Does Size Matter? A Prospective Study on the Feasibility of Using a Handheld Ultrasound Device in Place of a Cart-Based System in the Evaluation of Trauma Patients.

BACKGROUND: As emergency physicians are looking at handheld devices as alternatives to the traditional, cart-based systems, concerns center around whether they are forsaking image quality for a lower price point and whether the handheld can be trusted for medical decision making. OBJECTIVE: We aimed to determine the feasibility of using a handheld ultrasound device in place of a cart-based system during the evaluation of trauma patients using the Focused Assessment with Sonography for Trauma (FAST) examination. METHODS: This was a prospective study of adult trauma patients who received a FAST examination as part of their evaluation. A FAST examination was performed using a cart-based machine and a handheld device. The results of the examinations were compared with computed tomography imaging. Images obtained from both ultrasound devices were reviewed by an expert for image quality. RESULTS: A total of 62 patients were enrolled in the study. The mean (SD) time to perform a FAST examination using the handheld device was 307.3 (65.3) s, which was significantly less (p = 0.002) than the 336.1 (86.8) s with the cart-based machine. There was strong agreement between the examination results of the handheld and cart-based devices and between the handheld and computed tomography. Image quality scores obtained with the handheld device were lower than those from the cart-based system. Most operators and reviewers agreed that the images obtained from the handheld were adequate for medical decision making. CONCLUSIONS: Data support that it is feasible to use the handheld ultrasound device for evaluation of the trauma patient in place of the cart-based system.

The Use of Point-of-Care Ultrasound for the Diagnosis of Müllerian Abnormality in the Pediatric Emergency Department.

ABSTRACT: We present a case of an 18-year-old female patient with a history of primary amenorrhea presenting to a pediatric emergency department with complaint of new-onset vaginal bleeding. Upon the patient's presentation, she received a point-of-care ultrasound (POCUS), which promptly identified the lack of a uterus and led to the diagnosis of a müllerian duct anomaly. This is the first published report of müllerian agenesis identified in the pediatric emergency department using a transabdominal approach to pelvic POCUS. We recommend POCUS as a quick, noninvasive diagnostic approach for pediatric patients presenting with undifferentiated vaginal bleeding to guide further management.

Can ultrasound novices develop image acquisition skills after reviewing online ultrasound modules?

BACKGROUND: Point-of-care ultrasound is becoming a ubiquitous diagnostic tool, and there has been increasing interest to teach novice practitioners. One of the challenges is the scarcity of qualified instructors, and with COVID-19, another challenge is the difficulty with social distancing between learners and educators. The purpose of our study was to determine if ultrasound-naïve operators can learn ultrasound techniques and develop the psychomotor skills to acquire ultrasound images after reviewing SonoSim® online modules. METHODS: This was a prospective study evaluating first-year medical students. Medical students were asked to complete four SonoSim® online modules (aorta/IVC, cardiac, renal, and superficial). They were subsequently asked to perform ultrasound examinations on standardized patients utilizing the learned techniques/skills in the online modules. Emergency Ultrasound-trained physicians evaluated medical students' sonographic skills in image acquisition quality, image acquisition difficulty, and overall performance. Data are presented as means and percentages with standard deviation. All P values are based on 2-tailed tests of significance. RESULTS: Total of 44 medical students participated in the study. All (100%) students completed the hands-on skills evaluation with a median score of 83.7% (IQR 76.7-88.4%). Thirty-three medical students completed all the online modules and quizzes with median score of 87.5% (IQR 83.8-91.3%). There was a positive association between module quiz performance and the hands-on skills performance (R-squared = 0.45; p < 0.001). There was no statistically significant association between module performance and hands-on performance for any of the four categories individually. In all four categories, the evaluators' observation of the medical students' difficulty obtaining views correlated with hands-on performance scores. CONCLUSIONS: Our study findings suggest that ultrasound-naïve medical students can develop basic hands-on skills in image acquisition after reviewing online modules.

Point-of-Care Ultrasound in United States Pediatric Emergency Medicine Fellowship Programs: The Current State of Practice and Training.

OBJECTIVES: In 2015, the American Academy of Pediatrics (AAP) released a policy statement regarding point-of-care ultrasonography (POCUS) by pediatric emergency physicians, which included recommendations on education and training. In the 3 years since the AAP policy statement and its accompanying technical report were published, it is unclear which aspects of the recommendations set forth by this policy have been instituted by POCUS programs throughout the country. The objective of this study was to conduct a survey of pediatric emergency medicine (PEM) fellowship directors throughout the United States regarding the current state of education and training of POCUS in their department. METHODS: We conducted an online survey of all PEM fellowship program directors in the United States between April 1, 2018, and July 31, 2018. RESULTS: Of the 78 PEM fellowship program directors contacted, 62 (79.5%) responded. The majority reported having an ultrasound curriculum in place to educate their fellows (77%). Fellows are being taught using a variety of educational strategies. The most commonly reported barriers were lack of qualified faculty available for training (62.9%), lack of confidence or comfort in using the existing ultrasound machine(s) in their department (54.8%), and physician resistance to using new technology (50%). The majority of programs reported having processes in place for credentialing (56%) and quality assurance (72.6%). Whereas 77.4% have a system for archiving POCUS studies after they are performed, only half of the programs report utilization of middleware for their archival system. Compliance with documentation varied significantly between programs. CONCLUSIONS: Our survey results demonstrate that, although there is still room for improvement, POCUS programs have succeeded in many of the goals set forth by the 2015 AAP policy statement, such as establishing and growing an ultrasound curriculum and using various strategies to educate PEM fellows.

Handheld Ultrasound: Overcoming the Challenge of Difficult Peripheral Intravenous Access in the Emergency Department.

OBJECTIVES: The purpose of this study was to evaluate the performance of a handheld ultrasound device for difficult peripheral intravenous (PIV) access performed by nurses and paramedics in the emergency department (ED). METHODS: This was a retrospective review at an academic medical center. Participants were ED nurses and paramedics with competence in ultrasound-guided PIV placement. Participants were asked to log their use of the handheld device when used on patients deemed to have "difficult" access and complete a questionnaire, which consisted of items related to the effectiveness and ease of use of the device. Data were collected over the course of 1 year. An electronic medical record review was performed to track the success rates and the occurrence of any associated complications throughout the hospital stay. RESULTS: Nurses and paramedics logged a total of 483 cases in which PIV access was attempted with the handheld ultrasound device. Ninety-two percent (95% confidence interval [CI], 89%-94%) of the ultrasound-guided PIV lines attempted were placed successfully. Eighty-four percent (95% CI, 80%-87%) of the lines were placed successfully on the first attempt. In most cases (396 of 483 [82%]), no complications associated with the PIV occurred. A total of 429 questionnaires were completed over the study period. Most of the operators (84%; 95% CI, 80%-87%) stated that the handheld device was adequate to perform ultrasound-guided PIV access. CONCLUSIONS: The handheld ultrasound device performed well in terms of usability and reliability for PIV access.

Integration of Pre-intubation Ultrasound into Airway Management Course: A Novel Training Program.

OBJECTIVES: To determine the feasibility of integrating pre-intubation ultrasound into airway course and assess emergency medicine (EM) residents' confidence and comfort level in using ultrasound for pre-intubation hemodynamic stabilization and identifying cricothyroid membrane after the training session. MATERIALS AND METHODS: This is a retrospective study. Pre-intubation ultrasound training was delivered with the following ultrasound components (didactics and hands-on sessions using human models) to EM residents: (1) sonoanatomy and scanning technique to identify cricothyroid membrane and (2) pre-intubation echocardiography for recognition of acute right ventricular failure and pre-intubation hemodynamic stabilization. RESULTS: A total of 56 EM residents participated in this study. Only 21% [95% confidence interval (CI), 10-31%] reported using ultrasound for pre-intubation hemodynamic stabilization. After the training session, 89% (95% CI, 81-97%) reported that ultrasound-based teaching increased their knowledge of pre-intubation hemodynamic stabilization compared with traditional teaching methods. On a scale of 1 (low) through 10 (high), the average comfort level for integrating ultrasound findings into medical decision making for pre-intubation hemodynamic stabilization was 6.8 (95% CI, 6.3-7.3). Seventy-nine percent (95% CI, 68-89%) reported that focused training in airway ultrasound is adequate to identify cricothyroid membrane. On a scale of 1 (low) through 10 (high), the average confidence level for identifying cricothyroid membrane using ultrasound was 6.6 (95% CI, 6.1-7.1). CONCLUSION: At our institution, we successfully integrated pre-intubation ultrasound into an airway course. Emergency medicine residents had a moderate level of comfort and confidence level using ultrasound for pre-intubation hemodynamic stabilization and identifying cricothyroid membrane after the training session. HOW TO CITE THIS ARTICLE: Adhikari S, Situ-LaCasse E, Acuña J, Irving S, Weaver C, Samsel K, et al. Integration of Pre-intubation Ultrasound into Airway Management Course: A Novel Training Program. Indian J Crit Care Med 2020;24(3):179-183.

The use of cadaver models to diagnose rib fractures: A pilot study.

BACKGROUND: In the emergency department, rib fractures are a common finding in patients who sustain chest trauma. Rib fractures may be a sign of significant, underlying pathology, especially in the elderly patients where rib fractures are associated with significant morbidity and mortality. To date, no studies have evaluated the ability of ultrasound to detect rib fractures using cadaver models and subsequently use this model as a teaching tool. OBJECTIVES: The purpose of this study was to determine if it is possible to generate rib fractures on cadaver models which could be accurately identified using ultrasound. METHODS: This was a cross-sectional study performed during one session at a cadaver lab. A single hemithorax from four adult cadavers were used as models. Single rib fractures on each of rib five through eight were created. Four subjects, blinded to the normal versus fractured ribs, were asked to identify the presence of a fracture on each rib. RESULTS: A total of 8 of 16 potential ribs had fractured induced by study staff. Mean accuracy was 55% for all subjects. The overall sensitivity and specificity for detecting rib fractures was 50% (CI: 31.89-68.11) and 59.38% (CI: 35.69-73.55) respectively. The overall PPV and NPV was 55.17% and 54.29% respectively. CONCLUSIONS: In this pilot study, subjects were not able to detect induced rib fractures using ultrasound on cadaver models. The use of this model as a teaching tool in the detection of rib fractures requires further investigation.

Can emergency physicians accurately distinguish retinal detachment from posterior vitreous detachment with point-of-care ocular ultrasound?

STUDY OBJECTIVE: There is significant overlap between the symptoms of patients presenting with retinal detachment (RD) and posterior vitreous detachment (PVD). Urgency to obtain consultation and treatment are dependent on the ability to accurately distinguish these two conditions. The objective of this study was to determine the ability of emergency physicians to differentiate RDs from PVDs using point-of-care (POC) ocular ultrasound. METHODS: Single blinded cross-sectional study at an academic medical center. Emergency physicians with varying ultrasound experience completed a brief tutorial on the sonographic findings of RD and PVD. Thirty POC ocular ultrasound clips obtained from ED patients with ocular symptoms were presented to emergency physicians. The sonographic findings in these clips were in agreement with the final diagnosis made by consultant ophthalmologists. There were 14 ultrasound videos showing PVD, 13 videos showing RD, and 3 normal ocular ultrasound videos. The subjects independently reviewed POC ocular ultrasound video clips and submitted their final interpretations. RESULTS: A total of 390 ocular video clips were reviewed by 13 emergency physicians. Overall, physicians were able to accurately diagnose the presence of a RD 74.6% (95%CI, 69.8-79.4) of the time, PVD 85.7% (95%CI, 77.6-93.8) of the time, and normal ultrasounds 94.9% (95%CI 87.3-100.0) of the time. There was no statistically significant relationship between correct diagnoses for ocular abnormalities or normal ultrasound images and number of previous ocular ultrasounds performed by emergency physicians. CONCLUSION: Emergency physicians were modestly accurate in distinguishing RD from PVD on POC ultrasound.

The Status of Women in Emergency Ultrasound Fellowships: A Potential Light for the Future of Gender Inclusion in Academic Medicine.

BACKGROUND: The objective of this study is to investigate gender differences in the percentage of men and women who have completed an Emergency Ultrasound (EUS) fellowship over a four-year period. Secondary objectives of this study include evaluation of the career paths and accomplishments of women who have recently completed an EUS fellowship. We will also be assessing program characteristics as reported by the program directors. METHODS: This was an online survey of all EUS fellowship programs in the United States. Programs were excluded if they were not in existence before July 2020. The survey took place between September 16, 2021, and December 5, 2021. The study was approved by the appropriate institutional review board. Emergency Ultrasound fellowship programs and their respective program directors were identified from a list of participating programs created by the Society of Clinical Ultrasound Fellowships. The survey questions were divided into the following categories: program demographics, questions regarding the program's recent fellowship classes, and questions relating to the program director's perspective on gender and fellowship. RESULTS: This study utilized a convenience sample, from a roster of 109 programs, with a response rate of 67% by program directors. There was no significant difference in the percentage of men and women who have completed an EUS fellowship over a four-year period. No graduates who identified as transgender or non-binary/gender non-conform were reported. The majority of female fellows (65%) completed a research/scholarly project during their fellowship year (65%) and have held or currently hold a leadership position at their institution (60.3%). When program directors were asked if they felt women were equally represented in EUS fellowship programs, 24 (34.3%) respondents said yes, 18 (25.7%) said no, and 28 (40%) were not sure. When asked if they felt there were barriers that specifically prevented women from pursuing a fellowship, 28 (40%) said yes, 24 (34.3%) said no, and 18 (25.7%) were not sure. CONCLUSION: There does not exist a significant difference in the percentage of males and females who have completed an EUS fellowship over a four-year period. Completion of an EUS fellowship may provide women the opportunity to participate in research and receive awards for their accomplishments. It may also serve as a pipeline to academic medicine and leadership roles.

A Novel Simulation Model for Training Emergency Medicine Residents in the Ultrasound Identification of Landmarks for Cricothyrotomy.

Objectives The objective of this study is to describe a simple, replicable method to create neck models for the purpose of education and practice of ultrasound (US) identification of anatomic landmarks for cricothyrotomy. The second objective is to assess the model's capability in training emergency medicine (EM) residents in the US identification of anatomic landmarks for cricothyrotomy. Methods This is a cross-sectional study using a convenience sample of EM residents. Participants were taught to identify the thyroid cartilage, the cricothyroid membrane (CTM), and the cricoid cartilage using US. After an instructional period, participants performed a US examination on gel models designed to overly a live, human neck simulating various scenarios: thin neck, thick neck, anterior neck hematoma, and subcutaneous emphysema. Residents were asked to identify the thyroid cartilage, the CTM, and the cricoid cartilage as quickly as possible. The mean time to successful identification was reported in seconds. Following the scanning session, participants were asked to complete a post-survey. After the session, the video recordings were reviewed by an emergency US fellowship-trained physician to assess the visuomotor skills of each participant. Results A total of 42 residents participated in the study. Ninety-three percent (32/42; 95% CI 80.3% - 98.2%) of residents were able to obtain an optimal sagittal or parasagittal sonographic view of the anterior airway landmarks. Of these residents, 21.4% (9/42; 95% CI 11.5% - 36.2%) required minimal assistance with the initial probe placement. The visuomotor scores were recorded for each participant. Results of the pearson correlation indicated that there was a significant positive relationship between the residents' year in training with their visuomotor score (r(40) = .41, p = .007). When scanning the thin neck, 90.5% (38/42; 95% CI 77.4% - 96.8%) of residents were able to successfully identify the landmarks. The median time to completion was 27 seconds. When scanning the subcutaneous air model, 88.1% (37/42; 95% CI 74.5% - 95.3%) of residents were able to successfully identify the landmarks. The median time to completion was 26 seconds. When scanning the neck with the fluid collection 95.2% (40/42; 95% CI 83.4% - 99.5%) of residents were able to successfully identify the landmarks with a median time of 20 seconds for identification. When scanning the thick neck model, 73.8% (31/42; 95% CI 58.8% - 84.8%) of residents were able to successfully identify the landmarks taking a median time of 26 seconds. After the training session, 76.2% of residents reported that they felt either "confident" or "extremely confident" in identifying the CTM using US. Conclusion The novel anterior neck gel models used in this study were found to be adequate for training EM residents in the US identification of anterior neck anatomy. Residents were successfully trained in identifying the important anterior neck landmarks that are useful when predicting a difficult anterior airway and planning for surgical cricothyrotomy. Residents overall felt that the models simulated the appropriate anatomic scenarios. The majority felt confident in identifying the CTM using US.

A consensus list of ultrasound competencies for graduating emergency medicine residents.

Objectives: Emergency ultrasound (EUS) is a critical component of emergency medicine (EM) resident education. Currently, there is no consensus list of competencies for EUS training, and graduating residents have varying levels of skill and comfort. The objective of this study was to define a widely accepted comprehensive list of EUS competencies for graduating EM residents through a modified Delphi method. Methods: We developed a list of EUS applications through a comprehensive literature search, the American College of Emergency Physicians list of core EUS benchmarks, and the Council of Emergency Medicine Residency-Academy of Emergency Ultrasound consensus document. We assembled a multi-institutional expert panel including 15 faculty members from diverse practice environments and geographical regions. The panel voted on the list of competencies through two rounds of a modified Delphi process using a modified Likert scale (1 = not at all important, 5 = very important) to determine levels of agreement for each application-with revisions occurring between the two rounds. High agreement for consensus was set at >80%. Results: Fifteen of 15 panelists completed the first-round survey (100%) that included 359 topics related to EUS. After the first round, 195 applications achieved high agreement, four applications achieved medium agreement, and 164 applications achieved low agreement. After the discussion, we removed three questions and added 13 questions. Fifteen of 15 panelists completed the second round of the survey (100%) with 209 of the 369 applications achieving consensus. Conclusion: Our final list represents expert opinion on EUS competencies for graduating EM residents. We hope to use this consensus list to implement a more consistent EUS curriculum for graduating EM residents and to standardize EUS training across EM residency programs.

Point-of-care Ultrasound to Distinguish Subgaleal and Cephalohematoma: Case Report.

INTRODUCTION: Cephalohematomas generally do not pose a significant risk to the patient and resolve spontaneously. Conversely, a subgaleal hematoma is a rare but more serious condition. While it may be challenging to make this diagnostic distinction based on a physical examination alone, the findings that differentiate these two conditions can be appreciated on point-of-care ultrasound (POCUS). We describe two pediatric patient cases where POCUS was used to distinguish between a subgaleal hematoma and a cephalohematoma. CASE REPORTS: We describe one case of a 14-month-old male brought to the pediatric emergency department (PED) with concern for head injury. A POCUS examination revealed a large fluid collection that did not cross the sagittal suture. Thus, the hematoma was more consistent with a cephalohematoma and less compatible with a subgaleal hematoma. Given these findings, further emergent imaging was deferred in the PED and the patient was kept for observation. In the second case an 8-week-old male presented with suspected swelling over the right parietal region. A POCUS examination was performed, which demonstrated an extensive, simple fluid collection that extended across the suture line, making it more concerning for a subgaleal hematoma. Given the heightened suspicion for a subgaleal hematoma, the patient was admitted for further imaging and evaluation. CONCLUSION: Point-of-care ultrasound can be used to help differentiate between a subgaleal hematoma and a cephalohematoma to risk-stratify patients and determine the need for further imaging.

The Use of Point-of-care Ultrasound in the Diagnosis of Pott's Puffy Tumor: A Case Report.

INTRODUCTION: Pott's puffy tumor (PPT) is a rare clinical disease characterized by forehead swelling from a subperiosteal abscess coupled with frontal bone osteomyelitis. It is often associated with severe complications and poor outcomes if left undiagnosed; thus, rapid recognition is crucial. Point-of-care ultrasound (POCUS) may provide an alternative pathway to diagnosis. It can be performed rapidly at the bedside and assist in early screening of patients, identifying those with high suspicion for PPT and prioritizing imaging and consultation. CASE REPORT: A 59-yghb ar-old-male presented to the emergency department for evaluation of a "lump" on his forehead. He recently had a bifrontal craniotomy to de-bulk a polyp burden in an effort to manage his recurrent sinusitis. To further characterize the mass, a POCUS examination was performed by the treating emergency physician. The examination found a subcutaneous, hypoechoic fluid collection extending superficially along the frontal bone. A discontinuity in the surface of the frontal bone was visualized through which the collection appeared to extend. Given the heightened concern for PPT based on the POCUS examination findings, otolaryngology service was consulted and the patient was admitted for further imaging and treatment. CONCLUSION: Pott's puffy tumor is a rare diagnosis that has the potential for life-threatening complications. Timely diagnosis is imperative. Point-of-care ultrasound can easily be used to help identify patients with suspicion for PPT in the acute care setting and influence patient management with regard to obtaining further imaging and plans for early consultation.

Point-of-care Ultrasound to Evaluate Breast Pathology in the Emergency Department.

INTRODUCTION: As physician-performed point-of-care ultrasound (POCUS) becomes more prevalent in the evaluation of patients presenting with various complaints in the emergency department (ED), one application that is significantly less used is breast ultrasound. This study evaluates the utility of POCUS for the assessment of patients with breast complaints who present to the ED and the impact of POCUS on medical decision-making and patient management in the ED. METHODS: This was a retrospective review of ED patients presenting with breast symptoms who received a POCUS examination. An ED POCUS database was reviewed for breast POCUS examinations. We then reviewed electronic health records for demographic characteristics, history, physical examination findings, ED course, additional imaging studies, and impact of the POCUS study on patient care and disposition. RESULTS: We included a total of 40 subjects (36 females, 4 males) in the final analysis. Most common presenting symptoms were breast pain (57.5%) and a palpable mass (37.5%). "Cobblestoning," ie, dense bumpy appearance, was the most common finding on breast POCUS, seen in 50% of the patients. Simple fluid collections were found in 37.5% of patients. CONCLUSION: Our study findings illustrate the utility of POCUS in the evaluation of a variety of breast complaints in the ED.

The Use of Point-of-Care Ultrasound for Arthrocentesis Among Emergency Medicine Residents.

INTRODUCTION: The objective of this study is to determine if EM resident physicians are able to successfully utilize POCUS to perform an arthrocentesis in the ED. This is a retrospective review of ED patients who received an ultrasound-guided or ultrasound-assisted arthrocentesis performed in the ED over a 6-year period by an EM resident physician. METHODS: This was a retrospective review of ED patients who received an ultrasound-guided or ultrasound-assisted arthrocentesis performed in the ED over a 6-year period by an EM resident physician. An ED POCUS database was reviewed for POCUS examinations where an arthrocentesis was performed. Electronic medical records were then reviewed for demographic characteristics, history, physical examination findings, ED course, additional imaging studies, and the impact of the POCUS study on patient care and disposition. RESULTS: A total of 101 POCUS examinations of patients were included in the final analysis. The POCUS examinations and procedures were performed by 59 different EM residents at various levels of training. Overall, 92.1% (93/101) of the procedures were successful. When assessing for image quality, 98/101 (97%) had recognizable structures at minimum. The majority of the patients (84/101, 83.2%) received additional imaging of the affected joint. In the minority of cases (23/101, 22.8%), the ultrasound-assisted approach was utilized, while 78/100 (77.2%) utilized the ultrasound-guided approach. For the studies that utilized the ultrasound-guided approach, the quality of needle visualization was determined to be "good" 40/78 (51.3%). CONCLUSION: EM resident physicians are able to utilize POCUS to perform an arthrocentesis in the ED. Further research is encouraged to determine whether having residents utilize POCUS to perform an arthrocentesis has a significant impact on outcomes and patient care.