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OBJECTIVES: ABRUPT was a prospective, noninterventional, observational study of resuscitation practices at 21 burn centers. The primary goal was to examine burn resuscitation with albumin or crystalloids alone, to design a future prospective randomized trial. SUMMARY BACKGROUND DATA: No modern prospective study has determined whether to use colloids or crystalloids for acute burn resuscitation. METHODS: Patients ≥18 years with burns ≥ 20% total body surface area (TBSA) had hourly documentation of resuscitation parameters for 48 hours. Patients received either crystalloids alone or had albumin supplemented to crystalloid based on center protocols. RESULTS: Of 379 enrollees, two-thirds (253) were resuscitated with albumin and one-third (126) were resuscitated with crystalloid alone. Albumin patients received more total fluid than Crystalloid patients (5.2 ± 2.3 vs 3.7 ± 1.7 mL/kg/% TBSA burn/24 hours), but patients in the Albumin Group were older, had larger burns, higher admission Sequential Organ Failure Assessment (SOFA) scores, and more inhalation injury. Albumin lowered the in-to-out (I/O) ratio and was started ≤12 hours in patients with the highest initial fluid requirements, given >12 hours with intermediate requirements, and avoided in patients who responded to crystalloid alone. CONCLUSIONS: Albumin use is associated with older age, larger and deeper burns, and more severe organ dysfunction at presentation. Albumin supplementation is started when initial crystalloid rates are above expected targets and improves the I/O ratio. The fluid received in the first 24 hours was at or above the Parkland Formula estimate.
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Albúminas , Fluidoterapia , Humanos , Soluciones Isotónicas/uso terapéutico , Estudios Prospectivos , Estudios Retrospectivos , Resultado del Tratamiento , Soluciones Cristaloides/uso terapéutico , Albúminas/uso terapéutico , América del NorteRESUMEN
Clostridium collagenase has provided superior clinical results in achieving digestion of immediate and accumulating devitalized collagen tissue. Recent studies suggest that debridement via Clostridium collagenase modulates a cellular response to foster an anti-inflammatory microenvironment milieu, allowing for a more coordinated healing response. In an effort to better understand its role in burn wounds, we evaluated Clostridium collagenase's ability to effectively minimize burn progression using the classic burn comb model in pigs. Following burn injury, wounds were treated with Clostridium collagenase or control vehicle daily and biopsied at various time points. Biopsies were evaluated for factors associated with progressing necrosis as well as inflammatory response associated with treatment. Data presented herein showed that Clostridium collagenase treatment prevented destruction of dermal collagen. Additionally, treatment with collagenase reduced necrosis (HMGB1) and apoptosis (CC3a) early in burn injuries, allowing for increased infiltration of cells and protecting tissue from conversion. Furthermore, early epidermal separation and epidermal loss with a clearly defined basement membrane was observed in the treated wounds. We also show that collagenase treatment provided an early and improved inflammatory response followed by faster resolution in neutrophils. In assessing the inflammatory response, collagenase-treated wounds exhibited significantly greater neutrophil influx at day 1, with macrophage recruitment throughout days 2 and 4. In further evaluation, macrophage polarization to MHC II and vascular network maintenance were significantly increased in collagenase-treated wounds, indicative of a pro-resolving macrophage environment. Taken together, these data validate the impact of clostridial collagenases in the pathophysiology of burn wounds and that they complement patient outcomes in the clinical scenario.
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Quemaduras , Colagenasas/uso terapéutico , Desbridamiento/métodos , Cicatrización de Heridas/efectos de los fármacos , Animales , Quemaduras/tratamiento farmacológico , Quemaduras/patología , Clostridium/enzimología , Colagenasas/farmacología , Modelos Animales de Enfermedad , Femenino , Necrosis/tratamiento farmacológico , Necrosis/etiología , Piel/efectos de los fármacos , Piel/patología , PorcinosRESUMEN
BACKGROUND: Pediatric facial fractures, although uncommon, have a significant impact on public health and the US economy by the coexistence of other injuries and developmental deformities. Violence is one of the most frequent mechanisms leading to facial fracture. Teaching hospitals, while educating future medical professionals, have been linked to greater resource utilization in differing scenarios. This study was designed to compare the differences in patient characteristics and outcomes between teaching and non-teaching hospitals for violence-related pediatric facial fractures. METHODS: Using the 2000-2009 Kids' Inpatient Database, 3881 patients younger than 18 years were identified with facial fracture and external cause of injury code for assault, fight, or abuse. Patients admitted at teaching hospitals were compared to those admitted at non-teaching hospitals in terms of demographics, injuries, and outcomes. RESULTS: Overall, 76.2% of patients had been treated at teaching hospitals. Compared to those treated at non-teaching hospitals, these patients were more likely to be younger, non-white, covered by Medicaid, from lower income zip codes, and have thoracic injuries; but mortality rate was not significantly different. After adjusting for potential confounders, teaching status of the hospital was not found as a predictor of either longer lengths of stay (LOS) or charges. CONCLUSIONS: There is an insignificant difference between LOS and charges at teaching and non-teaching hospitals after controlling for patient demographics. This suggests that the longer LOS observed at teaching hospitals is related to these institutions being more often involved in the care of underserved populations and patients with more severe injuries.
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Precios de Hospital/estadística & datos numéricos , Hospitales de Enseñanza/estadística & datos numéricos , Tiempo de Internación/estadística & datos numéricos , Traumatismos Maxilofaciales/epidemiología , Fracturas Craneales/epidemiología , Violencia/estadística & datos numéricos , Adolescente , Niño , Maltrato a los Niños/estadística & datos numéricos , Preescolar , Bases de Datos Factuales , Femenino , Hospitales de Enseñanza/economía , Humanos , Lactante , Tiempo de Internación/economía , Masculino , Traumatismos Maxilofaciales/economía , Traumatismos Maxilofaciales/etiología , Traumatismos Maxilofaciales/terapia , Estudios Retrospectivos , Fracturas Craneales/economía , Fracturas Craneales/etiología , Fracturas Craneales/terapia , Resultado del Tratamiento , Estados Unidos/epidemiologíaRESUMEN
OBJECTIVE: Burn injuries are one of the leading causes of morbidity and mortality in young children. The Kids' Inpatient Database (KID) and National Burn Repository (NBR) are two large national databases that can be used to evaluate outcomes and help quality improvement in burn care. Differences in the design of the KID and NBR could lead to differing results affecting resultant conclusions and quality improvement programs. This study was designed to validate the use of KID for burn epidemiologic studies, as an adjunct to the NBR. METHODS: Using the KID (2003, 2006, and 2009), a total of 17,300 nonelective burn patients younger than 20 y old were identified. Data from 13,828 similar patients were collected from the NBR. Outcome variables were compared between the two databases. RESULTS: Comparisons revealed similar patient distribution by gender, race, and burn size. Inhalation injury was more common among the NBR patients and was associated with increased mortality. The rates of respiratory failure, wound infection, cellulitis, sepsis, and urinary tract infection were higher in the KID. Multiple regression analysis adjusting for potential confounders demonstrated similar mortality rate but significantly longer length of stay for patients in the NBR. CONCLUSIONS: Despite differences in the design and sampling of the KID and NBR, the overall demographic and mortality results are similar. The differences in complication rate and length of stay should be explored by further studies to clarify underlying causes. Investigations into these differences should also better inform strategies to improve burn prevention and treatment.
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Quemaduras/mortalidad , Sistema de Registros , Adolescente , Quemaduras/complicaciones , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Estados Unidos/epidemiología , Adulto JovenRESUMEN
BACKGROUND: Home oxygen therapy is a mainstay of treatment for patients with various cardiopulmonary diseases. In spite of warnings against smoking while using home oxygen, many patients sustain burn injuries. OBJECTIVES: We aimed to quantify the morbidity and mortality of such patients admitted to our regional burn unit over a 6-year period. METHODS: A retrospective chart review of all patients admitted to a regional burn center from 2008 through 2013 was completed. Admitted patients sustaining burns secondary to smoking while using home oxygen therapy were selected as the study population to determine morbidity. RESULTS: Fifty-five subjects were admitted to the burn unit for smoking-related home oxygen injuries. The age range was 40-84 years. Almost all subjects were on home oxygen for chronic obstructive pulmonary disease (96%). Seventy-two percent of burns involved <5% of the total body surface area, 51% of patients were intubated, and of those 33% had evidence of inhalation injury. The hospital mortality rate was 14.5%. The mean length of hospital stay was 8.6 days, and 54.5% were discharged to a nursing home or another advanced facility. Finally, concomitant substance abuse was found in 27%, and a previous history of injury from smoking while on home oxygen was discovered in 14.5%. CONCLUSIONS: This single-center analysis is one of the largest describing burn injuries stemming from smoking while using home oxygen therapy. We identified the morbidity and mortality associated with these injuries. Ongoing education and careful consideration of prescribing home oxygen therapy for known smokers is highly encouraged.
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Quemaduras/etiología , Terapia por Inhalación de Oxígeno , Fumar/efectos adversos , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Persona de Mediana Edad , Embarazo , Estudios RetrospectivosRESUMEN
Introduction: Transcutaneous laser-assisted drug delivery (LADD) is recognized as a developing therapy for skin disorders. Method: Current literature was reviewed to summarize current applications for LADD. Discussion: 12 clinical applications for this therapy are currently reported. Conclusion: LADD has potential for wide application in skin disorder treatment. Lay Summary: Laser assisted drug delivery improves drug bioavailability for treatment of skin disorders. This technique is being assessed clinically in disorders ranging from skin cancers to alopecia.
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OBJECTIVES: Evaluate the prevalence of an anomalous posterior vertebral artery (VA) in the neural foramen and to see if any factors might correlate with proximity of the VA to needle location in a cervical transforaminal epidural steroid injection (CTFESI). METHODS: A radiologist with subspecialty training in neuroradiology documented VA location in relation to the neural foramen on axial views of 198 consecutive computed tomography angiograms done for various reasons, 11 were excluded because of poor imaging or occluded VA. The levels of C2-3 through C6-7 were evaluated, where the VA courses within the foramen. The distance was measured from VA to ideal needle location for a CTFESI. Other data were collected including severity of foraminal stenosis, loss of disc height, and medical history. Analysis was done to see if any factor correlated with anomalous VA location. RESULTS: The VA was in the posterior foramen and within 2 mm of ideal needle location in at least one location in 29% of patients. When looking at the more commonly injected levels of C4-5 through C6-7, the prevalence was 18%. Severity of foraminal stenosis and loss of disc height correlated with VA proximity to typical needle location (both with P < 0.0001). CONCLUSION: The VA can sometimes be in close proximity to the typical target location of a CTFESI. This proximity correlates with severity of foraminal stenosis and loss of disc height. Physicians should be mindful of this and evaluate the T2 axial magnetic resonance imaging before doing CFTESIs.
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Vértebras Cervicales/anatomía & histología , Inyecciones Epidurales/métodos , Arteria Vertebral/anomalías , Corticoesteroides/administración & dosificación , Corticoesteroides/uso terapéutico , Angiografía , Antiinflamatorios/administración & dosificación , Antiinflamatorios/uso terapéutico , Vértebras Cervicales/diagnóstico por imagen , Humanos , Hipertrofia , Prevalencia , Estudios Retrospectivos , Estenosis Espinal/patología , Tomografía Computarizada por Rayos X , Arteria Vertebral/diagnóstico por imagenRESUMEN
To better understand trends in burn treatment patterns related to definitive closure, this study sought to benchmark real-world survey data with national data contained within the National Burn Repository version 8.0 (NBR v8.0) across key burn center practice patterns, resource utilization, and clinical outcomes. A survey, administered to a representative sample of U.S. burn surgeons, collected information across several domains: burn center characteristics, patient characteristics including number of patients and burn size and depth, aggregate number of procedures, resource use such as autograft procedure time and dressing changes, and costs. Survey findings were aggregated by key outcomes (number of procedures, costs) nationally and regionally. Aggregated burn center data were also compared to the NBR to identify trends relative to current treatment patterns. Benchmarking survey results against the NBR v8.0 demonstrated shifts in burn center patient mix, with more severe cases being seen in the inpatient setting and less severe burns moving to the outpatient setting. An overall reduction in the number of autograft procedures was observed compared to NBR v8.0, and time efficiencies improved as the intervention time per TBSA decreases as TBSA increases. Both nationally and regionally, an increase in costs was observed. The results suggest resource use estimates from NBR v8.0 may be higher than current practices, thus highlighting the importance of improved and timely NBR reporting and further research on burn center standard of care practices. This study demonstrates significant variations in burn center characteristics, practice patterns, and resource utilization, thus increasing our understanding of burn center operations and behavior.
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Unidades de Quemados/tendencias , Quemaduras/terapia , Pautas de la Práctica en Medicina/estadística & datos numéricos , Benchmarking , Unidades de Quemados/economía , Recursos Comunitarios , Humanos , Estados UnidosRESUMEN
Methadone is an opioid commonly used for acute pain management in burn patients. One adverse effect of methadone is QTc interval prolongation, which may be associated with adverse cardiac outcomes. There is currently a paucity of data regarding risk of QTc prolongation in burn patients taking methadone and a lack of evidence-based recommendations for monitoring strategies in this population. The study objective was to determine the prevalence, risk factors, and cardiac outcomes related to methadone-associated QTc prolongation in adult burn patients. A total of 91 patients were included and were divided into groups according to maximum QTc. QTc prolongation was defined as greater than or equal to 470 ms (males) or 480 ms (females). There were no differences between groups regarding patient-specific risk factors, baseline QTc, or time to longest QTc. Patients in the prolonged QTc group had a higher rate of cardiac events (44% vs 9%; P < .001), higher median (IQR) change from baseline to longest QTc (61 ms [18,88] vs 23 ms [13,38]; P < .001), higher median (IQR) total daily dose of methadone (90 mg [53,98] vs 53 mg [30,75]; P = .004), and longer median (IQR) length of stay (53 [33,82] vs 35 [26,52] days; P = .008). QTc prolongation in burn patients was associated with increased methadone dose and resulted in a higher rate of cardiac events. This study was the first of its kind to look at risk factors and cardiac outcomes associated with methadone use in burn patients.
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Quemaduras/complicaciones , Síndrome de QT Prolongado/epidemiología , Metadona/efectos adversos , Narcóticos/efectos adversos , Manejo del Dolor/métodos , Adulto , Relación Dosis-Respuesta a Droga , Electrocardiografía , Femenino , Humanos , Indiana/epidemiología , Masculino , Metadona/administración & dosificación , Persona de Mediana Edad , Narcóticos/administración & dosificación , Prevalencia , Estudios Retrospectivos , Factores de RiesgoRESUMEN
Burn patients frequently require autograft harvesting to facilitate wound healing, often resulting in significant pain. Liposomal bupivacaine is indicated for administration into a surgical site to produce postsurgical analgesia. The objective of this study was to evaluate efficacy, safety, and duration of postoperative analgesia with liposomal bupivacaine for donor site pain in burn patients. This was an observational, case-control study including adult patients with <20% total body surface area (TBSA) burned who received liposomal bupivacaine for postoperative pain management after autograft harvesting from lower extremity donor site(s). Patients from the case group were matched to historical control patients treated with traditional pain management. The primary outcome was the cumulative pain scores on postoperative day one measured by the area under the curve (AUC0-24). Secondary outcomes included AUC0-72, total milligram morphine equivalents (MME), length of stay, and adverse events. Data were collected in 36 patients who received liposomal bupivacaine, with 21 patients eligible for matching to historical controls. Patients included in the intervention and control groups were well-matched at baseline. Patients in the intervention group had a significantly lower median (IQR) AUC0-24 [578 (408,740) vs. 680 (544,803); pâ¯=â¯0.05] and shorter length of stay [4 days (1,9.5) vs. 6 days (318); pâ¯=â¯0.01]. No differences in adverse events related to the administration of liposomal bupivacaine or opioid-related adverse events were observed. Results indicate liposomal bupivacaine is safe and effective in burn patients. The results of this study add to the limited body of literature examining efficacy in this population.
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Anestésicos Locales/administración & dosificación , Bupivacaína/administración & dosificación , Quemaduras/cirugía , Dolor Postoperatorio/prevención & control , Recolección de Tejidos y Órganos/métodos , Sitio Donante de Trasplante , Adulto , Analgésicos Opioides/uso terapéutico , Estudios de Casos y Controles , Femenino , Humanos , Tiempo de Internación , Liposomas , Masculino , Persona de Mediana Edad , Manejo del Dolor , Dolor Postoperatorio/tratamiento farmacológico , Estudios Prospectivos , Trasplante de Piel , Trasplante Autólogo , Resultado del TratamientoRESUMEN
Inhalation injury causes significant morbidity and mortality secondary to compromise of the respiratory system as well as systemic effects limiting perfusion and oxygenation. Nebulized heparin reduces fibrin cast formation and duration of mechanical ventilation in patients with inhalation injury. To date, no study has compared both dosing strategies of 5000 and 10,000 units to a matched control group. This multicenter, retrospective, case-control study included adult patients with bronchoscopy-confirmed inhalation injury. Each control patient, matched according to age and percent of total body surface area, was matched to a patient who received 5000 units and a patient who received 10,000 units of nebulized heparin. The primary endpoint of the study was duration of mechanical ventilation. Secondary endpoints included 28-day mortality, ventilator-free days in the first 28 days, difference in lung injury scores, length of hospitalization, incidence of ventilator-associated pneumonia, and rate of major bleeding. Thirty-five matched patient trios met inclusion criteria. Groups were well-matched for age (P = .975) and total body surface area (P = .855). Patients who received nebulized heparin, either 5000 or 10,000 units, had 8 to 11 less days on the ventilator compared to controls (P = .001). Mortality ranged from 3 to 14% overall and was not statistically significant between groups. No major bleeding events related to nebulized heparin were reported. Mechanical ventilation days were significantly decreased in patients who received 5000 or 10,000 units of nebulized heparin. Nebulized heparin, either 5000 units or 10,000 units, is a safe and effective treatment for inhalation injury.
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Anticoagulantes/administración & dosificación , Quemaduras por Inhalación/terapia , Heparina/administración & dosificación , Nebulizadores y Vaporizadores , Respiración Artificial , Administración por Inhalación , Adulto , Broncoscopía , Quemaduras por Inhalación/mortalidad , Femenino , Hospitalización , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Tasa de SupervivenciaRESUMEN
Chronic wounds affect over 6.5 million Americans and are notoriously difficult to treat. Suboptimal oxygenation of the wound bed is one of the most critical and treatable wound management factors, but existing oxygenation systems do not enable concurrent measurement and delivery of oxygen in a convenient wearable platform. Thus, we developed a low-cost alternative for continuous O2 delivery and sensing comprising of an inexpensive, paper-based, biocompatible, flexible platform for locally generating and measuring oxygen in a wound region. The platform takes advantage of recent developments in the fabrication of flexible microsystems including the incorporation of paper as a substrate and the use of a scalable manufacturing technology, inkjet printing. Here, we demonstrate the functionality of the oxygenation patch, capable of increasing oxygen concentration in a gel substrate by 13% (5 ppm) in 1 h. The platform is able to sense oxygen in a range of 5-26 ppm. In vivo studies demonstrate the biocompatibility of the patch and its ability to double or triple the oxygen level in the wound bed to clinically relevant levels.
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Burn injuries generate multisystem physiological derangements. The authors present a case series of three patients developing acute coronary syndrome (ACS) stemming from coronary vasospasm (CVS) over a course of 5 months. This etiology of ACS is significant as it has previously not been described in burn patients and requires a different management algorithm than vaso-occlusive disease.All patients were admitted to a single accredited burn unit. Burn mechanisms were flash burn, chemical fire, and house fire. TBSA were 20%, 72%, and 31%, respectively. Ages were 67-, 41-, and 52-year-old men. All smoked tobacco, and one had diabetes and coronary artery disease. CVS presented with acute onset ST elevations, severe bradycardia, and cardiac arrest in all. Diagnosis was made via EKG and angiography. Treatment was undertaken with nitrates and calcium channel blockers. One of the patients died of refractory disease.The authors identified CVS in burn patients with an incidence of 2% of admissions and accounting for 17% of our burn mortality during this period. To date, there is no linkage between CVS and burns described in humans; however, there is a well-described animal model in rats. The risk factors for CVS are common among burn patients, particularly smoking and endothelial dysfunction. CVS may be a significant cause of ACS in burn patients, and it should be considered in the setting of ACS especially with a negative angiography. Knowledge of this disease state can change burn management to mitigate risk and accommodate specific cardiac treatments.
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Quemaduras/complicaciones , Vasoespasmo Coronario/etiología , Adulto , Anciano , Quemaduras/cirugía , Angiografía Coronaria , Vasoespasmo Coronario/diagnóstico , Vasoespasmo Coronario/tratamiento farmacológico , Electrocardiografía , Resultado Fatal , Humanos , Masculino , Persona de Mediana Edad , Obesidad/complicaciones , Fumar/efectos adversosRESUMEN
Early excision and autografting are standard care for deeper burns. However, donor sites are a source of significant morbidity. To address this, the ReCell® Autologous Cell Harvesting Device (ReCell) was designed for use at the point-of-care to prepare a noncultured, autologous skin cell suspension (ASCS) capable of epidermal regeneration using minimal donor skin. A prospective study was conducted to evaluate the clinical performance of ReCell vs meshed split-thickness skin grafts (STSG, Control) for the treatment of deep partial-thickness burns. Effectiveness measures were assessed to 1 year for both ASCS and Control treatment sites and donor sites, including the incidence of healing, scarring, and pain. At 4 weeks, 98% of the ASCS-treated sites were healed compared with 100% of the Controls. Pain and assessments of scarring at the treatment sites were reported to be similar between groups. Significant differences were observed between ReCell and Control donor sites. The mean ReCell donor area was approximately 40 times smaller than that of the Control (P < .0001), and after 1 week, significantly more ReCell donor sites were healed than Controls (P = .04). Over the first 16 weeks, patients reported significantly less pain at the ReCell donor sites compared with Controls (P ≤ .05 at each time point). Long-term patients reported higher satisfaction with ReCell donor site outcomes compared with the Controls. This study provides evidence that the treatment of deep partial-thickness burns with ASCS results in comparable healing, with significantly reduced donor site size and pain and improved appearance relative to STSG.
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Quemaduras/cirugía , Trasplante de Piel , Recolección de Tejidos y Órganos/instrumentación , Adolescente , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Mallas Quirúrgicas , Trasplante Autólogo , Resultado del Tratamiento , Cicatrización de Heridas , Adulto JovenRESUMEN
BACKGROUND: Lean is a process improvement strategy that can improve efficiency of the perioperative process. The purpose of this study was to identify etiologies of late surgery start times, implement Lean interventions, and analyze their effects. METHODS: A retrospective review of all first-start surgery cases was performed. Lean was implemented in May 2015, and cases 7 months before and after implementation were analyzed. RESULTS: A total of 4,492 first-start cases were included; 2,181 were pre-Lean and 2,311 were post-Lean. The post-Lean group had significantly higher on-time starts than the pre-Lean group (69.0% vs 57.0%, P < .01). The most common delay etiology was surgeon-related for both groups. Delayed post-Lean cases were significantly less likely to be due to preoperative assessment (14.9% vs 9.9%, P < .01) and more likely due to patient-related (16.5% vs 22.3%, P < .01) or chaplain (1.8% vs 4.0%, P < .01) factors. Delayed starts occurred more often on snowy and cold days, and less often on didactic days (P < .01). CONCLUSIONS: Modifying preoperative tasks using Lean methods can improve operating room efficiency and increase on-time starts.
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Eficiencia Organizacional , Atención Perioperativa , Mejoramiento de la Calidad , Centros Médicos Académicos , Humanos , Evaluación de Procesos, Atención de Salud , Estudios Retrospectivos , Factores de Riesgo , Estaciones del Año , Factores de Tiempo , Tiempo (Meteorología)RESUMEN
We hypothesized that the addition of silver nanoparticles (AgNP) to a dermal substrate would impart antibacterial properties without inhibiting the proliferation of contained cells. Our in vitro model was based on the commercial substrate, Integra. The substrate was prepared by simple immersion into 0 to 1% suspension of AgNP (75 or 200 nm diameter) followed by rinsing for 20 minutes and sterilization under an ultraviolet C lamp. A total of 107 human adipose stem cells per cubic centimeter were injected and after 1 hour, 6 × 105 keratinocytes/cm2 were seeded and cultured for up to 14 days. Constructs were evaluated using a metabolic assay (WST-1), and hematoxylin and eosin and immunoperoxidase staining. Bactericidal activity was measured using a log reduction assay against bacteria that are prevalent in burns. The presence of AgNP did not significantly change the metabolic activity of constructs after 14 days of culture, and the distribution of cells within the substrate was unchanged from the controls that did not have AgNP. Antibacterial activity of Integra containing AgNP (75 nm diameter) was concentration dependent. In conclusion, the addition of AgNP to the dermal substrate suppressed bacterial growth but did not significantly affect cell proliferation, and may represent an important property to incorporate into a future clinical skin regeneration system.
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Antibacterianos/farmacología , Nanopartículas/uso terapéutico , Regeneración/efectos de los fármacos , Plata/uso terapéutico , Antibacterianos/administración & dosificación , Antibacterianos/uso terapéutico , Quemaduras/tratamiento farmacológico , Sulfatos de Condroitina/administración & dosificación , Sulfatos de Condroitina/uso terapéutico , Colágeno/administración & dosificación , Colágeno/uso terapéutico , Humanos , Queratinocitos/trasplante , Nanopartículas/administración & dosificación , Plata/administración & dosificación , Plata/farmacología , Piel/lesiones , Trasplante Autólogo/métodosRESUMEN
Inhalation injury (IHI) causes significant morbidity and mortality in burn victims due to both local and systemic effects. Nebulized heparin promotes improvement in lung function and decreased mortality in IHI by reducing the inflammatory response and fibrin cast formation. The study objective was to determine if nebulized heparin 10,000 units improves lung function and decreases mechanical ventilation duration, mortality, and hospitalization length in IHI with minimal systemic adverse events. This retrospective, case-control study evaluated efficacy and safety of nebulized heparin administered to mechanically ventilated adults admitted within 48 hr of confirmed IHI. Nebulized heparin 10,000 units was administered Q4H for 7 days, or until extubation if sooner, alternating with albuterol and a mucolytic. Patients were matched on a case-by-case basis based on percent TBSA burn and age to patients from a historical group with IHI before heparin protocol implementation. The primary outcome was duration of mechanical ventilation. Secondary outcomes included lung injury score, ventilator-free days during the first 28 days, 28-day mortality, hospitalization length, ventilator-associated pneumonia incidence, bronchoscopy incidence, and bleeding events. Data were collected in 72 patients, 36 of which received nebulized heparin and 36 historical controls. Two patients from the heparin group and three patients from the control group died/were discharged while on the ventilator. Data were analyzed separately with 1) all subjects included and 2) with subjects who died/were discharged on the ventilator excluded. In the latter comparison, patients receiving nebulized heparin demonstrated a statistically significant decrease in median (interquartile range) duration of initial mechanical ventilation compared with controls [7.0 (4.0, 13.5) vs. 14.5 (5.3, 22.3) days; P = .044]. Patients in the heparin group had a significantly increased number of median (interquartile range) ventilator-free days in the first 28 days [21.0 (14.5-24.0) vs 13.5 (4.3-22.8) days; P = .031]. There were no differences in hospitalization length, lung injury score during the first 7 days post injury, 28-day mortality, ventilator-associated pneumonia rate, or bleeding events. Nebulized heparin 10,000 units in conjunction with a beta-agonist and mucolytic produced a significant decrease in duration of mechanical ventilation and increase in ventilator-free days in adult patients with IHI. Nebulized heparin was safe and did not result in an increase in bleeding events. To our knowledge, this is the first case-control study with matched cohorts based on age and %TBSA which are significant factors contributing to morbidity and mortality in IHI.
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Anticoagulantes/administración & dosificación , Quemaduras por Inhalación/terapia , Heparina/administración & dosificación , Nebulizadores y Vaporizadores , Administración por Inhalación , Adulto , Albuterol/uso terapéutico , Broncodilatadores/uso terapéutico , Expectorantes/uso terapéutico , Femenino , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Respiración Artificial , Estudios Retrospectivos , Resultado del TratamientoRESUMEN
BACKGROUND: There is an increased push for plastic surgery units in the United States to become independent departments administered autonomously rather than as divisions of a multispecialty surgery department. The purpose of this research was to determine whether there are any quantifiable differences in the academic performance of departments versus divisions. METHODS: Using a list of the plastic surgery units affiliated with the American Council of Academic Plastic Surgeons, unit Web sites were queried for departmental status and to obtain a list of affiliated faculty. Academic productivity was then quantified using the SCOPUS database. National Institutes of Health funding was determined through the Research Portfolio Online Reporting Tools database. RESULTS: Plastic surgery departments were comparable to divisions in academic productivity, evidenced by a similar number of publications per faculty (38.9 versus 38.7; p = 0.94), number of citations per faculty (692 versus 761; p = 0.64), H-indices (9.9 versus 9.9; p = 0.99), and National Institutes of Health grants (3.25 versus 2.84; p = 0.80), including RO1 grants (1.33 versus 0.84; p = 0.53). There was a trend for departments to have a more equitable male-to-female ratio (2.8 versus 4.1; p = 0.06), and departments trained a greater number of integrated plastic surgery residents (9.0 versus 5.28; p = 0.03). CONCLUSION: This study demonstrates that the academic performance of independent plastic surgery departments is generally similar to divisions, but with nuanced distinctions.
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The prevalence of cytomegalovirus in the burn population is high. However, its role in the clinical management of burn patients is still being defined. This report documents a 41-year-old man who developed cytomegalovirus (CMV) colitis after being admitted with a 72% burn. Before the administration of ganciclovir, the authors had difficulty controlling his quantitative wound cultures with serial debridements, topical agents, and systemic antibiotics for known pathogens, which led to graft loss. After the ganciclovir was given, his quantitative wound cultures improved without changing the authors' topical agents or systemic antibiotics and had improved graft take. Whether CMV infection alone contributed to an increased morbidity in this patient or the combination of bacteria/fungal infection with CMV led to a synergistic effect is still not clearly understood. CMV may have contributed to a dysfunction in his cell mediated immunity, which, in turn, lowered the bacterial and fungal load necessary to cause graft loss. Patients who continue to do poorly despite adequate treatment for known pathogens may need to be screened for CMV and treated.