and 18% (95% confidence interval 17.9%-18.1%) of diaphragms were above or crossing the fifth ICS, respectively CONCLUSIONS: Ultrasound identified a significant number of potential chest tube insertion sites at the fifth ICS that would result in subdiaphragmatic insertion or diaphragmatic injury. Based on this data ultrasound can be used to identify safer insertion sites and reduce thoracostomy complications.

Creation of a Flight Nurse Critical Care Ultrasound Program.

OBJECTIVE: Our objectives were 2-fold: to describe the creation of a flight nurse (FN) ultrasound (US) program and to evaluate whether critical care US performed by nonphysician providers in the prehospital setting can clarify patient assessment. METHODS: Twenty FNs completed a didactic and hands-on US curriculum focusing on critical care modalities. FNs displayed competency by successful completion of an objective-structured clinical examination. Portable US devices were used during patient transports when deemed clinically indicated by the FN. If US was subsequently performed, the FN was asked if US use prompted a change in assessment. Associations were evaluated with chi-square and bivariate logistic regression analyses. RESULTS: FNs reported US use during 102 (12.3%) patient transports, of which intensive care unit (ICU) to ICU (58.8%) constituted the majority of cases followed by emergency department (ED) to ED (28.4%), ED to ICU (4.9%), and scene to ED (2.9%). FNs agreed or strongly agreed that US use clarified the cause of patient symptoms in 67.4% of transports. CONCLUSION: FNs were more likely to perform US when they expressed lower confidence in their initial patient assessment. FNs reported that US helped to clarify patient assessments.

Defining a Theory-Driven Ultrasound Curriculum for Prehospital Providers.

Advances in point-of-care ultrasound technology have allowed for the extension of emergency medicine ultrasound beyond the walls of the emergency department. Emergency medical system providers may benefit from the use of ultrasound. It has previously been shown that with a brief introductory course, novices can obtain and correctly interpret focused ultrasound examinations. The purpose of this study was to design a theory-driven point-of-care ultrasound curriculum to assess and develop ultrasound skill in prehospital providers. The resultant curriculum outlined in this paper encompasses a large array of skills that may be useful for different prehospital services to use to develop curriculum for their own needs.

A Perfect Storm: Tyrosine Kinase Inhibitor-Associated Polymorphic Ventricular Tachycardia.

BACKGROUND: Oral tyrosine kinase inhibitors (TKIs) are becoming increasingly common in oncology practice due to ease of administration and patient preference. This class of medications is relatively unknown to emergency physicians. CASE REPORT: Here we present a case of electrical storm (ES) thought to be associated with ibrutinib, a TKI. The ES was unabated despite antidysrhythmic therapy and electrical cardioversion, and was treated with supportive care, which eventually included the use of extracorporeal membrane oxygenation. This patient had no risk factors or apparent causes of recurrent ventricular tachycardia. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: ES has not previously been described with ibrutinib, but may be associated with off-target effects of the drug.

A WINning Technique: The Wire-in-Needle Feasibility Study.

BACKGROUND: Dynamic ultrasound guidance reduces complications associated with central venous catheter placement. However, successful central venous cannulation often remains challenging, particularly in hypotensive patients. The new wire-in-needle (WIN) technique can further increase periprocedural safety. Here, a needle is "preloaded" with a guidewire that is then advanced toward the tip of needle. The vein is then cannulated using long-axis ultrasound guidance. OBJECTIVE: To evaluate the feasibility and safety profile of the WIN technique. METHODS: Medical students, and resident and attending physicians participated in this study. After a brief lecture and practice session on the WIN technique, they underwent a skills assessment evaluating different aspects of both techniques. Participants then completed a survey assessing their prior experience regarding procedural ultrasound, and their assessment of the WIN technique. RESULTS: Sixty clinicians participated. The assessment of both techniques revealed no significant differences in the number of needle redirections, cannulation attempts, number of arterial punctures, or overall dexterity with the procedure. The WIN technique was faster (45.9 vs. 61.5 s, p = 0.0005) than the traditional technique. More participants confirmed the accurate position of the guidewire in the vein (75% vs. 95%, p = 0.002). More than 90% of study participants met the predefined safety aspects of the WIN technique. Almost all participants reported that they plan on using the WIN technique in their clinical practice. CONCLUSION: This study demonstrates that the WIN technique can be learned quickly and easily by clinicians with various levels of training. In this study, using manikins, it was as successful and safe as the traditional short-axis approach.

Staffing Patterns of Non-ACGME Fellowships with 4-Year Residency Programs: A National Survey.

Introduction: Emergency medicine (EM) is one of few specialties with variable training lengths. Hiring a three-year graduate to continue fellowship training in a department that supports a four-year residency program can lead to conflicts around resident supervision. We sought to understand hiring and clinical supervision, or staffing, patterns of non-Accreditation Council for Graduate Medical Education (ACGME) fellowships hosted at institutions supporting four-year residency programs. Methods: We performed a web-based, cross-sectional survey of non-ACGME fellowship directors (FD) hosted at institutions supporting four-year EM residency programs. We calculated descriptive statistics. Our primary outcome was the proportion of programs with four-year EM residencies that hire non-ACGME fellows graduating from three-year EM residencies. Results: Of 119 eligible FDs, 88 (74%) completed the survey. Seventy FDs (80%) indicated that they hire graduates of three-year residencies. Fifty-six (80%) indicated that three-year graduates supervise residents. Most FDs (74%) indicated no additional requirements exist to supervise residents outside of being hired as faculty. The FDs cited department policy, concerns about quality and length of training, and resident complaints as reasons for not hiring three-year graduates. A majority (10/18, 56%) noted that not hiring fellows from three-year programs negatively impacts recruitment and gives them access to a smaller applicant pool. Conclusion: Most non-ACGME fellowships at institutions with four-year EM programs recruit three-year graduates and allow them to supervise residents. This survey provides programs information on how comparable fellowships recruit and staff their departments, which may inform policies that fit the needs of their learners, the fellowship, and the department.

Consensus-based ethical best practices for performing educational point-of-care ultrasonography in the emergency department.

Objectives: There is no standardized protocol for performing educational point-of-care ultrasonography (POCUS) that addresses patient-centered ethical issues such as obtaining informed consent. This study sought to define principles for ethical application of educational POCUS and develop consensus-based best practice guidance. Methods: A questionnaire was developed by a trained ethicist after literature review with the help of a medical librarian. A diverse panel including experts in medical education, law, and bioethics; medical trainees; and individuals with no medical background was convened. The panel voted on their level of agreement with ethical principles and degree of appropriateness of behaviors in three rounds of a modified Delphi process. A high level of agreement was defined as 80% or greater consensus. Results: Panelists voted on 38 total items: 15 related to the patient consent and selection process, eight related to practices while performing educational POCUS, and 15 scenarios involving POCUS application. A high level of agreement was achieved for 13 items related to patient consent and selection, eight items related to performance practices, and 10 scenarios of POCUS application. Conclusions: Based on expert consensus, ethical best practices include obtaining informed consent before performing educational POCUS, allowing patients to decline educational POCUS, informing patients the examination is not intended to be a part of their medical evaluation and is not billed, using appropriate draping techniques, maintaining a professional environment, and disclosing incidental findings in coordination with the primary team caring for the patient. These practices could be implemented at institutions to encourage ethical use of educational POCUS when training physicians, fellows, residents, and medical students.

Military trainees can accurately measure optic nerve sheath diameter after a brief training session.

BACKGROUND: Identification of elevated intracranial pressure is important following traumatic brain injury. We assessed the feasibility of educating military trainees on accurately obtaining optic nerve sheath diameter measurements using a brief didactic and hands-on training session. Optic nerve sheath diameter is a noninvasive surrogate marker for elevated intracranial pressure, and may be of value in remote military operations, where rapid triage decisions must be made without access to advanced medical equipment. METHODS: Military trainees with minimal ultrasound experience were given a 5-min didactic presentation on optic nerve sheath diameter ultrasound. Trainees practiced optic nerve sheath diameter measurements guided by emergency physician ultrasound experts. Trainees then measured the optic nerve sheath diameter on normal volunteers. Following this, a trained physician measured the optic nerve sheath diameter on the same volunteer as a criterion standard. An average of three measurements was taken. RESULTS: Twenty-three military trainees were enrolled. A mixed design ANOVA was used to compare measurements by trainees to those of physicians, with a mean difference of - 0.6 mm (P = 0.76). A Bland-Altman analysis showed that the degree of bias in optic nerve sheath diameter measures provided by trainees was very small: d = - 0.004 for the right eye and d = - 0.007 for the left eye. CONCLUSION: This study demonstrates that optic nerve sheath diameter measurement can be accurately performed by novice ultrasonographers after a brief training session. If validated, point-of-care optic nerve sheath diameter measurement could impact the triage of injured patients in remote areas.

Feasibility study of advanced focused cardiac measurements within the emergency department.

BACKGROUND: This study aims to compare the increased time needed to perform advanced focused cardiac measurements in the emergency department, including diastolic heart failure evaluation via E/E', and cardiac output with LVOT/VTI. Patients with pertinent cardiopulmonary symptoms in the emergency department had a focused cardiac ultrasound performed by the emergency department ultrasound team. The ability to obtain basic cardiac windows, evaluate for effusion, systolic ejection fraction, and right-sided heart pressures were recorded. Advanced measurements, along with time to obtain all images and the training level of the provider, were recorded. RESULTS: Fifty-three patients were enrolled. Basic focused cardiac windows were able to be obtained in 80% of patients. The average 4-window focused cardiac ultrasound took 4 min and 49 s to perform. Diastolic measurements were able to be obtained in 51% of patients, taking an average of 3 min and 17 s. Cardiac output measurements were able to be obtained in 53% of patients, taking an average of 3 min and 8 s. CONCLUSION: The ability to obtain these images improved with increasing level of training. Performing both cardiac output and diastolic measurements increased the time with bedside ultrasound by 6 min and 25 s, and were able to be obtained in slightly over half of all ED patients.

Anything but Shadowing! Early Clinical Reasoning in Emergency Department Improves Clinical Skills.

INTRODUCTION: Transitioning from the pre-clinical environment to clerkships poses a challenge to students and educators alike. Students along with faculty developed the Clinical Reasoning Elective (CRE) to provide pre-clinical students exposure to patients in the emergency department and the opportunity to build illness scripts and practice clinical skills with longitudinal mentorship in a low-stakes environment before entering clerkships. It is a voluntary program. Each year, the CRE has received overwhelming positive feedback from students. The objective of this study is to determine if the CRE improved students' clinical skills and reported comfort in their skills. METHODS: We examined the relationships between students' self-reported participation in the CRE and their individual scores on a comprehensive clinical assessment (CCA) at the end of the pre-clerkship period. A total of 178 students took the CCA exam in 2016. Of these, 113 participated in the CRE and 65 did not. Seven students who participated in CRE did not complete the exit survey and were omitted from analysis. We performed regression analysis and dichotomous (participants/nonparticipants) comparisons of means with t-tests. Survey of student reactions was collected. RESULTS: Participants completed an average of 10 sessions over the course of the program (range=1-20). Involvement in the CRE was associated with significantly increased scores on Abdominal History; Pulmonary Physical Exam; Overall History-Taking; Overall Communication; and Overall Physical Exam (p<0.05). Nearly all students (97%) reported that the program offered opportunities to enhance clinical skills, increased their comfort with patients, and better prepared them for their clinical years. CONCLUSION: There were measurable improvements in clinical skills performance for students who participated in CRE. As many schools seek to incorporate early clinical exposure to their curricula, this program provides a successful framework to provide meaningful clinical exposure to real patients that also shows objective benefits to students' clinical skills.