Are acute burn injuries associated with long-term mortality? A systematic review and meta-analysis

Top ten research priorities in global burns care: findings from the James Lind Alliance Global Burns Research Priority Setting Partnership

Burns are a global issue that can result in lifelong multimorbidities and disproportionately affect people in low-resource settings. Prioritising research of importance to patients and health-care professionals improves evidence-based care. This prioritisation setting partnership was undertaken in global burn care (focusing on thermal non-electrical burns) by establishing a James Lind Alliance research priority setting partnership. Over 2 years, two online multilingual surveys with patients, carers, and clinicians, 16 interviews, and a virtual priority setting workshop were conducted to identify and prioritise questions for research. Survey responses were received from participants in 88 countries (1617 survey one respondents; 630 survey two respondents). A short-list of 19 research priorities were ranked at an online workshop attended by 28 participants (14 health-care professionals, ten burn survivors, and four carers or advocates) from 15 countries to produce the final top ten research priorities. These priorities provide opportunities for researchers, funders, and clinicians to shape the future of burns research and improve burns care globally.

Distinct Transcriptome Signatures Associated With Mortality and Prolonged Recovery Following Burn Injury

A dysregulated immune response after severe burn injury is associated with detrimental short and long-term clinical outcomes. Key changes to gene expression within the first 24 h after burn injury have been identified, but longitudinal data is lacking. Therefore, this study aims to characterize gene expression during the first 3 weeks after burn injury and identify specific genes and pathways associated with distinct clinical outcomes. Patients presenting within 4 h of injury had blood RNA isolated for microarray gene expression at admission and set timepoints to 21 days. Inter- and intra-group comparisons were performed between 4 groups (G1 died within 7 days; G2 died after 7 days; G3 discharged after 7 days; and G4 discharged within 7 days). A total of 17 289 transcripts were quantified from 116 patients. At admission, there were 110, 80, and 31 differentially expressed genes in G1, G2, and G3, respectively, compared to G4, and were largely nonoverlapping. Longitudinal intra-group analyses also showed distinct group- and time-dependent patterns. Upregulation of genes and pathways related to the innate immune response and unfolded protein response predominated during early time points, while persistent upregulation of coagulation pathways and downregulation of immune-related pathways were identified days to weeks following injury. Overall, burn injury induces widespread transcriptomic responses, with larger and more sustained changes observed in patients with worse clinical outcomes. These gene expression signatures reveal underlying molecular mechanisms that occur immediately following injury and may have prognostic and diagnostic utility in the care of burn-injured patients.

Impact of dysglycemia during the ebb and flow phases of critically ill burn patients: An observational study

BACKGROUND

Critically ill burn patients face severe metabolic stress, divided into early ebb and late flow phases, causing dysglycemia. While detrimental effects of hyper- and hypoglycemia in burn patients have been reported over the entire stay, its impact during the ebb and flow phases remains unexplored. This study is the first to investigate phase-separated dysglycemia for outcome prediction.

METHODS

This retrospective, single-center observational study examined burn ICU patients between 2009 and 2022. Non-severe (ABSI<7) and severe (ABSI≥7) burn patients were investigated separately. Furthermore, the effect of low (<50 %) versus high (≥50 %) dysglycemic rates (<70 or >140 mg/dL) was evaluated within the ebb and flow phases. Dysglycemia was calculated using the time-unified rate, an innovative method representing blood glucose over time. The primary outcome of this study was mortality.

RESULTS

This study included 67 non-severe and 101 severe burn patients. During the flow compared to the ebb phase, non-severe burn patients showed increased hyperglycemic rates (>140 mg/dL, p = 0.027) and mean blood glucose levels (p = 0.003), while severe burn patients showed increased glycemic variability (p < 0.001) and hypoglycemic rates (<70 mg/dL, p = 0.003). Non-severe burn patients with high dysglycemic rates showed increased length of ICU stay (ebb: p = 0.029, flow: p = 0.040) and pneumonia incidence (ebb: p = 0.005, flow: p = 0.002) compared to patients with low dysglycemic rates. High dysglycemic rate was associated with higher mortality in severe burn patients (ebb: p = 0.027, flow: p = 0.008). Multivariate logistic regression revealed that hyper- (OR: 1.034, 95 %-CI: [1.001-1.068], p = 0.045) and hypoglycemic rates (OR: 1.744, 95 %-CI: [1.180-2.577], p = 0.005) during the flow, but not the ebb phase, predicted mortality in severe burn patients.

CONCLUSIONS

This study suggests that increased dysglycemic rate plays a relevant role in both non-severe and severe burn patients, with a varying impact. Over time, the flow phase was characterized by higher glycemic variability as well as hyper- and hypoglycemic rates, with the latter two predicting mortality in severe burn patients. While larger cohorts are needed to confirm these findings, the data indicate that reducing the dysglycemic rate, particularly during the flow phase, could improve outcomes in critically ill burn patients.

Accelerated epigenetic ageing after burn injury

Individuals who suffer a major burn injury are at higher risk of developing a range of age-associated diseases prematurely leading to an increase in mortality in adult and juvenile burn injury survivors. One possible explanation is that injury is accelerating the biological ageing process. To test this hypothesis, we analysed DNA methylation in peripheral blood mononuclear cells from adult burn-injured patients (> 5%TBSA) upon admission to hospital and 6 months later, to calculate an epigenetic clock value which can be used to determine biological age. Fifty-three burn-injured participants (mean age 45.43 years, 49 male, mean TBSA 37.65%) were recruited at admission and 34 again 6 months post injury (mean age 40.4 years, 34 male, mean TBSA 30.91%). Twenty-nine healthy controls (mean age 43.69 years, 24 male) were also recruited. Epigenetic age acceleration at admission by PhenoAge was + 7.2 years (P = 8.31e-5) but by month 6 was not significantly different from healthy controls. PCGrimAge acceleration was + 9.23 years at admission (P = 5.79e-11) and remained 4.18 years higher than in controls by month 6 (P = 2.64e-6). At admission, the burn-injured participants had a Dunedin PACE of ageing score 31.65% higher than the control group (P = 2.14e-12), the equivalent of + 115 days per year of biological ageing. Six months post injury the Dunedin PACE of ageing remained significantly higher (+ 11.36%, 41 days/year) than in the control group (P = 3.99e-5). No differences were seen using the Horvath and Hannum clocks. Enrichment analysis revealed that key pathways enriched with burn injury related to immune function, activation, and inflammation. The results reveal that epigenetic age, specifically the PACE of ageing and PCGrimAge, was accelerated in burn-injured adults at admission, with some return towards control values by 6 months. That these two clocks are built upon morbidity outcomes suggests that the injury is invoking a biological response that increases the risk of disease. Burn injury in adults induces epigenetic changes suggestive of an acceleration of the ageing process, which may contribute to the increased morbidity and mortality in these patients.

Treatment outcome and associated factors of burn injury in Ethiopian hospitals: A systematic review and meta-analysis

Introduction

Burn injuries impose a substantial burden globally, particularly in low- and middle-income countries like Ethiopia, where the impact is pronounced. Despite existing studies on individual patient data, there 's a lack of synthesized evidence on burn injury mortality in Ethiopia. This study aimed to evaluate the combined prevalence of burn-related mortality and its determinants in Ethiopian hospitals.

Methods

A systematic search of various databases yielded 11 relevant studies, which were included in the analysis. Data extraction and quality assessment were conducted using Microsoft Excel 2021 and the Newcastle-Ottawa Scale, respectively. Statistical analyses were performed using STATA version 17 software.

Result

The pooled mortality rate among burn patients in Ethiopian hospitals was determined to be 6.99% (95% CI: 4.8, 9.41). Factors significantly associated with mortality included inadequate resuscitation (Adjusted Odds Ratio (AOR) 3.73, 95% CI: 1.31, 10.58), pre-existing illness (AOR: 5.26, 95% CI: 2.12, 13.07), age <5 or >60 (AOR: 2.22, 95% CI: 1.45, 3.40), and burn injury >20% total body surface area (AOR: 5.17, 95% CI: 2.47, 10.80).

Conclusion

The findings underscore a notably high prevalence of burn-related mortality in Ethiopia, with inadequate fluid resuscitation, pre-existing illness, extreme age, and the extent of injury identified as key determinants. Collaboration among healthcare stakeholders and policymakers is imperative to improve burn care services and mitigate the impact of these injuries. This study was registered with PROSPERO (CRD42023494159), providing a comprehensive overview of burn injury mortality in Ethiopia.

Lay Summary

Burn injuries are a significant health concern globally, particularly in low- and middle-income countries like Ethiopia. Despite the existing studies on burn injuries, there's a lack of synthesized evidence on burn injury mortality in Ethiopia. This study aimed to evaluate the combined prevalence of burn-related mortality and its determinants in Ethiopian hospitals.The study systematically reviewed 11 relevant studies and conducted a meta-analysis to determine the prevalence of burn injury mortality and associated factors. The pooled mortality rate among burn patients in Ethiopian hospitals was found to be 6.99%. Factors significantly associated with mortality included inadequate resuscitation, pre-existing illness, age <5 or >60, and burn injury >20% total body surface area.The findings underscore a notably high prevalence of burn-related mortality in Ethiopia, highlighting the need for comprehensive and effective treatment approaches. Inadequate fluid resuscitation, pre-existing illness, extreme age, and the extent of injury were identified as key determinants of mortality. Addressing these factors is crucial for improving burn care outcomes and reducing the burden of burn injuries in Ethiopian hospitals.This study provides valuable insights for healthcare professionals, policymakers, and researchers working towards improving burn injury outcomes in Ethiopia. By understanding the factors influencing treatment outcomes, healthcare stakeholders can refine treatment protocols, enhance resource allocation, and implement preventive measures to reduce the burden of burn injuries in Ethiopian hospitals.

The national burden of mortality and its associated factors among burn patients in Ethiopia. A systematic review and meta-analysis

BACKGROUND

Despite all advances in burn prevention, treatment, acute care, and rehabilitation, burn injuries continue to cause significant mortality and disability in Ethiopia. Thus, this review and meta-analysis aimed to assess the pooled prevalence and the determinants of mortality in Ethiopia.

METHODS

This systematic review was conducted according to the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). A structured search of databases (Medline/PubMed, Google Scholar, CINAHL, EMBASE, HINARI, and Web of Science) was undertaken. Selection, screening, reviewing, and data extraction were done by independent reviewers using a Microsoft Excel spreadsheet. The quality of the included studies was assessed using the Joanna Briggs Institute (JBI) critical appraisal tool. A random-effects meta-analysis model with a 95 % confidence interval was computed to estimate the pooled effect size (i.e., prevalence and odds ratio). Publication bias was checked using the funnel plot, Egger's, and Begg's tests. The heterogeneity of studies was assessed using I2 statistics. Subgroup analysis based on the region and age group was done.

RESULTS

This systematic review and meta-analysis included a total of ten studies. The pooled prevalence of mortality among patients with burn injuries in Ethiopia was found to be 6.01 % (95 % CI: 2.75, 9.26). Subgroup analysis based on the region showed that the pooled prevalence of mortality was highest in the Oromia region (12.02 %), followed by the Amhara region (8.5 %). Additionally, subgroup analysis based on patients' ages revealed that the pooled estimates of mortality among all age groups and children were 5.18 % and 7.91 %, respectively. The meta-analysis demonstrated that the extent of burn > 10 % TBSA (OR = 5.04, 95 % CI: 2.72, 9.35), presence of comorbidity (OR = 4.01, 95 % CI: 1.44, 11.18), and presence of a 3rd degree burn (OR = 10.64, 95 % CI: 2.82, 40.16) were significantly associated with mortality among burn patients.

CONCLUSION AND RECOMMENDATIONS

The national prevalence of mortality among burn patients in Ethiopia was high. The extent of burn, presence of comorbidity, and 3rd degree burns were significant predictors of mortality. We strongly recommend that health care workers give special attention to burn patients with greater extent and depth of burn, and for those who have comorbid diseases.

Current Approaches to Wound Repair in Burns: How far Have we Come From Cover to Close? A Narrative Review

Burn injuries are a significant global health concern, with more than 11 million people requiring medical intervention each year and approximately 180,000 deaths annually. Despite progress in health and social care, burn injuries continue to result in socioeconomic burdens for victims and their families. The management of severe burn injuries involves preventing and treating burn shock and promoting skin repair through a two-step procedure of covering and closing the wound. Currently, split-thickness/full-thickness skin autografts are the gold standard for permanent skin substitution. However, deep burns treated with split-thickness skin autografts may contract, leading to functional and appearance issues. Conversely, defects treated with full-thickness skin autografts often result in more satisfactory function and appearance. The development of tissue-engineered dermal templates has further expanded the scope of wound repair, providing scar reductive and regenerative properties that have extended their use to reconstructive surgical interventions. Although their interactions with the wound microenvironment are not fully understood, these templates have shown potential in local infection control. This narrative review discusses the current state of wound repair in burn injuries, focusing on the progress made from wound cover to wound closure and local infection control. Advancements in technology and therapies hold promise for improving the outcomes for burn injury patients. Understanding the underlying mechanisms of wound repair and tissue regeneration may provide new insights for developing more effective treatments in the future.

Global epidemiology of geriatric burns, capacities of care, and injury outcomes: Perspectives from the World Health Organization global burn registry

BACKGROUND

An increasing aging population alongside a potentially increasing injury risk emphasizes a critical need for evidence-based burn care regarding preventive and therapeutic strategies tailored to the unique needs of older adults. However, we note a critical gap in understanding geriatric burn trends on a global scale and the care capacity across settings. Thus, this study sought to ascertain the global trend of geriatric burns with a focus on patient demographics, injury characteristics, capacities of care, and injury outcomes.

METHODS

A retrospective design focusing on older adults aged ≥ 60 years with burns recorded in the World Health Organization Global Burn Registry as of 31st May 2023 was employed. Descriptive statistics were employed to analyze the data.

RESULTS

Of the 9277 records obtained from the Global Burn Registry, 849 participants (9.2%) were aged ≥ 60 years with the majority of these reported from the Eastern Mediterranean (EMRO) and Southeast Asia (SEARO) regions. More females than males were involved in burn injuries with the most common aetiological factor being flame. Most burns occurred in the home/ domestic setting with a seasonal variation (more injuries occurred in December and January). In terms of burn care capacity, the data suggest the availability of specialized services in most settings albeit the AFRO and SEARO regions still lacked the resources to offer specialized burn care. While most injured older adults were discharged home with no physical impairment (395, 46.5%), a substantial number died (250, 29.4%) during hospitalization, particularly in the African (AFRO) region and 111 (11.1%) left the facility against medical advice with the majority from the SEARO region (88).

CONCLUSION

Burn injuries in older adults remain a public health issue. On the preventive aspect, the results demonstrate a need to intensify safety in the home or domestic setting, and during festive seasons. Therapeutically, the findings underscore a need to consider the inclusion of more specialist geriatric and palliative care services in the burn management process. Additionally, we identified a need to strengthen burn care capacity in the AFRO and SEARO regions.

Impact of childhood burns on academic performance: a matched population-based cohort study

OBJECTIVE

This study aimed to compare academic performance and high school completion of young people hospitalised for a burn compared with young people not hospitalised for an injury.

DESIGN

A retrospective population-based matched case-comparison cohort study.

PARTICIPANTS

Young people aged ≤18 years hospitalised for a burn during 2005-2018 in New South Wales, Australia, with age, sex and residential postcode-matched peers not hospitalised for any injury during 1 July 2001 and 31 December 2018.

MAIN OUTCOME MEASURES

Performance below the national minimum standard (NMS) on the National Assessment Plan for Literacy and Numeracy assessments and not completing high school.

RESULTS

Young females hospitalised for a burn had a 72% higher risk of poorer reading compared with their peers (adjusted relative risk (ARR) 1.72; 95% CI 1.33 to 2.23), while young males hospitalised with a burn showed no higher risk (ARR 1.14; 95% CI 0.91 to 1.43). Young males (ARR 1.05; 95% CI 0.81 to 1.35) and females (ARR 1.34; 95% CI 0.93 to 1.94) hospitalised with a burn had no higher risk of not reaching the NMS for numeracy compared with peers. Young people hospitalised with a burn had at least twice the risk of not completing year 10 (ARR 3.86; 95% CI 1.68 to 8.86), year 11 (ARR 2.45; 95% CI 1.89 to 3.18) and year 12 (ARR 2.09; 95% CI 1.63 to 2.67) compared with matched counterparts.

CONCLUSIONS

Young females hospitalised with a burn displayed poorer academic performance for reading compared with matched peers, while males and females were more likely to leave school earlier. Identifying unmet learning support needs of young burn survivors should be investigated.