No difference observed in short-interval intracortical inhibition in older burn-injury survivors compared to non-injured older adults: A pilot study

ObjectiveThe study aimed to investigate short-interval intracortical inhibition (SICI) in burns survivors and non-injured controls, and establish whether paired-pulse transcranial magnetic stimulation (TMS) is a sensitive tool to investigate SICI after burn-injury.MethodsBurn survivors underwent experimental assessments at 6- and 12-weeks after injury, and control participants underwent two equivalent sessions 6 weeks apart. Single-pulse transcranial magnetic stimulation (TMS) was used to record motor-evoked potentials (MEPs) from a hand muscle and paired-pulse TMS was used to measure SICI. Functional measures were obtained for comparison at 12-weeks after injury.ResultsThere was no significant difference in SICI between burns survivors and non-injured controls at either 6- or 12-weeks after burn injury. There was no evidence of correlations between SICI and functional outcome measures in burns survivors.ConclusionsThese results show that paired-pulse TMS is a useful method for investigating cortical inhibition following burn injury, and that SICI circuits in the primary motor cortex are not affected by minor burn injury. This study presents details for definitive future studies of primary motor cortex function after minor burn injury.     

Assessment and determinants of global outcomes among 445 mass-casualty burn survivors: A 2-year retrospective cohort study in Taiwan

PurposeTo study outcomes among survivors of the mass-casualty powder explosion on 27 June 2015, at Formosa Fun Coast Waterpark, New Taipei City, Taiwan.MethodsUsing retrospective data on Taiwanese survivors, we analyzed prehospital management, burns assessment and prognosis, functional recovery, and medical costs, followed-up through 30 June 2017. We related outcomes to burn extent, categorized according to the percentages of total body surface area with second/third-degree burns (%TBSA) or autologous split-thickness skin grafts (%STSG), and an investigational scale: f{SASG} = (%TBSA + %STSG)/2, stratified by %STSG. Analyses included casualty dispersal, comparisons between %TBSA, %STSG and f{SASG}, and their relationships with length of hospitalization, times to rehabilitation and social/school re-entry, physical/mental disability, and medical costs. We also investigated how burn scars restricting joint mobility affected rehabilitation duration.Results445 hospitalized casualties (excluding 16 foreigners, 23 with 0% TBSA and 15 fatalities) aged 12–38 years, had mean TBSA of 41.1%. Hospitalization and functional recovery durations correlated with %TBSA, %STSG and f{SASG} – mean length of stay per %TBSA was 1.5 days; more numerous burn scar contractures prolonged rehabilitation. Females had worse burns than males, longer hospitalization and rehabilitation, and later school/social re-entry; at follow-up, 62.3% versus 37.7% had disabilities and 57.7% versus 42.3% suffered mental trauma (all p ≤ 0.001). Disabilities affecting 225/227 people were skin-related; 34 were severely disabled but 193 had mild/moderate impairments. The prevalence of stress-related and mood disorders increased with burn extent. Treatment costs (mean USD-equivalents ∼$48,977/patient, ∼$1192/%TBSA) increased with burn severity; however, the highest %TBSA, %STSG and f{SASG} categories accounted for <10% of total costs, whereas TBSA 41–80% accounted for 73.2%.ConclusionsBesides %TBSA, skin-graft requirements and burn scar contractures are complementary determinants of medium/long-term outcomes. We recommend further elucidation of factors that influence burn survivors’ recovery, long-term physical and mental well-being, and quality of life.     

Health utilities in burn injury survivors: A systematic review

BackgroundAn estimated 11 million burn injuries with medical attention occur every year worldwide. Although potentially deadly, burn injuries are now considered a chronic disease with multiple lifetime physical and psychological sequelae. However, it remains unclear how these events affect patients’ utility scores. We aimed to conduct a systematic review to summarize the utility scores of burn injury survivors.MethodsWe conducted on March 18^th, 2020 a systematic review of the published literature using a search strategy designed in collaboration with a research librarian. Our search strategy aimed to identify studies that provided burn injury survivors’ utility scores via a standardized indirect instrument.ResultsWe identified 15 studies that reported burn injury survivors’ utility scores. Most studies used the EQ-5D instruments to assess patients’ utility scores. Results varied substantially between studies, ranging from a low of 0.06 to a high of 0.972. Our review identified two key trends. First, utility scores seem to be negatively correlated with the severity of the burn injury. Second, utility scores in adults tend to increase in function of the time since injury.ConclusionUnfortunately, due to differences in study design and settings, patient populations and instruments used to assess patients’ utility scores, we were unable to combine all study results into a single value. In spite of this limit, results we identified support previous trends identified by others regarding the relationship between utility scores and the burn injury severity and/or the time since injury.     

Social factors and injury characteristics associated with the development of perceived injury stigma among burn survivors

Improvement in burn survival has shifted the focus of burn care from beyond merely preserving life to improving the quality of life for burn survivors. Healthy psychosocial function is critical to the development of sustained elevations in quality of life after injury, with social and community integration serving a crucial role. Accordingly, the experience of social stigma could pose a significant hindrance to the process of recovery. In this retrospective analysis of patient-reported outcomes following burn injury as captured in the National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR) Burn Model Systems database, we examined the patient and injury characteristics associated with the subsequent experience of social stigma by burn survivors. Using multivariable regression analysis, we found that facial burns and amputations are independent risk factors for experiencing social stigma, while male sex and increased community integration were protective. Taken together, these findings suggest a role for targeted counseling for patients who sustain facial burns and/or amputations, as well as the continued investment in burn-survivor outreach programs aimed at improving social support for survivors.     

Handling traumatic experiences in facially disfigured female burn survivors

BackgroundThis research deals with the impact of resilience, perceived stigmatization, social comfort and coping strategies on quality of life among female burn survivors with facial disfigurement, man many of which are found in Asian countries.MethodsUsing cross-sectional research design, female burn survivors with severe facial disfigurement (N = 100) were drawn by using purposive sampling strategy from a public sector hospital and an organization working in Lahore, Pakistan. Perceived Stigmatization Questionnaire (PSQ) (Lawrence et al., 2006), Social Comfort Questionnaire (SCQ) (Lawrence et al., 2006), State-Trait Resilience Scale, Coping with Burns Questionnaire (CBQ) (Willebrand et al., 2001) and World Health Organization Quality of Life Brief Questionnaire (WHOQOL-BREF Questionnaire; World Health Organization, 2014) were used for assessment.ResultsThe analyses showed a significant positive relationship among resilience, coping with burns and social comfort. A significant negative relationship was found between perceived stigmatization and coping with burns, resilience and social comfort. All these variables were tested for differentiation on the basis of survivor’s age (less vs. more than 30 years), occupation (housewife vs. gainfully employed), education (less vs. more than matriculation), social status (low vs. middle class), family system (nuclear vs. joint), siblings (yes vs. no), residence (living in home vs. shelter home) and psychological help received or not after the burn injury. Results indicate a mixed type of phenomenon among variable’s differentiation. Path analysis through AMOS resulted into a model showing no direct relationship of quality of life with coping with burns, perceived stigmatization and resilience; however, social comfort mediates the relationship between quality of life and coping with burns, perceived stigmatization and resilience.ConclusionIt is found that quality of life is dependent on coping with burns, perceived stigmatization and resilience through social comfort. The findings hold implications for the mental health professionals and rehabilitation service providers to emphasize on the restorative strategy for burn survivors to elevate their social comfort, to assist them in handling their injuries and develop a curative plan to support them in their coping skills.     

Adolescents with and without head and neck burns: comparison of long-term outcomes in the burn model system national database

IntroductionFacial burns account for persistent differences in psychosocial functioning in adult burn survivors. Although adolescent burn survivors experience myriad chronic sequelae, little is known about the effect of facial injuries. This study examines differences in long-term outcomes with and without head and neck involvement.MethodsData collected for 392 burn survivors between 14–17.9 years of age from the Burn Model System National Database (2006–2015) were analyzed. Comparisons were made between two groups based on presence of a head and neck burn (H&N) using the following patient reported outcome measures: Satisfaction with Appearance Scale, Satisfaction with Life Scale, Community Integration Questionnaire, and Short Form-12 Health Survey at 6, 12, and 24 months after injury. Regression analyses were used to assess association between outcome measures and H&N group at 12-months.ResultsThe H&N group had more extensive burns, had longer hospital stays, were more likely to be burned by fire/flame and were more likely to be Hispanic compared to the non-H&N group. Regression analysis found that H&N burn status was associated with worse SWAP scores. No significant associations were found between H&N burn status and other outcome measures.ConclusionsAdolescents with H&N burn status showed significantly worse satisfaction with appearance at 12-months after injury. Future research should examine interventions to help improve body image and coping for adolescent burn survivors with head and neck burns.     

Comparison of the perceived stigmatization measures between the general population and burn survivors in Brazil

ObjectivesTo compare perceived stigmatization, symptoms of depression and self-esteem of adults from Brazilian general population with Brazilian burns survivors and to verify the possible correlations between these populations.MethodThe general population and burn survivors administered the adapted Brazilian versions of the Perceived Stigmatization Questionnaire (BR-PSQ-R), Beck Depression Inventory (BDI) and Rosenberg Self-Esteem Scale (RSES). The Student's t-test for independent samples was employed to identify significant differences between the means of the results from the BR-PSQ-R, BDI and RSES instruments, and the Pearson correlation was used to detect correlations between constructs. The significance level was set at 0.05.ResultsParticipants of this study included: 102 individuals from the general population and 240 burn survivors. The difference between the BR-PSQ-R mean scores of the two groups was not statistically significant (p = 0.077). The mean scores for the BDI (p = 0.001) and RSES (p = 0.001) where found to be lower in the general population, when compared to burn survivors. Moderate correlations were identified between the perceived stigmatization and depression (r = 0.43; p < 0.001) and perceived stigmatization and self-esteem (r = −0.35; p < 0.001).ConclusionsParticipants from the general population and burn survivors exhibit similar levels of perception of stigmatization; the general population presented fewer symptoms of depression and a higher self-esteem when compared to burn survivors.     

Burn survivors injured as children exhibit resilience in long-term community integration outcomes: A life impact burn recovery evaluation (LIBRE) study

IntroductionThere is limited understanding of how burn injuries at different ages are associated with normal growth and development as well as the burn recovery process. This study provides new useful insights by comparing social participation outcomes among burn survivors injured in childhood compared with injuries sustained in middle age, and older adulthood.MethodsItems from the development of the LIBRE profile were administered to 601 adult burn survivors with ≥5% TBSA burned or burns to critical areas (hands, feet, face, or genitals). Each item was answered on a 5-point Likert scale with higher scores denoting better outcomes. Mean scores for the 6 LIBRE profile scales (sexual relationships, family and friends, social interactions, social activities, work and employment, and romantic relationships) were compared between those burned as children (<18 years) and those burned as adults (≥18 years). Regression analyses were used to assess differences between groups with adjustment for demographic and clinical characteristics.ResultsOf the 597 burn survivors having complete data on age at injury, 165 (27.6%) sustained burn injuries as a child. Those burned as children were more frequently female than those burned as adults (57% vs 47%) and were also more frequently white non-Hispanic (89% vs 77%). Marital status and education level were similar in the two groups. Those who were burned as children had slightly higher scores on the social activities, work and employment and romantic relationships scales. However, these differences did not persist in adjusted regression analyses.ConclusionsBurn survivors who sustained injuries as a child fared at least as well as those burned as adults in a broad range of long-term social participation outcomes. The impact on long-term social participation outcomes of burn survivors was not significantly different between individuals with burns sustained during important developmental stages at young ages and those injured later in life.     

Sympathetic skin response in electrical burn injury

BackgroundElectrical burn has been reported to be highly associated with peripheral neuropathy. This study was designed to evaluate the sympathetic skin response (SSR) of electrical burn patients to determine whether the sympathetic nervous system is involved in these patients.Materials and methodsThe sympathetic skin response of 28 patients, suffering from electrical burn injury (divided into two groups of high voltage and low voltage exposure) was compared with that of 28 matched subjects, who had never experienced electrical burn. Bilateral palmar and plantar latency and amplitude of SSR were recorded in response to Median and Tibial nerve electrical stimulation.ResultsSSR in all recording sites of the electrical burn patients compared showed significantly more prolonged latencies and reduced amplitudes, with their counterparts in the control group with no significant difference between the high voltage and low voltage electrical burns. There was no significant difference in SSR latency, between the entry and exit sites of the electrical current. The SSR amplitude however, showed more reduction in right hand than the left one, in whom the electrical current had entered the body from the right hand. The time lapse between the electrical burn and the SSR study was shown to play no role in the results.DiscussionIncreased SSR latency in electrical burn injury may be a sign of autonomic nervous system involvement, through systemic responses to electrical burn.     

The role of burn camp in the recovery of young people from burn injury: A qualitative study using long-term follow-up interviews with parents and participants

BackgroundChildren and adolescents recovering from burn injury are at heightened risk of psychosocial problems. An integrative form of psychosocial intervention is burn camp. However, evidence about burn camp effectiveness is equivocal.ObjectivesThis study examined the role of therapeutic camp experiences in the recovery journeys of children and adolescents who had experienced burn injury and been treated in a tertiary pediatric hospital in Brisbane, Australia.MethodsRetrospective semi-structured interviews were conducted with youths and parents. Inductive reflexive thematic analysis was used with pooled interview data.ResultsThe participants were eight youths who attended at least one burns camp (between 2009 and 2019) and 15 parents of youth campers. An overwhelming majority (96%) reported a positive experience of camp, that they would return, and that they recommended the camp to other youth with burns. The four strengths of the camp experience were fun, adventurous activities; social relatedness (friendships, socializing); camp setting and experience; and acceptance. The four impacts of the camp on youth campers were normalizing (“I’m not the only one”, shared experience); social support (making new friendships, social confidence, mentoring others); psychological recovery (happier, mentally stronger, more resilient, independence building); and confidence (increased self-confidence, increased social confidence, leadership development).ConclusionsAlthough this is the first known research about burn camp in Australia, the findings are similar to a handful of other qualitative studies about burn camp experiences and impacts. Recommendations include future research on aspects of camp experiences that contribute to targeted outcomes, the role of staff and previous camp participants as mentors, and comparisons with other psychosocial interventions for youth burn survivors.     

Coagulation dysfunction of severe burn patients: A potential cause of death

BackgroundResearch on coagulation dysfunction following burns is controversial. This study aimed to describe the coagulation changes in severe burn patients by examining coagulation parameters.MethodsPatients with third-degree total body surface area (TBSA) burns of ≥30% were enrolled between 2017 and 2020. Platelet (PLT) count and coagulation indexes (including APTT, INR, FIB, DD, and AT Ⅲ) were measured at admission and once weekly for 8 weeks, and statistical analysis was performed. The patient medical profiles were reviewed to extract demographic and clinical data, including TBSA, third-degree TBSA, and inhalation injury. The total intravenous fluids and transfusions of crystalloids, fresh frozen plasma (FFP), and red blood cells (RBC) were calculated during the forty-eight-hour period. The number of sepsis cases was recorded.ResultsWe enrolled 104 patients , and while the overall coagulation trend fluctuated, inflection points appeared around one week and demonstrated hypercoagulability. INR was significantly higher in the non-survival group than in the survivors' group from admission to three weeks after burn (all p<0.01). From post-injury week 1 to post-injury week 3, the APTT in the non-survival group was greater than in the survival group, but the non-survival group's PLT count was lower than that in the survival group (all p<0.05). At two and three weeks after burns, the FIB levels in the non-survival group were significantly lower than those of the survival group (both p<0.01). The prevalence of inhalation injury and the proportion of sepsis cases were significantly higher in the non-survival group than in the survival group ( p ＜ 0.05, p ＜ 0.001, respectively). At the time of death, APTT, INR, and FDP levels were significantly higher in the non-survival group in the survivor group, and FIB, ATIII, and PLT were significantly lower than in the survivor group (all p<0.01). On the day of death, nine of the 12 dead patients had disseminated intravascular coagulation (DIC).ConclusionsCoagulation dysfunction was most prominent in severe burn patients 1 week after injury and presented as hypercoagulability. Large-area burn injury, large amounts of fluid resuscitation, inhalation injury, and sepsis may all contribute to coagulation dysfunction, which can further develop into DIC and even death in severe burns patients.     

Neuromuscular effects of mivacurium in 2- to 12-yr-old children with burn injury

BACKGROUND: Burned patients are usually resistant to the neuromuscular effects of nondepolarizing relaxants, mostly because of receptor changes. The magnitude of the resistance is related to burn size and time after burn. Mivacurium is a muscle relaxant, degraded by plasma cholinesterase, whose enzyme activity is decreased in burns. The present study tested the hypothesis that burn-induced depressed plasma cholinesterase activity counteracts the receptor-mediated resistance, resulting in a lack of resistance to mivacurium. METHODS: Burned patients (n = 23), aged 2-12 yr, subclassified into burns of 10-30% or > 30% of body surface, were studied at < or = 6 days and again at 1-12 weeks after burn if possible. Thirteen additional patients served as controls. Neuromuscular variables monitored included onset and recovery following bolus dose, continuous infusion rates required to maintain 95 +/- 4% paralysis, and recovery rates following infusion. RESULTS: The onset times of maximal twitch suppression were not different between burns and controls, but recovery to 25% of baseline twitch height was prolonged in patients with > 30% burn irrespective of time after injury. The continuous infusion rates to maintain twitch suppression at 95 +/- 4% were not different between groups. The recovery indices, including train-of-four to > 75%, 25-75%, or 5-95% in burned patients, were similar or prolonged compared with controls. The prolonged recovery in burned patients was inversely related to plasma cholinesterase activity (R2 = 0.86, r = -0.93, P < 0.001), and the decreased plasma cholinesterase activity was related to burn size and time after burn. CONCLUSIONS: A normal mivacurium dosage (0.2 mg/kg) effects good relaxation conditions in burned patients, with an onset time similar to that in controls. This finding contrasts with the response seen with other nondepolarizing drugs, higher doses of which are required to effect paralysis. The decreased metabolism of mivacurium, resulting from depressed plasma cholinesterase activity, probably counteracts the receptor-mediated potential for resistance. Because succinylcholine is contraindicated in burned patients, larger doses of nondepolarizing agents are advocated to effect rapid onset of paralysis. This generalization does not hold for mivacurium. diatrics; plasma cholinesterase; relaxant resistance; succinylcholine, alternative to.)     

The effect of neighborhood Area Deprivation Index on residential burn injury severity

IntroductionResidential fires account for the majority of burn-related injuries and fatalities. Established risk factors for burn injury include male gender, racial minority, children and elderly individuals, poverty, and substandard housing characteristics. In North Carolina, the rate of residential fire injuries and deaths is higher than the national average. Therefore, we sought to describe residential fire hospitalizations at a large regional burn center and describe the neighborhoods in which they live. We hypothesized that patients living in areas with higher Area Deprivation Index (ADI) are more likely to have major residential burns.MethodsWe conducted a retrospective analysis of burn admissions from January 2002 to December 2015. We dichotomized patients into two cohorts: residential and non-residential burns and performed a bivariate analysis. Multivariate Poisson regression models were utilized to determine if ADI was associated with inhalation injury and ≥20% total body surface area burn.ResultsOf the 10,506 patients presented during the study period. Of these, 10,016 (95.3%) patients resided in North Carolina, and 7894 (78.8%) had a residential burn. Of the overall cohort, 6.0% (n = 458) of patients had ≥20% TBSA burns and 6.4% (n = 506) had inhalation injury. The majority of patients were in the highest (most disadvantaged) ADI quartile (n = 3050, 39.5%), and only 6.8% of patients (n = 525) were in the lowest (least disadvantaged) ADI quartile. In the Poisson multivariate regressions to determine if the ADI was associated with severe burns, patients in the highest ADI quartile had an increased relative risk of ≥20% TBSA burn (RR 1.31, 95% CI 1.02–1.68) and inhalation injury (RR 1.39, 95% CI 1.09–1.76) when compared to patients in the second-lowest ADI quartile when controlled for pertinent covariates.ConclusionResidential structure fires represent the major source of burns and fatalities. People who reside in the highest ADI quartile are more like to present with higher burn injury severity in terms of burn size and the presence of inhalation injury. The use of the ADI to target neighborhoods for burn prevention is imperative.     

Burn severity and long-term psychosocial adjustment after burn injury: The mediating role of body image dissatisfaction

BackgroundPersons with severe burns often develop long-term psychosocial difficulties such as posttraumatic stress disorder (PTSD) and depression. Significant appearance changes following burn injury (e.g., scarring and disfigurement) can lead to body image dissatisfaction (BID) that causes psychological problems. Using a two-wave longitudinal design, this study examined the association between burn severity and psychosocial adjustment after burns (symptoms of PTSD and depression), particularly through the mediating role of BID.MethodParticipants were 111 burn survivors of the 2015 Formosa Fun Coast Water Park explosion. The mean age was 24.23 years, and 62.2% were female. The average TBSA burned was 50.3%, and the mean length of stay (LOS) in hospital was 85.44 days. Data were collected two (Time 1, T1) and three years (Time 2, T2) after the 2015 explosion. A composite burn severity score (CBSS) was additionally created based on TBSA and LOS.ResultsThree main findings emerged: (1) burn severity (TBSA, LOS, and CBSS) were significantly associated with T1 BID and T2 depressive symptoms, but not with T2 PTSD symptoms; (2) T1 BID significantly mediated the relationship between burn severity (TBSA and CBSS) and T2 PTSD symptoms, after controlling for T1 PTSD symptoms; and (3) T1 BID significantly mediated the relationship between burn severity (TBSA, LOS, and CBSS) and T2 depressive symptoms, after controlling for T1 depressive symptoms.ConclusionsThe current findings highlight the importance of BID in the development and maintenance of psychosocial maladjustment long after burn injury.     

Defining numerical cut points for mild,moderate, and severe pain in adult burn survivors: A northwest regional burn model system investigation

IntroductionPain is a common and often debilitating sequela of burn injury. Burn pain develops following damage to peripheral sensory nerves and the release of inflammatory mediators from injury. Burn pain is complex and can include background and procedural pain that result from the injury itself, wound care, stretching, and surgery. Clinicians and researchers need valid and reliable pain measures to guide screening, treatment, and research protocols. Unlike other conditions, visual analog, or numeric pain rating scale (VAS/NRS) scores that represent mild, moderate, and severe pain among people with burn injury have not been established. The aim of this study was to identify the most suitable average pain intensity rating scores for mild, moderate, and severe pain in adult burn survivors using a PROMIS Pain Interference (PROMIS-PI) short form.MethodsAn average pain intensity VAS/NRS score (0?10) and customized PROMIS-PI short form were administered to adults with burn injury treated at a regional burn center at hospital discharge (baseline) and at 6, 12, and 24-months after injury. To identify pain intensity scores that represent mild, moderate, and severe pain, we computed F values and Bayesian Information Criterion (BIC) statistics associated with multiple ANOVA comparisons for mean pain interference scores by various pain intensity cut points. Six possible cut points (CP) were compared: CP 3,6; 3,7; 4,6; 4,7; 2,5; and 3,5. Optimal cut points were considered those with the highest ANOVA F statistics. Models with similar F statistics were also compared with BIC.ResultsData from a sample of 253 participants (83% white, 66% male, mean age 47 years) with VAS/NRS pain intensity and PROMIS-PI scores at one or more timepoints were analyzed. The optimal classification for mild, moderate, and severe pain was CP 2,5 at baseline and 12-months. Although CP 3,6 had the highest F value at 6-months, there was not strong evidence to support CP 3,6 over CP 2,5 (BIC difference: 2.9); similarly, CP 3,7 had the highest value at 24-months, but the BIC difference over CP 2,5 was only 2.2.ConclusionsVAS/NRS scores for pain among adults with burn injury can be categorized as mild (0?2), moderate (3?5), and severe (6?10). These findings advance our understanding regarding the meaning of pain intensity ratings after burn injury, and provide an objective definition for clinical management, quality improvement, and pain research.     

Predictors of multi-drug resistance in burn wound colonization following burn injury in a resource-limited setting

IntroductionBacterial resistance to antibiotics is growing dramatically worldwide due to several contributing factors, including inappropriate antibiotic utilization in the clinical setting and widespread use in the food production industry. Consequently, it is imperative to characterize antibiotic resistance in high-risk populations, such as burn patients, particularly in resource-limited settings where prevention strategies may be high-yield and new antibiotics are not readily available. We therefore sought to characterize and identify predictors of multi-drug resistant (MDR) bacteria colonization in burn patients at our center in Malawi.MethodsThis is a prospective analysis of burn patients presenting to Kamuzu Central Hospital in Lilongwe, Malawi within 72 h of burn injury. A swab of each patient’s primary wound was collected at admission and each subsequent week. The primary aim was to determine predictors of colonization in burn wounds with multi-drug resistant bacteria using modified Poisson regression modeling.Results99 patients were enrolled and analyzed. The median age was 4 years (IQR 2–12) with a median % total burn surface area (TBSA) of 14% (IQR 9–25). The most common burn injury type was scald (n = 61, 61.6%), followed by flame (n = 37, 37.4%). Overall, 54 patients (54.6%) were colonized with MDR bacteria at some point during their hospitalization, with increases each week. For flame burns, the predictors of MDR bacterial colonization were each 1% increase of %TBSA (RR 1.01, 95% CI 1.00, 1.03, p = 0.038) and the use of operative intervention for burn treatment (RR 1.90, 95% CI 1.17, 3.09, p = 0.010). No variables were predictive of MDR wound colonization in scald burns.ConclusionOur study identified that almost half of the patients in a Malawian burn unit had MDR bacteria colonizing burn wounds after only a week in the hospital. This increased to almost 70% during hospitalization. We also found that for patients with flame burns, increasing %TBSA, and operative intervention put patients at greater risk of MDR colonization. Interventions such as isolation of burn patients, consistent disinfection and sterilization of wards and operating rooms, and optimization of wound care management are imperative to decrease spread of MDR bacteria and to improve burn-associated clinical outcomes in resource-limited environments.     

Effect of burn depth upon oedema formation and albumin extravasation in rats

Studies to determine the influence of burn depth upon albumin extravasation and oedema formation were conducted in 90 Sprague-Dawley rats. Oedema formation and protein leakage were studied at 30 min, 3 h and 12 h after injury. The burns were induced with a constant temperature heating element designed to produce tiny (02 per cent) non-contact radiant heat burns (Fig. 1). The depth of the burn was controlled by varying the exposure time (8, 12, 16 and 24 s). Oedema occurred rapidly and was of similar magnitude for all burn depths at 30 min and 3 h after injury but it was more marked in the deeper burns at 12 h (P < 0-01). RISA¹³¹1 extravasation was more prominent in the 24-s than in the 8-s burn at 30 min after injury (P < 0-01) but no significant differences between burns of different depths were detected thereafter (Fig. 5). No oedema or RISA¹³¹I leakage occurred in areas distant to the burn. On the basis of these studies it seems unimportant for the purpose of fluid resuscitation and protein replacement in burned victims, to differentiate between partial- and full-thickness injuries.