Is it Smoke and Mirrors? Detection of Inferior Vena Cava Thrombus by Focused Cardiac Ultrasound.

ABSTRACT: Inferior vena cava assessment is a standard component of focused cardiac ultrasound, traditionally used to qualify intravascular volume status. In this case series, we demonstrate that pediatric focused cardiac ultrasound can also diagnose inferior vena cava thrombi and masses, while distinguishing them from a potentially benign smoke-like artifact.

A quality improvement approach to integrating social determinants of health objectives into pediatric simulation.

Background: Health disparities and the unequal distribution of social resources impact health outcomes. By considering social determinants of health (SDH), clinicians can provide holistic and equitable care. However, barriers such as lack of time or understanding of the relevance of SDH to patient care prevent providers from addressing SDH. Simulation curricula may improve learners' ability to address SDH in practice. Objectives: The primary objective was to increase the percentage of pediatric emergency simulations that included SDH objectives from 5% to 50% in 12 months at one institution. As a balancing metric, we examined whether trainees approved the incorporation of SDH objectives. Methods: Using the Model for Improvement approach, we conducted interviews of residents and simulation facilitators to identify challenges to integrating SDH objectives into the simulation curriculum. Review of interviews and visual representation of the system helped identify key drivers in the process. A team of simulation leaders, residents, and fellows met regularly to develop simulation cases with embedded SDH objectives. Using a plan, do, study, act approach, we tested, refined, and implemented interventions including engaging residency program and SDH leadership, piloting cases, providing facilitators concise resources, inviting SDH-specific experts to co-debrief, and eliciting and incorporating learner and facilitator feedback to improve cases. SDH topics include homelessness, undocumented status, and racism. Results: Prior to the start of the quality improvement work, SDH were rarely incorporated into emergency simulations for pediatric residents. A p-chart was used to track the percentage of monthly cases that incorporated SDH topics. During the study period, the percentage of simulations including SDH topics increased to 57% per month. Most trainees (94%) welcomed incorporating SDH objectives. Conclusions: Using the Model for Improvement, we incorporated SDH objectives into pediatric resident emergency simulations. Next steps include examining effectiveness of the curriculum, dissemination to additional learners, and examining sustainability in practice.

Agreement With Pediatric Suprapatellar Bursa Effusion Assessments by Point-of-Care Ultrasound After Remote Training.

BACKGROUND: The ease of instruction for point-of-care ultrasound (POCUS) to detect suprapatellar bursa (SPB) effusions in pediatric patients is unknown. Considering in person limitations because of the coronavirus pandemic, strategies for POCUS education by remote learning are necessary. METHODS: We crafted a 90-minute didactic training that was presented via a remote learning format. The main outcome of interest was the interobserver reliability of SPB effusion assessment by novice sonologists compared with POCUS faculty. Novice sonologists were pediatric emergency medicine (PEM) fellows. Pediatric emergency medicine fellows interpreted longitudinal SPB examinations obtained in our pediatric emergency department from July 2013 to June 2020. Assessments were performed 2 months after the remote training. Pediatric emergency medicine fellows had a limited experience performing these musculoskeletal scans and were blinded to POCUS faculty and each other's assessments. Interobserver reliability was assessed with Cohen κ coefficient. Second, we calculated test characteristics of knee radiography compared with PEM POCUS faculty determination of SPB effusion by ultrasound. We further explored how effusion size measured by POCUS impacted the diagnosis by knee radiography. A receiver operator characteristic curve of knee radiography diagnosis of SPB effusion was created using the maximal height of SPB effusion by POCUS as the predictor variable. RESULTS: A total of 116 SPB scans in 71 patients were assessed. From this group, 70 scans were of affected knees and 46 scans were of contralateral, asymptomatic knees. The mean age of patients was 10 years and 46% were girl. The prevalence of SPB effusions was 42%. The κ coefficients between the 3 novice sonologists and POCUS faculty were 0.75 (0.62-0.87), 0.77 (0.65-0.89), and 0.83 (0.72-0.93) with 88%, 89%, and 91% agreement. Knee radiography exhibited an overall sensitivity of 65% (95% confidence interval [CI], 46-79%), specificity of 84% (95% CI, 60-97%), negative predictive value of 55% (95% CI, 43-66%), and positive predictive value of 88% (95% CI, 73-96%) to diagnose SPB effusions. The area under the receiver operator characteristic curve was 0.850. With an SPB height cutoff of 4 mm as true positives, radiography had a sensitivity of 81% and a specificity of 83%. CONCLUSIONS: After a remote teleconference didactic session, PEM fellows were able to successfully diagnose SPB effusions using a longitudinal view with substantial interobserver reliability. Knee radiography exhibited limited sensitivity to rule out SPB effusions.

An evidence-based approach to nontraumatic ocular complaints in children.

Children commonly present to emergency departments with eye complaints in the absence of antecedent trauma. Signs and symptoms of ocular disease are often nonspecific. Red, swollen, or painful eyes may represent benign or vision-threatening processes, making recognition and triage challenging for the emergency clinician. This issue reviews the presentations of common nontraumatic ocular complaints and provides evidence-based recommendations for management in the emergency department.

Early graft failure after infrainguinal arterial bypass.

INTRODUCTION: Early graft failure (EGF), defined as failure within 30 days of an index procedure, is a serious complication after infrainguinal arterial bypass. EGF has not been examined by the use of national data since the widespread adoption of percutaneous treatments for arterial occlusive disease. METHODS: We used data from the American College of Surgeons National Surgical Quality Improvement Program. Patients who underwent infrainguinal arterial bypass from 2005 to 2011 were selected from the American College of Surgeons National Surgical Quality Improvement Program database. The frequency of 30-day EGF was determined. Univariate and multivariate analyses evaluated risk factors for EGF. RESULTS: Of 23,468 patients who underwent open infrainguinal arterial bypass, 1,065 (4.5%) had EGF. Patients who had EGF were more likely to have a prolonged duration of stay (34.8% vs 12.0%, P < .001), greater rates of reoperation (82.1% vs 14.3%, P < .001) and increased 30-day mortality (5.1% vs 2.1%, P < .001). The rate of additional complications in patients who experienced EGF was 42.0%, compared with 25.4% in those who did not have EGF (P < .001). Patients who experienced complications in addition to EGF were more likely to have complications after graft failure (69.5% vs 31.3%). In multivariable analysis, EGF was associated with younger age, female sex, black race, obesity, thrombocytosis, increased international normalized ratio, femoral-to-tibial bypass, prosthetic graft, and emergent operation. CONCLUSION: The incidence of EGF after open lower extremity arterial bypass has not increased in an era of increased use of percutaneous techniques. Nevertheless, EGF occurs in almost 5% of patients and is strongly associated with additional complications and mortality. Identifying patients at risk for EGF may facilitate modification of contributing factors. Diminishing the incidence of graft occlusion will lead to decreased morbidity and mortality in this cohort of patients.

Preoperative factors predict mortality after major lower-extremity amputation.

BACKGROUND: The objective was to develop a preoperative mortality risk stratification tool for patients facing major amputation. METHODS: Patients who underwent above-knee (AKA) or below-knee amputation (BKA) from 2005 to 2010 were identified from the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) database. Univariate and multivariate analyses were performed to determine the association of preoperative factors with 30-day mortality. Multivariable models were used to create a computerized prediction tool. RESULTS: Of 9,368 patients, 4,032 underwent AKA and 5,336 BKA. The 30-day mortality rate after AKA was 12.8%, almost double that of BKA (6.5%, P < .001). The complication rate was statistically greater after AKA although numerically similar (28.5% vs 26.6%, P = .020), whereas the rate of reoperation was substantially greater after BKA (22.7% vs 11.7%, P < .001). Preoperative factors that predicted mortality after both procedures included older age, dependent functional status, dialysis, steroid use, preoperative sepsis, delirium, thrombocytopenia, increased international normalized ratio, and azotemia. Prediction tools were developed and validated, and their concordance indices were 0.75 for AKA and 0.81 for BKA, indicating good predictive accuracy. CONCLUSION: Preoperative factors predict mortality after major amputation, and the risk calculator that we have developed may facilitate informed decision-making and provide realistic expectations for surgeons and patients faced with limb-threatening disease.