Prevalence of limbal stem cell deficiency at an academic referral center over a two-year period.

Aim: To evaluate the prevalence and clinical characteristics of limbal stem cell deficiency (LSCD) in the setting of a tertiary referral cornea practice at an academic center. Patient and methods: A retrospective chart review was performed to identify all unique medical record numbers (MRNs) presenting to a single cornea specialist (JHH) at the University of Minnesota during calendar years 2019 and 2020. Records were queried and confirmed for a diagnosis of LSCD. Clinical characteristics of identified patients, including demographics, etiology of LSCD, severity of LSCD, treatment, and best corrected visual acuity (BCVA) at final follow-up, were documented. Results: In total 1436 unique MRNs were identified over the study period. There were 61 individuals (91 eyes) diagnosed with LSCD, resulting in a prevalence of 4.25% (95% CI, 3.33-5.42). Of 91 eyes, 60 eyes were bilateral (65.9%). Among all eyes, ocular surface burns were the most common etiology (18.7%) followed by iatrogenic or medicamentosa (15.4%). There were 51 eyes (56.0%) that underwent some form of transplantation. The median BCVA at final follow-up was Snellen 20/80 (range 20/20 to no light perception). Conclusions: The prevalence of LSCD found at a cornea subspecialty tertiary referral center in our study was much higher than previously reported prevalence rates. This may reflect referral bias and potential underdiagnosis of LSCD in practices outside of subspecialty referral centers. The high prevalence rate in our study also suggests that LSCD patients are concentrated in subspecialty referral practices, with many having high morbidity disease. This constitutes a major health burden for these practices.

Fire impacts on the biology of stream ecosystems: A synthesis of current knowledge to guide future research and integrated fire management.

Freshwater ecosystems host disproportionately high biodiversity and provide unique ecosystem services, yet they are being degraded at an alarming rate. Fires, which are becoming increasingly frequent and intense due to global change, can affect these ecosystems in many ways, but this relationship is not fully understood. We conducted a systematic review to characterize the literature on the effects of fires on stream ecosystems and found that (1) abiotic indicators were more commonly investigated than biotic ones, (2) most previous research was conducted in North America and in the temperate evergreen forest biome, (3) following a control-impact (CI) or before-after (BA) design, (4) predominantly assessing wildfires as opposed to prescribed fires, (5) in small headwater streams, and (6) with a focus on structural and not functional biological indicators. After quantitatively analyzing previous research, we detected great variability in responses, with increases, decreases, and no changes being reported for most indicators (e.g., macroinvertebrate richness, fish density, algal biomass, and leaf decomposition). We shed light on these seemingly contradicting results by showing that the presence of extreme hydrological post-fire events, the time lag between fire and sampling, and whether the riparian forest burned or not influenced the outcome of previous research. Results suggest that although wildfires and the following hydrological events can have dramatic impacts in the short term, most biological endpoints recover within 5-10 years, and that detrimental effects are minimal in the case of prescribed fires. We also detected that no effects were more often reported by BACI studies than by CI or BA studies, raising the question of whether this research field may be biased by the inherent limitations of CI and BA designs. Finally, we make recommendations to help advance this field of research and guide future integrated fire management that includes the protection of freshwater ecosystems.

Caregivers and Clinic Providers View Soft Casts for Pediatric Hand Burns as Acceptable and Feasible: A Mixed Methods Survey.

Soft casts have been introduced as an efficacious strategy to manage hand burns that simplifies wound care for families. We hypothesized that the outpatient use of soft casts in pediatric hand burns would be viewed as acceptable by patient caregivers and providers, logistically feasible, and result in satisfactory clinical outcomes. A review was performed of pediatric clinic patients managed with soft casts since implementation (9/2022 - 9/2023). Patient caregivers and providers were surveyed. The primary outcome was acceptability of soft casts as a management strategy (questions targeted care burden, overall satisfaction, comfort, pragmatism, and healing concerns). Secondary outcome was feasibility (effect on clinic workflow, efficiency). Survey responses were collected from 70% of caregivers and 95% of providers. Responses overwhelmingly favored soft cast acceptability. Among providers, 84% agreed that "the soft cast method simplified the hand burn care experience in our clinic" and 100% indicated "the soft cast was easy for parents to manage at home" (Likert range 7-10, mode 10). Thirty-three English-speaking patients with partial and full thickness hand burns were managed with soft casts. A mean of 1.8 reapplications (mode 1, range 1-5) were required with median healing time of 13 days. No infections were attributed to the use of soft casting, and only one patient ultimately required grafting. Overall, the introduction of soft casts as a management strategy for pediatric hand burns was acceptable and feasible. The clinical outcomes assessed suggest soft casts are associated with good wound healing with minimal wound care responsibilities for patient and family.

Addressing Burn Hypertrophic Scar Symptoms Earlier: Laser Scar Revision May Begin as Early as 3-6 Months After Injury.

OBJECTIVES: Fractional ablative CO2 laser (FLSR) is used to treat hypertrophic scars (HTSs) resulting from burn injuries, which are characterized by factors, such as erythema, contracture, thickness, and symptoms of pain and itch. Traditionally, waiting a year after injury for scar maturation before starting laser treatment has been recommended; however, the potential benefits of earlier intervention have gained popularity. Still, the optimal timing for beginning laser intervention in patients with HTSs remains uncertain. This study aims to evaluate the ideal timing for the initiation of FLSR for HTSs using several qualitative and quantitative assessment measures. It was hypothesized that early intervention would lead to similar improvement trends as later intervention, however, would be more ideal due to the shortened time without symptom relief for patients. METHODS: Patients who received three or more laser treatment sessions and completed both pre- and posttreatment evaluations were included in this analysis (n = 69). FLSR treatment was administered at 4-8-week intervals. Patients starting treatment before 6 months after injury were classified as the early-stage intervention group and those beginning treatment at 6-12 months after injury were classified as the late-stage intervention group. Demographic data, including the age of patients at the time of first treatment, age of scars at the time of first treatment, biological sex, ethnicity, Fitzpatrick skin type, and use of laser-assisted drug delivery, were collected by retrospective chart review. Patients were evaluated on six subjective scales and objectively for scar stiffness with durometry. For all scales, higher scores indicate worse scars. A two-way ANOVA, Student's t-test, and Mann-Whitney U-test were used to compare scores from the pre- to posttreatment evaluations. RESULTS: There were no significant differences between the groups for any of the demographic or scar-specific variables; thus, differences in outcome can be attributed to the timing of intervention. Both groups demonstrated an improvement in scars with treatment over time (p < 0.05). Both early- and middle-stage initiation showed scar symptom improvement in five out of six scales. In the late-stage intervention, the Patient and Observer Scar Assessment Scale-Patient average score did not show improvement. In the early-stage intervention, the Vancouver Scar Scale total did not show improvement. Quantitative evaluation of scar stiffness by durometry did not show symptom improvement in either group. The Scar Comparison Scale demonstrated the greatest improvement across groups. CONCLUSION: Laser treatment led to scar improvement in at least one scale at each stage of initiation. Both intervention timelines resulted in equivalent outcomes, and early intervention should be considered when initiating FLSR treatment in burn scars to alleviate symptoms earlier.

[CONTACT BURNS WITH A HOT WATER BOTTLE FOLLOWING AN ABDOMINOPLASTY. CASE REPORTS AND LITERATURE REVIEW]. / BRÛLURES PAR CONTACT AVEC UNE BOUILLOTE DANS LES SUITES D'UNE ABDOMINOPLASTIE. CAS CLINIQUES ET REVUE DE LA LITTÉRATURE.

Loss of sensitivity in the operated area is common after some plastic surgery procedures and promotes accidental trauma on a daily basis. Several studies showed that a loss of sensitivity is constant after an abdominoplasty. We report here the cases of three 3rd degree burns by contact, at the subumbilical level, with a hot water bottle soon after an abdominoplasty, responsible for significant aesthetic sequelae.

[CORNEAL BURN: CLINICAL PROFILE, CONTRIBUTION OF ANTERIOR SEGMENT OPTICAL COHERENCE TOMOGRAPHY AND MANAGEMENT - EIGHT CASES]. / BRÛLURE CORNÉENNE : PROFIL CLINIQUE, APPORT DE LA TOMOGRAPHIE PAR COHÉRENCE OPTIQUE DU SEGMENT ANTÉRIEUR ET PRISE EN CHARGE - A PROPOS DE HUIT CAS.

Ocular burns can have three origins: chemical (by acid or alkaline agents), luminous (by ultraviolet radiation) or thermal. We report the cases of eight patients with ocular burns (3 thermal and 5 chemical). Of these, one patient had a grade 2 burn according to the Dua classification, two had grade 3 damage and one had grade 4. One patient had grade 3 damage in the right eye and grade 4 in the left eye. Anterior segment optical coherence tomography (AS-OCT) was performed in two patients, showing corneal de-epithelialization, corneal thickening and a hyper-reflective line in the posterior stroma. All patients received medical treatment with topical antibiotics, topical corticosteroids, cycloplegics and wetting agents. Five patients had outpatient treatment with clinical improvement. Three patients were hospitalized, one of whom received an amniotic membrane graft (AMG), one had an AMG followed by a transfixing keratoplasty (TK), and the other is scheduled for a TK. Ocular burns are associated with significant functional risk, warranting prompt and effective management.

ECONOMIC ANALYSIS OF ENZYMATIC DEBRIDEMENT VERSUS STANDARD BURN CARE: A RETROSPECTIVE ANALYSIS.

When compared to standard surgical management, rapid enzymatic debridement of deep burns reduces the need for surgery while achieving similar long-term results. However, few studies have directly compared the costs of standard surgical and enzymatic burn care. We conducted a study comparing the care costs of 44 adult burn patients treated before (n=22) and after (n=22) introducing rapid bromelain-based enzymatic debridement (BED) of deep burns. Mean age was 59 years, 54% were male, and mean total body surface area (TBSA) was 23.5%. Burn etiology included flame and scalding burns (8). Groups treated with standard of care and enzymatic debridement were comparable in terms of age, sex and TBSA. Burn management with BED significantly reduced total debridement costs as well as grand total costs when compared with traditional surgical care. Such reduction was mostly related to lower costs associated with reduced surgical care and less facilities and resources consumption in the BED group.

Comparativement au traitement standard, l'excision enzymatique précoce (EEP) réduit la nécessité de chirurgie, à résultats égaux à long termes. Très peu d'études ont comparé les coûts de ces deux stratégies. Nous avons comparé 2 groupes de 22 patients profondément brûlés ayant pour l'un été pris en charge conventionnellement, l'autre ayant bénéficié d'une EEP. L'âge moyen était de 59 ans, 54% étaient des hommes, la surface brûlée moyenne de 23,5% (les 2 groupes étaient comparables). Seuls 8 patients avaient été ébouillantés, les autres étant brûlés par flamme. L'utilisation d'EEP réduisait significativement le coût de la prise en charge, en rapport avec la réduction de l'utilisation de locaux et de matériel consécutifs à la chirurgie.

THE EFFECT OF MULTIDRUG-RESISTANT ORGANISM INFECTION ON MORTALITY OF BURN PATIENTS AT RSUPN DR. CIPTO MANGUNKUSUMO.

Susceptibility to infection and increased antibiotic resistance place burn patients at risk of infection caused by multidrug-resistant organisms (MDRO). This condition can progress to sepsis, which can increase morbidity and mortality. A retrospective cohort study using medical record data of patients treated at RSUPN dr. Cipto Mangunkusumo in the period January 2020 to June 2022 was conducted. Of a total 160 subjects in the study period, 82.5% were aged <60 years, 16.88% had comorbidities, the most common cause of burns was fire (86.25%), the use of medical devices was 90.63%, with a median length of stay of 14 days. The most common Gram-negative MDRO pathogens were K. pneumoniae (29.91%), Enterobacter sp (22.32%) and Acinetobacter (20.54%): 45% of MDRO infected patients died. Bivariate analysis was conducted to find the effect of MDRO infection on burn patient mortality (RR 1,103; 95% CI 1,004-1,211, p=0.046). After adjusting for the role variables, namely: age, comorbidities, TBSA, use of medical devices, length of stay and multivariate analysis, it was found that the variables that had an effect on MDRO infection mortality were length of stay and age. MDRO infection has an effect on the mortality rate of burn patients. Mortality of burn patients due to MDRO infection is greater (45%) compared to non MDRO (21.43%). The most common Gram-negative MDRO pathogen is K. pneumoniae.

Leur sensibilité aux infections et l'augmentation globale de la résistance bactérienne font des brûlés des patients particulièrement à risque d'infections par BMR, pouvant déclencher sepsis/choc septique, qui augmentent morbidité et mortalité. Nous avons revu rétrospectivement les dossiers de 160 patients hospitalisés dans l'hôpital national Dr Cipto Mangunkusumo entre janvier et juin 2022. Parmi eux, 82,5% avaient moins de 60 ans ; 16,88% étaient comorbides ; 86,25% avaient été brûlés par flamme ; 90,63% avaient besoin de matériel invasif. La durée médiane de séjour était de 14 j. Les BGN BMR les plus fréquents étaient K. pneumoniæ (29,91%), Enterobacter (22,32%) et Acinetobacter (20,5%). La mortalité des patients infectés à BMR était de 45% (21,43% pour les non-BMR), avec une association significative BMR-mortalité (OR 1,103 ; IC95 1,004-1,211 ; p= 0,046). En explorant en analyse multivariée les variables classiquement associées à la mortalité (âge, comorbidités, surface brûlée, matériel invasif et durée de séjour), âge et durée de séjour contribuaient à la mortalité par BMR.

Thermal Pharyngeal Injury Resulting From Vaping: A Case Report.

Thermal injury to the pharyngeal structures is uncommon, and clinicians generally attribute these injuries to consuming hot foods or liquids. While thermal injuries have been reported with the ingestion of hot substances, thermal injuries from vape pens have not been widely described in the literature. We present a case of a 35-year-old male who presented to the emergency department (ED) with oropharyngeal burns after utilizing a vape pen that malfunctioned. The patient had visible burns on his uvula, as well as on the soft and hard palate. Additionally, he had symptoms of difficulty swallowing and a hoarse voice, which raised concerns about a possible deeper airway or lung injury. The patient required a flexible nasopharyngolaryngoscopy by a head and neck surgeon, which revealed mild edema and erythema of the epiglottis and the arytenoids. The patient was admitted to the hospital overnight for observation and treatment with analgesia and dexamethasone. The following morning, the patient's symptoms had improved. The repeat nasopharyngolaryngoscopy showed improvement in the swelling of the epiglottis and arytenoids, and the patient was deemed stable for discharge. This case brings attention to the variety of injuries possible from e-cigarette use and the importance of prompt management of oropharyngeal thermal injuries.

Genital Burns Are Associated with Worse Psychosocial and Physical Outcomes.

Genital burns are unique and complex injuries that impact patients physically and emotionally. This study investigates the specific impact of genital burns on psychosocial and physical outcomes. A retrospective cohort study was conducted using the TriNetX database, encompassing over 117 million patients from U.S. healthcare institutions. Patients with genital burns were identified and categorized into sub-cohorts based on TBSA and burn degree. Propensity score matching and cohort balancing were performed based on age, gender, race, and ethnicity. Outcomes were analyzed both short-term (1 month) and long-term (5 years), focusing on psychiatric and physical aspects. This study identified 3,496 genital burn patients over a 15-year period. Analyses revealed that genital burns significantly increased short-term risk of death (RR: 2.8), anxiety (RR: 2.656), hospitalization (RR: 2.167), and any anxiety, PTSD, or depression (RR: 2.363), and long-term risk of death (RR: 1.658) and pruritus (RR: 1.58) (all p<0.05). Interestingly, genital burn patients showed a lower risk of chronic joint pain compared to other burn injuries (RR: 0.815) (p<0.05). These results occurred independently of the extent of TBSA. Genital burns have a distinctive impact on patients, leading to higher rates of certain psychiatric morbidities and physical complications. This study highlights the need for tailored care and consideration of the unique challenges faced by patients with genital burns, both in the immediate aftermath and in the long term. Understanding the specific impacts of genital burns is vital for healthcare practitioners to develop care strategies and better support for patients recovering from such injuries.

A Comparison of Racial and Ethnic Disparities in Complications Following Burn Injury in Adult Patients.

Burn injury contributes to significant morbidity and mortality in the United States. Despite an increased focus on racial and ethnic disparities in healthcare, there remains a critical knowledge gap in our understanding of the effect of these disparities on complications experienced by burn patients. The American Burn Association's National Burn Repository data were reviewed from 2010-2018. Information regarding demographics, burn mechanism and severity, complications, and clinical outcomes were recorded. Data analysis was performed using 1:1 propensity-score-matching and logistic regression modeling. A separate analysis of Hispanic and non-Hispanic patients was performed using Chi squared tests. Among 215,071 patients, racial distribution was 65.16% white, 19.13% black, 2.18% Asian, 0.74% American Indian/Alaskan Native, and 12.78% other. Flame injuries were the most common cause (35.2%), followed by scald burns (23.3%). All comparisons were made in reference to the white population. Black patients were more likely to die (OR: 1.28; 95%CI: 1.17-1.40), experience all (OR: 1.08; 95%CI: 1.03-1.14), cardiovascular (OR: 1.24; 95%CI: 1.08-1.43), or infectious (OR: 1.64; 95%CI: 1.40-1.91) complications, and less likely to experience airway complications (OR: 0.83; 95%CI: 0.74-0.94). American Indian/Alaskan Native patients were more likely to experience any complication (OR: 1.33; 95%CI: 1.05-1.70). All minority groups had increased length of hospital stay. Black, Asian, and other patients had longer length of ICU stay. Black patients had longer ventilator duration. Among 82,775 patients, 24,075 patients were identified as Hispanic and 58,700 as non-Hispanic. Statistically significant differences were noted between groups in age, TBSA, proportion of 2nd degree burn, and proportion of 3rd degree burn (p<0.01). These findings highlight the need for further work to determine the etiology of these disparities to improve burn care for all patients.

A Quantitative Review of Certified Burn Therapist's Involvement in the JBCR Publications and ABA Leadership.

The Burn Therapist Certification (BT-C) was introduced in 2018 to acknowledge occupational and physical therapists with specialized knowledge, skill, and experience in promotion of quality burn rehabilitation. Currently, BT-Cs make up 11.7% of therapists working in burn rehabilitation (n=39/333). The purpose of this review is to report on contributions of BT-Cs to organizational leadership of the American Burn Association (ABA) and in the generation of new knowledge through peer-reviewed publications. Despite the small percentage of burn therapists who are certified, they have a disproportionately large involvement in leadership within the ABA and burn research in the Journal of Burn Care and Rehabilitation (JBCR). From 2018-2023, BT-Cs have contributed to nearly one-half (n=26/56) of therapy authored publications in the JBCR and almost one-third (n=65/202) of accepted abstracts at the ABA annual meeting. Certified burn therapists demonstrate substantial involvement throughout the ABA including maintaining an 85% membership rate and on average serve in 53% (n=31/59) of the therapy allotted committee positions. Therapist pursuit of certification can have a profound impact on the burn community through publication, leadership, and development of care standards. Although therapists have indicated a desire to pursue certification, barriers related to a lack of association and center support have been identified. The burn community has endorsed certification as a mark of excellence for nurses and physicians. Maximizing the value of a transdisciplinary approach to burn care is also dependent on excellence from therapies. If the burn community desires improved engagement and contribution from therapies, it should support therapist certification.

Preclinical determination of wound-healing activity of halibut oil cream in rat model of burn wound.

This study investigated the effects of halibut oil cream, containing omega-3 fatty acids, vitamins A and D, and hydroxyproline, on burn wound healing in rats. Acute dermal toxicity tests confirmed its nontoxicity. Wistar rats were divided into five groups: a control, a positive control treated with silver sulfadiazine 1% (SSD), and three groups treated with 3%, 9%, and 27% halibut oil cream Formulation (HBOF). The SSD and HBOF groups showed significant healing improvements compared to the control. Histopathological analysis indicated increased collagen production in the HBOF groups, suggesting halibut oil cream's potential as a topical treatment for burn wounds.

Alpha terpineol preconditioning enhances regenerative potential of mesenchymal stem cells in full thickness acid burn wounds.

Regeneration of full thickness burn wounds is a significant clinical challenge. Direct stem cell transplantation at the wound site has a promising effect on wound regeneration. However, stem cell survival within the harsh wound environment is critically compromised. In this regard, preconditioning of stem cells with cytoprotective compounds can improve the efficiency of transplanted cells. This study evaluated the possible effect of alpha terpineol (αT) preconditioned mesenchymal stem cells (αT-MSCs) in full thickness acid burn wound. An optimized concentration of 10 µM αT was used for MSC preconditioning, followed by scratch assay analysis. A novel rat model of full thickness acid burn wound was developed and characterized via macroscopic and histological examinations. Treatment (normal and αT-MSCs) was given after 48 h of burn wound induction, and the healing pattern was examined till day 40. Skin tissues were harvested at the early (day 10) and late (day 40) wound healing phases and examined by histological grading, neovascularization, and gene expression profiling of healing mediators. In scratch assay, αT-MSCs exhibited enhanced cell migration and wound closure (scratch gap) compared to normal MSCs. In vivo findings revealed enhanced regeneration in the wound treated with αT-MSCs compared to normal MSCs and untreated control. Histology revealed enhanced collagen deposition with regenerated skin layers in normal MSC- and αT-MSC treated groups compared to the untreated control. These findings were correlated with enhanced expression of α-SMA as shown by immunohistochemistry. Additionally, αT-MSC group showed reduced inflammation and oxidative stress, and enhanced regeneration, as witnessed by a decrease in IL-1ß, IL-6, TNF-α, and Bax and an increase in BCL-2, PRDX-4, GPX-7, SOD-1, VEGF, EGF, FGF, MMP-9, PDGF, and TGF-ß gene expression levels at early and late phases, respectively. Overall findings demonstrated that αT exerts its therapeutic effect by mitigating excessive inflammation and oxidative stress while concurrently enhancing neovascularization. Thus, this study offers new perspectives on managing full thickness acid burn wounds in future clinical settings.

The timing of death in burn patients.

Aim: When treating burn patients, some patients die in the chronic phase, even if they overcome the acute phase of the burn. To elucidate the timing of death and its underlying causes among burn patients. Methods: Patients evaluated were admitted to our burn center between January 2015, and December 2019. Patient information, time, and cause of death were retrospectively collected from their medical records. Results: Among 342 admitted patients, 49 died. The time of death was as follows: within 24 h (n = 9), within 3 days (n = 7), within 1 week (n = 5), within 2 weeks (n = 4), within 3 weeks (n = 3), within 30 days (n = 6), within 60 days (n = 5), and after 60 days (n = 9). The causes of death within 3 days were hypoxic encephalopathy, extensive burns (>80%), severe heat stroke, and acute coronary syndrome. The causes of death after 3 days were sepsis, pneumonia, intestinal ischemia, pancreatitis, and worsening of chronic diseases. The mortality rate was similar for patients ≥65 years of age and those with a burn area of ≥20%, with both groups showing a particularly poor prognosis. Conclusions: The timing of death in hospitalized burn patients showed a bimodal distribution as approximately 40% of patients who survived the resuscitation period died after 30 days. Elderly patients were at particularly high risk for mortality. In burn care, treatment planning should consider not only the short-term but also the long-term prognosis.

Regulating Tissue Growth Factors for Healing with Etherified Carboxymethylcellulose Matrix.

Etherified Carboxymethylcellulose Matrix (eCMC) is a revolutionary application of carboxymethylcellulose (CMC) in wound care, known for its potential in hemostasis and tissue regeneration. This study aims to investigate the mechanism of eCMC in tissue healing by establishing a rat burn model and administering eCMC as a treatment. The objective is to analyze cytokines and inflammatory mediators using a Cytokine Array and histochemical staining to understand the effects of eCMC on tissue regeneration. A rat burn model was created, and eCMC was applied as a treatment. Tissue samples were collected at multiple time points to assess the expression of cytokines and inflammatory mediators using a Cytokine Array. Additionally, histochemical staining was performed to evaluate tissue regeneration factors. eCMC induced the expression of endogenous cytokines, particularly VEGF and PDGF, while inhibiting inflammatory cytokines such as CINC-1, CINC-2, and MMP-8. This dual action facilitated wound healing and mitigated the risk of infection. eCMC demonstrates promising potential for enhancing skin regeneration. Further research is warranted to delve into the precise mechanism of eCMC's cytokine regulation. In vitro and in vivo studies should be conducted to comprehensively investigate the therapeutic capabilities of eCMC in wound healing.

The Unhoused Burn Population: An Alarming Increase of Leaving Against Medical Advice.

Unhoused burn patients (UBP) have historically been more likely to leave against medical advice (AMA) and suffer worse health outcomes than the general population. The coronavirus disease 2019 (COVID-19) pandemic created a major strain on the healthcare system, resulting in worse overall health outcomes for burn patients. We sought to investigate how COVID-19 impacted treatment for UBP, specifically the rate of leaving AMA. We conducted a retrospective chart analysis of patients admitted to a regional burn center between June 2015 and January 2023. March 1, 2020, was used as a cut point to separate the cohorts into patients seen pre-COVID-19 (p-CV) and during COVID-19 (CV). Outcomes included leaving treatment AMA and readmission within 30 days. 385 patients met criteria for being unhoused and were included in our analytic sample, of which 199 were in the p-CV cohort and 186 in the CV cohort. UBP were significantly more likely to leave AMA during CV compared to p-CV (22.6% vs. 7.5%, p<0.001). Housed burn patients did not experience an increase in discharges AMA during this time period. The COVID-19 pandemic resulted in an increase in discharges AMA among unhoused patients only. While the etiology is unclear, our findings suggest that this vulnerable patient population is receiving inadequate care post-COVID. Future research should determine the driving force behind these increases and identify early interventions to mitigate them.

The Individual-Level and Community-Level Social Determinants of Burn Injuries: A Single-Institution Study From the Southwestern United States.

Burn injuries are a significant public health concern, causing life-threatening complications and substantial hospitalization costs for patients. It has been shown that burn injuries may affect individuals differently based on demographic factors and socioeconomic status, among other variables. In the Southwestern United States with high ambient temperatures, specific burn etiologies, such as pavement burns, may pose a disproportionately high risk for disadvantaged communities and homeless individuals. This study uniquely explores burn injuries in relation to patients' socioeconomic status in Las Vegas, Nevada by using the Distressed Community Index to quantify socioeconomic status utilizing individual-level and community-level indicators. This single-institution and retrospective study collected data from all patients admitted to a burn center located in Las Vegas. Data were analyzed through Chi-square, one-way ANOVA, and post-hoc analysis with Tukey's test. Patients residing in distressed communities contributed to the greatest number of burn injuries, however there was a lack of significant association between socioeconomic status and burn injury (p = 202). Additionally, specific burn etiologies and demographic characteristics were associated with variations in burn patient hospital course, complications, resources utilized and outcomes. Distressed patients were significantly associated with public insurance (p < 0.001), and public insurance users were associated with pavement burns-one of the most severe burn injuries (p < 0.001). This study emphasizes the importance of developing comprehensive burn prevention resources tailored to vulnerable populations, especially in regions with increased incidence of severe burn injuries, in order to reduce burn burden and mortality.

Metformin is associated with reduced risk of mortality and morbidity in burn patients compared to insulin.

PURPOSE: The standard of care for burned patients experiencing hyperglycemia associated with the hypermetabolic response is insulin therapy. Insulin treatment predisposes burn patients to hypoglycemia, which increases morbidity and mortality. Metformin has been suggested as an alternative to insulin therapy for glycemic control in burn patients given its safety profile, but further research is warranted. This study investigated whether metformin use in burn patients is associated with improved glycemic control and morbidity/mortality outcomes compared to insulin use alone. MATERIALS AND METHODS: Using the TriNetX database, we conducted a retrospective study of burned patients who were administered insulin, metformin, or both within one week of injury. Demographic, comorbidity, and burn severity information were collected. Patients were categorized by treatment type, propensity score-matched, and compared for the following outcomes within 3 months: hyperglycemia, hypoglycemia, sepsis, lactic acidosis, and death. Statistical significance was set a priori at p ≤ 0.05. RESULTS: The insulin cohort was at increased risk for all outcomes (all p < 0.0001) compared to the metformin cohort, and an increased risk for sepsis, lactic acidosis, and death (all p ≤ 0.0002) compared to the insulin/metformin combination cohort. When compared to the metformin cohort, the combination cohort was at increased risk for all outcomes (all p ≤ 0.0107) except death. CONCLUSIONS: Treatment with metformin after burn is associated with a reduced risk of morbidity and mortality compared to insulin. The combination of insulin and metformin is no more effective in reducing the risk of hyperglycemia and hypoglycemia than insulin alone but is less effective than metformin alone.

Microbial infections in burn patients.

Polymicrobial infections are the leading causes of complications incurred from injuries that burn patients develop. Such patients admitted to the hospital have a high risk of developing hospital-acquired infections, with longer patient stays leading to increased chances of acquiring such drug-resistant infections. Acinetobacter baumannii, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Proteus mirabilis are the most common multidrug-resistant (MDR) Gram-negative bacteria identified in burn wound infections (BWIs). BWIs caused by viruses, like Herpes Simplex and Varicella Zoster, and fungi-like Candida spp. appear to occur occasionally. However, the preponderance of infection by opportunistic pathogens is very high in burn patients. Variations in the causative agents of BWIs are due to differences in geographic location and infection control measures. Overall, burn injuries are characterized by elevated serum cytokine levels, systemic immune response, and immunosuppression. Hence, early detection and treatment can accelerate the wound-healing process and reduce the risk of further infections at the site of injury. A multidisciplinary collaboration between burn surgeons and infectious disease specialists is also needed to properly monitor antibiotic resistance in BWI pathogens, help check the super-spread of MDR pathogens, and improve treatment outcomes as a result.