17 results on '"Luze, Hanna"'
Search Results
2. The Impact of Thermal Stress on Cognition and the Use of Cooling Wear for Alleviation-An Explorative Study.
- Author
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Luze H, Nischwitz SP, Fink J, Hecker A, Holzer JCJ, Schellnegger M, and Kamolz LP
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- Humans, Male, Female, Body Temperature, Body Temperature Regulation, Fever, Cognition, Protective Clothing, Burns therapy
- Abstract
Increased ambient temperatures during the care of severely burned patients are essential for mitigating hypothermia and minimizing the impact of consecutive hypermetabolism. For involved medical staff, those conditions may lead to impaired concentration, possibly negatively affecting optimal patient care. Yet, alleviation strategies are lacking. As a novel coping strategy, cooling wear may be an effective means. This explorative study aimed to investigate the effect of high ambient temperatures on the concentration capacity and cooling wear to alleviate thermal stress. The effects of high ambient temperatures and the additional use of cooling wear on the concentration capacity of medical staff were investigated in six subjects during two simulated burn surgeries. Each individual served as his/her own control undergoing one simulation with and one without cooling wear. Concentration capacity was measured before and after each simulation with a standardized test. The results suggested that high ambient temperatures, as used in burn medicine, negatively affect human concentration capacity. The initial assessment of concentration capacity yielded homogenous values. After heat exposure, subjects wearing cooling wear showed a higher concentration capacity and a lower error rate compared to subjects without cooling wear. Summing up, temperature-related decrements in vigilance and performance among medical personnel may impair the patients' outcome. As an opportunity to withstand thermal stress and improve medical care and safety, cooling wear showed promising results and may be used as a heat alleviator. Burn medicine may particularly benefit from further development and rigorous investigation of cooling strategies., (© The Author(s) 2021. Published by Oxford University Press on behalf of the American Burn Association. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2023
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3. Epidemiology of burn injury and the ideal dressing in global burn care - Regional differences explored.
- Author
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Opriessnig E, Luze H, Smolle C, Draschl A, Zrim R, Giretzlehner M, Kamolz LP, and Nischwitz SP
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- Male, Child, Humans, Retrospective Studies, Hospitalization, Health Personnel, Bandages, Length of Stay, Burns epidemiology, Burns therapy
- Abstract
Purpose: Burn injuries are to this day a major cause of morbidity and mortality, especially within low- and middle-income countries. Understanding the etiology of burn injury and epidemiologic- and hospital-specific factors associated with burns is vital for allotting resources for prevention and treatment. Therefore, the purpose of this study was to develop a profile of epidemiological differences in burn care and the ideal burn dressing among the different continents based on a global online survey., Objectives: This analysis evaluated trends in demographics, epidemiology of burn care, burn incidence, infection, related mortality and burn treatment (e.g., dressing changes and materials). The objective of this study was to investigate and compare the epidemiological profile of burn injury/care amongst the continents and a global control group to determine their utility for guiding evidence-based burn care and identify differences and/or similarities in their clinical practice., Methods: A retrospective analysis of data was performed that was acquired during a previous study investigating the ideal burn dressing on a global perspective. The data was analyzed depending on the continent, on which the respondent indicated their hospital to be (Africa, Australia & New Zealand, Asia, Europe, Middle and South America, North America). Statistical analysis was performed to evaluate patient and hospital demographics and variables associated with burn injuries and their treatment. Outcomes of interest also included infections, mortality, length of stay on the ICU and important burn dressing characteristics., Results: Healthcare providers in different areas of the world share similar views and needs regarding burn care management and on what constitutes an ideal burn dressing. We found significant differences in the various continents regarding hospitalization and length of stay on the ICU, with Australia taking the lead. Africa, with a high proportion of low-income-countries, reported the highest rate of burn infections, mortality, and a disproportionally high number of burn incidences amongst children. In general, men were mostly obtaining burn injuries amongst all continents. We found no significant differences regarding the most important characteristics of an ideal burn dressing., Conclusion: Our results suggest significant epidemiological differences regarding burn injuries and care amongst the continents, possibly resulting from the different infrastructure and/or circumstances on the various continents. Future scientific studies need to focus on adequate pain management and designing longer lasting materials that contain the "ideal" properties, by also taking individual regional needs/desires and the patient's perspective and economic boundaries into account. This analysis has delivered valuable insights into the epidemiological differences and/or similarities amongst the various continents., Competing Interests: Conflict of interest statement No conflict of interest is declared., (Copyright © 2022 The Authors. Published by Elsevier Ltd.. All rights reserved.)
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- 2023
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4. The Role of Local Inflammation and Hypoxia in the Formation of Hypertrophic Scars-A New Model in the Duroc Pig.
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Nischwitz SP, Fink J, Schellnegger M, Luze H, Bubalo V, Tetyczka C, Roblegg E, Holecek C, Zacharias M, Kamolz LP, and Kotzbeck P
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- Animals, Inflammation complications, Swine, Wound Healing physiology, Burns pathology, Cicatrix, Hypertrophic metabolism
- Abstract
Hypertrophic scars continue to be a major burden, especially after burns. Persistent inflammation during wound healing appears to be the precipitating aspect in pathologic scarring. The lack of a standardized model hinders research from fully elucidating pathophysiology and therapy, as most therapeutic approaches have sparse evidence. The goal of this project was to investigate the mechanisms of scar formation after prolonged wound inflammation and to introduce a method for generating standardized hypertrophic scars by inducing prolonged inflammation. Four wound types were created in Duroc pigs: full-thickness wounds, burn wounds, and both of them with induced hyperinflammation by resiquimod. Clinical assessment (Vancouver Scar Scale), tissue oxygenation by hyperspectral imaging, histologic assessment, and gene expression analysis were performed at various time points during the following five months. Native burn wounds as well as resiquimod-induced full-thickness and burn wounds resulted in more hypertrophic scars than full-thickness wounds. The scar scale showed significantly higher scores in burn- and resiquimod-induced wounds compared with full-thickness wounds as of day 77. These three wound types also showed relative hypoxia compared with uninduced full-thickness wounds in hyperspectral imaging and increased expression of HIF1a levels. The highest number of inflammatory cells was detected in resiquimod-induced full-thickness wounds with histologic features of hypertrophic scars in burn and resiquimod-induced wounds. Gene expression analysis revealed increased inflammation with only moderately altered fibrosis markers. We successfully created hypertrophic scars in the Duroc pig by using different wound etiologies. Inflammation caused by burns or resiquimod induction led to scars similar to human hypertrophic scars. This model may allow for the further investigation of the exact mechanisms of pathological scars, the role of hypoxia and inflammation, and the testing of therapeutic approaches.
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- 2022
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5. The Use of Acellular Fish Skin Grafts in Burn Wound Management-A Systematic Review.
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Luze H, Nischwitz SP, Smolle C, Zrim R, and Kamolz LP
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- Animals, Humans, Treatment Outcome, Wound Healing physiology, Fishes, Plastic Surgery Procedures, Biological Dressings, Burns surgery
- Abstract
Background and Objectives: Burn wound healing and management continues to be a major challenge for patients and health care providers resulting in a considerable socio-economic burden. Recent advances in the development of applicable xenografts as an alternative to split-thickness skin grafts have allowed for the development of acellular fish skin. Acellular fish skin acts as a skin substitute, reducing inflammatory responses and advancing proinflammatory cytokines that promote wound healing. Due to these beneficial wound healing properties, acellular fish skin might represent an effective treatment approach in burn wound management. Materials and Methods: A systematic review of the literature, up to March 2022, was conducted using the electronic databases PubMed and Web of Science. Titles and abstracts were screened for the following key terms (variably combined): "fish skin", "fish skin grafts", "acellular fish skin", "Omega3 Wound matrix", "xenograft", "burn injury", "burns". Results: In total, 14 trials investigating the effects of acellular fish skin in burn wounds or split-thickness donor sites were determined eligible and included in the present review. Existing evidence on the use of acellular fish skin indicates an acceleration of wound healing, reduction in pain and necessary dressing changes as well as treatment-related costs and improved aesthetic and functional outcomes compared to conventional treatment options. Conclusions: Acellular fish skin xenografts may represent an effective, low-cost alternative in treatment of superficial- and partial-thickness burns. However, results mainly originate from preclinical and small cohort studies. Future larger cohort studies are warranted to elucidate the full potential of this promising approach.
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- 2022
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6. In Vivo Models for Hypertrophic Scars-A Systematic Review.
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Rössler S, Nischwitz SP, Luze H, Holzer-Geissler JCJ, Zrim R, and Kamolz LP
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- Animals, Disease Models, Animal, Dogs, Guinea Pigs, Humans, Mice, Rabbits, Rats, Wound Healing, Burns, Cicatrix, Hypertrophic drug therapy, Cicatrix, Hypertrophic etiology
- Abstract
Background Hypertrophic scars following surgeries or burns present a serious concern for many patients because these scars not only lead to an aesthetical but also to a functional and psychological burden. Treatment of hypertrophic scars is challenging because despite various treatment options, a low level of evidence hinders preference of any specific treatment plan. To properly identify new therapeutic approaches, the use of in vivo models remains indispensable. A gold standard for hypertrophic scars has not been established to date. This review aims at giving a comprehensive overview of the available in vivo models. and Objectives: Hypertrophic scars following surgeries or burns present a serious concern for many patients because these scars not only lead to an aesthetical but also to a functional and psychological burden. Treatment of hypertrophic scars is challenging because despite various treatment options, a low level of evidence hinders preference of any specific treatment plan. To properly identify new therapeutic approaches, the use of in vivo models remains indispensable. A gold standard for hypertrophic scars has not been established to date. This review aims at giving a comprehensive overview of the available in vivo models. Materials and Methods: PubMed and CINAHL were queried for currently existing models. Results: Models with mice, rats, rabbits, pigs, guinea pigs and dogs are used in hypertrophic scar research. Rodent models provide the advantage of ready availability and low costs, but the number of scars per animal is limited due to their relatively small body surface, leading to a high number of test animals which should be avoided according to the 3Rs. Multiple scars per animal can be created in the guinea pig and rabbit ear model; but like other rodent models, these models exhibit low transferability to human conditions. Pig models show a good transferability, but are cost-intensive and require adequate housing facilities. Further, it is not clear if a currently available pig model can deliver clinical and histological features of human hypertrophic scars concurrently. Conclusions: None of the analyzed animal models can be clearly recommended as a standard model in hypertrophic scar research because the particular research question must be considered to elect a suitable model.
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- 2022
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7. Global burn care and the ideal burn dressing reloaded - A survey of global experts.
- Author
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Nischwitz SP, Luze H, Popp D, Winter R, Draschl A, Schellnegger M, Kargl L, Rappl T, Giretzlehner M, and Kamolz LP
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- Humans, Internationality, Surgical Wound Infection prevention & control, Surveys and Questionnaires, Anti-Infective Agents, Bandages, Burns therapy
- Abstract
Purpose: Burn care is a highly relevant medical specialty in every part of the world. Different infrastructure, healthcare systems and access to medical supplies lead to different needs, treatment strategies and outcomes. A fundamental tool in a burn care provider's armamentarium is the use of different dressings. Several studies have investigated the question of the ideal burn dressing, but none could achieve a proper global perspective. With advanced dressings being on the rise, we conducted this study to get a global understanding of the actual use and idea of the ideal burn dressing., Objective: The objective of this study was to investigate the understanding of an 'ideal burn dressing' on a global scale., Materials and Methods: A questionnaire about burn care and the ideal burn dressing has been created and translated to five of the most spoken languages world-wide (English, Spanish, French, Chinese, Indonesian). It has been uploaded to an online survey platform and sent out to burn experts worldwide. The voluntary participation was possible for a period of four weeks., Results: In total, 196 respondents from 49 countries participated in the study, yielding a response rate of 24.5%. The most important burn dressing characteristics in a cumulative ranking were (1) lack of adhesion (80.54%), (2) pain-free dressing change (79.87%), (3) requirement of fewer dressing changes, while in a linear ranking they were (1) anti-infective (35.14% 1st), pain-reduction (24.14% 2nd), and high absorbency (23.49% 3rd). Silver-based dressings are the most used dressings for superficial (45.21%) and deep (52.78%). 94.81% believe that the choice of burn dressing affects the outcome., Conclusion: This investigation has delivered valuable insights into the global perspective of the ideal burn dressing. Yet, the question of the ideal burn dressing is still inconclusive. Wound dressing research is of fundamental interest for patients, healthcare providers and healthcare systems., (Copyright © 2021 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
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- 2021
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8. Resveratrol promotes wound healing: A very short overview.
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Kamolz LP, Luze H, Nischwitz SP, and Kotzbeck P
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- Humans, Resveratrol pharmacology, Wound Healing, Burns
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- 2021
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9. The use of human ex vivo models in burn research - Developments and perspectives.
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Luze H, Nischwitz SP, and Kamolz LP
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- Skin anatomy & histology, Burns therapy, Models, Biological, Research trends, Skin physiopathology
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- 2021
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10. Historical Evolution of Skin Grafting-A Journey through Time.
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Kohlhauser M, Luze H, Nischwitz SP, and Kamolz LP
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- Humans, Skin, Wound Healing, Burns surgery, Skin Transplantation
- Abstract
Autologous skin grafting was developed more than 3500 years ago. Several approaches and techniques have been discovered and established in burn care since then. Great achievements were made during the 19th and 20th century. Many of these techniques are still part of the surgical burn care. Today, autologous skin grafting is still considered to be the gold standard for burn wound coverage. The present paper gives an overview about the evolution of skin grafting and its usage in burn care nowadays.
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- 2021
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11. Burns in pandemic times - The Graz way towards COVID-19 and back.
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Nischwitz SP, Popp D, Sawetz I, Smolle C, Tuca AC, Luze H, and Kamolz LP
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- Austria, Communicable Disease Control, Humans, Patient Isolation, Personal Protective Equipment, Public Policy, SARS-CoV-2, Triage, Burn Units organization & administration, Burns therapy, COVID-19, Environment Design, Hospitals, University organization & administration, Infection Control
- Abstract
The first half of the year 2020 has been shaped by quarantines and lock-downs all over the world. The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a pandemic, that slowed down not only social interactions and economy, but also medical and health care. Governments and hospitals were forced to create ad hoc emergency plans maintaining the balance between an adequate participation in collective response of shutting-down to avoid a further spreading of the virus, while preserving the ongoing acute care and simultaneously being able to react to an imminent overextension with a collapse of capacities. The University Hospital Graz is one of the largest hospitals in Austria. As transregional trauma and burn centre it provides care for people from all over Austria and faced special challenges. We present the strategy of the University Hospital Graz in dealing with the COVID-19 pandemic and the way back to (new) normality. The strategy includes infrastructural, patient-centred and staff-centred measures. The continuously low numbers of new infections in Austria allowed a loosening of the lock-down measures already. Particular attention has to be paid to attentive screening of patients and triaging of surgeries during the re-boot. The re-boot needs to be slow and steady to reduce the risk of an infectiological relapse. Once this pandemic is defeated, a careful re-evaluation of the different internationally applied strategies should be performed to be prepared for the future., (Copyright © 2020 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
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- 2021
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12. A novel human ex vivo skin model to study early local responses to burn injuries.
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Hofmann E, Fink J, Eberl A, Prugger EM, Kolb D, Luze H, Schwingenschuh S, Birngruber T, Magnes C, Mautner SI, Kamolz LP, and Kotzbeck P
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- Acute-Phase Reaction genetics, Acute-Phase Reaction metabolism, Adult, Biopsy, Burns genetics, Burns metabolism, Cytokines genetics, Cytokines metabolism, Female, Humans, In Vitro Techniques, Inflammation genetics, Inflammation metabolism, Inflammation pathology, Middle Aged, Models, Biological, Skin injuries, Skin metabolism, Skin ultrastructure, Transcriptome, Acute-Phase Reaction pathology, Burns pathology, Skin pathology
- Abstract
Burn injuries initiate numerous processes such as heat shock response, inflammation and tissue regeneration. Reliable burn models are needed to elucidate the exact sequence of local events to be able to better predict when local inflammation triggers systemic inflammatory processes. In contrast to other ex vivo skin culture approaches, we used fresh abdominal skin explants to introduce contact burn injuries. Histological and ultrastructural analyses confirmed a partial-thickness burn pathology. Gene expression patterns and cytokine production profiles of key mediators of the local inflammation, heat shock response, and tissue regeneration were analyzed for 24 h after burn injury. We found significantly increased expression of factors involved in tissue regeneration and inflammation soon after burn injury. To investigate purely inflammation-mediated reactions we injected lipopolysaccharide into the dermis. In comparison to burn injury, lipopolysaccharide injection initiated an inflammatory response while expression patterns of heat shock and tissue regeneration genes were unaffected for the duration of the experiment. This novel ex vivo human skin model is suitable to study the local, early responses to skin injuries such as burns while maintaining an intact overall tissue structure and it gives valuable insights into local mechanisms at the very beginning of the wound healing process after burn injuries.
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- 2021
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13. Importance of accurate and reproducible animal models for burn wounds.
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Luze H, Kotzbeck P, Nischwitz SP, and Kamolz LP
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- Animals, Disease Models, Animal, Burns
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- 2020
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14. Electrical burns and their consequences.
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Nischwitz SP, Luze H, Kotzbeck P, and Kamolz LP
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- Child, Humans, Length of Stay, Burns, Burns, Electric
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- 2020
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15. Thermal imaging via FLIR One - A promising tool in clinical burn care and research.
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Nischwitz SP, Luze H, and Kamolz LP
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- Child, Humans, Infrared Rays, Thermography, Burns
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- 2020
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16. The use of antiseptics in burn wounds - Our perspective.
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Luze H, Nischwitz SP, and Kamolz LP
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- Burn Units, Chlorhexidine, Humans, Wound Healing, Anti-Infective Agents, Local, Burns
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- 2020
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17. Challenges in Burn Care during the COVID-19 Pandemic—A Scoping Review.
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Kohlhauser, Michael, Luze, Hanna, Nischwitz, Sebastian Philipp, and Kamolz, Lars-Peter
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BURN care units , *COVID-19 pandemic , *COVID-19 , *PERSONNEL management , *PANDEMICS - Abstract
Objective: The aim of this review is to map and summarize the experiences of various burn centers worldwide during the COVID-19 pandemic, in order to enable future strategies with regard to the most effective measures in burn care during pandemics and to detect possible gaps in knowledge. Background: The coronavirus disease 2019 (COVID-19) pandemic had a major impact on economies, social interactions, and health systems worldwide. Burn units all over the world face a new challenge in maintaining the care of acute burn wounds and follow-up treatments while dealing with constantly changing regulations. Infrastructural changes, the establishment of efficient triage systems, protective measures, personnel resources, in addition to the maintenance of efficient patient care and the guarantee of supply chains, are challenging tasks to be addressed. This review provides an overview of recent developments regarding different strategies and methods used by burn units worldwide to safely overcome the COVID-19 pandemic outbreak. Methods: A scoping review of the literature was conducted using the electronic databases PubMed and Google Scholar. Publications were screened for the following key terms: burns, burn injuries, thermal injuries, burn center, burn unit, burn ward, in combination with COVID-19, COVID-19 pandemic, SARS-CoV-2, Corona, and Coronavirus. Articles dealing with the management of burn units during the pandemic were further analyzed and included. Results: Of the 136 publications, 10 were considered relevant to the key question and were included in the present review. Results were divided into six major topics, such as infrastructural and personnel management, triaging, severe burns and emergencies, elective surgeries, patient and visitor management, and outpatient management. Conclusion: Only a few studies about managing burn units during the COVID-19 pandemic have been published. Personnel resources and equipment needed to be redistributed to cope with country-specific challenges during the COVID-19 pandemic and to maintain adequate burn care. Since all of these articles refer to the period of the initial outbreak, a lack of clinical studies exists regarding the prevention measures taken by burn units during the COVID-19 pandemic. In addition, we identified gaps in knowledge about the impact of implemented measures on burn patient outcomes in the published literature. Further studies are mandatory in order to provide generally applicable guidelines regarding COVID-19 prevention measures at a burn unit. [ABSTRACT FROM AUTHOR]
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- 2022
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