Early fasciotomy in electrically injured patients as a marker for injury severity and deep venous thrombosis risk: an analysis of the National Burn Repository

Extracorporeal Life Support Use in Mixed Distributive-Obstructive Shock Following an Electrical Injury: A Case Report

Electrical burn injuries can be catastrophic, threatening severe disability or mortality. We present a patient who suffered from electrical shock, requiring bilateral above-knee amputations, right trans-radial amputation, renal replacement therapy, and veno-arterial extracorporeal life support (VA ECLS) therapy. While there exist reports of cases that have demonstrated the potential use of ECLS in burn patients with cardiogenic shock or acute respiratory distress syndrome, this is a unique case of VA ECLS use for an electrical injury patient who developed mixed distributive-obstructive shock secondary to pulmonary embolism and sepsis. Given the wide variety of morbidities that can result from electrical burns, VA ECLS is a promising tool for those who require cardiopulmonary support refractory to traditional measures.

Could fasciotomy prevent amputation in patients with electrical burn injuries? Insights from a cross-sectional study in Indonesia

The amputation rate resulting from electrical burn injuries remains high, yet no study has investigated whether early fasciotomy may reduce the amputation rate. The aim of this study was to analyze the success rate of fasciotomy in preventing amputation and determine the optimal timing for fasciotomy in electrical burn injuries. This study was conducted at Dr. Soetomo Hospital from January 2020 to July 2023. Total sampling was employed to recruit the patients. Clinical data, voltage characteristics, burn location, affected total body surface area, burn depth, hospital arrival time, and time interval from incident to fasciotomy were assessed. Chi-squared test was used to assess factors associated with the fasciotomy incidence and factors associated with amputation after fasciotomy. A total of 45 patients were included, of which 97.8% were male, with a mean age of 37.60 years old. Approximately 73% of patients had full-thickness burn injuries, with the left upper extremity being the most affected (80%). There are seven patients (15.6%) had fasciotomy and five (11.1%) patients had an amputation. Our data indicated a significant association between voltage characteristics and fasciotomy incidence (p=0.034). Additionally, our data indicated that earlier arrival to the hospital (p=0.002) and timely fasciotomy conducted upon arrival (p<0.001) were associated with a reduced rate of amputation. This study highlights that prompt arrival to the hospital and early fasciotomy may prevent amputation in patients with electrical burn injuries.

Understanding the Drivers of Cost and Length of Stay in a Cohort of 21,875 Patients with Severe Burn

Burn management has significantly advanced in the past 75 years, resulting in improved mortality rates. However, there are still over one million burn victims in the United States each year, with over 3,000 burn-related deaths annually. The impacts of individual patient, hospital, and regional demographics on length of stay (LOS) and total cost have yet to be fully explored in a large nationally representative cohort. Thus, this study aimed to examine various hospital and patient characteristics using a sample of over 20,000 patients. Inpatient data from the National Inpatient Sample from 2008 to 2015 were analyzed, and only patients with an ICD-9 code for second- or third-degree burns were included. In addition, a major operating room procedure must have been indicated on the discharge summary for patients to be included in the final dataset, ensuring that only severe burns requiring complex care were analyzed. Analysis of covariance models was used to evaluate the impact of various patient, hospital, and regional variables on both LOS and cost. The study found that skin grafts and fasciotomy significantly increased the cost of hospitalization. Having burns on the face, neck, and trunk significantly increased costs for patients with second-degree burns, while burns on the trunk resulted in the longest LOS for patients with third-degree burns. Infections in the hospital and additional procedures, such as flaps and skin grafts, also led to longer stays. The study also found that the prevalence of postoperative complications, such as electrolyte imbalance, was high among patients with burn surgery.

Do pre-burn center management algorithms work? Evaluation of pre-admission diagnosis and treatment adequacy of burn patients referred to a burn center

Interventions for burn management until the patient is transferred to a burn center affect mortality and morbidity. Therefore, adherence to the developed algorithms is an important issue. This study aimed to determine deficiencies in different aspects of the implementation of these algorithms during the pre-admission diagnosis and treatment processes of patients referred to our burn center. This study involved a 4-year review of patients referred to our burn center. One hundred and seventy burn cases admitted by referral were enrolled in the study. Adequacy of resuscitation within the first 24 hours, adherence to guidelines, and mortality were investigated. Resuscitation performed within the first 24 hours was found to be inadequate in 88 patients (51.8%). When the burned surface area percentages were evaluated all percentages were calculated higher before arrival. There were 78 major burn cases (45.9%), and the frequency of inhalation burns, intubation requirements and renal failure were more common in this group compared to the minor burn group (P < .001). The frequency of intubation without accurate indications was found to be 70.58%. Inadequate escharotomy was detected at a rate of 52.9%, and inadequate fasciotomy at a rate of 66.6%. The mortality rate was 22.4% among all patients. Interventions undertaken during the period until the patients' referral to these centers affect mortality and morbidity. In this study, it was found that the pre-hospital applications generated were insufficient, and it was proposed that burn patient care algorithms be developed with in-service training throughout the country.

Electrical Burn and Associated Factors That Prolong In-patient Stay in a Level Three Burn Unit

Electrical trauma is associated with significant morbidity and mortality, which have been reduced by improved medical care, as measured by the length of stay (LOS) as a marker for this population's quality of care. This paper will review the clinical and demographic characteristics, LOS in the hospital, and variables related to patients with electrical burns. A retrospective cohort study was conducted at a specialized burn unit in Southwest Colombia. Five hundred seventy-five electrical burn-related admissions from 2000 to 2016 were reviewed for the LOS and variables including patient-related (age, gender, marital status, education, and occupation), location of the accident (domestic vs labor-related), voltage, direct contact, arc, flash, flame, clinical presentation (burn surface area, depth, single or multiple organ injury, secondary infection, and abnormal labs), and treatment (surgical procedures and intensive care unit [ICU] admission). Univariate and bivariate analysis, with its 95% CI (confidence interval). We also performed a multiple logistic regression. LOS was correlated to males, age greater than 20 years, construction workers, high voltage injuries, severe burns by area and depth, infection, ICU admission, and multiple surgical procedures or extremity amputation. LOS due to electrical injury was observed to be significantly associated with the following variables, carpal tunnel release (OR [odds ratio]= 4.25, 95% CI [confidence interval] 1.70-5.20); amputation (OR = 2.81, 95% CI 1.60-5.10); infection (OR = 2.60, 95% CI 1.30-5.20); site of infection, mainly wound (OR = 1.30, 95% CI 1.10-1.44); associated injury (OR = 1.72, 95% CI 1.00-3.24); work or domestic accident (OR = 1.83, 95% CI 1.00-3.32); aged 20-40 years (OR = 1.41, 95% CI 1.00-2.10); CPK (OR = 1.40, 95% CI 1.00-2.00); and third-degree burns (OR = 1.55, 95% CI 1.00-2.80). Risk factors for LOS secondary to electrical injury should be appropriately addressed. Prevention at high-risk workplaces is imperative. Mitigating the injury with appropriate management of infection and timely surgical interventions play an essential role in the successful treatment of these patients.

[Mechanism and prevention and treatment strategy of progressive injury in high-voltage electric burns]

High-voltage electric burn is one of burns that can cause severe damages to tissue and organs. Clinically, progressive injury in high-voltage electric burns is a key pathological change that affects the level of amputation and the success rate of treatment. At present, the exact definition and mechanism of progressive injury in high-voltage electric burns have not been elucidated, and the clinical treatment is mainly symptomatic treatment. Relevant research data on the mechanism and treatment of progressive injury in high-voltage electric burns are lacking. This paper analyzes and summarizes the mechanism, diagnosis, treatment, and common outcome of progressive injury in high-voltage electric burns, and provides a reference for the mechanism research, clinical diagnosis and treatment of progressive injury in high-voltage electric burns.

[Research advances on venous thromboembolism in burn patients]

Venous thromboembolism (VTE) has become a serious medical problem faced by medical personnel all over the world, due to its high incidence, high fatality, and easily missed and misdiagnosed. Patients with severe burns are at high risk for VTE due to the presence of blood hypercoagulability, central venous catheterization, repeatedly received surgical procedures, and prolonged bed rest. Identifying the risk factors of VTE in burn patients and taking targeted preventive measures are the key to reduce the incidence of VTE. However, there are no risk assessment tools or prevention guidelines for VTE in burn patients at home and abroad, and scholars from various countries are actively exploring the occurrence, influencing factors, and prevention of VTE in burn patients. This paper reviews the research progress of the occurrence situation, related risk factors, risk assessment, and prevention of VTE in burn patients in recent years, and discusses the existing problems and future research directions in this field.

The Evaluation of a Golden Period of Fasciotomy for High Voltage Electrical Burn Injury Patients With Compartment Syndrome

Electrical burn injuries can cause various acute manifestations that require surgeons to make an early decision, such as fasciotomy for compartment syndromes. Early decompression can become a 'golden period'for limb salvation. This study evaluates the duration of burn to fasciotomy (B-F time) and amputation. A cross-sectional study was performed on medical records. Inclusion criteria were patients with high voltage electrical injuries and compartment syndrome. Exclusion criteria were patients whose extremities were already non-vital on admission and those lost to follow up. Demographic information, burn surface area and B-F time for patients amputated above the elbow (group A amputation), below the elbow (group B amputation), and no amputation (non-amputated) were investigated. More than 50% patients underwent amputation and 60% had less than 18 hours B-F time. Mean B-F time for non-amputated patients was 18 hours and for amputated patients 20.38 hours. Mean burn to amputation (B-A) time and fasciotomy to amputation (F-A) time in group B was about double compared to group A. The B-A time range of group Awas 4.2-7.3 days. Our study showed 18 hours maximum to be the golden period of burn to fasciotomy. The window period of muscle injury evaluation is maximum 7 days to permit limb salvation at the lowest level possible.

Predictors for limb amputation and reconstructive management in electrical injuries

BACKGROUND

Electrical injuries follow a specific pathophysiology and may progressively damage both skin and deeper tissues, frequently ending in amputations. Type and timing of soft tissue reconstruction after electrical burns is crucial for proper outcome. The aim of this study was to assess surgical management and outcome of patients with electrical injuries treated at the Zurich Burn Center over the last 15 years, with emphasis on risk factors for amputation and reconstructive strategy.

METHODS

Patient charts were reviewed retrospectively to identify cases admitted at the Zurich Burns Center (2005-2019). Patient characteristics and surgical management, with a special focus on amputations, reconstruction and outcome were analyzed and risk factors for amputation were assessed.

RESULTS

Eighty-nine patients were identified and a total of 522 operations were performed. Escharotomy and fasciotomies were performed in 40.5% and 24.7% of cases, respectively, mainly at admission. The total amputation rate was 13.5% (23 amputations, 12 patients). Development of compartment syndrome, rhabdomyolysis, high myoglobin and CK blood levels, kidney failure, sepsis and respiratory complications during the course were related to higher risk of amputation (p < 0.001). Sixty-six flap-based reconstructions were performed (25% cases): 49 loco-regional flaps, 3 distant pedicled flaps, 14 free flaps. Two flaps were lost (flap failure rate 14%). Both flap losses occurred in cases of early reconstruction (within 5-21 days).

CONCLUSIONS

Electrical injuries are still cause of elevated morbidity and mortality, with high amputation rate. Predictors for amputation can support physicians in the surgical care and decision-making. Reconstruction remains challenging in this type of injury: the surgical management with early decompression, serial necrectomies and delayed early reconstruction remains the procedure of choice at our unit.

Epidemiology, Geographical Distribution, and Outcome Analysis of Patients with Electrical Burns Referred To Shiraz Burn Center, Shiraz, Iran during 2008-2019

Background:

Burn is one of the most significant injuries in industrial and developing societies and is one of the most important traumas leading to hospitalization. The aim of this study was to identify the epidemiology, geographical distribution, and outcome of electric burns in Fars province and to present the distribution map.

Methods:

In this descriptive-analytical study, the study population involved all electrical burn victims admitted to Amir al-Momenin and Ghotbeddin Hospitals from 2008 to 2019 in Fars province in the south of Iran. Data were analyzed using SPSS software version 22.

Results:

Among a total of 246 patients, the average age was 30.78 ± 11.07. The highest frequency among educational levels was among under-diploma patients (38.6%), and the majority were employed (87.4%). Also, most of the patients were from urban areas (70.3%). The majority of burn incidences occurred at the workplace (57.7%). Also, among the high voltage patients, 25 patients (30.9%) had an amputation, while among low voltage only 12 patients (16.2%) had an amputation. Non-surgical treatment was applied in 68 (28%) cases, while Escharotomy was performed in 28 (11.4%) patients. There was also a statistically significant association between burn voltage and amputation (P= 0.039).

Conclusion:

Based on our report, the rate of electrical burn injuries in Iran is still high, which underlines the need for stronger efforts in effective prevention, such as better public education and the establishment of strict regulations regarding the distribution and use of electricity.

Évolution catastrophique d’une électrisation des deux membres supérieurs: désarticulation bilaté-rale des épaules

The importance of tissue damage secondary to high voltage electrical injury to the limbs often makes the management of this kind of burn very difficult. Repair interventions are sometimes ineffective and amputations are then unavoidable. We report the case of a young patient suffering electrical injury to both upper limbs caused by a high voltage current, whose evolution was dramatically marked by bilateral disarticulation of both shoulders.

[Not Available]

Electrical burns are a major cause of bodily harm due to the mechanism and effect of the lesions. This prompts us to study these lesions and their management in order to reduce the morbidity caused by this type of accident. We conducted a retrospective descriptive observational study of patients hospitalized for electrical burns. This study includes 23 patients. The average age was 25.74 years. The most common occurrence was a domestic accident in 13 cases (56.5%), a work accident in 8 cases (34.8%), and a road traffic accident in 2 cases (8.7%). Fasciotomy was performed on six patients: five had high voltage injuries. Necrosis excision was performed at 8.26 days ± 5.55 days. Seven amputations were performed including 6 at the upper limb. Twenty flaps were used on 12 patients. Locoregional flaps were performed for 15 zones, and distant flaps as a solution in the event of locoregional flap failure. Five cases had immediate reconstruction because of exposure of noble elements, 3 showing necrosis of the flap. The average healing time was 45 days. Seven patients who underwent a reconstruction by flap healed after this period. The main results of the study show that conventional emergency decompression does not appear to reduce the amputation rate, the use of local and locoregional flaps in the initial phase (<21 days) carries a significant risk of suffering and necrosis, and that antithrombotic prevention or the use of flaps does not seem to have an impact on healing delays.

Targeted release of stromal cell-derived factor-1α by reactive oxygen species-sensitive nanoparticles results in bone marrow stromal cell chemotaxis and homing, and repair of vascular injury caused by electrical burns

Rapid repair of vascular injury is an important prognostic factor for electrical burns. This repair is achieved mainly via stromal cell-derived factor (SDF)-1α promoting the mobilization, chemotaxis, homing, and targeted differentiation of bone marrow mesenchymal stem cells (BMSCs) into endothelial cells. Forming a concentration gradient from the site of local damage in the circulation is essential to the role of SDF-1α. In a previous study, we developed reactive oxygen species (ROS)-sensitive PPADT nanoparticles containing SDF-1α that could degrade in response to high concentration of ROS in tissue lesions, achieving the goal of targeted SDF-1α release. In the current study, a rat vascular injury model of electrical burns was used to evaluate the effects of targeted release of SDF-1α using PPADT nanoparticles on the chemotaxis of BMSCs and the repair of vascular injury. Continuous exposure to 220 V for 6 s could damage rat vascular endothelial cells, strip off the inner layer, significantly elevate the local level of ROS, and decrease the level of SDF-1α. After injection of Cy5-labeled SDF-1α-PPADT nanoparticles, the distribution of Cy5 fluorescence suggested that SDF-1α was distributed primarily at the injury site, and the local SDF-1α levels increased significantly. Seven days after injury with nanoparticles injection, aggregation of exogenous green fluorescent protein-labeled BMSCs at the injury site was observed. Ten days after injury, the endothelial cell arrangement was better organized and continuous, with relatively intact vascular morphology and more blood vessels. These results showed that SDF-1α-PPADT nanoparticles targeted the SDF-1α release at the site of injury, directing BMSC chemotaxis and homing, thereby promoting vascular repair in response to electrical burns.

Case report of a high voltage electrical injury and review of the indications for early fasciotomy in limb salvage of an electrically injured limb

Electrical injuries make up a relatively small portion of burn injuries. Safety measures in place on domestic electricity supply have reduced the occurrence of high voltage electrical injuries. We present the case of a young man who sustained a high voltage electrical injury on all four limbs. Early fasciotomy was performed on both his hands and forearms. Despite early compartment release, the left upper limb deteriorated and required amputation. In this article we discuss the indications, outcomes and complications of early fasciotomy.

Upon admission coagulation and platelet function in patients with thermal and electrical injuries

RATIONAL

There has been increased focus on hemostatic potential and function in the initial assessment of the patient with traumatic injuries, that not been extensively studied in patients with burns. We proposed to determine the hemostatic potential of patients with burns upon admission to the emergency department and contrasted their condition with that of healthy controls and patients with other traumatic injuries. In addition we assessed differences due to thermal versus electrical injury and evaluated the effect of burn size.

METHODS

This is a patient based prospective observational study conducted with delayed consented. Subjects at the highest level of trauma activation upon admission to the ED had a blood sample collected for research purposes and were subsequently consented. Hemostatic potential was measured by rapid thromelastography (r-TEG^®), thrombin generation by calibrated automated thrombogram (CAT) and platelet function by Multiplate^® using five activators. Burn subjects were compared to subjects with other traumatic injuries and controls. Within the burn subjects additional analysis compared mechanism (thermal vs. electrical) and burn size. Values are medians (IQR).

RESULTS

Two hundred and eighty two trauma patients (with burns n=40, 14%) and 27 controls were enrolled. Upon admission, compared to controls, subjects with burns or trauma were hyper-coagulable based on r-TEG and CAT, with increased rates of clot formation and thrombin generation. There were no differences in burns compared to other traumatic injuries. The presence of hyper-coagulation did not appear to be related to the type of burn or the percentage of total body surface area involved. Employing previous defined cut points for R-TEG driven therapeutic interventions burn patients had similar rates of hyper- and hypo-coagulation noted in patients with traumatic injuries.

CONCLUSION

Upon admission patients with burns are in a hyper-coagulable state similar to that of other trauma patients. Employing demonstrated cut points of hemostatic potential in trauma patients associated with increased risk of poor outcomes demonstrated the incidence in burn patients to be similar, suggesting that these values could be used in the early assessment of the patient with burns to guide treatment interventions.

Increased anaesthesia duration increases venous thromboembolism risk in plastic surgery: A 6-year analysis of over 19,000 cases using the NSQIP dataset

BACKGROUND

Venous thromboembolism (VTE) is a significant cause of morbidity and mortality, particularly in the postoperative setting. Various risk stratification schema exist in the plastic surgery literature, but do not take into account variations in procedure length. The putative risk of VTE conferred by increased length of time under anaesthesia has never been rigorously explored.

AIM

The goal of this study is to assess this relationship and to benchmark VTE rates in plastic surgery.

METHODS

A large, multi-institutional quality-improvement database was queried for plastic and reconstructive surgery procedures performed under general anaesthesia between 2005-2011. In total, 19,276 cases were abstracted from the database. Z-scores were calculated based on procedure-specific mean surgical durations, to assess each case's length in comparison to the mean for that procedure. A total of 70 patients (0.36%) experienced a post-operative VTE. Patients with and without post-operative VTE were compared with respect to a variety of demographics, comorbidities, and intraoperative characteristics. Potential confounders for VTE were included in a regression model, along with the Z-scores.

RESULTS

VTE occurred in both cosmetic and reconstructive procedures. Longer surgery time, relative to procedural means, was associated with increased VTE rates. Further, regression analysis showed increase in Z-score to be an independent risk factor for post-operative VTE (Odds Ratio of 1.772 per unit, p-value < 0.001). Subgroup analyses corroborated these findings.

CONCLUSIONS

This study validates the long-held view that increased surgical duration confers risk of VTE, as well as benchmarks VTE rates in plastic surgery procedures. While this in itself does not suggest an intervention, surgical time under general anaesthesia would be a useful addition to existing risk models in plastic surgery.

Pediatric electrical burn injuries: experience of a large tertiary care hospital and a review of electrical injury

A retrospective review of all patients admitted between February 2004 and December 2009, with a diagnosis of burns associated with electrocution, was conducted at The Hospital for Sick Children, Toronto, Ontario, Canada. Data regarding type of electrocution and associated burns were collected. Of the 36 patients identified, 31 (86%) were shocked by electrical current, and 5 (14%) by lightning. Most burns associated with current were first degree (58%). The upper limbs, most frequently the wrist and arm (n = 23), were injured in 26 patients, and the lower limb in 2 patients, whereas 3 patients suffered multiple sites of injury. Twenty-eight patients were treated conservatively with dressings and minor surgical interventions such as debridement and primary repair. The remainder required excision and/or grafting. Fasciotomy and/or escharotomy were performed in 2 patients, and no one required amputation. Burns associated with electrical injuries remain a worldwide problem, responsible for considerable morbidity and mortality. They can usually be prevented through simple safety measures. An effective prevention program would help address this problem.

Assessment of postoperative venous thromboembolism risk in plastic surgery patients using the 2005 and 2010 Caprini Risk score

BACKGROUND

Venous thromboembolism is an important patient safety issue. The authors sought to compare the predictive capacity of the 2005 and 2010 Caprini Risk Assessment Models for perioperative venous thromboembolism risk.

METHODS

The authors performed a retrospective, observational, crossover study using an established surgical outcomes database. A total of 3334 adult plastic surgery patients were identified. Patients were risk-stratified using both the 2005 and 2010 Caprini Risk Assessment Models. Each patient served as his or her own control, resulting in precise matching for identified and unidentified confounders. The outcome of interest was 60-day, symptomatic venous thromboembolism. The predictive capacities of the 2005 and 2010 Caprini risk scores were compared.

RESULTS

Use of the 2010 Caprini Risk Assessment Model resulted in a systematic increase in the aggregate risk score. The median 2010 Caprini score was significantly higher than the median 2005 Caprini score (6 versus 5, p<0.001). When compared with the 2010 model, the 2005 Caprini Risk Assessment Model was able to better separate the lowest and highest risk patients from one another. Patients classified as "super-high" risk (Caprini score>8) using the 2005 Caprini Risk Assessment Model were significantly more likely to have a 60-day venous thromboembolism event when compared with patients classified as super-high risk using the 2010 guidelines (5.85 percent versus 2.52 percent, p=0.021).

CONCLUSIONS

When compared with the 2010 Caprini Risk Assessment Model, the 2005 Caprini Risk Assessment Model provides superior risk stratification. The 2005 Caprini Risk Assessment Model is the more appropriate method to risk-stratify plastic surgery patients for perioperative venous thromboembolism risk.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Risk, II.

Creation and validation of a simple venous thromboembolism risk scoring tool for thermally injured patients: analysis of the National Burn Repository

Venous thromboembolism (VTE) has been identified as a major patient safety issue. The authors report their use of the National Burn Repository (NBR) to create and validate a weighted risk scoring system for VTE. Adult patients with thermal injury from the NBR admitted between 1995 and 2009 were included. Independent variables were either known or could be derived at the time of admission, including TBSA burned, inhalation injury, gender, and age. The dependent variable was VTE, a composite variable of patients with deep venous thrombosis, and pulmonary embolus. The dataset was split into working and validation sets using a random number generator. Multivariable logistic regression identified independent predictors. β-coefficients for independent predictors were used to generate a weighted risk score. The NBR contained 22,618 patients who met inclusion criteria. The working and validation sets were not statistically different for demographics or risk factors. In the working set, the presence of inhalation injury and increased TBSA were independent predictors of VTE. Adjusted β-coefficients were used to generate a weighted risk score, which showed excellent discrimination for VTE in both the working (c-statistic 0.774) and the validation (c-statistic 0.750) sets. As risk score increased, a linear increase in observed VTE rate was demonstrated in both working and validation sets. The authors have created and validated a simple risk score model to predict VTE risk in thermally injured patients using the NBR. The model is based on risk factors that are easily identified during initial patient contact.

Acquired inpatient risk factors for venous thromboembolism after thermal injury

Acquired, in-hospital risk factors that contribute to venous thromboembolism (VTE) risk after thermal injury remain unknown. The authors performed a retrospective, matched case-control study to examine associations between acquired, in-hospital risk factors and development of VTE. They identified thermally injured patients who were diagnosed with VTE over an 8.5-year period at our institution. VTE patients were matched 2:1 with non-VTE controls based on age, TBSA burned, and presence of inhalation injury. Retrospective chart review identified recognized VTE risk factors such as infectious complications, operative procedures, or central venous access. For each VTE patient and their matched controls, data analysis was limited to the time period before VTE developed. This allowed examination of differences in the pre-VTE hospital course between patients with and without VTE. Nineteen patients with VTE were matched 2:1 with non-VTE controls. No significant differences were present between groups for age, gender, TBSA, inhalation injury, body mass index, ventilator days, and intensive care unit or hospital length of stay. Patients with VTE had significantly more operations (3.7 vs 1.9, P = .038), were more likely to have pneumonia (73.7 vs 43.2%, P = .031), or have central venous line insertion (84.2 vs 51.4%, P = .016) in the pre-VTE period. No significant differences were present for positive blood cultures, urinary tract infections, or burn wound infection between groups. Our study demonstrates that number of operations, pneumonia, and central venous access are significantly associated with VTE after thermal injury. These in-hospital risk factors should be incorporated into future risk assessment models.

Temporal changes in deep venous thrombosis risk after electrical injury

Previous work has used the National Burn Repository to examine deep venous thrombosis (DVT) after electrical injury. However, these studies were limited and could not examine when DVT occurs after electrical injury. In addition, the utility of risk assessment models for DVT risk stratification has not been examined in this patient population. The authors performed a retrospective chart review of electrically injured patients at a single, American Burn Association- and American College of Surgeons-verified burn center over a 9-year period. Risk factors were identified and used to calculate Caprini scores at baseline and time of discharge. Outcomes of interest included symptomatic DVT or pulmonary embolism and time to DVT or pulmonary embolism. A total of 77 electrically injured patients were identified. DVT incidence was 6.5%. Patients with DVT had significantly higher TBSA (27.8% vs 3.8%), mean number of operations (4.8 vs 0.3), central venous catheter insertion (100% vs 5.3%), ventilator days (16.2 vs 0.3), intensive care unit days (24.4 vs 0.9), and mean change in Caprini score (18.6 vs 1.3) during hospitalization. Baseline Caprini scores were low, and DVT events occurred only after multiple risk factors were present; the average time-to-event was hospital day 17. Among patients with Caprini score >8, DVT incidence increased to 62%. In our single-center experience, the Caprini score was able to quantify DVT risk after electrical injury. In our series of 77 patients, the overall incidence of DVT was 6.5%. However, among patients whose Caprini score reached >8 during hospitalization, DVT incidence increased to 62%.