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

Author(s):  
Angela L F Gibson ◽  
Bonnie C Carney ◽  
Leila Cuttle ◽  
Christine J Andrews ◽  
Christine J Kowalczewski ◽  
...  

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.

2021 ◽  
Vol 22 (17) ◽  
pp. 9209
Author(s):  
Ines Foessl ◽  
Christoph Walter Haudum ◽  
Ivan Vidakovic ◽  
Ruth Prassl ◽  
Joakim Franz ◽  
...  

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.


2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S194-S195
Author(s):  
Lisa C Vitale ◽  
Jennifer Livingston ◽  
Erica Curtis ◽  
Katherine Oag ◽  
Christina M Shanti ◽  
...  

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.


2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S199-S199
Author(s):  
Suzanne Mitchell ◽  
Dhaval Bhavsar ◽  
Jessica Reynolds ◽  
Jessica Jones ◽  
Julia M Pena

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.


2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S244-S245
Author(s):  
Suzanne Mitchell ◽  
Dhaval Bhavsar ◽  
Jessica Reynolds ◽  
Jessica Jones ◽  
Julia M Pena

Abstract Introduction In the U.S. about 450,000 people per year receive medical burn care through hospital emergency departments, hospital outpatient clinics, free-standing urgent care centers and private physician offices. Burns are generally classified in terms of depth and severity. Outpatient management of partial thickness burns normally involves the application of an ointment, which may contain an antibiotic and is widely used in burn care. This clinical study has been designed to prospectively evaluate potential benefits of an enzymatic debrider in partial thickness burn wounds compared to antibiotic only treatment. The primary purpose of this study is to compare an enzymatic debrider with a topical antibiotic ointment in the proportion healed at 3 weeks after initiation of treatment, and time to healing (in weeks). Methods A convenience sample of 20 subjects, aged 19–56, with an acute thermal burn injury less than 72 hours old, and less than 10% TBSA were randomly assigned to outpatient treatment with an enzymatic debrider or a topical antibiotic. The proportion of subjects healed after 3 weeks of treatment was analyzed using ANOVA. In addition, a t-test comparison between the enzymatic debrider and the topical antibiotic was performed. Results For partial thickness burns, the mean time to heal using an enzymatic debrider was 18 days compared to 28 days for the topical antibiotic. However, there was no statistical significance in burn wound closure between subjects receiving an enzymatic debrider compared to a topical antibiotic, t (13) = .677; p = .510. An analysis of variance comparing an enzymatic debrider and a topical antibiotic also showed no statistical significance in time to heal (F=.849, p=374). Conclusions Due to the small sample size, the results from this study do not support the use of an enzymatic debrider versus a topical antibiotic in treating partial thickness burn injuries to advance wound closure or shorten time to heal. The results of this study show clinical significance, with burn wounds healed in 18 days when an enzymatic debrider was used compared to 28 days when a topical antibiotic was used. The lack of statistical significance was due to an under-powered study. Furthermore, partial thickness burns should spontaneously heal within 7–14 days, regardless of the topical treatment, excluding concomitant co-morbidities. Applicability of Research to Practice Continued research is necessary, employing larger sample sizes to adequately compare the use of an enzymatic debrider compared to topical antibiotics in deep partial thickness burn wounds. In addition, outpatient management of deep thickness and full-thickness burn injuries, utilizing sharp debridement in conjunction with enzymatic debridement, in patients who decline surgical treatment of burn wounds should be explored, analyzing time to heal, scar evaluation, and cost analysis,


2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Gabriel Djedovic ◽  
Florian Stefan Kamelger ◽  
Johannes Jeschke ◽  
Hildegunde Piza-Katzer

Extracorporeal shock wave therapy (ESWT) enhances tissue vascularization and neoangiogenesis. Recent animal studies showed improved soft tissue regeneration using ESWT. In most cases, deep partial-thickness burns require skin grafting; the outcome is often unsatisfactory in function and aesthetic appearance. The aim of this study was to demonstrate the effect of ESWT on skin regeneration after deep partial-thickness burns. Under general anesthesia, two standardized deep partial-thickness burns were induced on the back of 30 male Wistar rats. Immediately after the burn, ESWT was given to rats of group 1 (N=15), but not to group 2 (N=15). On days 5, 10, and 15, five rats of each group were analyzed. Reepithelialization rate was defined, perfusion units were measured, and histological analysis was performed. Digital photography was used for visual documentation. A wound score system was used. ESWT enhanced the percentage of wound closure in group 1 as compared to group 2 (P<0.05). The reepithelialization rate was improved significantly on day 15 (P<0.05). The wound score showed a significant increase in the ESWT group. ESWT improves skin regeneration of deep partial-thickness burns in rats. It may be a suitable and cost effective treatment alternative in this type of burn wounds in the future.


2021 ◽  
Author(s):  
Omar Osman ◽  
Zachery Harris ◽  
Juin Zhou ◽  
Mahmoud Khani ◽  
Adam Singer ◽  
...  

Abstract The accuracy of clinical assessment in partial-thickness burn injuries has remained as low as 50-75%. Depending on the depth and environmental factors in the wound, such as reactive oxygen species, inflammation, and autophagy, partial-thickness burns can heal spontaneously or require surgical intervention. In this study, we demonstrate that Terahertz Time-Domain Spectral Imaging (THz-TDSI) is a promising tool for in vivo quantitative assessment of burn injuries. We used a novel handheld THz-TDSI scanner to characterize burn injuries in a porcine scald model with histopathological control. Prior work used THz reflectivity (representation of tissue hydration) as the only source of signal contrast. However, we used the spectral amplitude and the spectral slope of the terahertz electric field to distinguish the different severities of burns, suggesting that the energy loss due to electromagnetic scattering from skin constituents serves an additional metric to quantitatively assess burn injuries. Statistical analysis (n = 40) indicates that THz-TDSI can accurately differentiate between partial-thickness and full-thickness burn injuries (1-way ANOVA, p < 0.05) and monitor the healing process of partial thickness burns. THz-TDSI has the potential to improve burn care outcomes by helping surgeons to make objective decisions for early excision.


2016 ◽  
Vol 22 ◽  
pp. 1903-1909 ◽  
Author(s):  
Umit Ozcelik ◽  
Yahya Ekici ◽  
Huseyin Yuce Bircan ◽  
Cem Aydogan ◽  
Suna Turkoglu ◽  
...  

2020 ◽  
Vol 42 (2) ◽  
pp. 33-36
Author(s):  
Manish Devkota ◽  
Samit Sharma ◽  
Sangam Rayamajhi ◽  
Jayan M Shrestha ◽  
Ishwar Lohani

Introduction Burn injuries are associated with higher morbidity and mortality especially in middle and low-income countries. The objective of the study is to assess the outcome of acute burn injuries in a tertiary care center of Kathmandu, Nepal. MethodsThis is a descriptive cross-sectional study of the clinical data of acute burn patients admitted from January 2016-December 2018. ResultsOut of 124 patients with burn injuries, there were more females (n=65, 52.4 %) than males (n=59, 47.6%). Flame burn was the most common mode of injury (n=71,57.3 %) followed by scald (n=22,17.7 %). Thirty-eight (30.6%) patients arrived to hospital on the same day of injury. The average time required to reach our hospital was 24 hours. The most frequently involved site was lower extremities (n=40, 32.26%) followed by upper extremities (n=33, 26.62%). Total body surface area (TBSA) involved in the burn injury ranges from 10% to 50% with a median of 15%. Hospital stay was 14 to 58 days with a median of 17 days. Partial thickness burn was seen in 114 (91.94%) patients whereas 10 (8.06%) patients had full thickness burn. Surgical intervention was needed in 71 (57.26%) patients. Among 71 patients, 12 patients underwent surgery twice. Fifty-two (41.94%) patients were managed conservatively. The mortality rate was 4.03%. ConclusionAdult female population is at high risk for burn injuries mostly due to flame burn. Delay in reaching care has also contributed for poor outcome of burn injuries. Majority of burn injury patients needed surgical intervention and hence improvement in surgical aspects can lead to better outcome of burn injuries.Keywords:


2019 ◽  
Vol 5 ◽  
pp. 205951311989695
Author(s):  
Ter-Er Kusu-Orkar ◽  
Umar Islam ◽  
Benjamin Hall ◽  
Evan Araia ◽  
Nikki Allorto

Background: Cutimed® Sorbact® is a dressing marketed as having antimicrobial properties and easy application without the threat of antibiotic resistance and difficult accessibility. There is little evidence on the clinical outcomes of the use of Cutimed® Sorbact® in adults and currently no evidence of use of Cutimed® Sorbact® on superficial-partial thickness burn injuries in children. Objective: To summarise the clinical outcome of burn wounds in children with superficial-partial thickness burns in which Cutimed® Sorbact® was used. Method: An observational case series was conducted in Edendale Hospital, Pietermaritzburg, South Africa over the course of four weeks. Patients where included if they were aged < 10 years and had a ⩽ 15% superficial-partial burn. The primary outcome measure was time to 95% re-epithelialisation. Secondary outcome measures included wound complications, adverse healing and number of dressing changes. Results: Ten patients (five girls, five boys; age range = 11 months–8 years) were included in this case series. All participants had a type VI Fitzpatrick skin type and 80% of burns were hot water burns. Of all patients treated with Cutimed® Sorbact®, 50% healed within seven days, 70% within 14 days and 100% within 21 days. There was only one wound complication noted in this study and there was no adverse healing in any burn wounds. The mean number of dressing changes was 1.4 (range = 1–2) and length of hospital stay was in the range of 0–11 days (mean = 5.1 days). Conclusion: Cutimed® Sorbact® is a safe, useful and cost-effective dressing that should be used as an alternative for superficial-partial burns in children.


2020 ◽  
Vol 41 (3) ◽  
pp. 657-662 ◽  
Author(s):  
Yanwei Sun ◽  
Yongqian Cao ◽  
Ran Zhao ◽  
Famei Xu ◽  
Dan Wu ◽  
...  

Abstract In this study, we aimed to evaluate the therapeutic effects of autologous platelet-rich plasma (PRP) on deep partial-thickness burns in Bama pigs. Deep partial-thickness burn wounds were created on the back of Bama pigs. The reepithelialization time was compared between the PRP and control groups. The mean score of Ki67 (+) cells and α-SMA (+) vessels, the mean thickness of epidermis and dermis of the healing wounds were determined via H&E staining and immunohistochemical assay. The levels of the growth factors epidermal growth factor (EGF), basic fibroblast growth factor (bFGF), and vascular endothelial growth factor (VEGF) were examined by ELISA. Our data showed that the time to wound reepithelialization was shorter in the PRP group compared with the control group. The thickness of the epidermis was larger in the PRP group compared with the control group. On the 7th and 14th days after the treatment, the mean score of Ki67 (+) cells and α-SMA (+) vessels were higher in the PRP group compared with the control group. The PRP group showed higher levels of growth factors (EGF, bFGF, and VEGF) compared with the control group by ELISA. The results indicated that PRP could improve wound healing process of deep partial-thickness burns in Bama pigs. The PRP increased the thickness of epidermis of the healed wounds, cell proliferation, and angiogenesis. We demonstrated that applying PRP had a greater potential for the treatment of deep partial-thickness burns.


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