Petra Warner

Effects of oxandrolone on outcome measures in the severely burned: a multicenter prospective randomized double-blind trial.

Severe burns induce pathophysiologic problems, among them catabolism of lean mass, leading to protracted hospitalization and prolonged recovery. Oxandrolone is an anabolic agent shown to decrease lean mass catabolism and improve wound healing in the severely burned patients. We enrolled 81 adult subjects with burns 20% to 60% TBSA in a multicenter trial testing the effects of oxandrolone on length of hospital stay. Subjects were randomized between oxandrolone 10 mg every 12 hours or placebo. The study was stopped halfway through projected enrollment because of a significant difference between groups found on planned interim analysis. We found that length of stay was shorter in the oxandrolone group (31.6 ± 3.1 days) than placebo (43.3 ± 5.3 days; P < .05). This difference strengthened when deaths were excluded and hospital stay was indexed to burn size (1.24 ± 0.15 days/% TBSA burned vs 0.87 ± 0.05 days/% TBSA burned, P < .05). We conclude that treatment using oxandrolone should be considered for use in the severely burned while hepatic transaminases are monitored.

Inhalation Injury in Children: A 10 Year Experience at Shriners Hospitals for Children

Inhalation injury remains a significant source of morbidity and mortality in children with burn injury. The purpose of this study is to analyze the incidence, demographic characteristics, and outcomes for children who have sustained burn injury at one of four regional pediatric burn centers. A retrospective review of children aged 0 to 18 years admitted to one of four pediatric burn centers from 1997 to 2007 with a diagnosis of inhalation injury was performed. Factors analyzed included demographics, injury severity, treatment duration, and outcomes. A total of 850 patients with a mean age of 7.9 ± 0.2 years and a mean total body surface area burn of 48.6 ± 0.9% were admitted with a diagnosis of inhalation injury. Mean interval between injury and hospital admission was 4.2 ± 0.3 days. Inhalation injury was diagnosed by bronchoscopy in 71%, via elevated carboxyhemoglobin in 4%, and by clinical signs/history alone in 25%. Hospital length of stay averaged 44.8 ± 1.7 days, and patients required mechanical ventilation for a mean of 15.2 ± 0.8 days. Mortality was 16.4%. Inhalation injury in children is associated with significant morbidity and mortality, and diagnosis of inhalation injury does not follow consistent guidelines. Further studies are required to standardize diagnostic criteria for inhalation injury and to optimize the treatment of children with inhalation injury.

Energy Requirements of Pediatric Patients With Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis

INTRODUCTION The primary purpose of this study was to compare the measured resting energy requirements (MREE) of children with Stevens-Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN) with that of children with burns of similar size. A secondary goal was to develop a predictive equation useful in estimating the energy of children with SJS/TEN. METHODS This retrospective study included 30 patients admitted to our pediatric burn unit between 12/91 and 03/06. All patients were admitted within 10 days of injury and had at least 1 metabolic cart measurement. Fifteen patients with SJS/TEN comprised group 1. Group 2 consisted of 15 burn patients matched for total wound size, age, preinjury weight, and gender. Caloric intake and discharge weight (percent of preburn weight) were recorded. RESULTS The energy needs of the SJS/TEN group were 22% less than the burn group. Correlation between MRE x 1.3 and caloric intake was 0.89 for the SJS/TEN group and 0.92 for the burn group (P < .0001). Both the SJS/TEN and burn groups were managed by nutrition goals based on the MREE x 1.3, and patients were 95.1% +/- 6.3% and 98.9% +/- 6% of preinjury weight at discharge, respectively, in each group. An equation for the estimation of energy requirements in pediatric SJS/TEN patients was statistically generated: (24.6 x weight in kg) + (% wound x 4.1) + 940. CONCLUSION The energy requirement in pediatric SJS/TEN patients is less than that following burn injury. The application of a 30% factor to MREE is supported in SJS/TEN and thermal injury.

Multimodal quantitative analysis of early pulsed-dye laser treatment of scars at a pediatric burn hospital.

BACKGROUND The pulsed‐dye laser (PDL) is a potential adjunctive therapy for treatment of hyperemic and hypertrophic scars. OBJECTIVE To compare the effects of early PDL treatment plus compression therapy (CT) with those of CT alone in patients undergoing burn scar reconstruction with split‐thickness grafts on an extremity. METHODS Laser treatments were applied to one half of the graft seam. Standard CT was applied to both halves. Laser treatment was repeated at 6‐week intervals until one half reached sufficient clinical improvements. Each half was evaluated just before treatments using quantitative measures of color, scar height, biomechanical properties and clinical features using the Vancouver Scar Scale (VSS). RESULTS Less quantitative scar erythema and height and greater tissue elasticity were observed after two or three treatments for PDL plus compression than with compression alone. VSS scores showed greater improvement for vascularity, pliability, pigmentation, and height for PDL plus compression than for compression alone. CONCLUSION PDL treatment in combination with CT appears to reduce scar hyperemia and height and normalize the biomechanical properties of burn‐related scars.

An 18-Year Experience in the Management of Congenital Nevomelanocytic Nevi

Background:Children with giant congenital nevomelanocytic nevi (CNN) are referred to our pediatric burn center for the surgical management of this disfiguring and potentially malignant skin disorder. Use of tissue expanders has contributed significantly in limiting donor site morbidity associated with treatment of giant CNN. Cultured skin substitutes (CSS) have also shown promise as an alternative wound coverage. With recent controversy regarding the effectiveness of excision in preventing melanoma risk, we wished to review our surgical management of giant CNN and to determine the incidence of malignancy in these patients. Methods:A retrospective chart review of patients with giant CNN was performed from 1985 to 2003. Charts were reviewed for age, sex, percentage total body surface area (TBSA) involved, age at initiation and completion of treatment, surgical treatment, complications, histopathology, and length of follow-up. Results:Of the 40 patients treated at our facility, the mean extent of skin involvement was 10% TBSA (range: 0.5%–75%). The mean age at initial operation was 5.1 years, and the majority of surgical interventions were completed within a mean of 1.3 years. Twenty-two patients (55%) required more than 1 surgical procedure. Excision and split-thickness skin grafting was the most common surgical procedure (n = 22) followed by excision with primary closure (n = 18). Ten patients were treated with tissue expansion, while 4 received cultured skin replacements. One patient died of extracutaneous melanoma during the course of surgical treatment. Three patients demonstrated histopathologic evidence of cytoatypia but remained clinically free of malignancy during a mean follow-up of 11 years. Conclusions:Giant CNN are both important cosmetic and medical problems. With an associated lifetime risk of melanoma in 4%–10% of patients, excision of CNN is recommended despite the fact that 50% of melanomas arise extracutaneously. Depending on the extent of body surface area involvement, wound closure can be obtained with conventional split- or full-thickness skin grafts, tissue expansion, and/or cultured autologous cultured skin substitutes. The latter 2 modalities provide improved cosmetic results, with minimal donor site morbidity.

Randomized, Paired-Site Comparison of Autologous Engineered Skin Substitutes and Split-Thickness Skin Graft for Closure of Extensive, Full-Thickness Burns.

Stable closure of full-thickness burn wounds remains a limitation to recovery from burns of greater than 50% of the total body surface area (TBSA). Hypothetically, engineered skin substitutes (ESS) consisting of autologous keratinocytes and fibroblasts attached to collagen-based scaffolds may reduce requirements for donor skin, and decrease mortality. ESS were prepared from split-thickness skin biopsies collected after enrollment of 16 pediatric burn patients into an approved study protocol. ESS and split-thickness autograft (AG) were applied to 15 subjects with full-thickness burns involving a mean of 76.9% TBSA. Data consisted of photographs, tracings of donor skin and healed wounds, comparison of mortality with the National Burn Repository, correlation of TBSA closed wounds with TBSA full-thickness burn, frequencies of regrafting, and immunoreactivity to the biopolymer scaffold. One subject expired before ESS application, and 15 subjects received 2056 ESS grafts. The ratio of closed wound to donor areas was 108.7 ± 9.7 for ESS compared with a maximum of 4.0 ± 0.0 for AG. Mortality for enrolled subjects was 6.25%, and 30.3% for a comparable population from the National Burn Repository (P < .05). Engraftment was 83.5 ± 2.0% for ESS and 96.5 ± 0.9% for AG. Percentage TBSA closed was 29.9 ± 3.3% for ESS, and 47.0 ± 2.0% for AG. These values were significantly different between the graft types. Correlation of % TBSA closed with ESS with % TBSA full-thickness burn generated an R 2 value of 0.65 (P < .001). These results indicate that autologous ESS reduce mortality and requirements for donor skin harvesting, for grafting of full-thickness burns of greater than 50% TBSA.

Thrombocytopenia in the pediatric burn patient.

Thrombocytopenia is initially seen in patients with burn injury as a transient occurrence during the first week after injury. Subsequent decreases occur later in the course of treatment and are commonly due to sepsis, dilutional effects, and medication exposure. Although studies have demonstrated that thrombocytopenia in the critically ill patients is associated with a worse prognosis, there is limited literature as to the significance of thrombocytopenia in the pediatric burn patients. In this study, the authors evaluate the prognostic implications of thrombocytopenia in the pediatric burn patients. They performed a 5-year retrospective chart of patients aged 18 years or younger with burns >20% TBSA admitted to their institution. Data collected included patient demographics, burn etiology and %TBSA involvement, length of stay, pertinent laboratory values, and in-hospital morbidity and mortality. Of the 187 patients studied, thrombocytopenia occurred in 112 patients. Eighty-two percent demonstrated thrombocytopenia within the first week of injury and 18% demonstrated additional episodes of thrombocytopenia after this time. A reactive thrombocytosis occurred in 130 (70%) patients. The incidence of thrombocytopenia could not be attributed to age, gender, or burn etiology. However, patients with thrombocytopenia were more likely to have inhalation injury and extensive TBSA involvement than those without (P < .05). Sepsis was the cause of significant thrombocytopenia after the first week of hospitalization. Of the 187 patients, 14 died (7%). The incidence of thrombocytopenia in survivors and nonsurvivors was statistically significant in that nonsurvivors demonstrated a more profound drop in platelet count during the first week after injury and had a more depressed platelet recovery curve than survivors. The authors conclude that the early development of thrombocytopenia with depressed thrombocytosis in the pediatric burn patient is associated with increased mortality risk and is influenced by the extent of burn, inhalation injury, and the development of sepsis.

Outpatient Burn Management

Most burn patients have injuries that may be treated on an outpatient basis. Newer silver-based dressings and improved medications for the treatment of pain and pruritus have led to further growth of outpatient care. The final barrier of distance from the burn center will decrease with the growth of telemedicine. It is incumbent for burn centers to develop outpatient guidelines to facilitate this growth of outpatient care.

A performance improvement initiative to determine the impact of increasing the time interval between changing centrally placed intravascular catheters.

Existing practice guidelines designed to minimize invasive catheter infections and insertion-related complications in general intensive care unit patients are difficult to apply to the burn population. Burn-specific guidelines for optimal frequency for catheter exchange do not exist, and great variation exists among institutions. Previously, the authors’ practice was to follow a new site insertion at 48 hours by an exchange over a guidewire, which was followed 48 hours later by a second guidewire exchange (48h group). As a performance improvement initiative, the authors attempted to determine whether there would be any advantage or disadvantage to extending these intervals to 72 hours (72h). All patients with centrally placed intravascular catheters from October 2007 to August 2008 were included in the 48h group, and all patients with catheters placed from September 2008 to December 2009 comprised the 72h group. Catheter infection rates were determined using the National Healthcare Safety Network definition for central line–associated bloodstream infections (CLABSIs) and calculated as CLABSIs/1000 catheter days. The two groups were not significantly different for age, sex, burn etiology, total burn size, or percent third-degree burn. There were 3.1 CLABSIs/1000 catheter days for the 48h group and 2.8 CLABSIs/1000 catheter days for the 72h group (NS). The authors conclude that increasing the central catheter change interval from 48 to 72 hours did not result in any increase in their CLABSI rate. Implementation of this change in practice is expected to decrease supply costs by

The effects of facial burns on health outcomes in children aged 5 to 18 years.

28,000 annually in addition to reducing clinical support services needed to perform these procedures.