scholarly journals Investigating the depth of thermal burns in elephants

2006 ◽  
Vol 77 (3) ◽  
Author(s):  
A. Shakespeare ◽  
J. Steyl ◽  
S. Strydom
Keyword(s):  
Histological Examination ◽  
Clinical Observation ◽  
Burn Injuries ◽  
Thermal Burns ◽  
Partial Thickness ◽  
Burn Depth ◽  
Skin Samples

Histological examination of burn injuries in elephants revealed that the depth was not as severe as expected from clinical observation. Although the actual burn depth was deep, the thickness of elephant skin, especially the dermis, resulted in the lesions being classified as less severe than expected. Examination of skin samples from selected areas showed that most lesions were either superficial (1st degree) or superficial partial-thickness (superficial 2nd degree) burns with the occasional deep partial thickness (deep 2nd degree) wound. These lesions however, resulted in severe complications that eventually led to the death of a number of the elephants.

734 A Comparison of Burn Depth Assessment Between Clinical Diagnosis and Laser Doppler Imaging

2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S199-S199
Author(s):  
Suzanne Mitchell ◽  
Dhaval Bhavsar ◽  
Jessica Reynolds ◽  
Jessica Jones ◽  
Julia M Pena
Keyword(s):  
Wound Healing ◽  
Clinical Diagnosis ◽  
Laser Doppler ◽  
Burn Injuries ◽  
Burn Wound ◽  
Burn Wound Healing ◽  
Partial Thickness ◽  
Partial Thickness Burn ◽  
Doppler Image ◽  
Burn Depth

Abstract Introduction Accurate burn assessment is crucial to prescribing appropriate treatment and is dependent upon the experience of the provider and the timing of diagnosis relative to the burn injury evaluation. Differentiating between a deep partial thickness and full thickness burn may not be easily discernible. To augment the clinical diagnosis of burn depth, a laser doppler image measures the microvascular blood flow of injured tissue to predict burn wound healing. The aim of this study is to evaluate the clinical assessment of burn wounds by experienced burn providers compared to the laser doppler image assessment in predicting which burn wounds should heal spontaneously in 3 weeks. Methods A retrospective chart review from 2012–2016, included 54 subjects. The clinical assessment included a description of burn variables relevant to the determination of spontaneous burn wound healing (burn depth, total body surface area, mechanism of injury, anatomical location, clinical burn depth diagnosis, and laser doppler image). A chi-square analysis compared the clinical diagnosis and the laser doppler assessment of burn wound depth, as well as the correlation between clinical diagnosis versus laser doppler image in predicting spontaneous burn wound healing. Results Comparing partial thickness burn injuries, there were 38 clinically diagnosed partial thickness injuries (by experienced burn providers) and 38 partial thickness burn injures diagnosed via LDI. Deep partial thickness burn injuries were diagnosed clinically in 9 subjects, compared to 10 via LDI. Full thickness burn injuries were diagnosed clinically in 7 subjects and 6 via LDI. A chi-square test was performed to examine the relationship between clinical diagnosis of burn depth and laser doppler image. The relation between these variables was significant,X2= 26.884, p< .000. Comparing clinically diagnosed burn depth to LDI, each approach (clinical or LDI) diagnosed 42 subjects with partial thickness or deep partial thickness burn injuries and all healed spontaneously. Two of the clinically diagnosed full thickness burn injuries required skin grafting. Six patients were lost to follow-up (X2= 17.745, p < .001). Conclusions This study confirms there is no difference between an experienced burn provider’s clinical diagnosis of burn wound depth and prognosis for spontaneous healing compared to a laser doppler image prognosis of burn wound healing. Applicability of Research to Practice In an era of advanced technologies, expert clinical bedside assessment is the standard of care.

scholarly journals Experimental justification for prompt neutralization of traumatic action of thermal exo- and endogenous damage factors (morphological features)

2021 ◽  
Vol 26 (6) ◽  
pp. 3040-3046
Author(s):  
VASYL NAGAICHUK ◽  
ROMAN CHORNOPYSHCHUK ◽  
OLEKSANDR NAZARCHUK ◽  
LUDMILA SIDORENKO ◽  
MYKOLA ZHELIBA ◽  
...  
Keyword(s):  
Connective Tissue ◽  
Histological Examination ◽  
Thermal Damage ◽  
Burn Injuries ◽  
Control Group ◽  
Experimental Conditions ◽  
Skin Appendages ◽  
Experimental Justification ◽  
Traumatic Effect ◽  
Burn Depth

Objective: morphological substantiation of efficiency of prompt neutralization of traumatic action of exogenous and endogenous damage factors in burn injuries in experimental conditions. After simulating the burns on 60 rats, the traumatic hyperthermic damage factors in the main group were immediately neutralized by a gauze napkin soaked in water. Depending on its duration, the animals were divided into subgroups. Such applications were not performed on the control group. The study involved histological examination of tissues. Animals of the main groups had the presence of histologically confirmed skin appendages with a formed scar of connective tissue without signs of inflammation. In animals of the control group there were no skin appendages, which indicates a deeper thermal damage to tissues and the impossibility of self-epithelialization of wounds. These results confirm the importance and necessity of prompt neutralization of the traumatic effect of damage factors as the main elements of burn depth formation.

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

2020 ◽  
Author(s):  
Angela L F Gibson ◽  
Bonnie C Carney ◽  
Leila Cuttle ◽  
Christine J Andrews ◽  
Christine J Kowalczewski ◽  
...  
Keyword(s):  
Animal Models ◽  
Burn Injury ◽  
Burn Injuries ◽  
Partial Thickness ◽  
Partial Thickness Burn ◽  
Consensus Statements ◽  
Partial Thickness Burns ◽  
Burn Depth ◽  
Histological Staining ◽  
Educational Component

Abstract 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.

Cryogenic Refrigerant Burns: A Rare Occupational Hazard

2020 ◽  
pp. 216507992096553
Author(s):  
Suvashis Dash ◽  
Vamseedharan Muthukumar ◽  
Rajkumar R ◽  
Durga Karki
Keyword(s):  
Exposure Time ◽  
Treatment Plan ◽  
Hand Function ◽  
Skin Grafting ◽  
Burn Injuries ◽  
Air Conditioners ◽  
Burn Center ◽  
Adequate Knowledge ◽  
Treatment Measures ◽  
Burn Depth

Background Cryogenic burns induced by coolant gases used in refrigerators and air conditioners are rarely encountered, despite the wide use of these gases. To date, only a few cases have been reported in the literature. This study examined the occupational circumstances leading to such injuries, relevant injury sites, types of chemicals involved, and treatment measures. Methods This study was conducted in a tertiary burn center in India between March 2015 and March 2019. The demographic details, chemicals involved, and burn regions and characteristics were analyzed. Findings There were 15 burn cases all involving injury to the hand. All injuries were managed initially with dressings and nonoperative management. One patient required anti-edema therapy with limb elevation and fingertip debridement, while another patient required skin grafting. All patients had satisfactory hand function after treatment. Conclusions/Application to Practice Cryogenic burn injuries caused by refrigerants are rare, and their etiology varies considerably. Exposure time is the primary factor that determines burn depth and severity; hence, reducing exposure time is important in first aid. Our findings suggest that after exposure, the patient should be treated in a specialized burn center. Adequate knowledge regarding the pathophysiology of these types of burn injuries and their management is necessary; otherwise, misjudgments in the treatment plan can lead to adverse consequences.

Experimental models for controlled burn injuries in rats: a systematic analysis of original methods and burn devices

2021 ◽  
Author(s):  
Stefan Morarasu ◽  
Bianca-Codrina Morarasu ◽  
Nicolae Ghețu ◽  
Mihail-Gabriel Dimofte ◽  
Radu Iliescu ◽  
...  
Keyword(s):  
Final Analysis ◽  
Experimental Models ◽  
Burn Injuries ◽  
Systematic Analysis ◽  
Experimental Burn ◽  
Controlled Burn ◽  
Histological Confirmation ◽  
The Right ◽  
Burn Depth

Abstract AIM Despite a wide variety of models found in literature, choosing the right one can be difficult as many of them are lacking precise methodology. This study aims to analyze and compare original burn models in terms of burn device and technique, parameters, and wound depth assessment. METHODS A systematic search was performed according to PRISMA guidelines on studies describing original experimental burn models in rats. The adapted PICO formula and ARRIVE checklist were followed for inclusion and assessment of quality of studies. Characteristics of animals, burn technique, burn parameters and method of histological confirmation of burn depth were recorded. RESULTS Twenty-seven studies were included in the final analysis. Most studies used direct contact with skin for burn infliction (n=20). The rat’s dorsum was the most common site (n=18). Ten studies used manually controlled burn devices, while ten designed automatic burn devices with control over temperature (n=10), exposure time (n=5), and pressure (n=5). Most studies (n=7) used a single biopsy taken from the center of the wound to confirm burn depth immediately after burn infliction. CONCLUSION From the wide variety of burn models in current literature, our study provides an overview of the most relevant experimental burn models in rats aiding researchers to understand what needs to be addressed when designing their burn protocol. Models cannot be compared as burn parameters variate significantly. Assessment of burn depth should be done in a standardized, sequential fashion in future burn studies to increase reproducibility.

scholarly journals miRNAs as Regulators of the Early Local Response to Burn Injuries

2021 ◽  
Vol 22 (17) ◽  
pp. 9209
Author(s):  
Ines Foessl ◽  
Christoph Walter Haudum ◽  
Ivan Vidakovic ◽  
Ruth Prassl ◽  
Joakim Franz ◽  
...  
Keyword(s):  
Early Phase ◽  
Target Genes ◽  
Burn Injury ◽  
Ex Vivo ◽  
Expression Patterns ◽  
Treatment Success ◽  
Burn Injuries ◽  
Specific Gene ◽  
Partial Thickness ◽  
Partial Thickness Burn

In burn injuries, risk factors and limitations to treatment success are difficult to assess clinically. However, local cellular responses are characterized by specific gene-expression patterns. MicroRNAs (miRNAs) are single-stranded, non-coding RNAs that regulate mRNA expression on a posttranscriptional level. Secreted through exosome-like vesicles (ELV), miRNAs are intracellular signalers and epigenetic regulators. To date, their role in the regulation of the early burn response remains unclear. Here, we identified 43 miRNAs as potential regulators of the early burn response through the bioinformatics analysis of an existing dataset. We used an established human ex vivo skin model of a deep partial-thickness burn to characterize ELVs and miRNAs in dermal interstitial fluid (dISF). Moreover, we identified miR-497-5p as stably downregulated in tissue and dISF in the early phase after a burn injury. MiR-218-5p and miR-212-3p were downregulated in dISF, but not in tissue. Target genes of the miRNAs were mainly upregulated in tissue post-burn. The altered levels of miRNAs in dISF of thermally injured skin mark them as new biomarker candidates for burn injuries. To our knowledge, this is the first study to report miRNAs altered in the dISF in the early phase of deep partial-thickness burns.

726 The Use of Xeroform Dressings for Partial Thickness Scald Burn Injuries in a Verified Pediatric Burn Center

2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S194-S195
Author(s):  
Lisa C Vitale ◽  
Jennifer Livingston ◽  
Erica Curtis ◽  
Katherine Oag ◽  
Christina M Shanti ◽  
...  
Keyword(s):  
Burn Injury ◽  
Wound Care ◽  
Total Body Surface Area ◽  
Burn Injuries ◽  
Wound Complications ◽  
Burn Wound ◽  
Burn Center ◽  
Partial Thickness ◽  
Partial Thickness Burn ◽  
At Home

Abstract Introduction For children who have suffered a burn injury one of the greatest challenges is managing pain with an adequate yet practical burn wound dressing that will ultimately be managed at home. Medical product companies have created a variety of wound care products available on the market. These products are advertised to be more superior over one another in categories such as decrease in wound infections, minimization of pain, ease of dressing application, increased dressing wear time, and better wound healing. With all the options for burn wound care there are many factors to consider when choosing a burn dressing such as cost, ease of dressing for families at home, comfort, and efficacy. At our ten year verified pediatric burn center we have tried many different burn wound care products, however we have found Xeroform and bacitracin to be the most practical and easy to use for our patient population. Methods A retrospective chart review was performed from 2016–2018 of all cascading scald injuries to children 0–5 years of age treated at our verified pediatric burn center. 179 patients were included in this review. Of those patients a total of 52 patients were excluded, 28 patients had no follow up, 21 patients received alternate dressings, and 3 patients had full thickness injuries requiring a split thickness skin graft (STSG). Charts were reviewed for total body surface area (TBSA), length of stay (LOS), discharge dressing type, complications, and time to healing. All patients included routinely received consistent application of the Xeroform and bacitracin. Results 127 patients discharged with Xeroform dressings were included in this study with an average age of 1.4 years old (range 0–5 years) and average TBSA of 2.5% (range 0.25–13%). The average LOS was 1.6 days (range 1–10 days). In this sample 32 (25%) patients were healed within 7 days. 77 (61%) patients were healed within 7–14 days. 11 (9%) patients were healed within 14–21 days. 7 (5%) patients were healed in greater than 21 days. There were no wound complications identified within this study group. Conclusions Using Xeroform as our standard of practice has streamlined the care provided to our patients. We have demonstrated consistent effective re-epithelization, protection from infection, and ease of dressings for families and burn providers. In our experience Xeroform has provided a versatile way to care for partial thickness burn injuries. Applicability of Research to Practice We suggest Xeroform and bacitracin dressings be used for partial thickness burn injuries in patients under 5 years of age. This dressing may be superior to other products because it allows for bathing while providing good wound epithelization and is easy to use.

Effects of Experimentally Induced Fleece-rot on the Structure of the Skin of Merino Sheep

1982 ◽  
Vol 35 (5) ◽  
pp. 545 ◽  
Author(s):  
DE Hollis ◽  
RE Chapman ◽  
JA Hemsley
Keyword(s):  
Histological Examination ◽  
Merino Sheep ◽  
Trunk Region ◽  
Simulated Rain ◽  
Skin Samples ◽  
Experimentally Induced

Four medium- and six strong-wool Merino sheep were exposed to continuous simulated rain (4'5 mm/h) for periods ranging from 3 to 9 days. In response, the sheep developed characteristics typical of fleece-rot lesions such as exudative encrustation' and bacterial discoloration of the fleece. Skin samples were taken periodically for histological examination from the trunk region of the sheep prior to, during, and after wetting.

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