Use of 816 Consecutive Burn Wound Biopsies to Inform a Histologic Algorithm for Burn Depth Categorization.

Burn experts are only 77% accurate when subjectively assessing burn depth, leaving almost a quarter of patients to undergo unnecessary surgery or conversely suffer a delay in treatment. To aid clinicians in burn depth assessment (BDA), new technologies are being studied with machine learning algorithms calibrated to histologic standards. Our group has iteratively created a theoretical burn biopsy algorithm (BBA) based on histologic analysis, and subsequently informed it with the largest burn wound biopsy repository in the literature. Here, we sought to report that process. This was an IRB-approved, prospective, multicenter study. A BBA was created a priori and refined in an iterative manner. Patients with burn wounds assessed by burn experts as requiring excision and autograft underwent 4 mm biopsies procured every 25 cm2. Serial still photos were obtained at enrollment and at excision intraoperatively. Burn biopsies were histologically assessed for presence/absence of epidermis, papillary dermis, reticular dermis, and proportion of necrotic adnexal structures by a dermatopathologist using H&E with whole slide scanning. First degree and superficial second degree were considered to be burn wounds likely to have healed without surgery, while deep second- and third-degree burns were considered unlikely to heal by 21 days. Biopsy pathology results were correlated with still photos by five burn experts for consensus of final burn depth diagnosis. Sixty-six subjects were enrolled with 117 wounds and 816 biopsies. The BBA was used to categorize subjects' wounds into four categories: 7% of burns were categorized as first degree, 13% as superficial second degree, 43% as deep second degree, and 37% as third degree. Therefore, 20% of burn wounds were incorrectly judged as needing excision and grafting by the clinical team as per the BBA. As H&E is unable to assess the viability of papillary and reticular dermis, with time our team came to appreciate the greater importance of adnexal structure necrosis over dermal appearance in assessing healing potential. Our study demonstrates that a BBA with objective histologic criteria can be used to categorize BDA with clinical misclassification rates consistent with past literature. This study serves as the largest analysis of burn biopsies by modern day burn experts and the first to define histologic parameters for BDA.

Representation Matters: An Assessment of Diversity in Current Major Textbooks on Burn Care.

Ethnic and gender disparities in healthcare have been well described. Increasing attention is paid to representative diversity in the images and educational resources used during medical training. Nearly 40% of the population of the United States identifies as a person of color, and patients of color reflect 41% of the total burn population seen in the United States. Additionally, national data on providers suggest about 5% of the Burn Team should be people of color. A better understanding of the diversity represented by burn-related medical literature could affect the management of patients with diverse backgrounds, as well as recruitment of black, indigenous, and people of color (BIPOC) into this field. The goal of this study is to investigate the representation of diverse skin tones in several leading medical textbooks of burn care. All photographs that contained people were evaluated for the number of people present and the depicted role of the person present. Diversity count was assessed in a binary fashion-was the individual represented a BIPOC? About 2579 total individuals were identified. BIPOC was represented in 363 total images (14%). There were 6 providers of color identified out of a total of 161 (3.7%); 30 providers were women (19%), of whom only 1 was a female provider of color. BIPOC patients and providers are underrepresented in the leading textbooks of burn care. Proper representation must be included in modern educational materials to better prepare providers for a diverse population of burn-injured patients and ensure effective and thoughtful care.

Severe burn injury: Body Mass Index and the Baux score.

OBJECTIVE: The revised Baux score (age total body surface area (TBSA) burned and inhalation injury)) is predictive of mortality in burn patients. Our study objective was to assess whether the addition of body mass index (BMI) to the revised Baux score would be of value. We posited that increasing BMI follows a pattern similar to age and TBSA in the revised Baux score after severe burn injury. METHODS: Patient data from the burn registry was queried for patients admitted between 1/1/2013 to 8/31/2019. Patients 12 years or older with a TBSA of 20% or greater burn were included. Inpatient outcomes were analyzed based on BMI. RESULTS: 56 of 1365 patients met inclusion criteria. Mean age of the study population was 48.25 years and 64.3% of patients were male. Median BMI was 25.8 and median TBSA was 26.5. Inhalation injury was present in 44.6% (25/56) of patients. Median hospital length of stay (LOS) and ICU LOS were 21.5 and 17 days respectively. On bivariate analysis, non-survivors had higher TBSA (41.5% vs 25.5%, p = 0.034), more inhalation injury (83.3%, 10/12 vs 34.8%, 15/43 p = 0.003) and higher complication rates (91.6%, 11/12 vs 59.1 %, 25/43, p = 0.043). Survivors also had higher BMI (28.2 vs 23, p = 0.003) and increased hospital LOS (24 vs 5.5, p = 0.003). Automatic model fit in binary logistic regression showed a negative relationship between BMI and mortality. CONCLUSION: We found a negative relationship between BMI and mortality. Pre-obesity appears to have a protective role, but BMI was not found to be a useful addition to the revised Baux score. Larger sample sizes may be of benefit a for a for a more definitive understanding of the role of BMI with regards to burn survival.

Coming to Consensus: What Defines Deep Partial Thickness Burn Injuries in Porcine Models?

Deep partial thickness burns are clinically prevalent and difficult to diagnose. In order to develop methods to assess burn depth and therapies to treat deep partial thickness burns, reliable, accurate animal models are needed. The variety of animal models in the literature and the lack of precise details reported for the experimental procedures make comparison of research between investigators challenging and ultimately affect translation to patients. They sought to compare deep partial thickness porcine burn models from five well-established laboratories. In doing so, they uncovered a lack of consistency in approaches to the evaluation of burn injury depth that was present within and among various models. They then used an iterative process to develop a scoring rubric with an educational component to facilitate burn injury depth evaluation that improved reliability of the scoring. Using the developed rubric to re-score the five burn models, they found that all models created a deep partial thickness injury and that agreement about specific characteristics identified on histological staining was improved. Finally, they present consensus statements on the evaluation and interpretation of the microanatomy of deep partial thickness burns in pigs.

Child maltreatment by non-accidental burns: interest of an algorithm of detection based on hospital discharge database.

OBJECTIVES: To build a detection algorithm of non-accidental pediatric burns (NAB) using hospital resumes from the French Hospital Discharge Database (HDD) and to describe cases with no judicial or administrative report. MATERIALS AND METHODS: Children aged 0-16 years old hospitalized at the University Hospital of Tours from 2012 to 2017 with a coded burn were included. "Probable" or "possible" HDD cases of NAB were defined based on the International Classification of Diseases 10th version codes during the inclusion stay or the previous year. A chart review was performed on all the HDD cases and HDD non cases matched on sex and age with a 1:2 ratio. Performance parameters were estimated for three clinical definitions of child maltreatment: excluding neglect, including neglect in a restrictive definition, and in a broad definition. For clinical cases, report to the judicial or administrative authorities was searched. RESULTS: Among the 253 included children, 83 "probable" cases and 153 non-cases were analyzed. Sensitivity varied from 48 (95%CI [36-60], excluding neglect) to 90% [55-100] and specificity from 70 [63;77] to 68% [61;74]. The proportion of clinical cases with no report without justification varied from 0 (excluding neglect) to > 85% (with the broadest definition); all corresponded to possible isolated neglect. CONCLUSION: The performances of the algorithm varied tremendously according to the clinical definition of child maltreatment. Neglect is obviously complex and tough to clinically detect. Training for healthcare professionals and qualitative studies on obstacles to report should be added to this work.

Interrater Agreement and Reliability of Burn Size Estimations Between Emergency Physicians and Burn Unit.

The initial approach to burn injuries has remained relatively unchanged over the past several decades and revolves around trauma assessment and fluid resuscitation, frequently initiated in the emergency department (ED). While previous research suggests that emergency physicians (EP) are poor estimators at total body surface area (TBSA) affected, we believe that estimation differences are improving, specifically at academic centers with co-located burn units that emphasize burn injury education. This study investigated the interrater agreement and reliability of burn size estimations at an academic ED and its co-located burn unit. This single-center, retrospective study was conducted at a large academic ED with a co-located burn unit. The study included adult patients admitted to the burn unit after receiving paired burn size estimations from EPs and the burn unit. The primary endpoint was the interrater agreement, measured by the kappa coefficient, κ, of 10% TBSA estimation intervals. The secondary endpoint was the intraclass correlation coefficient (ICC), evaluating the reliability of exact, nonranged, and TBSA estimations. A chart review was performed for patients evaluated from November 1, 2016 to July 31, 2019. One thousand one hundred and eighty-four patients were admitted to the burn unit, 1176 of which met inclusion criteria for the primary endpoint. The κ of TBSA between EPs and the burn unit was 0.586, while the weighted κ was 0.775. These values correlate with moderate and substantial agreements, respectively. Additionally, 971 patients had exact TBSA estimations from paired EPs and the burn unit which were used for the secondary endpoint. The ICC between EPs and the burn unit was 0.966, demonstrating an excellent reliability. Further sub-analysis was performed, revealing mean over- and underestimation differences of exact TBSA estimations of 3.93 and 2.93, respectively. EPs at academic institutions with co-located burn units are accurate estimators of TBSA in the assessment of burn injuries. We believe that burn education, to include core rotations within the burn unit, plays a major role in improved burn size estimations.

Safety and efficacy of basic fibroblast growth factors for deep second-degree burn patients.

INTRODUCTION: Burn injuries are common afflictions; however, conservative wound care frequently leads to poor treatment compliance and physical disability in deep burn patients. Therefore, regenerative biologic materials, which are more effective for tissue repair, are required, particularly for deep second-degree burns. A novel spray formulation of basic fibroblast growth factors (bFGF) was produced by synthesizing fibroblast growth factor proteins. In this post-marketing surveillance (PMS) study, we assessed the safety and efficacy of bFGF and indirectly compared this formulation with cultured epidermal autografts (CEAs) for treating deep second-degree burns. MATERIALS AND METHODS: A total of 3173 patients treated at 15 hospitals were used for PMS of bFGF in South Korea for six years. In total, 1630 patients with deep second-degree burns were selected for assessing adverse events (AEs) of bFGF treatments. Efficacy was evaluated according to time periods until re-epithelialization, and clinical usefulness of bFGF was indirectly compared with that of CEAs. RESULTS: AEs occurred in 37 patients (2.3%) and included application site pain (1.7%) and contact dermatitis (0.6%). All AEs were mild and were evaluated as probably unrelated with bFGF. The average time for re-epithelialization was 8 days; this time span was significantly longer after major burns (9.7 days) than after minor (7.8 days) or moderate burns (7.9 days). Most treated burn wounds (99.8%) were assessed as improved. The indirect comparison included 534 patients using the same inclusion criteria for CEA patients (n = 35). The bFGF treatment demonstrated superior efficacy compared to CEAs by significantly reducing the average day to application (5.4 vs. 8.8 days) and re-epithelialization time (7.1 vs. 13.7 days). CONCLUSION: Our study demonstrated that bFGF is a compelling regenerative therapy with competitive clinical efficacy and safety for deep second-degree burns and reduced treatment time, which is expected to reduce medical costs, particularly for deep second-degree burn patients.

Real-time burn depth assessment using artificial networks: a large-scale, multicentre study.

INTRODUCTION: Early judgment of the depth of burns is very important for the accurate formulation of treatment plans. In medical imaging the application of Artificial Intelligence has the potential for serving as a very experienced assistant to improve early clinical diagnosis. Due to lack of large volume of a particular feature, there has been almost no progress in burn field. METHODS: 484 early wound images are collected on patients who discharged home after a burn injury in 48 h, from five different levels of hospitals in Hunan Province China. According to actual healing time, all images are manually annotated by five professional burn surgeons and divided into three sets which are shallow(0-10 days), moderate(11-20 days) and deep(more than 21 days or skin graft healing). These ROIs were further divided into 5637 patches sizes 224 × 224 pixels, of which 1733 shallow, 1804 moderate, and 2100 deep. We used transfer learning suing a Pre-trained ResNet50 model and the ratio of all images is 7:1.5:1.5 for training:validation:test. RESULTS: A novel artificial burn depth recognition model based on convolutional neural network was established and the diagnostic accuracy of the three types of burns is about 80%. DISCUSSION: The actual healing time can be used to deduce the depth of burn involvement. The artificial burn depth recognition model can accurately infer healing time and burn depth of the patient, which is expected to be used for auxiliary diagnosis improvement.

A state-wide analysis of pediatric scald burns by tap water, 2016-2018.

INTRODUCTION: Unsafe tap water temperatures (>120 °F) are a risk factor for pediatric burns, which may disproportionally impact low-income, urban communities. We sought to estimate the incidence and demographic characteristics of tap water burns and their association with housing characteristics. METHODS: We performed a secondary data analysis to summarize emergency department discharge records from 2016 to 2018 involving children <18 years with an ICD-10-CM code for tap water burn (X11), and town-level housing data from the American Community Survey. Unpaired student's t-test and spearman's correlation analysis were performed for comparative analyses. RESULTS: A total of 146 tap water burn visits were identified, representing an incidence of 2 per 10,000 ED visits. The majority of cases were male, non-Hispanic White, of public insurance type, and from an urban CT town. The median age was 3 years, with 58% of cases <5 years. Towns with at least one tap water burn had a significantly higher average percentage of multi-family unit and renter housing as compared to towns with no tap water burns (p < 0.0001). CONCLUSIONS: Our results identified a significant number of tap water burns in children. Primary prevention efforts targeting education or regulation of water temperatures may work to reduce burns in underserved areas.

Bilateral internal carotid artery occlusion with compensatory perfusion in a HIV-infected patient.

BACKGROUND: Worcester Hospital is a regional healthcare facility in the Western Cape, South Africa, without a dedicated burns unit. Currently there is limited data available of burns patient management outside of academic institutions in South Africa. To describe the incidence and demographics, and to determine the outcomes of burn patients admitted to Worcester Hospital. METHODOLOGY: A retrospective descriptive study of burn patients admitted to Worcester Hospital between 1 September 2016 and 31 August 2017. RESULTS: A total of 66 burn patients were included in this study which accounted for 1.6% of the total surgical admissions for this time period. The mean age of the patients was 39 (SD ± 19) years with a male predominance (59%). The mechanism of burn was mostly flame burns (71%); 16 patients (24%) were burned with hot fluids and 3 patients (5%) sustained electrical burns. The median TBSA was 9% (IQR: 5-28). Ten patients (15%) required critical care unit admission. The burn patients' median length of stay was 6 days (IQR: 2-11 days) versus 2 days (IQR: 1-5 days) for non-burn general surgery patients. Fifty burn patients (76%) required surgical intervention comprising of either debridement or skin grafting, or a combination of this. Forty-four patients (67%) underwent skin grafting procedures and the median TBSA grafted was 5% (IQR: 3.5-9.5). The median time from admission to first surgical procedure was 25 hours (IQR: 18.33-51.08). The in-hospital mortality rate was 23% and of the 15 mortalities, 9 patients (60%) had TBSA of 30% or more and therefore classified as a major burn. CONCLUSION: Burn injuries treated at Worcester Hospital are often severe and require significant resources. This study supplies critical information regarding the burden of burn related injuries managed at a regional level.

A New Normal.

A badly injured young man and his family take an important step toward acceptance.

Comparison of tandir burns and other flame burns.

BACKGROUND: Because internal temperature of tandir may reach up very high levels, tandir burns, which is one of flame burns, may cause more morbidity and mortality than those of other flame burns. Therefore, we aimed to compare tandir burns with other flame burns in the present study. METHODS: In this study, we compared tandir burns with other flame burns concerning age, gender, total burn surface area, burn depth, hospitalization times, hospitalization duration, surgical procedures performed, wound culture results, burn localization and mortality. RESULTS: Tandir burn patients were treated in the hospital for an average of 27.6±9.5 days, while non-tandir burn patients were treated for a period of 16.5±12.5 days. A significant difference was found between the hospitalization periods of the two groups (p<0.001). Tandir burn, which is a type of flame burn, affects the women and children much more frequently than other flame burns (p=0.0001), causes deeper burns (p=0.0001), which requires more surgical intervention (p=0.0001) and causes more frequent wound site infection. CONCLUSION: We think that it would be beneficial to treat high-temperature burns, such as tandir burns, as a separate group from other flame burns. We believe that further studies to be conducted in this field will bring new approaches to the treatment of tandir burns.

The association between burn and trauma severity and in-hospital complications.

OBJECTIVE: The aim of this study was to analyze the association between in-hospital complications and burn and trauma severity, inhalation injury, length of intensive care unit and hospital stay, and mortality in burned patients. METHOD: This observational and retrospective study included 68 burn patients hospitalized in a university hospital located in São Paulo, Brazil. The severity of the burn injury and trauma were measured by means of Abbreviated Injury Scale and the Injury Severity Score, respectively. Thecomplications were considered as a dependent variable. The statistical analysis for continuous variables was performed using the Student's t or the Mann-Whitney test and for categorical variables the Chi-square test, Fisher's Exact or Verisimilitude Ratio test, considering a significance level of 5%. RESULTS: The majority (60.3%) of patients had complications, and among them, those with infections were the most frequent (70.7%). Burned patients with complications had higher burn injury severity, were hospitalized for longer and their mortality was higher. Cardiovascular complications were associated with severe burns and mortality; infectious ones with a larger length of hospitalization. CONCLUSION: Complications are frequent in patients with severe burns and inhalation injuries, increasing length of hospital stay and mortality. Burn studies measuring severity of thermal and inhalation injuries and other associated traumas allow to expand the analysis of burned patients.

Pregabalin in the reduction of pain and opioid consumption after burn injuries: A preliminary, randomized, double-blind, placebo-controlled study.

BACKGROUND: The primary objective of the study was to evaluate the efficacy of 300 milligrams (mg) and 600 mg of pregabalin compared to placebo in the reduction of pain in patients with noncritical partial and full thickness burn injuries. METHODS: A prospective, randomized, double-blinded, single center, placebo-controlled trial was conducted. Simple randomization method was used in this trial. After subjects met all the inclusion and none of the exclusion criteria, they were randomized and assigned to 1 of the 3 18-day treatments groups: Pregabalin 300 group, Pregabalin 600 group, or Placebo group. Demographics and clinical characteristics were recorded. The severity of pain was assessed by using the visual analog scale for pain intensity at baseline on day 3, day 9 ±â€Š3, day 25 ±â€Š7, day 90 ±â€Š6, and day 180 ±â€Š12. RESULTS: A total of 54 subjects were randomly assigned, and 51 were included in the data analysis. Demographics and clinical characteristics did not differ significantly between the 3 groups. There was a statistically significant difference in pain between the Pregabalin 300 and Pregabalin 600 groups (P-value = .0260). The Pregabalin 300 group had 17.93 units (95% confidence interval: 1.83-34.04) higher pain scores on average than the Pregabalin 600 group, regardless of time. The adjusted P-value comparing 0 to 300 was .1618, while the adjusted P-value for 0 versus 600 was .5304. There was an overall difference in pain across time regardless of study group (P-value = <.0001). An overall difference in opioid consumption (P-value = .0003) and BSHS (P-value = .0013) across time regardless of study group was noted. CONCLUSIONS: Pregabalin could be part of a promising multimodal analgesic regimen in noncritical burn population. Future placebo-controlled studies assessing the use of pregabalin in burn victim patients may further endorse our findings.

Characteristics of accidental versus abusive pediatric burn injuries in an urban burn center over a 14-year period.

The aim of this study was to determine the demographic and associated characteristics of abusive burn injuries in children. Understanding the characteristics of burn injuries may help clinicians differentiate and recognize abusive injuries. We conducted a retrospective study of patients less than 5 years old admitted to an urban burn center from March 1999 to July 2013. Per protocol, all patients with burn injuries were evaluated by a multidisciplinary team (child abuse pediatrician, social worker, and nurse clinician). Demographic information, social risk factors, clinical presentation, caregiver at time of injury, radiographic studies and results, multidisciplinary team determination, and the Department of Children and Family Services investigation outcome were abstracted from the American Burn Association Burn Registry and patient's chart. Patient characteristics were evaluated with abuse status through Wilcoxon rank sum tests for continuous variables and chi-square tests or Fisher's exact test for categorical variables. A multiple logistic regression was fit to identify factors associated with abusive burns. One hundred and ten patients under 5 years were categorized as abuse (38) or accident (72). Demographic characteristics were similar between the abuse and accident groups. A determination of abuse was significantly associated with caregiver type (paramour), site of incident (outside of kitchen), time to seeking help (>4 hours), and the presence of nonburn skin injuries. A detailed history of the burn mechanism as well as psychosocial family risk factors are critical when evaluating pediatric patients with burn injuries, as it may assist the physician in distinguishing abusive from accidental burn injuries.

Tensor Decomposition for Colour Image Segmentation of Burn Wounds.

Research in burns has been a continuing demand over the past few decades, and important advancements are still needed to facilitate more effective patient stabilization and reduce mortality rate. Burn wound assessment, which is an important task for surgical management, largely depends on the accuracy of burn area and burn depth estimates. Automated quantification of these burn parameters plays an essential role for reducing these estimate errors conventionally carried out by clinicians. The task for automated burn area calculation is known as image segmentation. In this paper, a new segmentation method for burn wound images is proposed. The proposed methods utilizes a method of tensor decomposition of colour images, based on which effective texture features can be extracted for classification. Experimental results showed that the proposed method outperforms other methods not only in terms of segmentation accuracy but also computational speed.

Management of Hand Burn With Pedicled Converted Anterolateral Thigh Free Flap.

The upper limb is involved in burns in a high percentage of cases and its reconstruction is extremely important, given the functional impact of this anatomical region. Among the reconstruction choices for severe and large structural defects, the pedicled anterolateral thigh flap is an available option. This case study discusses the utilization of the pedicled anterolateral thigh flap for reconstruction of a complex full-thickness hand burn, when adequate arterial perforators were not available. Complex hand burns can often present challenges for reconstructive coverage, because of the complex anatomy of the upper extremity and the need to preserve as much function as possible. The use the anterolateral thigh free flap is one option that can be utilized for coverage of these large hand defects, in the face of poor local tissue advancement options. The finding of inadequate or lack of perforator vessels necessitates intraoperative changes in the surgical approach. In these cases, different alternatives exist depending on the dimensions and characteristics of the required coverage, the dissection of a pedicled flap being one of them. The pedicled anterolateral thigh flap represents an alternative for the coverage of large hand defects in the absence of valid perforators during free-flap dissection.

Instantaneous Specific Burn Debridement With an Enzymatic Debriding Agent: A New Resource for the Treatment of Burns.

Nexobrid is a new resource for debridement that has emerged in recent years and is gaining relevance in the treatment of all kinds of thermal injuries. This product is an ointment (formed with a mixture of pineapple-derived enzymes enriched with bromelain) that is directly applied over the burn. With a single application, it performs a burned tissue-specific debridement in less than 4 hr, leaving a vital and completely debrided wound bed. In this article, we describe our experience with this product, and through a representative case, we explain the management of these patients in our Burns unit in consonance with national and international consensus.