Lung Ultrasound Score in COVID-19 Patients Correlates with PO2/FiO2, Intubation Rates, and Mortality.

Introduction: The point-of-care lung ultrasound (LUS) score has been used in coronavirus 2019 (COVID-19) patients for diagnosis and risk stratification, due to excellent sensitivity and infection control concerns. We studied the ratio of partial pressure of oxygen in arterial blood to the fraction of inspiratory oxygen concentration (PO2/FiO2), intubation rates, and mortality correlation to the LUS score. Methods: We conducted a systematic review using PRISMA guidelines. Included were articles published from December 1, 2019-November 30, 2021 using LUS in adult COVID-19 patients in the intensive care unit or the emergency department. Excluded were studies on animals and on pediatric and pregnant patients. We assessed bias using QUADAS-2. Outcomes were LUS score and correlation to PO2/FiO2, intubation, and mortality rates. Random effects model pooled the meta-analysis results. Results: We reviewed 27 of 5,267 studies identified. Of the 27 studies, seven were included in the intubation outcome, six in the correlation to PO2/FiO2 outcome, and six in the mortality outcome. Heterogeneity was found in ultrasound protocols and outcomes. In the pooled results of 267 patients, LUS score was found to have a strong negative correlation to PO2/FiO2 with a correlation coefficient of -0.69 (95% confidence interval [CI] -0.75, -0.62). In pooled results, 273 intubated patients had a mean LUS score that was 6.95 points higher (95% CI 4.58-9.31) than that of 379 non-intubated patients. In the mortality outcome, 385 survivors had a mean LUS score that was 4.61 points lower (95% CI 3.64-5.58) than that of 181 non-survivors. There was significant heterogeneity between the studies as measured by the I2 and Cochran Q test. Conclusion: A higher LUS score was strongly correlated with a decreasing PO2/FiO2 in COVID-19 pneumonia patients. The LUS score was significantly higher in intubated vs non-intubated patients with COVID-19. The LUS score was significantly lower in critically ill patients with COVID-19 pneumonia that survive.

A brief review of diagnostic properties of point-of-care ultrasound for adult bowel intussusception: Making the case for ultrasound.

Undifferentiated abdominal pain in adults is a common chief complaint in acute care clinics and emergency departments worldwide, representing up to 10% of visits to emergency departments. Many patients have a non-specific presentation and an initial workup with labwork, urine analysis or X-ray might not reveal a specific diagnosis. Although bowel intussusception is a primarily pediatric disease, adult intussusception is a recognized but rare cause of bowel obstruction often requiring surgical intervention. However, recent data from advanced multi-detector computed tomography imaging shows that milder or recurring cases in adults have been underrecognized. Multi-detector computed tomography is still the imaging gold standard for detecting intussusception in adults, but new data showed that sonographers with basic training using the point-of-care ultrasound approach have a reasonable accuracy in detecting this pathology. As the point-of-care ultrasound for undifferentiated abdominal pain is an emerging core skill in the acute care setting, knowledge of sonographic signs of intestinal intussusception should be included in the skill set of physicians. Sonographic findings in adults mimic pediatric cases, but different location patterns and higher malignancy rates exist in adults. In this manuscript, we will review the current literature on adult intussusception and summarize key knowledge of intestinal intussusception in adults. We will present four adult patients diagnosed with different types of adult acute bowel intussusception using the point-of-care ultrasound and describe a focused scanning approach with typical sonographic findings.

A Low-Cost Ultrasound Phantom for Peritonsillar Abscess Drainage Training.

BACKGROUND: Peritonsillar abscesses (PTAs) are encountered routinely in clinical practice. Ultrasound-guided aspiration has been proven both safe and effective in treating this condition. However, to date, there are no easily produced, low-cost models that enable the practice of point-of-care ultrasound-guided PTA aspiration and PTA diagnosis. OBJECTIVES: The objective was to create a low-cost, easy-to-produce, ultrasound phantom to train emergency physicians on ultrasound-guided PTA drainage. METHODS: We improved on previous work with ultrasound phantoms by creating a refillable phantom that approximates the oral cavity. This enabled learners to gain the manual dexterity necessary to operate an intraoral ultrasound probe while also aspirating a PTA. RESULTS: We have created a low-cost ultrasound phantom that is amenable to repeated ultrasound-guided aspirations for the purpose of training both resident- and attending-level physicians. CONCLUSION: With minimal lead time and readily available equipment, we successfully created a low-cost ultrasound phantom for the purpose of PTA identification and drainage.

Emergency Ocular Ultrasound - Common Traumatic and Non-Traumatic Emergencies Diagnosed with Bedside Ultrasound.

Point-of-care ocular ultrasound (POCOUS) in the ambulatory and critical care setting has become an invaluable diagnostic tool for patients presenting with traumatic or atraumatic vision and ocular complaints. Sonographic bedside evaluation is intuitive and easy to perform and can accurately diagnose a variety of pathologies. These include detachment or hemorrhage of the retina or vitreous, lens dislocation, retrobulbar hematoma or air, as well as ocular foreign bodies, infections, tumors, and increased optic nerve sheath diameter that can be assessed in the setting of suspected increased intracranial pressure. The ocular anatomy is easy to visualize with sonography, as the eye is a superficial structure filled with fluid. Over the last two decades, a large number of scientific publications have documented that POCOUS in emergent or critical care settings is an accurate diagnostic tool and expands and improves emergency diagnosis and management. This article will review POCOUS exam techniques as well as normal sonographic findings and common pathologies.

Bedside sonography for the diagnosis of esophageal food impaction.

BACKGROUND: Esophageal foreign body (EFB) and impaction are common gastrointestinal emergencies. Detection with standard imaging can be challenging. Computed tomography is a commonly used non-invasive imaging modality, but is not 100% sensitive and not always feasible. Sensitivity of plain film x-ray varies widely and the addition of a barium swallow can obscure evaluation by subsequent esophagogastroduodenoscopy (EGD). Use of emergency ultrasound (EUS) for detection of EFB in adults has not been previously studied. OBJECTIVE: To evaluate the role of EUS in detection of EFB and to characterize sonographic findings. METHODS: A case control series of five patients with clinical suspicion of EFB underwent EUS, and findings were compared to five healthy controls. Patients were evaluated for persistent air-fluid levels after swallowing, esophageal dilatation, and visualization of EFB. RESULTS: All patients with suspected EFB had esophageal dilatation (17.5mm vs 9.3mm in healthy controls; p=0.0011) and persistent air-fluid levels after swallowing. EFB was visualized on EUS in 60% of patients. All patients had EFB confirmed on EGD except one, who vomited a significant food bolus during EUS and prior to EGD. CONCLUSION: In patients with suspected EFB, point-of-care ultrasound may identify those with impaction. Suggestive findings include cervical esophageal dilatation and persistent intraluminal air-fluid levels after swallowing. EUS is a rapid, convenient test with the potential to expedite definitive management while decreasing cost and radiation exposure in this patient population.

A systematic review of burn injuries in low- and middle-income countries: Epidemiology in the WHO-defined African Region.

INTRODUCTION: According to the World Health Organization (WHO), burns result in the loss of approximately 18 million disability adjusted life years (DALYs) and more than 250,000 deaths each year, more than 90% of which are in low- and middle-income countries (LMICs). The epidemiology of these injuries, especially in the WHO-defined African Region, has yet to be adequately defined. METHODS: We performed a systematic review of the literature regarding the epidemiology of thermal, chemical, and electrical burns in the WHO-defined African Region. All articles indexed in PubMed, EMBASE, Web of Science, Global Health, and the Cochrane Library databases as of October 2015 were included. RESULTS: The search resulted in 12,568 potential abstracts. Through multiple rounds of screening using criteria determined a priori, 81 manuscripts with hospital-based epidemiology as well as eleven manuscripts that included population-based epidemiology were identified. Although the studies varied in methodology, several trends were noted: young children appear to be at most risk; most individuals were burned at home; and hot liquids and flame are the most common aetiologies. DISCUSSION: While more population-based research is essential to identifying specific risk factors for targeted prevention strategies, our review identifies consistent trends for initial efforts at eliminating these often devastating and avoidable injuries.

INTRODUCTION: Selon l'Organisation mondiale de la Santé (OMS), les brûlures résultent sur la perte d'environ 18 millions d'années de vie corrigées du facteur d'invalidité (AVCI) et sur plus de 250 000 décès chaque année, plus de 90% se produisant dans les pays à revenu faible et intermédiaire (PRFI). L'épidémiologie de ces blessures, notamment dans la région africaine de l'OMS, reste encore à définir adéquatement. MÉTHODES: Nous avons procédé à une revue systématique de la documentation relative à l'épidémiologie des brûlures thermiques, chimiques et électriques dans la région africaine de l'OMS. Tous les articles indexés dans les bases de données de PubMed, EMBASE, Web of Science, Global Health et de la Cochrane Library à compter d'octobre 2015 ont été inclus. RÉSULTATS: La recherche a produit 12 568 résumés potentiels. Par le biais de plusieurs séries de tri à l'aide de critères déterminés a priori, 81 manuscripts fournissant une épidémiologie dans le cadre hospitalier ainsi que 11 manuscripts incluant une épidémiologie basée sur la population ont été identifiés. Bien que les études variaient dans leur méthodologie, plusieurs tendances ont été observées: les jeunes enfants semblent constituer la population la plus à risque; la plupart des individus étaient brûlés à la maison; et les liquides chauds et les flammes constituent les étiologies les plus courantes. DISCUSSION: Si des études davantage basées sur la population sont essentielles pour identifier les facteurs de risque spécifiques en vue de stratégies de prévention ciblées, notre revue identifie des tendances constantes pour les efforts initiaux visant à éliminer ces blessures souvent dévastatrices et évitables.

Prevention of burn injuries in low- and middle-income countries: A systematic review.

According to the World Health Organization (WHO), burns result in more than 250,000 deaths and the loss of approximately 18 million disability adjusted life years (DALYs), more than 90% of which occur in low- and middle-income countries (LMICs), annually. This type of serious injury - one that is particularly devastating in LMICs - is preventable. To further explore the effectiveness of burn prevention strategies in LMICs, we performed a systematic review of the literature indexed in PubMed, EMBASE, Web of Science, Global Health, and the Cochrane Library databases as of October 2015. Our search resulted in 12,568 potential abstracts. Through multiple rounds of screening using criteria determined a priori, 11 manuscripts were identified for inclusion. The majority of these studies demonstrate reductions in hazardous behaviors, incidence of burns, morbidity, and mortality using educational programs, but also highlight other initiatives, such as media campaigns, as effective strategies. Given that only 11 manuscripts are highlighted in this review, it is evident that original research is lacking. Further studies of preventative efforts tailored to populations in LMICs are needed. It is also essential that these studies be founded in population-based epidemiology and use meaningful end points, such as reductions in incidence, morbidity, and mortality.