scholarly journals Inhalation Injury is Associated with Endotheliopathy and Abnormal Fibrinolytic Phenotypes in Burn Patients: A Cohort Study

Author(s):  
John W Keyloun ◽  
Tuan D Le ◽  
Kathleen E Brummel-Ziedins ◽  
Melissa M Mclawhorn ◽  
Maria C Bravo ◽  
...  

Abstract Burn injury is associated with endothelial dysfunction and coagulopathy and concomitant inhalation injury increases morbidity and mortality. The aim of this work is to identify associations between inhalation injury (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 TEG (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 (IQR, 29-57) years. Patients with IHI had higher overall mortality (42.68% vs. 8.3%; p<0.0001). rTEG LY30 was lower in patients with IHI at hours 4 and 12 (p<0.05). 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=0.008). There was a pattern of increased mortality among patients with inhalation injury and endotheliopathy (0% vs. 72.7%; p=0.004). 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 inhalation injury. However, the extent to which IHI associated dysfunction is independent of TBSA burn size remains to be elucidated.

2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S57-S58
Author(s):  
John W Keyloun ◽  
Saira Nisar ◽  
Kathleen Brummel-Ziedins ◽  
Maria Bravo ◽  
Matthew Gissell ◽  
...  

Abstract Introduction Endotheliopathy in burn patients is largely uncharacterized. Syndecan-1 (SDC-1), thrombomodulin (TM), and tissue factor pathway inhibitor (TFPI) are components of the vascular endothelial glycocalyx. Proteolytic cleavage of these moieties may yield biomarkers for endothelial damage. The aim of this study is to evaluate endotheliopathy after burn injury by monitoring plasma levels of these biomarkers over time to investigate potential relationship to mortality. Methods Burn injured patients presenting to a regional burn center from 2012 to 2017 were prospectively enrolled. Blood samples were collected at 0, 2, 4, 8, 12, 24, 36, 48, 60, and 72 hours from admission. Plasma SDC-1, TM, and TFPI levels were quantified by ELISA. Demographic data and injury characteristics were obtained from the medical chart. Patients with concomitant inhalation injury, trauma, or < 10% total body surface area (TBSA) burns were excluded. Statistical analysis was performed using mixed-effect models with Sidak’s correction for multiple comparisons. Significance was set at p =0.05. Data are presented as mean ± standard deviation. Results A cohort of 22 patients was identified with an average age of 45±14 years, TBSA of 30±15%, with 6 patients who died from their injuries. The deceased group was older (59±13 vs. 40±10 years, p = 0.01), and there was no significant difference in burn size. Mean SDC-1 levels were higher in the deceased group at all time points (p=0.0004) and this difference was significant at hour 12 (106±11 vs. 41±31 ng/mL, p = 0.0002), hour 24 (160±39 vs. 35±20 ng/mL, p = 0.04) and hour 72 (100±3 vs. 35±38 ng/mL, p = 0.01). Mean soluble TM levels were higher in the deceased group after hour 12 (p = 0.04) and there was a trend towards higher TFPI levels after hour 12 in the deceased group. Conclusions Biomarkers are elevated in patients following burn injury who die, when inhalation injury and trauma are excluded. Given equivalent TBSA, older patients appear more sensitive to thermally induced glycocalyx degradation. SDC-1 shows the greatest promise as a prognostic indicator as levels tend to be higher among deceased patients on admission and are significantly higher as early as hour 12. Applicability of Research to Practice Reliable assessment of the patient’s endothelial damage may hold predictive value for clinicians and could assist in clinical decision making. Further research must investigate endotheliopathy in burn patients.


2019 ◽  
Author(s):  
Edward A. Bittner ◽  
Connie W. Chaudhary

Anesthetic management of burn-injured patients can be particularly challenging. Burn-injured patients exhibit pathophysiologic changes that can affect nearly all the organs in the body. Challenges the anesthesiologist may encounter when caring for burn patients include difficult airway management, impaired lung function, vascular access issues, hypothermia, pharmacokinetic and pharmacodynamic alterations, and pain management. Other important considerations that could affect the condition of burn patients include blood loss, hypermetabolism, pain control, and temperature management.  Anticipating appropriate precautions can change the clinical outcome of these patients.  Optimal care requires a full understanding of the unique preoperative, intraoperative, and postoperative issues of the burn-injured patient. This review contains 2 figures, 3 tables, and 77 references. Key Words: anesthetic management of acute burns, burn injury, electrical injury, fluid resuscitation, inhalation injury, Parkland formula, pain management


2019 ◽  
Vol 40 (3) ◽  
pp. 269-273 ◽  
Author(s):  
Megan A Rech ◽  
Michael J Mosier ◽  
Kevin McConkey ◽  
Susan Zelisko ◽  
Giora Netzer ◽  
...  

Abstract This study examines health outcomes in burn patients with sepsis. We hypothesized that burn patients with sepsis would have an increased odds risk for in-hospital death and longer intensive care unit (ICU) stays. This was a retrospective cohort of consecutive patients admitted to the burn ICU with total BSA (TBSA) ≥10% and/or inhalation injury between January 2008 and March 2015. Overall 407 burn patients were included; the case-rate for sepsis was 39.1% (n = 159); 20.1% (n = 82) patients were septic and 18.9% (n = 77) patients experienced septic shock. Patients with septic shock had the highest mortality rate (13.31% no sepsis vs 3.7% sepsis vs 49.4% septic shock, P < .01). Median 28-day ICU-free days was higher in patients without sepsis (23 days [Interquartile range (IQR) 14–27] no sepsis vs 0 days [IQR 0–10] sepsis vs 0 days [IQR 0–0] septic shock, P < .01). Sepsis (with or without shock) increased odds of in-hospital death (odds ratio 7.04, 95% confidence interval 1.93–25.7) in reference to the no sepsis group. With each incremental Sequential Organ Failure Assessment (SOFA) score or 10% TBSA increase, the odds risk for in-hospital death increased by 56 and 75%, respectively. Our study characterized outcomes in patients with sepsis after severe burn injury. The odds risk for in-hospital death was greater in patients with sepsis, increasing burn severity according to TBSA and SOFA score.


2021 ◽  
Vol 42 (Supplement_1) ◽  
pp. S13-S14
Author(s):  
Sarah Zavala ◽  
Kate Pape ◽  
Todd A Walroth ◽  
Melissa A Reger ◽  
Katelyn Garner ◽  
...  

Abstract Introduction In burn patients, vitamin D deficiency has been associated with increased incidence of sepsis. The objective of this study was to assess the impact of vitamin D deficiency in adult burn patients on hospital length of stay (LOS). Methods This was a multi-center retrospective study of adult patients at 7 burn centers admitted between January 1, 2016 and July 25, 2019 who had a 25-hydroxyvitamin D (25OHD) concentration drawn within the first 7 days of injury. Patients were excluded if admitted for a non-burn injury, total body surface area (TBSA) burn less than 5%, pregnant, incarcerated, or made comfort care or expired within 48 hours of admission. The primary endpoint was to compare hospital LOS between burn patients with vitamin D deficiency (defined as 25OHD < 20 ng/mL) and sufficiency (25OHD ≥ 20 ng/mL). Secondary endpoints include in-hospital mortality, ventilator-free days of the first 28, renal replacement therapy (RRT), length of ICU stay, and days requiring vasopressors. Additional data collected included demographics, Charlson Comorbidity Index, injury characteristics, form of vitamin D received (ergocalciferol or cholecalciferol) and dosing during admission, timing of vitamin D initiation, and form of nutrition provided. Dichotomous variables were compared via Chi-square test. Continuous data were compared via student t-test or Mann-Whitney U test. Univariable linear regression was utilized to identify variables associated with LOS (p < 0.05) to analyze further. Cox Proportional Hazard Model was utilized to analyze association with LOS, while censoring for death, and controlling for TBSA, age, presence of inhalation injury, and potential for a center effect. Results Of 1,147 patients screened, 412 were included. Fifty-seven percent were vitamin D deficient. Patients with vitamin D deficiency had longer LOS (18.0 vs 12.0 days, p < 0.001), acute kidney injury (AKI) requiring RRT (7.3 vs 1.7%, p = 0.009), more days requiring vasopressors (mean 1.24 vs 0.58 days, p = 0.008), and fewer ventilator free days of the first 28 days (mean 22.9 vs 25.1, p < 0.001). Univariable analysis identified burn center, AKI, TBSA, inhalation injury, admission concentration, days until concentration drawn, days until initiating supplementation, and dose as significantly associated with LOS. After controlling for center, TBSA, age, and inhalation injury, the best fit model included only deficiency and days until vitamin D initiation. Conclusions Patients with thermal injuries and vitamin D deficiency on admission have increased length of stay and worsened clinical outcomes as compared to patients with sufficient vitamin D concentrations.


Author(s):  
Salsabilla Gina Rania ◽  
Lynda Hariani ◽  
Helmia Hasan ◽  
Iswinarno Doso Saputro

Introduction: Inhalation injury is one of burns impact. Airway burns due to inhalation injury is a non-specific term which refer to all respiratory tract injuries occurred due to irritative chemicals, including heat and smoke during inspiration. Inhalation injury increases the risk of death in burns. Pneumonia is one of burns-related inhalation injury complications.Methods: This was a descriptive retrospective study aiming to determine the incidence of pneumonia in burn patients with inhalation injury using secondary data at Burn Center Dr. Soetomo General Hospital Surabaya in the period of January 2015 - December 2018.Results: There were 5 cases of pneumonia in 14 burn cases with inhalation injury (35.71%). Respectively, 2 and 3 cases were found in 2017 and 2018. There were 2 female (40%) and 3 male (60%) patients, with age varied within 28-73 years old. The burn area of burn patients with inhalation injury and pneumonia were found by 15%, 20%, 24%, 32% and 71%, or within the classification of 11-20% burn area, and most complication found was hypoalbuminemia, as much as 3 cases (60%).\Conclusion: Most pneumonia in burn cases with inhalation injury was occurred in 2018, dominated by male patients. The age of the patient were ranging from early adulthood to elderly. Most burns were in the range of 11-20% burn area with the most complication found was hypoalbuminemia.


2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S252-S252
Author(s):  
Mathangi A Chandramouli ◽  
Angela Rabbitts ◽  
Jamie Heffernan ◽  
Philip Chang

Abstract Introduction Burn prevention is one of the core missions of burn centers. Geomapping has been instrumental for police departments to target resources for crime prevention. Similarly, geomapping could assist burn specialists in identifying “hotspots” of injury. The purpose of this study is to visually identify the incidence and location of adult burn injury within the catchment area of a single tertiary urban regional burn center. Data mapping can thus then be used to target burn outreach and prevention efforts. Methods Demographic and deidentified clinical data was collected from a single institution over a 3 year period. 1986 burn patients were admitted between 1/2016 and 12/2018. 1360 patients were 16 years of age or greater. Geriatric patients were defined as age 60 or greater to facilitate comparison with National Burn Repository data which breaks down age by decades. The patients were mapped by their home zip code. Results 1360 burn patients 16 years or older were admitted to this single tertiary burn center between 1/2016 and 12/2018 with an age range from 16–101. 393 patients were 60 years or older (28.9% of the adult population compared to 19.8% of the NBR population) 6 zip codes within the catchment area were identified as “hotspots” as having more than 30 inpatients listing that zip code as their home address (see figure). The results show an unequal distribution of patients over the burn center’s catchment area with hotspots (defined by > 30 burn admissions during the study period) in 6 zip codes. Conclusions The local demographics of this inpatient adult burn population follow national trends in etiology but differ with regards to age and race. The geomapping tool visualizes burn incidence by geography. Based on this analysis, outreach and prevention efforts should target elderly populations especially in the “hotspots.” Applicability of Research to Practice This research will inform targeted efforts towards burn prevention and education outreach.


2020 ◽  
Vol 41 (6) ◽  
pp. 1290-1296
Author(s):  
Minesh Chotalia ◽  
Christine Pirrone ◽  
Thomas Mangham ◽  
Barbara Torlinska ◽  
Randeep Mullhi ◽  
...  

Abstract This study compares the ability of liberal vs restrictive intubation criteria to detect prolonged intubation and inhalation injury in burn patients with suspected inhalation injury. Emerging evidence suggests that using liberal criteria may lead to unnecessary intubation in some patients. A single-center retrospective cohort study was conducted in adult patients with suspected inhalation injury admitted to intensive care at Queen Elizabeth Hospital, Birmingham between April 2016 and July 2019. Liberal intubation criteria, as reflected in local guidelines, were compared to restrictive intubation criteria, as outlined in the American Burn Association guidelines. The number of patients displaying positive characteristics from either guideline was compared to the number of patients who had prolonged intubation (more than 48 hours) and inhalation injury. In detecting a need for prolonged intubation (n = 85), the liberal criteria had greater sensitivity (liberal = 0.98 [0.94–1.00] vs restrictive = 0.84 [0.75–0.93]; P = .013). However, the restrictive criteria had greater specificity (restrictive = 0.96 [0.89–1.00] vs liberal = 0.48 [0.29–0.67]; P < .001). In detecting inhalation injury (n = 72), the restrictive criteria were equally sensitive (restrictive = 0.94 [0.87–1.00] vs liberal = 0.98 [0.84–1.00]; P = .48) and had greater specificity (restrictive = 0.86 [0.72–1.00] vs liberal = 0.04 [0.00–0.13]; P < .001). In patients who met liberal but not restrictive criteria, 65% were extubated within 48 hours and 90% did not have inhalation injury. Liberal intubation criteria were more sensitive at detecting a need for prolonged intubation, while restrictive criteria were more specific. Most patients intubated based on liberal criteria alone were extubated within 48 hours. Restrictive criteria were highly sensitive and specific at detecting inhalation injury.


Author(s):  
Travis L Perry ◽  
William Pinette ◽  
Jason Miner ◽  
Heather Lesch ◽  
Brittany Denny ◽  
...  

Abstract Acute respiratory distress syndrome (ARDS) remains a formidable sequela, complication, and mortality risk in patients with large burns with or without inhalation injury. Alveolar recruitment using higher Positive end expiratory pressures (PEEP) after the onset of ARDS has been tried with varying success. Studies have identified benefits for several rescue maneuvers in ARDS patients with refractory hypoxemia. A prophylactic strategy utilizing an early recruitment maneuver, however, has not, to our knowledge, been explored in ventilated burn patients. This study was designed to evaluate the natural progression and clinical outcomes of ARDS severity (mild, moderate, and severe) using Berlin criteria in ventilated burn patients treated with an early high-PEEP ventilator strategy. A single-center retrospective review of burn patients who were mechanically ventilated for greater than 48 hours utilizing an early high-PEEP >10 mmHg (10.36) ventilator strategy was performed at the Level 1 trauma and regional burn center in Wright State University. ARDS severity was defined according to the Berlin criteria and then compared to published results of ARDS severity, clinical outcomes, and mortality. Demographic data, as well as respiratory and clinical outcomes, were evaluated. Eighty-three patients met inclusion criteria and were evaluated. Utilizing the Berlin definition as a benchmark, 42.1% of patients met ARDS criteria on admission, and most patients (85.5%) developed ARDS within the first seven days: 28 (34%) mild, 32 (38.6%) moderate, and 11 (13.3%) severe ARDS. The mean percent total body surface area was 24.6 + 22.1, with 68.7% of patients diagnosed with inhalation injury. The highest incidence of ARDS was 57.8% on day 2 of admission. Most cases remained in the mild to moderate ARDS category with severe ARDS (2.4%) being less common by hospital day 7. Overall, 30-day in-hospital and inhalation injury mortality rates were 9.6% and 15.8%, respectively. No correlation was observed between plateau pressures (22.8), mean arterial pressures (84.4), or vasopressor requirements; and oxygen requirements down trended quickly over the first 24 to 48 hours. In our study, implementing prophylactic, immediate high-PEEP in mechanically ventilated burn patients was associated with trends toward decreased severity and rapid resolution of ARDS in the first week following burn injury. This correlated with low 30-day in-hospital mortality in this population. This short and less severe course suggests that early high-PEEP support may be a viable protective strategy in the treatment of ventilated burn patients with ARDS.


2020 ◽  
Vol 41 (Supplement_1) ◽  
pp. S81-S82
Author(s):  
Kevin M Klifto ◽  
C Scott Hultman

Abstract Introduction Chronic pain, unrelated to the burn itself, can manifest as a long-term complication in patients sustaining burn injuries. The purpose of this study was to determine the prevalence and compare burn characteristics between burn patients who developed chronic neuropathic pain (CNP) and burn patients without CNP treated at a Burn Center. Methods A single-center, retrospective analysis of 1880 patients admitted to the adult Burn Center was performed from January 1, 2014 through January 1, 2019. Patients included were over the age of fifteen years, sustained a burn injury and were admitted to the Burn Unit. CNP was diagnosed clinically following burn injury. Patients were excluded from the definition of CNP if their pain was due to an underlying medical illness or medication. Comparisons between patients admitted to the Burn Unit with no pain and patients admitted to the Burn Unit who developed CNP were performed. Results One hundred thirteen (n=113) of the 1880 burn patients developed CNP as a direct result of burn injury over five years with a prevalence of 6%. Patients who developed CNP were a significantly older median age [54 vs. 46, p=0.002], abused alcohol [29% vs. 8.5%, p< 0.001], abused substances [31% vs. 9%, p< 0.001], were current everyday smokers [73% vs. 34%, p< 0.001], suffered more full-thickness burns [58% vs. 43%, p< 0.001], greater median %TBSA burns [6 vs. 3.5, p< 0.001], were more often intubated on mechanical ventilation [33% vs. 14%, p< 0.001], greater median number of surgeries [2 vs. 0, p< 0.001] and longer median hospital length of stay (LOS) [10 vs. 3 days, p< 0.001], compared to those who did not develop CNP, respectively. Median patient follow-up was 27 months. Conclusions The prevalence of CNP over five years was 6% in the Burn Center. Older ages, alcohol abuse, substance abuse, current everyday smoking, greater %TBSA burns, third degree burns, being intubated on mechanical ventilation, having more surgeries and longer hospital LOS were associated with developing CNP following burn injury. Applicability of Research to Practice The largest study to date assessing the prevalence of chronic nerve pain following burns. Identified new independent predictors for chronic neuropathic pain following burn injury, not previously assessed in the literature.


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