Point-of-care Ultrasound Research Articles

Recommendations for Cardiac Point-of-Care Ultrasound Nomenclature.

Point-of-care ultrasound (POCUS) involves the acquisition, interpretation, and immediate clinical integration of ultrasonographic imaging performed by a treating clinician. The current state of cardiac POCUS terminology is heterogeneous and ambiguous, in part because it evolved through siloed specialty practices. In particular, the medical literature and colloquial medical conversation contain a wide variety of terms that equate to cardiac POCUS. While diverse terminology aided in the development and dissemination of cardiac POCUS throughout multiple specialties, it also contributes to confusion and raises patient safety concerns. This statement is the product of a diverse and inclusive Writing Group from multiple specialties, including medical linguistics, that employed an iterative process to contextualize and standardize a nomenclature for cardiac POCUS. We sought to establish a deliberate vocabulary that is sufficiently unrelated to any specialty, ultrasound equipment, or clinical setting to enhance consistency throughout the academic literature and patient care settings. This statement (1) reviews the evolution of cardiac POCUS-related terms; (2) outlines specific recommendations, distinguishing between intrinsic and practical differences in terminology; (3) addresses the implications of these recommendations for current practice; and (4) discusses the implications for novel technologies and future research.

Web-based objective and structured assessment of point-of-care lung ultrasound skills in resource-limited settings

BackgroundObjective assessment of skills after training is essential for safe implementation of lung point-of-care ultrasound (POCUS). In low-and middle-income countries (LMIC) there is a need for assessment tools without onsite experts to scale up POCUS access. Our objective is to develop a web-based assessment tool and evaluate trainees across different countries and at different time points after initial lung POCUS training.MethodsWe adapted the objective and validated lung ultrasound score (LUS-OSAUS) to a web-based tool with quiz and practical skills test. Trainees were evaluated after a short (4-day) standardized lung POCUS training and were classified in distinct groups according to (i) their geographical location (Benin vs. South-Africa) and (ii) time elapsed since training (Benin 0 months vs. Benin 6 months). The Benin 6 months group had minimal continuous education. Skills test images were read by two blinded experts. We report the overall success rates and then compare these rates based on location and timing since training, using the Fischer’s exact test.ResultsA total of 35 out of 43 participants completed the online LUS-OSAUS quiz and skills test. The overall success rate was 0.84 (95%CI 0.80–0.88), with lower success rates for “correct depth” 0.54 (0.37–0.71), “correct assessment of pleura” 0.63 (0.45–0.79) and “conclusion” 0.71 (0.54–0.85). There were no differences based on location, with respective rates of 0.86 (0.80–0.92) and 0.83 (0.75–0.91) (p-value = 0.125) for Benin and South Africa at 0 months, respectively. Similarly, there were no differences according to timing with success rates of 0.86 (0.80–0.92) and 0.82 (0.72–0.93) (p-value = 0.563) for Benin at 0 months and 6 months, respectively.ConclusionWeb-based objective and structured assessment of lung POCUS skills in LMIC following a short-standardized training is feasible and has a good overall success rate with consistent results across regions and up to 6 months after training given minimal continuous education. Overall, technical and POCUS-based clinical conclusion skills are the most difficult to acquire.

POCUS literature primer: key papers on cardiac and lung POCUS.

Although point of care ultrasound (POCUS) use has become prevalent in medicine, clinicians may not be familiar with the evidence supporting its utility in patient care. The objective of this study is to identify the top five most influential papers published on the use of cardiac POCUS and lung POCUS in adult patients. A 14-member expert panel from the Canadian Association of Emergency Physicians (CAEP) Emergency Ultrasound Committee and the Canadian Ultrasound Fellowship Collaborative used a modified Delphi process. Panel members are ultrasound fellowship trained or equivalent, are engaged in POCUS scholarship, and are leaders in POCUS locally and nationally in Canada. The modified Delphi process consisted of three rounds of sequential surveys and discussion to achieve consensus on the top five most influential papers on cardiac POCUS and lung POCUS. A total of 66 relevant papers on cardiac POCUS and 68 relevant papers on lung POCUS were nominated by the panel. There was 100% participation by the panel members in all three rounds of the modified Delphi process. At the end of this process, we identified the top five most influential papers on cardiac POCUS and lung POCUS. Papers include studies supporting the use of POCUS for accurately assessing left ventricular systolic function, diagnosing pericardial effusion, clarifying its test characteristics for pulmonary embolism, identifying pulmonary edema and pneumonia, as well as consensus statements on the use of cardiac and lung POCUS in clinical practice. We have created a list of the top five influential papers on cardiac POCUS and lung POCUS as an evidence-based resource for trainees, clinicians, and researchers. This will help trainees and clinicians better understand how to use POCUS when scanning the heart and lungs, and it will also help researchers better understand where to direct their scholarly efforts with future research.

Point-of-care ultrasound (POCUS) in Pediatric scrotal emergencies

Point-of-care ultrasound (POCUS) in Pediatric scrotal emergencies

The Use of Point-of-Care Ultrasound in Pediatric Emergency Departments and Intensive Care Units: A Descriptive Study From Turkey.

The aim was to evaluate the current status of point-of-care ultrasound (POCUS), perceptions, education, training, and barriers to using POCUS in pediatric emergency departments (PEDs) and pediatric intensive care units (PICUs) in Turkey. A descriptive, multicenter, cross-sectional study through an online survey was developed using the REDCap online platform. The survey was distributed through the Turkish Society of Pediatric Emergency and Intensive Care e-mail group. Each survey was answered only once by each PED/PICU and by the clinical chief of the department. A total of 19 PEDs and 26 PICUs responded to the survey. Among them, 84.2% of PEDs and 100% of PICUs reported the clinical use of POCUS. For diagnostic applications, the most common areas for PEDs and PICUs were thoracic (93.7%/100%) and cardiovascular (62.5%/65.4%) assessment, and in the procedural use of POCUS, the most frequent applications were those for vascular access (75.0%/92.3%) and thoracentesis (31.2%/65.4%). The most commonly reported clinical benefits were rapid diagnosis, rapid treatment, and decreased complications during procedural applications for PEDs and PICUs. Evaluating the barriers to POCUS use in PEDs and PICUs, the most common reasons for insufficient use were the lack of ultrasound machines and/or equipment, a shortage of manpower, lack of awareness, and lack of training. For PEDs (68.4%) and for PICUs (84.6%), participants agreed that POCUS training should be mandatory during fellowship programs. Most participants were aware of the need for POCUS. However, lack of education, equipment, manpower, and infrastructure still emerged as barriers to the use of POCUS. To further promote POCUS use, it would be helpful to improve accessibility by ensuring sufficient numbers of ultrasound devices together with sufficient numbers of appointed physicians and by expanding POCUS education in PEDs and PICUs.

Point-of-Care-Ultrasound Quality Assurance Data from Fellow-Performed Exams in a Pediatric Emergency Department: A Descriptive Study.

Point-of-care-ultrasound (POCUS) is increasingly used by pediatric emergency medicine (PEM) fellows, but scant data exists on the accuracy of exam interpretations. Our goal was to determine whether agreement on exam interpretation between quality assurance (QA) faculty (reference standard) and PEM fellows varied by fellowship year or exam type. Retrospective review of fellow-performed POCUS exams between January 2019 and June 2022. Negative binomial (NB) random effects regression was used to account for longitudinal measurement of individual fellow performance across 3 years. Fixed effects were exam type and fellowship year. To assess between- and within-user variability across time, a random intercept and slope were included for each fellow. Exactly 3032 exams, performed by 24 fellows, were included. Raw proportion agreement by fellowship year was high for all exam types (≥88%). From the NB model, there was no statistically significant effect of fellowship year on the mean count of agreement. The relative risk (RR) of agreement for exam types was greatest for cardiac vs other types. The standard deviations for the random intercept and random slope were 0.09 and 0.04, respectively, with a correlation of -0.94. PEM fellows generally interpret exams correctly, with little variation through fellowship, although those who began with more basic skills showed more progress over time. Fellowship year did not influence the likelihood of correct interpretation but there was variation across exam type, with the best agreement for cardiac exams. The extent to which disagreements between fellows and QA faculty represent clinically significant errors requires further study.

Let the Ultrasound Games Begin: Developing Knowledge and Clinical Skills With Gamification.

Point of Care Ultrasonography (POCUS) is customary practice in the clinical setting. Formal training ensures competent skills using POCUS but is lacking. Preparing nurse practitioners in POCUS with gamification is an innovative educational tool. The Attention, Relevance, Confidence, and Satisfaction (ARCS) model was used to implement POCUS. Learners participated in a bracket-style elimination tournament. Learners (N = 109) in the adult-gerontology acute care nurse practitioner track participated. Eighty-eight Bachelor of Science in Nursing (BSN) to Master of Science in Nursing and 21 BSN to Doctor of Nursing Practice learners. Extremely satisfied with the experience were 72.36%, 67.11% were somewhat comfortable, 10.53% were extremely comfortable, and 11.84% were somewhat uncomfortable using POCUS. Gamification for POCUS training is a practical tool to develop knowledge and comfort using ultrasound. Adult learners retain information in various modalities and gamification offers them a multimodal learning opportunity that increases competency. [J Nurs Educ. 2024;63(X):XXX-XXX.].

Early point-of-care echocardiography as a predictive factor for absence of return of spontaneous circulatory in out-of-hospital cardiac arrests: A multicentre observational study

IntroductionEarly assessment of the prognosis of a patient in cardiac arrest during cardiopulmonary resuscitation is highly challenging. This study aims to evaluate the predictive outcome value of early point-of-care ultrasound (POCUS) in out-of-hospital settings. MethodsThis observational, prospective, multicentre study’s primary endpoint was the positive predictive value (PPV) of POCUS cardiac standstill within the first 12 min of advanced life support (ALS) initiation in determining the absence of return of spontaneous circulation (ROSC). A multivariate logistic regression model was constructed with adjustments for known predictive variables typically used in termination of resuscitation (TOR) rules. ResultsA total of 293 patients were analysed, with a mean age of 66.6 ± 14.6 years, and a majority were men (75.8%). POCUS was performed on average 7.9 ± 2.6 min after ALS initiation. Among patients with cardiac standstill (72.4%), 16.0% achieved ROSC compared with 48.2% in those with visible cardiac motions. The PPV of early POCUS cardiac standstill for the absence of ROSC was 84.0%, 95% CI [78.3–88.6]. In multivariable analysis, only POCUS cardiac standstill (adjusted odds ratio [aOR] 3.89, 95% CI [1.86–8.17]) and end-tidal CO2 (ETCO2) value ≤37 mmHg (aOR 4.27, 95% CI [2.21–8.25]) were associated with the absence of ROSC. ConclusionEarly POCUS cardiac standstill during CPR for out-of-hospital cardiac arrest was a reliable predictor of the absence of ROSC. However, its presence alone was not sufficient to determine the termination of resuscitation efforts.Trial registration:ClinicalTrials.gov Identifier: NCT 03494153. Registered March 29, 2018.

Point-of-care ultrasound to assess left ventricular ejection fraction in heart failure in unselected patients in primary care: a systematic review.

Heart failure (HF) is the most frequent cardiovascular pathology in primary care. Echocardiography is the gold standard for diagnosis, follow-up, and prognosis of HF. Point-of-care ultrasound (POCUS) is of growing interest in daily practice. This study aimed to systematically review the literature to evaluate left ventricular ejection fraction (LVEF) assessment of unselected patients in primary care by non-expert physicians with cardiac POCUS (cPOCUS). We searched in Medline, Embase, and Pubmed up to January 2024 for interventional and non-interventional studies assessing LVEF with cPOCUS in unselected patients with suspected or diagnosed HF in hospital or outpatient settings, performed by non-expert physicians. Forty-two studies were included, involving 6598 patients, of whom 60.2% were outpatients. LVEF was assessed by 351 non-expert physicians after an initial ultrasound training course. The LVEF was mainly assessed by visual estimation (90.2%). The most frequent views were parasternal long/short axis, and apical 4-chamber. The median time of cPOCUS was 8 minutes. A strong agreement was found (κ = 0.72 [0.63; 0.83]) compared to experts when using different types of ultrasound devices (hand-held and standard), and agreement was excellent (κ = 0.84 [0.71; 0.89]) with the same device. Training course combined a median of 4.5 hours for theory and 25 cPOCUS for practice. The use of cPOCUS by non-expert physicians after a short training course appears to be an accurate complementary tool for LVEF assessment in daily practice. Its diffusion in primary care could optimize patient management, without replacing specialist assessment.

Two-week intensive medical student point-of-care ultrasound training impact on long term utilization

BackgroundThere is little to no data evaluating long term usage of point of care ultrasound (POCUS) after a training intervention for medical students. The purpose of this study was to examine the impact of an intensive POCUS training program on medical student’s usage at 9-months post-program.MethodsThis was a prospective cross-sectional study of rising second year medical students who participated in a 2-week summer POCUS training program. Instruction consisted of 8 h of asynchronous online didactic material, 2–4 h of daily hands-on instructor-led and independent scanning, and instruction on how to teach POCUS. Students were assessed pre- and post-program, and again at 9 months post-program to evaluate POCUS usage.ResultsA total of 56 students participated in the program over 2 summers; 52 (92.9%) responded to the 9-month post-program survey. At 9 months, 49 (94.2%) of students taught POCUS after the program to peers or faculty. Students reported serving as a POCUS instructor in 283 subsequent teaching sessions accounting for 849 h of POCUS instruction time. Six (11.5%) students were involved in the creation of a POCUS interest group on their regional campus, 7 (13%) created a POCUS curriculum for their student interest group, and 4 (7.7%) created an opt-in co-curricular POCUS program for students at their regional campus. Three (5.8%) students did not serve as educators after the program and only one student reported not using POCUS again after the program.ConclusionAfter a 2-week intensive POCUS training program for medical students, the majority of students demonstrated continued involvement in POCUS learning and education at 9-month follow-up including serving as peer instructors and assisting with limitations in financial resources and trained faculty.

Point-of-care ultrasound Training in Nephrology: a position statement by the International Alliance for POCUS in Nephrology

Abstract Point-of-care Ultrasonography (POCUS) has rapidly evolved from a niche technology to an indispensable tool across medical specialties, including nephrology. This evolution is driven by advancements in technology and the visionary efforts of clinicians in emergency medicine and beyond. Recognizing its potential, medical schools are increasingly integrating POCUS into training curricula, emphasizing its role in enhancing diagnostic accuracy and patient care. Despite these advancements, barriers such as limited faculty expertise and standardized guidelines hinder widespread adoption and regulation. The International Alliance for POCUS in Nephrology (IAPN), through this position statement, aims to guide nephrologists in harnessing the diagnostic power of POCUS responsibly and effectively. By outlining core competencies, recommending training modalities, and advocating for robust quality assurance measures, we envision a future where POCUS enhances nephrology practice globally, ensuring optimal patient outcomes through informed, evidence-based decision-making. International collaboration and education are essential to overcome current challenges and realize the full potential of POCUS in nephrology and beyond.

Deep Learning for Point-of-Care Ultrasound Image Quality Enhancement: A Review

The popularity of handheld devices for point-of-care ultrasound (POCUS) has increased in recent years due to their portability and cost-effectiveness. However, POCUS has the drawback of lower imaging quality compared to conventional ultrasound because of hardware limitations. Improving the quality of POCUS through post-image processing would therefore be beneficial, with deep learning approaches showing promise in this regard. This review investigates the state-of-the-art progress of image enhancement using deep learning suitable for POCUS applications. A systematic search was conducted from January 2024 to February 2024 on PubMed and Scopus. From the 457 articles that were found, the full text was retrieved for 69 articles. From this selection, 15 articles were identified addressing multiple quality enhancement aspects. A disparity in the baseline performance of the low-quality input images was seen across these studies, ranging between 8.65 and 29.24 dB for the Peak Signal-to-Noise Ratio (PSNR) and between 0.03 an 0.71 for the Structural Similarity Index Measure (SSIM). In six studies, where both the PSNR and the SSIM metrics were reported for the baseline and the generated images, mean differences of 6.60 (SD ± 2.99) and 0.28 (SD ± 0.15) were observed for the PSNR and SSIM, respectively. The reported performance outcomes demonstrate the potential of deep learning-based image enhancement for POCUS. However, variability in the extent of the performance gain across datasets and articles was notable, and the heterogeneity across articles makes quantifying the exact improvements challenging.

Current use, training, and barriers in point-of-care ultrasound in nephrology: A national survey of VA medical centers.

Point-of-care ultrasound (POCUS) can improve diagnostic accuracy, reduce procedural complications and enhance physician-patient interactions in nephrology. Currently, there is limited knowledge about how practicing nephrologists are using POCUS. This study aimed to characterize current POCUS use, training needs, and barriers to use among nephrology groups. A prospective observational study of all Veterans Affairs (VA) medical centers was conducted between August 2019 and March 2020 using a web-based survey sent to all chiefs of staff and nephrology specialty chiefs. Chiefs of staff (n=130) and nephrology chiefs (n=79) completed surveys on facility- and service-level POCUS use (response rates of 100% and 77%, respectively). Current diagnostic or procedural POCUS use was reported by 41% of nephrology groups, and the most common POCUS applications were central line insertion (28%) and assessment of urinary retention (23%), hydronephrosis (18%), volume status (15%), and bladder (14%). Lack of training was the most common barrier (72%), and most nephrology groups (65%) desired POCUS training. Limited access to ultrasound equipment and POCUS training were barriers reported by 54% and 18% of groups, respectively. A minority of nephrology groups currently use common POCUS applications including evaluation of urinary retention, hydronephrosis, and volume status. The most common barriers to POCUS use in nephrology were lack of trained providers and ultrasound equipment. Investment in POCUS training and infrastructure is needed to expand and standardize POCUS use in nephrology.

Using Simulation Models to Train Clinicians in the Use of Point-of-Care Ultrasound.

The use of point-of-care ultrasound (POCUS) has shown to be a beneficial non-invasive vascular access assessment method by clinicians, which can provide critical elements of visual and measurable information that proves to be useful in the context of vascular access cannulation, in combination with the practical skill of the clinician performing the cannulation. However, the use of POCUS in this context is to practically train and enable individuals who are novices in using this technique to become proficient in performing this task subsequently on patients in a careful and successful way. The simulation of these vascular conditions may be useful to help healthcare professionals learn, understand, apply, and establish such practical skills for vascular cannulation safely to achieve the desired outcomes. This project intended, through the attendance of a half-day workshop, to establish skills to use POCUS in connection with simulation models and perform specific tasks to enable clinicians to use this method in their clinical practice for vascular access cannulation in patients. A mixed-methods longitudinal study design was used to evaluate the effect of a point-of-care ultrasound workshop for peripheral intravenous cannula insertion, including specific tasks for the participants to be performed on simulation models. A total of 81 individuals participated in 11 half-day workshops through 2021 and 2022. Offering a workshop that uses simulation models in combination with various POCUS devices is useful in establishing this newly learned skill in clinicians, such as measurements of depth, caliper, and direction of a vein with POCUS prior to cannulation providing essential anatomical facts to the operator, which increases the likelihood of first-time success in cannulation.

2226 Assessing quantitative sonographic changes in the muscle mass of geriatric patients hospitalised using point of care ultrasound

Abstract Introduction One of the most important consequences of hospitalisation in older patients is sarcopenia. This study aims to determine the impact of hospitalisation on the muscle mass, functional status, nutritional status, and short-term clinical outcomes. Methods A prospective study of patients admitted to an Acute Geriatric Ward between 1st November and 30th December 2022. Muscle ultrasound, utilising Point of Care Ultrasound (POCUS) at bedside, was employed to estimate rectus femoris muscle thickness (MT), area (Ar), pennation angle (PA), and fascicle length (FL) at the time of hospital admission, 3 days post-admission, and at hospital discharge. Results 30 patients included, with a median age of 84 years (SD 72–93), 63.3% male, and 70% Clinical Frailty Scale score ≥ 4. Barthel Index and Functional Ambulation Category revealed median values of 72.33 and 3.87 respectively. Global Deterioration Scale median was 2.47. Mini Nutritional Assessment Short-Form (MNA) and total serum protein showed median values of 7.40 and 6.35 respectively. The median length of hospital stay was 5.79 days, with inpatient mortality rate of 10% and 53.3% incidence of delirium. Ultrasound showed a decrease in PA by 36.31%, Ar by 34.30%, and MT by 24.50%, and increase in FL by 10.47%. Sarcopenia classification at admission and discharge revealed an increase in mean index from 5.04 to 7.74. Conclusions In our cohort of patients admitted to an acute geriatric unit, POCUS identified real-time decreases in MT, Ar, and PA at the muscular level before these manifested as functional changes. It demonstrated an inverse relationship between frailty and muscle morphology as living with frailty associated further decreases in muscle mass at discharge. The study also established a direct relationship between MNA, muscle thickness, PA, and fascicles length at discharge. POCUS assessment of muscle mass could indirectly predict outcomes and guide decisions to address muscle mass abnormalities.

Kidney Blood Flow and Renin-Angiotensin-Aldosterone System Measurements Associated With Kidney and Cardiovascular Dysfunction in Pediatric Shock.

Pediatric acute kidney injury (AKI) is a prevalent and morbid complication of shock. Its pathogenesis and early identification remain elusive. We aim to determine whether renal blood flow (RBF) measurements by point-of-care ultrasound (POCUS) and renin-angiotensin-aldosterone system (RAAS) hormones in pediatric shock associate with vasoactive requirements and AKI. This is a single-center prospective, noninterventional observational cohort study in one tertiary PICU in North American from 2020 to 2022 that enrolled children younger than 18 years with shock without preexisting end-stage renal disease. RBF was measured by POCUS on hospital days 1 and 3 and plasma RAAS hormone levels were measured on day 1. The primary outcome was the presence of AKI by Kidney Disease Improving Global Outcomes criteria at first ultrasound with key secondary outcomes of creatinine, blood urea nitrogen (BUN), Vasoactive-Inotrope Score (VIS), and norepinephrine equivalent dosing (NED) 48 hours after first ultrasound. Fifty patients were recruited (20 with AKI, mean age 10.5 yr, 48% female). POCUS RBF showed lower qualitative blood flow (power Doppler ultrasound [PDU] score) and higher regional vascular resistance (renal resistive index [RRI]) in children with AKI (p = 0.017 and p = 0.0007). Renin and aldosterone levels were higher in the AKI cohort (p = 0.003 and p = 0.007). Admission RRI and PDU associated with higher day 3 VIS and NED after adjusting for age, day 1 VIS, and RAAS hormones. Admission renin associated with higher day 3 creatinine and BUN after adjusting for age, day 1 VIS, and the ultrasound parameters. In pediatric shock, kidney blood flow was abnormal and renin and aldosterone were elevated in those with AKI. Kidney blood flow abnormalities are independently associated with future cardiovascular dysfunction; renin elevations are independently associated with future kidney dysfunction. Kidney blood flow by POCUS may identify children who will have persistent as opposed to resolving AKI. RAAS perturbations may drive AKI in pediatric shock.

Point-of-Care Ultrasound Track in an Academic Family Medicine Department.

Point-of-care ultrasound (POCUS) is increasingly being employed in family medicine. Residency tracks can be an effective way to increase mastery in a specific subdiscipline for interested residents, but no studies exist on the implementation of a POCUS track in family medicine. We address this gap in the literature by assessing POCUS use by POCUS track residents compared to non-POCUS track residents and faculty in an academic family medicine department. We performed a retrospective review of all POCUS scans completed in the first year after implementation of a family medicine residency POCUS track. Scans were analyzed by two reviewers. We compared scan volume and type between POCUS track residents, non-POCUS track residents, and faculty. A blinded quality analysis was performed on each group of scans. A total of 572 scans were completed on 536 patients over 1 year. POCUS track residents scanned significantly more than non-POCUS track residents (mean difference of 72.2, CI 59.1 to 85.4; P<.0001). The most common scan types across groups were musculoskeletal and soft tissue. POCUS track residents showed statistically improved scan quality in all scan types, while non-POCUS track residents showed statistical improvement only in soft tissue, shoulder, and abdominal aortic aneurysm scans. This is the first longitudinal study of a novel academic family medicine residency POCUS track. Participation in a POCUS track can increase the number, variety, and quality of scans performed. Our curriculum can be a model for family medicine residency programs that wish to provide robust POCUS training.

Interobserver agreement of an ED PoCUS video training dataset of normal appendix and appendicitis in children

BackgroundEducational video datasets can be an effective method for training in emergency department (ED) point-of-care ultrasound (PoCUS). A video dataset for normal appendix and appendicitis in children using ED PoCUS images was developed to assess interobserver agreement, as measured by Cohen’s Kappa on key sonographic findings.MethodsThree sets of 25 ED PoCUS videos were selected and curated from pediatric patients with normal appendix and acute appendicitis. Four participant ED sonologist-physicians were trained on the first set of 25 videos showing normal appendix or normal bowel in patients without appendicitis to note if normal appendix was seen in any part or in it’s entirety from tip-to-cecum. They were then tested on the second set of similar videos. A third set of 25 videos from patients who had appendicitis where participant sonologists were asked to note if appendicitis was present or absent, with and without appendicolith or perforation. Cohen’s Kappa was calculated in aggregate and stratified by experience vs. novice against a senior sonologist-physician aware of all patient outcomes for visualization of: 1. any part of normal appendix, 2. normal appendix visualized from tip to cecum 3. any part of appendicitis, 4. appendicolith, 5. appendiceal perforation.ResultsCohen’s Kappa for any part of normal appendix, 0.71, 95% CI (0.58–0.85); normal appendix tip-to-cecum, 0.43, 95% CI (0.19–0.67), appendicitis, 0.53, 95%CI (0.34–0.70), appendicolith, 0.63, 95%CI (0.43–0.84), perforated appendicitis, 0.46, 95%CI (0.22–0.70). Stratified by experienced vs. novice: any part of normal appendix, 0.75 vs. 0.68; normal appendix tip-to-cecum, 0.50 vs. 0.36; appendicitis, 0.78 vs. 0.31; appendicolith, 0.75 vs. 0.5; perforated appendicitis, 0.5 vs 0.42.ConclusionsThis educational video dataset may be used to train sonologist-physicians in ED PoCUS scanning for normal appendix and appendicitis in children. Sonologist experience affected interobserver agreement with respect to visualization of entire normal appendix and appendicitis.

Point of Care Ultrasound Guided Management of Lateral Ankle Sprains: A Case Series.

Lateral ankle sprain (LAS) is a common injury with incidence rates reported at 7.2 per 1000 person-years. Physical examination strategies provide limited information to guide rehabilitation that can maximize clinical outcomes. Early and accurate diagnostic information using ultrasound imaging enables individualized care and the ability to monitor healing along with its response to activity and rehabilitation. The purpose of this study was to describe and observe the outcomes associated with Point of Care Ultrasound (POCUS) guided early management of acute and sub-acute lateral ankle sprains. Case series. Individuals with a LAS within the prior 28 days underwent a clinical evaluation to include a POCUS exam to assess ligamentous integrity. Objective and POCUS findings were integrated to classify each LAS into one of four categories. Each grade of ankle sprain corresponded to levels of bracing for the protection of injured structures with each patient receiving physical therapy care based on rehabilitation guidelines. Participants completed the Foot and Ankle Ability Measure (FAAM) activities of daily living and Sports subscale, the Foot and Ankle Outcome Score (FAOS), Patient Reported Outcomes Measurement Information Systems Global Health, Tampa Scale of Kinesiophobia (TSK-11), Cumberland Ankle Instability Tool (CAIT), and the Numeric Pain Rating Scale as well as the Ankle Lunge Test and Figure 8 measurements at baseline, 4 weeks, 8 weeks and 12 weeks post enrollment. The FAAM Sport subscale, all FAOS subscales, and the TSK-11 were also collected at 24 weeks while the CAIT was collected at baseline and 24 weeks. Fourteen participants were enrolled with 11 participants completing all data collection. FAAM Sport scores significantly improved at 4, 8, 12 and 24 weeks. All components of the FAOS significantly increased except for Sport scores at four weeks and Quality of Life scores at four and eight weeks. POCUS guided early management and ligamentous protection of LASs resulted in significant short and long-term improvement in function and return to sporting activity. This case series highlights the feasibility of using ultrasound imaging to assess the severity of ligamentous injury and align bracing strategies for ligamentous protection. The observations from this case series suggest that functional bracing strategies focused on ligamentous protection to promote healing and reduce re-injury rates does not delay improvement in functional outcomes. Level IV, Case Series.

Artificial Intelligence (AI) Applications for Point of Care Ultrasound (POCUS) in Low-Resource Settings: A Scoping Review.

Advancements in artificial intelligence (AI) for point-of-care ultrasound (POCUS) have ushered in new possibilities for medical diagnostics in low-resource settings. This review explores the current landscape of AI applications in POCUS across these environments, analyzing studies sourced from three databases-SCOPUS, PUBMED, and Google Scholars. Initially, 1196 records were identified, of which 1167 articles were excluded after a two-stage screening, leaving 29 unique studies for review. The majority of studies focused on deep learning algorithms to facilitate POCUS operations and interpretation in resource-constrained settings. Various types of low-resource settings were targeted, with a significant emphasis on low- and middle-income countries (LMICs), rural/remote areas, and emergency contexts. Notable limitations identified include challenges in generalizability, dataset availability, regional disparities in research, patient compliance, and ethical considerations. Additionally, the lack of standardization in POCUS devices, protocols, and algorithms emerged as a significant barrier to AI implementation. The diversity of POCUS AI applications in different domains (e.g., lung, hip, heart, etc.) illustrates the challenges of having to tailor to the specific needs of each application. By separating out the analysis by application area, researchers will better understand the distinct impacts and limitations of AI, aligning research and development efforts with the unique characteristics of each clinical condition. Despite these challenges, POCUS AI systems show promise in bridging gaps in healthcare delivery by aiding clinicians in low-resource settings. Future research endeavors should prioritize addressing the gaps identified in this review to enhance the feasibility and effectiveness of POCUS AI applications to improve healthcare outcomes in resource-constrained environments.