96 Treatment of Donor Sites in Large TBSA Burn Injuries with an Autologous Skin Cell Suspension Supports Early Reharvesting

2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S62-S63
Author(s):  
Kevin N Foster ◽  
James H Holmes ◽  
William L Hickerson ◽  
Jeffrey W Shupp ◽  
Robert Sheridan ◽  
...  

Abstract Introduction Treatment of large TBSA burn injuries is often limited by donor site availability and requires reharvesting to obtain definitive closure. Patients with severe injuries may have delayed closure compared to uncompromised patients that typically have their donor sites healed in 7–14 days. Autologous skin cell suspension (ASCS) can be prepared to treat burn wounds at the point-of-care. The safety and effectiveness have not yet been established for use in the treatment of donor sites. This study presents the use of ASCS for the treatment of donor sites in patients with life-threatening burn injuries that were enrolled in a prospective uncontrolled observational study (IDE 15945—NCT02992249). Methods ASCS was applied to the donor site after harvesting of STSGs. Clinical outcomes out to one year were evaluated including percentage of re-epithelialization, long-term cosmetic outcomes, and adverse events. Results Ninety-six subjects from 22 burn centers had their donor sites treated with ASCS as part of their treatment regimen. The average subject age was 30.1 and the average TBSA injury was 53.7 ±17.3%. The mean Baux score was 89.2 with 36% of subjects having a score greater than 100. Collectively, 528 donor sites were individually treated. In this compromised patient population 37.5% were ≥95% re-epithelialized by week 1 (n=435), and by week 2, 82.7% of the donor sites were ≥95% re-epithelialized (n=434), regardless of how many times they were harvested. Approximately 19% of the donor sites treated with ACSC were reharvested multiple times following initial healing (15% two times, 2.3% three times, and 7 donor sites were harvested 4 times) and retreated. Of donor sites harvested more than once, 39.3% (n=84), 81% (n=79), and 85.7% (n=77) of sites were ≥ 95% re-epithelialized by week 1, 2 and 4, respectively. One-year data was available for 427 donor sites and the majority had matched or mildly mismatched color, pigment, and texture. Adverse events included one site with a hematoma, one patient with donor sites that had fragile skin loss secondary to traumatic friction, one patient with active bleeding, two patients with anemia secondary to donor site bleeding, one patient with delayed closure due to mild infection of staph species. All AEs were unlikely or unrelated to the device. Conclusions ASCS has been successfully used to achieve closure of donor site wounds without significant safety risk in patients with extensive burn injuries. Applicability of Research to Practice Application of ASCS for donor site healing may be particularly relevant for patients with large burn injuries requiring subsequent reharvesting to achieve definitive closure.


2021 ◽  
Vol 42 (Supplement_1) ◽  
pp. S83-S84
Author(s):  
Kevin N Foster ◽  
Joseph Molnar ◽  
William L Hickerson ◽  
Jeanne Lee ◽  
Brett C Hartman ◽  
...  

Abstract Introduction Management of extensive burn injuries is complicated often resulting in significant morbidity and mortality. Current standard of care includes use of split-thickness skin grafts (STSG) to obtain definitive closure; however, this treatment is often limited by donor site availability, which requires repeated re-harvesting of donor sites to obtain definitive closure in large total body surface area injuries. Additionally, this limitation often leads to increased risk of infection, hypertrophic scarring, and extended hospital length of stay. Autologous skin cell suspension (ASCS) prepared using the autologous cell harvesting device is an FDA approved point-of-care regenerative medicine technology that significantly reduces donor skin requirements to achieve definitive closure in acute thermal burn injuries across small and large burns. A prospective uncontrolled observational study (IDE 15945—NCT02992249) was conducted in which patients with life-threatening burn injuries were treated with ASCS. In this study, clinical outcomes were evaluated when ASCS was used in combination with wide meshed autografts for burn site treatment. Within the study, a subset of donor sites was also treated with ASCS and the purpose of the current work was to evaluate the clinical outcomes obtained to better understand impact on healing times and effect of re-harvesting in this compromised patient population. Methods ASCS was applied to the donor site after harvesting of split-thickness skin grafts. Clinical outcomes out to one year were evaluated, including the percentage of re-epithelialization, long-term cosmetic outcomes, and adverse events. Results Subjects (n=96) from 22 burn centers received ASCS as part of their donor site treatment regimen (n=528). Mean subject baseline demographics were: 30.2 years of age, 54.0 ± 17.4% TBSA injury, and 89.4 ± 32.9 Baux score with 37% of subjects having a score greater than 100. Percentage of donor sites healed, defined as >95% re-epithelialization, was 37.1% and 82.7% after week 1 and week 2, respectively. Approximately 20% of the donor sites treated with ASCS were re-harvested multiple times following initial healing (up to four times). Of these donor sites 39.3% (n=84), 81.0% (n=79), and 85.7% (n=77) were healed by week 1, week 2, and week 4, respectively. Scar assessments conducted on 427 donor sites after one year showed the majority had matched or mildly mismatched color, pigment, and texture. Safety analyses of adverse events (AEs) following ASCS treatment were unlikely or unrelated to the device. Conclusions This study demonstrates successful use of ASCS to achieve closure of donor site wounds in patients with extensive burn injuries.



2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S37-S38
Author(s):  
Jeffrey E Carter ◽  
Blake Platt ◽  
Charles T Tuggle

Abstract Introduction Burn injuries remain a surgical challenge with few recent innovations. Grafting with split-thickness skin grafts (STSGs) has been the standard of care for decades. Although shown to have mortality benefits, STSGs are associated with significant morbidity in the form of pain and additional open wounds. For years, surgeons have looked for ways to decrease this associated morbidity. To that end, autologous skin cell suspension (ASCS) is a recently FDA-approved point of care regenerative medicine technology that reduces donor skin requirements without compromising clinical outcomes. Our study evaluated the cost and length of stay comparing STSG alone versus ASCS. Methods We obtained IRB-approval for single institution, retrospective chart review of patients age >14 years admitted with burn injuries from March 2018 – September 2018. Primary outcome was length of stay/%TBSA for patients undergoing STSG alone as compared to patients undergoing ASCS. The 2016 American Burn Association National Burn Repository (NBR) was used to benchmark LOS/%TBSA. Age, percentage burn injury (TBSA), LOS, mortality, and number of surgeries were reviewed. Student’s t-test was used to assess statistical significance of intragroup analysis. Results 36 patients were treated with ASCS in combination with meshed autografts for full-thickness acute burn injuries. 37 patients were treated with STSGs at our center. Mean age and %TBSA was 45.2 years and 6.6% for the STSG group and 46.0 years and 18.6% for the ASCS group. The LOS/%TBSA for the STSG was 1.72 versus 1.19 for the ASCS patients (p-value=0.02). The NBR predicts a LOS/%TBSA of 3.38 and 3.42 for the STSG and ASCS groups. Patients in the STSG group and ASCS group had statistically similar surgeries and mortalities. Conclusions Burn injured patients treated with ASCS had a decreased LOS/%TBSA when compared to both the STSGs and NBR predictions. ASCS is a novel technology allowing for point-of-care treatment that may decrease LOS for burn injured patients and should be considered as an adjunct to traditional techniques for burn patients. Applicability of Research to Practice Reduced length of stay compared to traditional burn care.



2019 ◽  
Vol 40 (Supplement_1) ◽  
pp. S70-S71
Author(s):  
J A Molnar ◽  
J Holmes ◽  
J Carter ◽  
J Lee ◽  
K Foster ◽  
...  


2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S200-S200
Author(s):  
Nicole M Kopari

Abstract Introduction Necrotizing soft tissue infections (NSTIs) are some of the more difficult disease processes encountered by physicians. Most patients require multiple surgical debridements, and survivors often have complex wounds requiring soft tissue coverage and prolonged hospitalizations. The goal of this report is to describe the use of autologous skin cell suspension over widely meshed skin graft in a patient with large wound secondary to a NSTI. Methods A retrospective chart review was performed of a patient with NSTI of the abdomen.The patient received autologous skin cell suspension as an epidermal graft in combination with widely meshed skin grafting. Results A 41 year-old female had an abdominal wound infection resulting in a NSTI. The patients had poorly controlled diabetes, congestive heart failure, and coronary heart disease with a drug eluting stent on dual antiplatelet therapy. She presented septic to an outside facility where she underwent multiple abdominal wound debridements. She was transferred to our institution with concerns for ongoing infection. Upon arrival, the wounds appeared stable with granulation tissue present over the wound bed with small areas of necrotic fat. She underwent debridement and autologous skin cell suspension in combination with a widely (3:1) meshed skin graft. The donor site also received treatment with the cell suspension. The wounds were covered with a non-adherent dressing along with bismuth-impregnated, petroleum-based gauze. Additional padding was secured with sutures to prevent post-operative shearing. On post-operative day (POD) 2 the outer dressings were changed with excellent adherence of the graft. On POD 4 her dressings were taken down completely, staples were removed, and she was transitioned to daily topical antimicrobial ointment and a non-adherent dress to her torso. She had >95% closure on POD 7 on both her graft and donor site. Conclusions Similar to severe burn injuries, the magnitude and scope of NSTI necessitates radical debridement often creating challenges in wound care, preservation of function, and cosmesis. Autologous skin cell suspension in combination with widely meshed skin grafts appear to be well-suited for treatment of large wounds resulting from NSTI. Treatment of this patient demonstrated decreased healing times, decreased donor sites, and an acceptable cosmetic outcome. Applicability of Research to Practice Autologous skin cell suspension has been approved for the use in partial and full thickness burn either as an epidermal graft alone or in combination with widely meshed grafts. This case report represents an example of its use in large complex wounds secondary to NSTI with acceptable outcomes.





2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S100-S101
Author(s):  
Arhana Chattopadhyay ◽  
Courtney Swan ◽  
Clifford C Sheckter ◽  
Deepak Gupta ◽  
Yvonne L Karanas

Abstract Introduction An autologous skin cell suspension (ASCS) spray containing keratinocytes, fibroblasts, and melanocytes can be processed from a small split thickness skin sample for use at the point-of-care in the operating room. ASCS have been shown to facilitate epidermal regeneration in large TBSA partial thickness burns with minimal donor site morbidity. We hypothesized that ASCS in conjunction with a 3:1 split thickness skin graft applied to burn wounds and ASCS alone applied to the donor site would facilitate healing in a 95 year-old burn patient with 12% TBSA deep partial and full thickness scald burns to the abdomen and bilateral thighs. To our knowledge, she is the oldest patient to undergo epidermal autografting with ASCS. Methods All burn wounds were tangentially excised in the standard fashion to healthy tissue. Split thickness (12/1000 inch) skin graft was harvested from the right lateral thigh, meshed 3:1, and applied to all wound beds. ASCS were prepared and sprayed on grafted sites and the donor site. All areas were dressed with Telfa clear and Xeroform with bacitracin. Dressings were initially changed every 2 days, and wounds were photographed on day 2, 4, 6, 8, 10, and 20. Results All burn wounds were deep partial thickness or full thickness. The right thigh donor site was completely healed by POD 10. 90% of the burn wounds had healed by POD 10. The area of deepest burn, an approximately 20 cm2area on the left medial thigh, was healed by POD 20. Conclusions We believe that ASCS enhanced the rate of re-epithelialization of burn wounds in a 95 year-old patient compared to our experience with skin grafting alone in this population. ASCS also promoted complete healing of the donor site by POD 10. This technology may have a role in decreasing healing time in the geriatric burn population. These findings are important for this population as longer lengths of stay are associated with delirium, hospital acquired infections, and deconditioning. This patient’s improved donor site healing also has broader implications as split thickness skin grafts are used widely for wound coverage in plastic surgery. Applicability of Research to Practice Demonstrates efficacy of ASCS in very elderly patients with moderate-sized deep burns and with skin graft donor sites.



2019 ◽  
Vol 40 (Supplement_1) ◽  
pp. S3-S3
Author(s):  
J Carter ◽  
J Molnar ◽  
J Holmes ◽  
P Glat ◽  
W Davis ◽  
...  


2019 ◽  
Vol 40 (Supplement_1) ◽  
pp. S225-S226
Author(s):  
K N Foster ◽  
K J Richey ◽  
S C Osborn ◽  
B Burkey ◽  
J Carter ◽  
...  


Author(s):  
Aldin Malkoc ◽  
David T Wong

Abstract Since autologous split-thickness skin grafts are scarce and lab skin growth requires a significant amount of time, there are limited available treatment approaches for patients with full-thickness burns greater than 90% TBSA. Additionally, to achieve the primary goal of skin coverage and resuscitation, there must exist a balance between fluid loss and metabolic derangement. Allografts and xenografts have traditionally been used early in the process to achieve these goals. Currently, novel approaches to treatment consider the additional use of synthetic dermal substitutes and autologous skin cell suspension to improve outcomes. This case series describes the treatment course of patients with greater than 90% TBSA full-thickness burn injuries using a staged, multifaceted approach of using NovoSorb Biodegradable Temporizing Matrix™ as the primary dermal substitute in conjunction with a RECELL™ Autologous Cell Suspensions Device applied with autograft and allograft to achieve improved resuscitation, limiting fluid loss, and finally skin coverage. Allograft and NovoSorb Biodegradable Temporizing Matrix™ were used early to cover excised burns, resulting in improved metabolic control by limiting the systemic inflammatory response syndrome and fluid loss. Both patients survived using this approach.



Author(s):  
Katherine A. Dawson ◽  
Megan A. Mickelson ◽  
April E. Blong ◽  
Rebecca A. L. Walton

Abstract CASE DESCRIPTION A 3-year-old 27-kg female spayed American Bulldog with severe burn injuries caused by a gasoline can explosion was evaluated. CLINICAL FINDINGS The dog had extensive partial- and full-thickness burns with 50% of total body surface area affected. The burns involved the dorsum extending from the tail to approximately the 10th thoracic vertebra, left pelvic limb (involving 360° burns from the hip region to the tarsus), inguinal area bilaterally, right medial aspect of the thigh, and entire perineal region. Additional burns affected the margins of the pinnae and periocular regions, with severe corneal involvement bilaterally. TREATMENT AND OUTCOME The dog was hospitalized in the hospital’s intensive care unit for 78 days. Case management involved provision of aggressive multimodal analgesia, systemic support, and a combination of novel debridement and reconstructive techniques. Debridement was facilitated by traditional surgical techniques in combination with maggot treatment. Reconstructive surgeries involved 6 staged procedures along with the use of novel treatments including applications of widespread acellular fish (cod) skin graft and autologous skin cell suspension. CLINICAL RELEVANCE The outcome for the dog of the present report highlighted the successful use of maggot treatment and applications of acellular cod skin and autologous skin cell suspension along with aggressive systemic management and long-term multimodal analgesia with debridement and wound reconstruction for management of severe burn injuries encompassing 50% of an animal’s total body surface area.



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