Plasma Ameliorates Endothelial Dysfunction in Burn Injury.

BACKGROUND: A complex inflammatory response mediates the systemic effects of burn shock. Disruption of the endothelial glycocalyx causes shedding of structural glycoproteins, primarily syndecan-1 (SDC-1), leading to endothelial dysfunction. These effects may be mitigated by resuscitative interventions. MATERIALS AND METHODS: Sprague-Dawley rats were used to create small, medium, and large burns and uninjured controls. Three different intravenous resuscitation protocols were applied within each group: Lactated Ringer's (LR) alone, LR plus fresh frozen plasma (FFP), or LR plus albumin. Blood was serially collected, and plasma SDC-1 was quantified with enzyme-linked immunosorbent assay. In one cohort, Evan's Blue Dye (EBD) was administered and quantified in lung by spectrophotometry as a functional assay of vascular permeability. In a second cohort, intact SCD-1 was quantified by immunohistochemistry in lung tissue. Statistical analysis employed two-way analysis of variance with multiple comparisons and Student's t-test. RESULTS: EBD extraction from lung was significantly greater with higher injury severity versus controls. Extraction decreased significantly in large-burn animals with addition of FFP to LR versus LR-only; addition of albumin to LR did not decrease EBD extraction. Plasma SCD-1 increased in injured animals compared with controls, and changes correlated with injury severity in all resuscitation groups (significance, P < 0.05). Lung SCD-1 staining reflected the results in the EBD assay. CONCLUSIONS: Addition of FFP, not of albumin, to post-burn resuscitation diminishes vascular leakage associated with large burns. Addition of colloid does not affect SDC-1 shedding as measured in plasma. Ongoing work will further define pathophysiologic mechanisms and potential therapeutic interventions to mitigate injury and promote repair of the endothelial glycocalyx.

Recommendations for Prevention of Drug Re-Exposure in Toxic Epidermal Necrolysis

Drug re-exposure resulting in Stevens-Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN) is a rare phenomenon and has scarcely been reported. With an aging population, polypharmacy, and a lack of a unified electronic medical record, standard recommendations to prevent or minimize the risk of re-exposure are necessary. We identified five patients, with diagnosis confirmed SJS/TEN, and determined the clinical characteristics and contributing risk factors leading to re-exposure. Polypharmacy, multiple prescribers, advanced age, medical illiteracy, retention of discontinued medications and self-prescribing all contributed to re-exposure in this cohort of patients. This case series demonstrates the potentially deadly effect of drug re-exposure, and the need for both streamlined and integrated medication allergy documentation systems. J Drugs Dermatol. 2019;18(10):1049-1052.

Technical Considerations for Implementation of Tele-Ethics Consultation in the Intensive Care Unit.

BACKGROUND: Robust ethics consultation services cannot be sustained by all hospitals; consultative service from a high-volume center via teleconferencing is an attractive alternative. This pilot study was conceived to explore the feasibility and understand the practical implications of offering such a service. METHODS: High-definition videoconferencing was used to provide real-time interaction between the rounding clinicians and a remote clinical ethicist. Data collection included: (1) evaluation of the hardware and software required for teleconferencing, and (2) comparison of ethics trigger counts between the remote and on-site ethicist during rounds. RESULTS: Issues with audio represented the majority of technical problems. Once technical difficulties were addressed, the on-site ethicist's count of "triggers" was not statistically different from the count of the remote ethicist. CONCLUSION: Remote clinical ethics rounding is feasible when the equipment is optimized. Remote ethicists can identify similar numbers of "triggers" for possible ethical issues when compared to on-site ethicist numbers.

Graft loss: Review of a single burn center's experience and proposal of a graft loss grading scale.

BACKGROUND: There exists neither a consensus definition of burn "graft loss" nor a scale with which to grade severity. We introduced an institutional scale in 2014 for quality improvement. MATERIALS AND METHODS: We reviewed all burned patients with graft loss on departmental Morbidity and Mortality reports between July 2014 and July 2016. Graft loss grades were assigned during the course of clinical care per institutional scale. Chronic nonhealing wounds and nonburn wounds were excluded. Data abstracted included demographics, medical history, injury details, surgical procedures, graft loss, and lengths of stay (LOS). Photos of affected areas were graded by two blinded surgeons, and a linear weighted κ was calculated to assess interrater agreement. RESULTS: Graft loss was noted in 50 patients, with 43 remaining after exclusions. Mean age was 50.1 y. The majority were male (58.1%) and African American (41.9%). Smoking (30.2%) and diabetes (27.9%) were prevalent. Total body surface area involvement ranged from 0.5% to 51.0% (11.8 ± 12.3%). Grade I graft loss was documented on one patient (2.3%), Grade II in 15 (34.9%), Grade III in 12 (27.9%), and Grade IV in 15 (34.9%). Reoperation was performed in 20 (46.5%). Hospital LOS was longer than predicted in 38 patients (88.4%). Seven had significant morbidity, including two amputations. Moderate agreement was reached between blinded surgeons (κ = 0.44, P = 0.004). CONCLUSIONS: Graft loss is a major source of morbidity in burn patients. In this cohort, reoperation was common and hospital LOS was extended. Use of a grading scale improves dialog among providers and enables improved understanding of risk factors.

Platelet Count Trends and Prevalence of Heparin-Induced Thrombocytopenia in a Cohort of Extracorporeal Membrane Oxygenator Patients.

OBJECTIVES: To assess the prevalence of heparin-induced thrombocytopenia and to study platelet count trends potentially suggestive of heparin-induced thrombocytopenia in a population of extracorporeal membrane oxygenator patients. DESIGN: Retrospective cohort study. SETTING: A total of 926-bed teaching hospital. PATIENTS: Extracorporeal membrane oxygenator patients who survived longer than 48 hours from extracorporeal membrane oxygenator initiation between January 1, 2009, and December 31, 2013. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Demographic and clinical data were collected prospectively on all extracorporeal membrane oxygenator patients. Heparin-induced thrombocytopenia testing results and platelet count variables were obtained from the electronic medical record. We used our institutional algorithm to interpret the results of heparin-induced thrombocytopenia testing. Ninety-six extracorporeal membrane oxygenator patients met the inclusion criteria. Eight patients met the algorithm criteria for heparin-induced thrombocytopenia diagnosis and seven of those had documented thromboembolic event while on extracorporeal membrane oxygenator (prevalence of heparin-induced thrombocytopenia and heparin-induced thrombocytopenia related thrombosis, 8.3 and 7.3, respectively). Heparin-induced thrombocytopenia positive patients were younger; all underwent venoarterial extracorporeal membrane oxygenator; spent more hours on extracorporeal membrane oxygenator; had significantly higher heparin-induced thrombocytopenia enzyme-linked immunosorbent assays optical density; had a higher prevalence of thromboembolic events and reached platelet count nadir later. There was no difference in mortality between heparin-induced thrombocytopenia positive and negative patients. Comparison of platelet count trends revealed that there was no statistically significant difference between the predefined study groups. CONCLUSIONS: Prevalence of heparin-induced thrombocytopenia and heparin-induced thrombocytopenia-related thrombosis among extracorporeal membrane oxygenator patients at our institution is relatively high. Using platelet count trends to guide decision to test for heparin-induced thrombocytopenia is not an optimal strategy in extracorporeal membrane oxygenator patients. Without a validated pretest probability clinical score, serosurveillance in a defined high-risk group of extracorporeal membrane oxygenator patients may be needed.

Compression therapy affects collagen type balance in hypertrophic scar.

BACKGROUND: The effects of pressure on hypertrophic scar are poorly understood. Decreased extracellular matrix deposition is hypothesized to contribute to changes observed after pressure therapy. To examine this further, collagen composition was analyzed in a model of pressure therapy in hypertrophic scar. MATERIALS AND METHODS: Hypertrophic scars created on red Duroc swine (n = 8) received pressure treatment (pressure device mounting and delivery at 30 mm Hg), sham treatment (device mounting and no delivery), or no treatment for 2 wk. Scars were assessed weekly and biopsied for histology, hydroxyproline quantification, and gene expression analysis. Transcription levels of collagen precursors COL1A2 and COL3A1 were quantified using reverse transcription-polymerase chain reaction. Masson trichrome was used for general collagen quantification, whereas immunofluorescence was used for collagen types I and III specific quantification. RESULTS: Total collagen quantification using hydroxyproline assay showed a 51.9% decrease after pressure initiation. Masson trichrome staining showed less collagen after 1 (P < 0.03) and 2 wk (P < 0.002) of pressure application compared with sham and untreated scars. Collagen 1A2 and 3A1 transcript decreased by 41.9- and 42.3-fold, respectively, compared with uninjured skin after pressure treatment, whereas a 2.3- and 1.3-fold increase was seen in untreated scars. This decrease was seen in immunofluorescence staining for collagen types I (P < 0.001) and III (P < 0.04) compared with pretreated levels. Pressure-treated scars also had lower levels of collagen I and III after pressure treatment (P < 0.05) compared with sham and untreated scars. CONCLUSIONS: These results demonstrate the modulation of collagen after pressure therapy and further characterize its role in scar formation and therapy.

Organ donation from burn-injured patients--a national perspective.

BACKGROUND: There is a discrepancy between publically available data from the United Network for Organ Sharing (UNOS) database and perception of the incidence of mortally burn-injured patients serving as organ donors. In the last 5 y, a single burn center referred several patients who went on to successfully donate multiple organs. However, UNOS data indicate very few referrals of patients with burn injuries nationwide. This discrepancy in UNOS-reported occurrences versus institutional experience prompted this work. METHODS: UNOS data from 1988-2012 was examined for causes of death related to thermal injury, electrical injury, inhalation injury, or carbon monoxide poisoning. The National Burn Repository was examined for burn center death rates and patient characteristics of those with reported nonsurvivable burn injuries. Finally, a national survey queried the clinical experiences and educated opinions of burn center directors, transplant surgeons, and organ procurement organization (OPO) representatives regarding organ donation in the burn-injured population. RESULTS: Between 42% and 52% of those surveyed responded. Survey data indicate that at least 61 patients with burn-related injuries have served as organ donors in the past 5 y alone, versus 23 identified in 24 y of UNOS data. Survey data also indicate that inhalation injuries were the most common burn-related injuries seen before successful organ procurement. Kidneys were the most commonly donated organs, but all major organs and tissues were represented in the experiences of surgeon and organ procurement organization respondents. Up to 10% surgeon respondents believe that patients with burn injuries should not be referred for possible organ donation. CONCLUSIONS: There are more organs donated by patients with mortal burn injuries than currently available UNOS data would suggest. Survey data suggest that these patients should be able to contribute successfully to the supply of organs needed by those on transplant waiting lists, but remain inconsistently recognized as such a resource. Knowledge about long-term organ and tissue viability from burn-injured patients is lacking, and should be the focus of future research.

Anatomic characteristics of aortic transection: centerline analysis to facilitate graft selection.

BACKGROUND: Traumatic transection of the thoracic aorta is a life-threatening complication that most commonly occurs after high-speed motor vehicle collisions. Although such injuries were previously treated with open surgical reconstruction, they are now more commonly being treated with endovascularly placed stent grafts. Unfortunately, most stent grafts are designed for treating aortic aneurysmal disease instead of traumatic injury. Further refinements in stent graft technology depend on a thorough anatomic understanding of the transection injury process. METHODS: All patients with computed tomography (CT) evidence of blunt aortic injury (BAI) between 2006 and 2012 at a Level 1 trauma center were queried. Their initial CT scans were imported into the Intuition (Terarecon, Inc.) viewing program, and off-line centerline reconstruction was performed. Standard demographic data were collected in addition to anatomic characteristics, including aortic diameters and the relationship of the injury to the arch vessels. RESULTS: Thirty-five patients were identified. Three patients were injured proximal to the left subclavian artery. The average length from the left subclavian artery to the proximal site of injury was 16.2 mm (range 2-31 mm). Most patients had >15 mm of landing zone beyond the left subclavian artery. The range of proximal diameters ranged from 17 to 32 mm, with an average aortic diameter of 23.9 mm. The average length of injured aortic segment was 27 mm. CONCLUSIONS: In this contemporary series from a large trauma center, 91% of patients are anatomically able to be treated with a stent graft that does not require coverage of the left common carotid artery. Most patients have an aortic diameter that falls between 21 and 26 mm in diameter, as well as a short segment of injured artery. Centers interested in emergently treating aortic transections are able to do so while maintaining a limited stock of stent grafts that can be used to treat the majority of the population.

Rete ridges are decreased in dyschromic burn hypertrophic scar: A histological study.

Dyschromic hypertrophic scar (HTS) is a common sequelae of burn injury, however, its mechanism has not been elucidated. This work is a histological study of these scars with a focus on rete ridges. Rete ridges are important for normal skin physiology, and their absence or presence may hold mechanistic significance in post-burn HTS dyschromia. It was posited that hyper-, and hypo-pigmented areas of scars have different numbers of rete ridges. Subjects with dyschromic burn hypertrophic scar were prospectively enrolled (n = 44). Punch biopsies of hyper-, hypo-, and normally pigmented scar and skin were collected. Biopsies were paraffin embedded, sectioned, stained with H&E, and imaged. The number of rete ridges were investigated. Burn hypertrophic scars that healed without autografts were first investigated. The number of rete ridges was higher in normal skin compared to HTS that was either hypo- (p < 0.01) or hyper-pigmented (p < 0.001). This difference was similar despite scar pigmentation phenotype (p = 0.8687). Autografted hyper-pigmented scars had higher rete ridge ratio compared to non-autografted hyper-pigmented HTS (p < 0.0001). Burn hypertrophihc scars have fewer rete ridges than normal skin. This finding may explain the decreased epidermal adherence to underlying dermis associated with hypertrophic scars. Though, contrary to our hypothesis, no direct link between the extent of dyschromia and rete ridge quantity was observed, the differences in normal skin and hypertrophic scar may lead to further understanding of dyschromic scars.

Unintended Consequences of Code Status in the Intensive Care Unit: What Happens After a Do-Not-Resuscitate Order Is Placed? A Retrospective Cohort Study.

Background: Some clinicians suspect that patients with do-not-resuscitate (DNR) orders receive less aggressive care. Extrapolation from code status to goals of care could cause significant harm. This study asked the question: Do DNR orders in the intensive care unit (ICU) lead to a decrease in invasive interventions? Methods: This was a retrospective cohort study of ICU patients from three teaching hospitals. All ICU patients were assessed for inclusion. Exclusion criteria were medical futility and death, comfort care, or ICU discharge <48 hours after DNR initiation. Five hundred thirty-six patients met inclusion criteria. One hundred forty-five were included in the final analysis. Primary outcomes were occurrence of invasive interventions after DNR initiation-surgical operation, central line, ventilation, dialysis, or other procedure. Secondary outcomes were antibiotic administration, blood transfusion, mortality, and discharge location. Results: Patients with DNR orders underwent fewer surgical operations (14.5% vs. 31.1%, p = 0.002), but more central lines (42.1% vs. 23.0%, p = 0.009), ventilator use (49.0% vs. 18.9%, p < 0.001), and dialysis (20.0% vs. 4.1%, p = 0.002), compared with patients without DNR orders. Transfusions and antibiotic use decreased similarly over admission for both groups (transfusions: ß = 1.25; p = 0.59; and antibiotics: ß = 1.44; p = 0.27). Mortality and hospice discharges were higher for DNR patients (p < 0.001.). Conclusions: DNR status did not decrease the number of nonoperative interventions patients received as compared with full code counterparts. Although differences in populations existed, patients with DNR orders were likely to receive a similar number of invasive interventions. This finding suggests that providers do not wholesale limit these options for patients with code status limitations.

Code Critical Airway: A Collaborative Solution to a Catastrophic Problem.

BACKGROUND: In 2006, a multi-disciplinary "Code Critical Airway" (CCA) Team was created at our institution. The objective of this study is to examine the demographics and outcomes of the patients for whom a CCA is activated. METHODS: A retrospective review was conducted of patients for whom a CCA was activated from 2008-2020. Data from 2006-2008 was not available due to timing of the implementation of the hospital's electronic medical record system. The early period of the experience with CCAs (2008-2014) was compared to the later period (2015-2020) CCA activations. RESULTS: There were 953 CCA activations. Over time, there was a statistically significantly increase in the number of CCA activations. CCAs occurred in the emergency department in 274 (29.0%), intensive care unit in 255 (27.0%), step-down unit in 60 (6.4%), wards in 294 (31.1%), and elsewhere in 61 (6.5%) cases. CCAs were managed with direct laryngoscopy in 97 patients (10.2%), video laryngoscope in 160 patients (16.8%), fiberoptic bronchoscopy in 179 patients (18.8%), bougie in 7 patient (0.7%), replacement of a prior tracheostomy in 262 patients (27.5%), and creation of a new surgical airway in 95 patients (10.0%). The definitive management of the CCA was not recorded in 76 patients (8.0%). Seven patients required removal of a foreign body (0.7%). There was no intervention in 70 patients (7.3%). There was an increase in successful first attempts at obtaining an airway comparing our experience in the early period (2008-2014) compared to the later period (2015-2020) (P < 0 .001). There was also a decrease in number of CCAs requiring a surgical airway (P = .030). CONCLUSION: Inculcation of aggressive early escalation of airway emergencies through implementation of a CCA Team has resulted in significant improvement in first attempt airway stabilization and a decrease in surgical airways.

American Burn Association Clinical Practice Guidelines on Burn Shock Resuscitation.

This Clinical Practice Guideline (CPG) addresses the topic of acute fluid resuscitation during the first 48 hours following a burn injury for adults with burns ≥20% of the total body surface area (%TBSA). The listed authors formed an investigation panel and developed clinically relevant PICO (Population, Intervention, Comparator, Outcome) questions. A systematic literature search returned 5978 titles related to this topic and after 3 levels of screening, 24 studies met criteria to address the PICO questions and were critically reviewed. We recommend that clinicians consider the use of human albumin solution, especially in patients with larger burns, to lower resuscitation volumes and improve urine output. We recommend initiating resuscitation based on providing 2 mL/kg/% TBSA burn in order to reduce resuscitation fluid volumes. We recommend selective monitoring of intra-abdominal and intraocular pressure during burn shock resuscitation. We make a weak recommendation for clinicians to consider the use of computer decision support software to guide fluid titration and lower resuscitation fluid volumes. We do not recommend the use of transpulmonary thermodilution-derived variables to guide burn shock resuscitation. We are unable to make any recommendations on the use of high-dose vitamin C (ascorbic acid), fresh frozen plasma (FFP), early continuous renal replacement therapy, or vasopressors as adjuncts during acute burn shock resuscitation. Mortality is an important outcome in burn shock resuscitation, but it was not formally included as a PICO outcome because the available scientific literature is missing studies of sufficient population size and quality to allow us to confidently make recommendations related to the outcome of survival at this time.

Surviving Sepsis After Burn Campaign.

INTRODUCTION: The Surviving Sepsis Campaign was developed to improve outcomes for all patients with sepsis. Despite sepsis being the primary cause of death after thermal injury, burns have always been excluded from the Surviving Sepsis efforts. To improve sepsis outcomes in burn patients, an international group of burn experts developed the Surviving Sepsis After Burn Campaign (SSABC) as a testable guideline to improve burn sepsis outcomes. METHODS: The International Society for Burn Injuries (ISBI) reached out to regional or national burn organizations to recommend members to participate in the program. Two members of the ISBI developed specific "patient/population, intervention, comparison and outcome" (PICO) questions that paralleled the 2021 Surviving Sepsis Campaign [1]. SSABC participants were asked to search the current literature and rate its quality for each topic. At the Congress of the ISBI, in Guadalajara, Mexico, August 28, 2022, a majority of the participants met to create "statements" based on the literature. The "summary statements" were then sent to all members for comment with the hope of developing an 80% consensus. After four reviews, a consensus statement for each topic was created or "no consensus" was reported. RESULTS: The committee developed sixty statements within fourteen topics that provide guidance for the early treatment of sepsis in burn patients. These statements should be used to improve the care of sepsis in burn patients. The statements should not be considered as "static" comments but should rather be used as guidelines for future testing of the best treatments for sepsis in burn patients. They should be updated on a regular basis. CONCLUSION: Members of the burn community from the around the world have developed the Surviving Sepsis After Burn Campaign guidelines with the goal of improving the outcome of sepsis in burn patients.

Disparities affecting incarcerated burn-injured patients: Insight from the National Burn Repository.

OBJECTIVE: Incarcerated patients are a vulnerable population and little is known regarding the epidemiology of burn injury and subsequent outcomes. This study utilizes a national database to assess disparities in care affecting this understudied population. METHODS: The National Burn Repository was queried for adult patients discharged into custody. Patients discharged to jail were compared to those with other dispositions. Additional analysis of the incarcerated patients compared those injured while in custody to those injured prior to incarceration. RESULTS: Between 2002-2011, 809 patients were discharged to jail with 283 (35.0%) sustaining these injuries while in custody. Patients were predominantly male (86.2%) and White (52.3%), with median age 35.7 years (IQR 27.7-45.9). Incarcerated patients had significantly higher rates of drug abuse and psychiatric illness. They had significantly smaller burns (2.0% vs. 3.8%, p < 0.001) and were less likely to undergo an operation but had comparable lengths of stay in the hospital. CONCLUSIONS: Although incarcerated burn-injured patients sustain smaller injuries and receive fewer operations they remain hospitalized for similar durations as non-incarcerated patients. Enhanced understanding of burn etiologies and injury characteristics as well as improved insight into the impact of psychosocial factors such as substance abuse and prevalence of psychiatric disorders may help improve care.

A Single-Institution Experience With Standardized Objective and Subjective Scar Evaluation While Undergoing Fractional Ablative Carbon Dioxide Laser Treatment.

Laser treatment of burn scar has increased in recent years. Standard components of scar evaluation during laser scar revision have yet to be established. Patients who began laser scar revision from January 2018 to 2020, underwent at least three treatments, and completed evaluations for each treatment were included. Patients underwent fractional ablative carbon dioxide laser scar revision and pre- and postprocedure scar evaluations by a burn rehabilitation therapist, including Patient and Observer Scar Assessment Scale, Vancouver Scar Scale, our institutional scar comparison scale, durometry, and active range of motion measurements. Twenty-nine patients began laser scar revision and underwent at least three treatments with evaluations before and after each intervention. All patients improved in at least one scar assessment metric after a single laser treatment. After the second and third treatments, all patients improved in at least three scar assessment metrics. Range of motion was the most frequently improved. Durometry significantly improved after the third treatment. Patients and observers showed some agreement in their assessment of scar, but observers rated overall scar scores better than patients. Patients acknowledged substantial scar improvement on our institutional scar comparison scale. Burn scar improves with fractional ablative laser therapy in a range of scar ages and skin types, as early as the first session. Improvements continue as additional sessions are performed. This work suggests baseline evaluation components for patients undergoing laser and a timeline for expected clinical improvements which may inform conversations between patients and providers when considering laser for the symptomatic hypertrophic scar.

Perceptions of care following initiation of do-not-resuscitate orders.

PURPOSE: Documenting do-not-resuscitate (DNR) status in the surgical intensive care unit (ICU) can be controversial; some providers believe that DNR orders change care. This survey evaluates current perceptions. MATERIALS AND METHODS: IRB approved survey consisting of 31 validated questions divided into 3 factors (1. palliation, 2. active treatment, and 3. trust/communication). Individual questions were compared using Fisher's exact-tests and factors were compared via t-tests. RESULTS: Both surgical and ICU staff believe care decreases after DNR order initiation (43%). More surgical staff report decreased care aggressiveness versus ICU staff (63% vs 25%, p < 0.005 and Factor 2, 25.8 versus 29.8, p < 0.001), and felt that electrical cardioversion outside of the setting of ACLS would not be performed (57% vs 24%, p < 0.005). CONCLUSIONS: Surgical staff expressed more concern about care after DNR status than their ICU counterparts. Determining whether care actually changes clinically warrants further investigation.

Compounded Cerium Nitrate-Silver Sulfadiazine Cream is Safe and Effective for the Treatment of Burn Wounds: A Burn Center's 4-Year Experience.

Wound infections and sepsis are significant causes of morbidity after burn injury and can be alleviated by early excision and grafting. In situations that preclude early surgery, topical agents allow for a safer delay. Cerium nitrate compounded with silver sulfadiazine (Ce-SSD) is a burn cream that provides broad antibacterial activity, forms a temporary barrier, and promotes re-epithelialization. Methemoglobinemia is a rare, but oft-cited, systemic complication of Ce-SSD. In this retrospective review, 157 patients treated with Ce-SSD between July 2014 and July 2018 were identified, and the monitoring protocol for methemoglobinemia during Ce-SSD treatment was evaluated. The median age was 59 years (interquartile range [IQR], 47-70.5 years), with TBSA of 8.5% (IQR, 3-27), adjusted Baux score of 76 (IQR, 59-94), and inhalation injury present in 9.9% of patients. Primary endpoints included incidence of symptomatic and asymptomatic methemoglobinemia. Of the 9.6% (n = 15) of patients with methemoglobinemia, 73.3% (n = 11) had maximum methemoglobin levels ≥72 hours from the time of the first application. One patient developed clinically significant methemoglobinemia. Patients with TBSA ≥20% were more likely to develop methemoglobinemia (odds ratio 9.318, 95% confidence interval 2.078-65.73, P = .0078); however, neither Ce-SSD doses nor days of exposure were significant predictors. Ce-SSD application to temporize burn wounds until excision and grafting is safe, effective, and, in asymptomatic patients with TBSA <20%, can be used without serial blood gas monitoring. Vigilant monitoring for symptoms should be performed in patients with TBSA ≥20%, but routine blood gases are not necessary.

Prevalence and risk factors for acute stress disorder and posttraumatic stress disorder after burn injury.

BACKGROUND: Psychological consequences of burn injury can be profound. Acute stress disorder (ASD) and posttraumatic stress disorder (PTSD) are known sequelae, but routine identification is challenging. This study aims to identify patient characteristics associated with outpatient positive screens. METHODS: The Primary Care Posttraumatic Stress Disorder questionnaire (PC-PTSD-4) was administered at initial outpatient Burn Center visits between 5/2018-12/2018. Demographics, injury mechanism, and total body surface area (TBSA) were recorded. Those with ≥3 affirmative answers were considered positive. Patients with positive and negative screens were compared. RESULTS: Of 307 surveys collected, 292 (median TBSA 1.5 %, IQR 0.5-4.0 %) remained for analysis after exclusions. Of those, 24.0 % screened positive. Positive screens were associated with presence of a deep component of the injury, injury mechanism, upper extremity involvement, ICU admission, and prolonged hospital length of stay. CONCLUSIONS: Numerous factors distinguish burn injury from other traumatic mechanisms and contribute to disproportionate rates of traumatic stress disorders. Optimization of burn-oriented ASD and PTSD screening protocols can enable earlier intervention.

Inhalation Injury Is Associated With Endotheliopathy and Abnormal Fibrinolytic Phenotypes in Burn Patients: A Cohort Study.

Burn injury is associated with endothelial dysfunction and coagulopathy and concomitant inhalation injury (IHI) increases morbidity and mortality. The aim of this work is to identify associations between IHI, coagulation homeostasis, vascular endothelium, and clinical outcomes in burn patients. One hundred and twelve patients presenting to a regional burn center were included in this retrospective cohort study. Whole blood was collected at set intervals from admission through 24 hours and underwent viscoelastic assay with rapid thromboelastography (rTEG). Syndecan-1 (SDC-1) on admission was quantified by ELISA. Patients were grouped by the presence (n = 28) or absence (n = 84) of concomitant IHI and rTEG parameters, fibrinolytic phenotypes, SDC-1, and clinical outcomes were compared. Of the 112 thermally injured patients, 28 (25%) had IHI. Most patients were male (68.8%) with a median age of 40 (interquartile range, 29-57) years. Patients with IHI had higher overall mortality (42.68% vs 8.3%; P < .0001). rTEG LY30 was lower in patients with IHI at hours 4 and 12 (P < .05). There was a pattern of increased abnormal fibrinolytic phenotypes among IHI patients. There was a greater proportion of IHI patients with endotheliopathy (SDC-1 > 34 ng/ml) (64.7% vs 26.4%; P = .008). There was a pattern of increased mortality among patients with IHI and endotheliopathy (0% vs 72.7%; P = .004). Significant differences between patients with and without IHI were found in measures assessing fibrinolytic potential and endotheliopathy. Mortality was associated with abnormal fibrinolysis, endotheliopathy, and IHI. However, the extent to which IHI-associated dysfunction is independent of TBSA burn size remains to be elucidated.

Incidence of methemoglobinemia in patients receiving cerium nitrate and silver sulfadiazine for the treatment of burn wounds: a burn center's experience.

In 1976, the combination of cerium nitrate and silver sulfadiazine was introduced as a topical therapy for burn wounds. Experience with a locally prepared combination agent has shown physical change of the eschar and delayed subeschar bacterial colonization. A potential systemic complication of this treatment is the development of methemoglobinemia (Met-Hba) due to the oxidizing nature of Ce(NO(3))(3). Met-Hba has a spectrum of clinical consequences, ranging from headache and cyanosis to cardiac ischemia, hypotension, and even death. Given the frequent use of this combination agent at our burn center, a retrospective review was conducted to evaluate the incidence of Met-Hba. A query of pharmacy records revealed 170 patients from January 2005 to October 2009 that had received this treatment. Eighteen patients (∼10%) developed Met-Hba as noted on arterial blood gas (methemoglobin>3%) and only three patients (∼2%) had methemoglobin levels >10%. In the majority of cases, there were no clinical symptoms of Met-Hba. Most patients' relative hypoxia resolved with cessation of treatment; however, five patients required treatment with methylene blue. The presence of Met-Hba associated with this topical therapy can be diagnosed early by vigilant monitoring, thereby reducing morbidity and mortality. In our experience, cerium combined with silver sulfadiazine is a valuable and safe treatment for deep partial and full-thickness burn wounds.