Total body weight estimation by 3D camera systems: Potential high-tech solutions for emergency medicine applications? A scoping review.

Background: Weight estimation is required in adult patients when weight-based medication must be administered during emergency care, as measuring weight is often not possible. Inaccurate estimations may lead to inaccurate drug dosing, which may cause patient harm. High-tech 3D camera systems driven by artificial intelligence might be the solution to this problem. The aim of this review was to describe and evaluate the published literature on 3D camera weight estimation methods. Methods: A systematic literature search was performed for articles that studied the use of 3D camera systems for weight estimation in adults. Data on the study characteristics, the quality of the studies, the 3D camera methods evaluated, and the accuracy of the systems were extracted and evaluated. Results: A total of 14 studies were included, published from 2012 to 2024. Most studies used Microsoft Kinect cameras, with various analytical approaches to weight estimation. The 3D camera systems often achieved a P10 of 90% (90% of estimates within 10% of actual weight), with all systems exceeding a P10 of 78%. The studies highlighted a significant potential for 3D camera systems to be suitable for use in emergency care. Conclusion: The 3D camera systems offer a promising method for weight estimation in emergency settings, potentially improving drug dosing accuracy and patient safety. Weight estimates were satisfactorily accurate, often exceeding the reported accuracy of existing weight estimation methods. Importantly, 3D camera systems possess characteristics that could make them very appropriate for use during emergency care. Future research should focus on developing and validating this methodology in larger studies with true external and clinical validation.

Low Incidence of Delayed Intracranial Hemorrhage in Geriatric Emergency Department Patients on Preinjury Anticoagulation Presenting with Blunt Head Trauma.

BACKGROUND: Delayed intracranial hemorrhage (ICH) after head injury in older patients taking anticoagulants has been reported to be as high as 7.2%. Other studies suggest much lower rates. Its incidence and clinical management are controversial, with some recommending observation and repeat head imaging at 24 h. OBJECTIVE: Our study aims to assess the incidence of delayed ICH in geriatric Emergency Department (ED) head trauma patients prescribed preinjury anticoagulants. METHODS: We performed a prospective cohort study conducted at two hospital EDs from August 2019 to July 2020. All patients aged 65 years or older with acute head injury were eligible for enrollment. We conducted telephone follow-up at 14 and 60 days, and a chart review at 90 days. The primary study outcome was incidence of delayed ICH, which was defined as an initial negative head computed tomography scan followed by subsequent ICH believed to be caused by the initial traumatic event. We compared the rates of delayed ICH between patient cohorts based on anticoagulant use. RESULTS: There were 3425 patients enrolled: 2300 (67.2%) were not on an anticoagulant, 249 (7%) were on preinjury warfarin, 780 (22.7%) were on a direct-acting oral anticoagulant, and 96 (2.8%) were on enoxaparin or heparin. The median age was 82 years (interquartile range 65-107), the majority were female (55.2%), and almost all were Caucasian (84.3%). An acute ICH was identified in 229 of 3425 (6.7%, 95% confidence interval 6-8%) and delayed ICH in 13 (0.4%, 95% confidence interval 0.2-0.6%). There were no differences in rates of delayed ICH between those who had been prescribed anticoagulants vs. those who had not (p = 0.45). CONCLUSIONS: The incidence of delayed ICH is very low in older ED head trauma patients on prescribed pre-injury anticoagulants. Our data have important clinical implications for the management of blunt head trauma among older ED patients on anticoagulants.

Alcohol use is associated with intracranial hemorrhage in older emergency department head trauma patients.

Objectives: Falls are common in adults aged 65 years and older and are the leading cause of traumatic brain injuries in this age group. Alcohol use may increase the risk of falls as well as the severity of resultant injuries. The aim of this study was to examine the association between self-reported alcohol use and the prevalence of intracranial hemorrhage (ICH) in this patient group. Methods: This was a secondary analysis of the Geriatric Head Trauma Short Term Outcomes Project (GREAT STOP), a study of older adults with blunt head trauma from a fall. We determined the characteristics of every fall event, including patient demographics and medical history, and clinical signs and symptoms related to head trauma. Self-reported alcohol use was categorized as none, occasionally, weekly, or daily. We defined ICH as any acute ICH detected by computed tomography scan. We evaluated the association between alcohol use frequency and ICH, adjusted for patient factors and head injury risk factors. Results: Of 3128 study participants, 18.2% (n = 567) reported alcohol use: 10.3% with occasional use, 1.9% with weekly use, and 6.0% with daily use. ICH was more common in patients who used alcohol (20.5%, 22.0%, and 25.1% for occasional, weekly, and daily alcohol users, respectively, vs. 12.0% for non-users, p < 0.001). The frequency of alcohol use was independently associated with ICH, adjusted for patient and head injury risk factors. The adjusted odds ratios (with 95% confidence intervals) for occasional, weekly, and daily alcohol users increased from 2.0 (1.5‒2.8) to 2.1 (1.1‒4.1) and 2.5 (1.7‒3.6), respectively, and showed the characteristics of dose‒response effect. Conclusions: Alcohol use in older adult emergency department patients with head trauma is relatively common. Self-reported alcohol use appears to be associated with a higher risk of ICH in a dose-dependent fashion. Fall prevention strategies may need to consider alcohol mitigation as a modifiable risk factor.

The Florida Geriatric Head Trauma CT Clinical Decision Rule.

BACKGROUND: Several clinical decision rules have been devised to guide head computed tomography (CT) use in patients with minor head injuries, but none have been validated in patients 65 years or older. We aimed to derive and validate a head injury clinical decision rule for older adults. METHODS: We conducted a secondary analysis of an existing dataset of consecutive emergency department (ED) patients >65 years old with blunt head trauma. The main predictive outcomes were significant intracranial injury and Need for Neurosurgical Intervention on CT. The secondary outcomes also considered in the model development and validation were All Injuries and All Intracranial Injuries. Predictor variables were identified using multiple variable logistic regression, and clinical decision rule models were developed in a split-sample derivation cohort and then tested in an independent validation cohort. RESULTS: Of 5776 patients, 233 (4.0%) had significant intracranial injury and an additional 104 (1.8%) met CT criteria for Need for Neurosurgical Intervention. The best performing model, the Florida Geriatric Head Trauma CT Clinical Decision Rule, assigns points based on several clinical variables. If the points totaled 25 or more, a CT scan is indicated. The included predictors were arrival via Emergency Medical Services (+30 points), Glasgow Coma Scale (GCS) <15 (+20 points), GCS <14 (+50 points), antiplatelet medications (+17 points), loss of consciousness (+16 points), signs of basilar skull fracture (+50 points), and headache (+20 points). Utilizing this clinical decision rule in the validation cohort, a point total ≥25 had a sensitivity and specificity of 100.0% (95% CI: 96.0-100) and 12.3% (95% CI: 10.9-13.8), respectively, for significant intracranial injury and Need for Neurosurgical Intervention. CONCLUSIONS: The Florida Geriatric Head Trauma CT Clinical Decision Rule has the potential to reduce unnecessary CT scans in older adults, without compromising safe emergency medicine practice.

ACR Appropriateness Criteria® Dizziness and Ataxia: 2023 Update.

Diagnostic evaluation of a patient with dizziness or vertigo is complicated by a lack of standardized nomenclature, significant overlap in symptom descriptions, and the subjective nature of the patient's symptoms. Although dizziness is an imprecise term often used by patients to describe a feeling of being off-balance, in many cases dizziness can be subcategorized based on symptomatology as vertigo (false sense of motion or spinning), disequilibrium (imbalance with gait instability), presyncope (nearly fainting or blacking out), or lightheadedness (nonspecific). As such, current diagnostic paradigms focus on timing, triggers, and associated symptoms rather than subjective descriptions of dizziness type. Regardless, these factors complicate the selection of appropriate diagnostic imaging in patients presenting with dizziness or vertigo. This document serves to aid providers in this selection by using a framework of definable clinical variants. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where peer reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.

Educational concepts: A longitudinal interleaved curriculum for emergency medicine residency training.

Traditionally, emergency medicine (EM) residency programs teach non-adult emergency department activities (such as pediatric EM, point-of-care ultrasound [PoCUS], emergency medical services, and others) in a block format. In this way, a resident may have a 1-month pediatric EM rotation and then not have any further pediatric EM exposure until their next pediatric rotation 6‒9 months later. Furthermore, some rotations are only allotted for 1-month during the entire residency. A first-year EM resident may have their only formal PoCUS rotation early in the first year of training when their overall skills are developing, and their level of understanding and retention of information may not be optimal at that juncture of their residency training. This is far from ideal from an educational perspective. Learning scientists have now suggested that a longitudinal interleaved curriculum has substantial advantages over the traditional block format. This curriculum allows for a "spaced retrieval" practice that enhances retention of material and develops thinking processes that are important in clinical practice. The increased continuity of clinical experience has been shown to improve educational outcome and learner satisfaction. We developed a novel longitudinal interleaved curriculum for our EM resident trainees. This curriculum encompasses the entire 3 years of residency training and has the goals of increasing EM knowledge and clinical skills and being excellent preparation for board certification examinations. This concept has clear educational benefits. While adapting an existing medical training program would be challenging, a longitudinal curriculum could be phased in to replace a traditional EM curriculum.

Exogenous Peptide Injection Causing Medical Thigh Compartment Syndrome.

BACKGROUND: Acute compartment syndrome can be caused by any condition that increases the pressure of an intracompartmental muscular space, resulting in ischemia, which is a limb-threatening emergency. This case report is the first known documented example of an exogenously injected peptide causing compartment syndrome. The use of natural supplements and holistic therapies is on the rise, specifically, peptide injections. It is important to obtain the history of use and routes of administration of these substances. CASE REPORT: We present a case of a 43-year-old man who presented to the Emergency Department with worsening thigh pain. The patient had injected a "peptide cocktail" into his thigh 3 days prior. Physical examination revealed trace pitting edema of the left leg with moderate muscle spasm and tenderness of the medial aspect of the distal thigh with associated numbness along the medial aspect of the knee. Point-of-care ultrasound detected intramuscular edema and free fluid in the leg. He was found to have acute compartment syndrome of the thigh secondary to the peptide cocktail injection, causing a large hematoma posterior to the adductor magnus. The patient required fasciotomy and hematoma evacuation. He ultimately left against medical advice during his hospitalization. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: In an age when many patients look for supplements to aid with weight loss and muscle growth, it is essential to be aware of peptide injection therapies and the potential complication of compartment syndrome.

The accuracy of total body weight estimation in adults - A systematic review and meta-analysis.

BACKGROUND: Weight estimation is required in adult patients when weight-based medication must be administered during emergency care, as measuring weight is often impossible. Inaccurate estimations may lead to inaccurate drug doses, which may cause patient harm. Little is known about the relative accuracy of different methods of weight estimation that could be used during resuscitative care. The aim of this study was to evaluate the performance and suitability of existing weight estimation methods for use in adult emergency care. METHODS: A systematic literature search was performed for suitable articles that studied the accuracy of weight estimation systems in adults. The study characteristics, the quality of the studies, the weight estimation methods evaluated, the accuracy data, and any information on the ease-of-use of the method were extracted and evaluated. RESULTS: A total of 95 studies were included, in which 27 different methods of total body weight estimation were described, with 42 studies included in the meta-analysis. The most accurate methods, determined from the pooled estimates of accuracy (the percentage of estimates within 10% of true weight, with 95% confidence intervals) were 3-D camera estimates (88.8% (85.8 to 91.8%)), patient self-estimates (88.7% (87.7 to 89.7%)), the Lorenz method (77.5% (76.4 to 78.6%)) and family estimates (75.0% (71.5 to 78.6%)). However, no method was without significant potential limitations to use during emergency care. CONCLUSION: Patient self-estimations of weight were generally very accurate and should be the method of choice during emergency care, when possible. However, since alternative estimation methods must be available when confused, or otherwise incapacitated, patients are unable to provide an estimate, alternative strategies of weight estimation should also be available.

Lack of patient and primary care physician follow-up in geriatric emergency department patients with head trauma from a fall.

STUDY OBJECTIVE: Falls are the leading cause of injuries in the US for older adults. Follow-up after an ED-related fall visit is essential to initiate preventive strategies in these patients who are at very high risk for recurrent falls. It is currently unclear how frequently follow-up occurs and whether preventive strategies are implemented. Our objective is to determine the rate of follow-up by older adults who sustain a fall related head injury resulting in an ED visit, the rate and type of risk assessment and adoption of preventive strategies. METHODS: This 1-year prospective observational study was conducted at two South Florida hospitals. All older ED patients with an acute head injury due to a fall were identified. Telephone surveys were conducted 14 days after ED presentation asking about PCP follow-up and adoption of fall prevention strategies. Clinical and demographic characteristics were compared between patients with and without follow up. RESULTS: Of 4951 patients with a head injury from a fall, 1527 met inclusion criteria. 905 reported follow-up with their PCP. Of these, 72% reported receiving a fall assessment and 56% adopted a fall prevention strategy. Participants with PCP follow-up were significantly more likely to have a history of cancer or hypertension. CONCLUSION: Only 60% of ED patients with fall-related head injury follow-up with their PCP. Further, 72% received a fall assessment and only 56% adopted a fall prevention strategy. These data indicate an urgent need to promote PCP fall assessment and adoption of prevention strategies in these patients.

Repeat Fall Risk in Geriatric Patients After Fall-Induced Head Trauma.

Introduction There are many known risk factors for falls, with poor health and physiologic decreases in function as the major contributors to fall risk in older adults. However, risk factors for repeat falls after initial ED discharge are not well-described. This study seeks to prospectively investigate risk factors for short-term repeat falls in geriatric ED patients with fall-related head trauma who do not require hospital admission. Methods This is a prospective study of patients aged 65 years and older with fall-related head trauma who presented to the EDs of two community level I trauma centers. Patients were excluded for intracerebral hemorrhage, admission during initial ED visit, or death in the hospital. Patients were followed for 14 days. Patient characteristics, repeat ED visits, and reason for returns were noted. Results About 2,143 patients were identified as meeting the inclusion criteria. Within 14 days of the initial presentation, 14.1% of patients returned to the ED, with 8.3% presenting with a complaint related to the initial trauma and 2.6% with a new injury. Patients with comorbidities of dementia (OR 3.02, 95% CI, 1.72-5.33, p<0.001), stroke (OR 2.12, 95% CI, 1.05-4.27, p=0.031), and smoking (OR 4.27, 95% CI,1.76-10.37, p<0.001) were significantly more likely to sustain a new injury leading to a repeat ED visit within 14 days. Conclusions After an ED visit due to a fall, over one in 10 patients will re-present to the ED due to a new injury or sequelae from the initial fall. In the immediate period after a fall, enhanced outpatient follow-up or risk mitigation strategies should be considered to lessen return visits and decrease morbidity.

Computed Tomography Imaging of Geriatric Patients with Uncertain Head Trauma.

BACKGROUND: Although clinical decision rules exist for patients with head injuries, no tool assesses patients with unknown trauma events. Patients with uncertain trauma may have unnecessary brain imaging. OBJECTIVE: This study evaluated risk factors and outcomes of geriatric patients with uncertain head injury. METHODS: This prospective cohort study included geriatric patients with definite or uncertain head injury presenting to two emergency departments (EDs). Patients were grouped as definite or uncertain head trauma based on history and physical examination. Outcomes were intracranial hemorrhage (ICH) on head computed tomography (CT), need for neurosurgical intervention, and mortality. Risk factors assessed included gender, alcohol use, tobacco use, history of dementia, anticoagulant use, antiplatelet use, and Glasgow Coma Scale (GCS) score < 15. RESULTS: We enrolled 2905 patients with definite head trauma and 950 with uncertain head trauma. Rates of acute ICH (10.7% vs. 1.5%; odds ratio [OR] 8.02; 95% confidence interval [CI] 4.67-13.76), delayed ICH (0.7% vs. 0.1%; OR 6.58; 95% CI 4.67-13.76), and neurosurgical intervention (1.2% vs. 0.3%; OR 3.74; 95% CI 1.15-12.20) were all higher in definite vs. uncertain head injuries. There were no differences in mortality. Patients with definite trauma had higher rates of ICH with male gender (OR 1.58; 95% CI 1.24-1.99), alcohol use (OR 1.62; 95% CI 1.25-2.09), antiplatelet use (OR 1.84; 95% CI 1.46-2.31), and GCS score < 15 (OR 3.24; 95% CI 2.54-4.13). Patients with uncertain trauma had no characteristics associated with increased ICH. CONCLUSIONS: Although ICH rates among patients with uncertain head trauma was eight times lower than those with definite head trauma, the risk of ICH is high enough to warrant CT imaging of all geriatric patients with uncertain head injury.

Head computerized tomography in emergency department evaluation of the geriatric patient with generalized weakness.

Objective: Weakness in older emergency department (ED) patients presents a broad differential. Evaluation of these patients can be challenging, and the efficacy of head computed tomography (CT) imaging is unclear. This study assesses the usefulness of head CT as a diagnostic study of acute generalized weakness in older ED patients. Methods: This retrospective review of patients aged 65 years and older presenting to 2 community EDs included patients with a chief complaint of generalized weakness who received a head CT. Patients presenting with a focal neurologic complaint, altered mental status, or trauma were excluded. Variables evaluated included additional triage chief complaints, dementia diagnosis, and deficits on physical examination. Primary outcome was acute intracranial finding on head CT. Secondary outcomes included neurology consultation, neurosurgical consultation, and neurosurgical intervention. Results: Of 247 patients, 3.2% had an acute intracranial abnormality on head CT. Emergent consultations for neurology and neurosurgery occurred for 1.6% and 2.4% of patients, respectively. None required neurosurgical intervention. Patients with objective weakness or focal neurologic deficits on physical examination were more likely to have acute findings on head CT (8.5% vs. 2.0%, odds ratio 4.56, confidence interval 1.10-18.95). Additional characteristics did not predict acute intracranial abnormality or need for emergent consultation. Conclusion: Few patients with generalized weakness evaluated with head CT had acutely abnormal intracranial findings. Patients with objective weakness or neurologic deficits were more likely to have acute abnormalities. Although head CT is frequently used to evaluate geriatric weakness, its utility is low, especially in patients with normal physical examinations.

ACR Appropriateness Criteria® Right Upper Quadrant Pain: 2022 Update.

Acute right upper quadrant pain is one of the most common presenting symptoms in hospital emergency departments, as well as outpatient settings. Although gallstone-related acute cholecystitis is a leading consideration in diagnosis, a myriad of extrabiliary sources including hepatic, pancreatic, gastroduodenal, and musculoskeletal should also be considered. This document focuses on the diagnostic accuracy of imaging studies performed specifically to evaluate acute right upper quadrant pain, with biliary etiologies including acute cholecystitis and its complications being the most common. An additional consideration of extrabiliary sources such as acute pancreatitis, peptic ulcer disease, ascending cholangitis, liver abscess, hepatitis, and painful liver neoplasms remain a diagnostic consideration in the right clinical setting. The use of radiographs, ultrasound, nuclear medicine, CT, and MRI for these indications are discussed. The ACR Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.

ACR Appropriateness Criteria® Headache: 2022 Update.

Headache is an ancient problem plaguing a large proportion of the population. At present, headache disorders rank third among the global causes of disability, accounting for over $78 billion per year in direct and indirect costs in the United States. Given the prevalence of headache and the wide range of possible etiologies, the goal of this document is to help clarify the most appropriate initial imaging guidelines for headache for eight clinical scenarios/variants, which range from acute onset, life-threatening etiologies to chronic benign scenarios. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where peer reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.