Risco de choque em pacientes com hemorragia grave: caracterização e atuação do enfermeiro do trauma / Risk of shock in patients with severe hemorrhage: characterization and the trauma nurse role / Riesgo de choque en pacientes con hemorragia severo: caracterización y actuación de enfermeras de trauma

Objetivo: Apresentar as características clínicas dos pacientes vítimas de trauma que necessitaram de transfusão emergencial para uma abordagem do Diagnóstico de Enfermagem "Risco de Choque"; descrever a atuação da equipe de Enfermeiros do Trauma nesse contexto. Métodos: Trata-se de um estudo descritivo, retrospectivo, de abordagem quantitativa. Os dados retratam o período de outubro de 2018 a dezembro de 2019, perfazendo um total de 447 pacientes com choque hemorrágico por trauma inseridos no Protocolo de Transfusão Maciça de um hospital público. Resultados: O "Risco de Choque" foi o diagnóstico de enfermagem prioritário nos pacientes com hemorragia grave por trauma. Houve predominância do sexo masculino, vítimas de politraumatismo em sua maioria, com idade entre 18 e 29 anos. 197 pacientes apresentaram líquido livre que foi detectado através do exame de ultrassom de emergência nos pacientes com trauma torácico ou abdominal. O Serviço de Atendimento Móvel de Urgência foi o meio utilizado por 378 pacientes para atendimento pré-hospitalar. Conclusão: A caracterização mostra a gravidade desses casos, com necessidade de transfusão maciça. O conhecimento desses fatores pela equipe multiprofissional de pacientes críticos com hemorragia grave associada ao trauma é fundamental, tornando-se necessária a abordagem do diagnóstico de enfermagem "risco de choque" pelo profissional Enfermeiro. (AU)

Objective: To present the clinical characteristics of the trauma patients who required emergency transfusion for an approach to the Nursing Diagnosis "Risk of Shock"; describe the role of the Trauma Nurses team in this context. Methods: This is a descriptive, retrospective study with a quantitative approach. The data portrays the period from October 2018 to December 2019, making up a total of 447 patients with traumatic hemorrhagic shock inserted in the Mass Transfusion Protocol of a public hospital. Results: There was a predominance of male subjects, victims polytrauma in that majority, aged between 18 and 29 years old. 197 patients had free fluid that was detected by emergency ultrasound examination in patients with chest or abdominal trauma. The Mobile Emergency Care Service was the resource used by 378 patients to the pre-hospital care. Conclusion: The characterization shows the severity of these cases, requiring massive transfusion. The knowledge of these factors by the multidisciplinary team of critically ill patients with severe hemorrhage associated with trauma is essential, making it necessary for the nursing professional to approach the nursing diagnosis "risk of shock". (AU)

Objetivo: Presentar las características clínicas de los pacientes traumatizados que requirieron transfusión urgente para el abordaje del Diagnóstico de Enfermería "Riesgo de Choque"; describir el papel del equipo de enfermeras de trauma en este contexto. Métodos: Se trata de un estudio descriptivo, retrospectivo con enfoque cuantitativo. Los datos retratan el período de octubre de 2018 a diciembre de 2019, lo que hace un total de 447 pacientes con choque hemorrágico traumático insertado en el Protocolo de Transfusión Masiva de un hospital público. Resultados: El "Riesgo de Choque" fue el diagnóstico de enfermería prioritario en los pacientes con hemorragia por trauma severo. Predominó el sexo masculino, mayoritariamente víctimas de politraumatismos, con edades comprendidas entre los 18 y 29 años. 197 pacientes tenían líquido libre que fue detectado por el examen de ultrasonido de emergencia con traumatismo torácico o abdominal. El Servicio Móvil de Atención de Emergencias fue el medio utilizado por 378 pacientes para la atención prehospitalaria. Conclusión: La caracterización muestra la gravedad de estos casos, requiriendo transfusión masiva. El conocimiento de estos factores por parte del equipo multidisciplinario de pacientes críticos con hemorragia severa asociada a trauma es fundamental, por lo que es necesario que el profesional de enfermería aborde el diagnóstico de enfermería "riesgo de shock". (AU)

Predictores de mortalidad precoz en pacientes con trauma complejo hemorrágico / Early mortality predictors in patients with complex hemorrhagic trauma

RESUMEN Fundamento: El trauma complejo es un problema de salud a nivel mundial y cuando es de tipo hemorrágico la mortalidad es superior a los otros tipos de traumas complejos. Objetivo: Determinar las variables predictoras de mortalidad precoz en pacientes hospitalizados con trauma complejo hemorrágico en una institución hospitalaria del segundo nivel de atención en Cuba. Metodología: Se realizó un estudio transversal en el Hospital General Provincial Camilo Cienfuegos de Sancti Spíritus, durante 6 años. Se incluyeron 207 pacientes. Las variables se agruparon en sociodemográficas, enfermedades crónicas asociadas, mecanismo lesional, tipo de trauma, localización topográfica, tiempo entre admisión hospitalaria, diagnóstico y tratamiento, complicaciones precoces, tratamiento médico y quirúrgico, y mortalidad precoz. Se elaboró un árbol de decisión mediante el método Chaid exhaustivo, la variable dependiente fue la mortalidad por trauma complejo hemorrágico. Resultados: Predominaron los pacientes del sexo masculino (85 %), con 60 años y menos (83 %), con trauma contuso (57.5 %) y politraumatizados (42.5 %). Predominaron también los que presentaron acidosis metabólica (66.7 %), coagulopatía aguda (44.4 %), hipotermia (41.5 %). El 30 % de los pacientes falleció precozmente. El árbol de decisión tuvo una sensibilidad de 82.3 %, una especificidad de 97.2 % y un porcentaje global de pronóstico correcto del 92.8 %. Se identificaron 4 variables predictores de mortalidad: hipotermia, acidosis metabólica, coagulopatía aguda y trauma penetrante. Conclusiones: La probabilidad más alta de fallecer precozmente durante un trauma complejo hemorrágico se da entre pacientes con hipotermia, acidosis metabólica, coagulopatía aguda y trauma penetrante.

ABSTRACT Background: Complex trauma is a worldwide health problem and when hemorrhagic, mortality is higher than other types of complex trauma. Objective: To determine predictive variables of early mortality in hospitalized patients with complex hemorrhagic trauma in a second care level hospital in Cuba. Methodology: A cross-sectional study was conducted at Camilo Cienfuegos Provincial General Hospital in Sancti Spíritus, for 6 years. 207 patients were included. The variables were grouped into sociodemographic, associated chronic diseases, injury mechanism, type of trauma, topographic location, time between hospital admission, diagnosis and treatment, early complications, medical and surgical treatment, and early mortality. A decision tree was developed using the exhaustive Chaid method, the dependent variable was mortality due to complex hemorrhagic trauma. Results: Male patients (85 %), 60 years and younger (83 %), with blunt trauma (57.5 %) and polytraumatized patients (42.5 %) predominated. Those who presented metabolic acidosis (66.7 %), acute coagulopathy (44.4 %), and hypothermia (41.5 %) also predominated. 30 % of patients died early. The decision tree had a sensitivity of 82.3 %, a specificity of 97.2 % and an overall percentage of correct forecast of 92.8 %. Four variables that predicted mortality were identified: hypothermia, metabolic acidosis, acute coagulopathy, and penetrating trauma. Conclusions: The highest probability of early dying during a complex hemorrhagic trauma occurs among patients with hypothermia, metabolic acidosis, acute coagulopathy and penetrating trauma.

Evolution of damage control surgery in non-traumatic abdominal pathology: a light in the darkness.

Damage control surgery is based on temporal control of the injury, physiologic recovery and posterior deferred definitive management. This strategy began in the 1980s and became a formal concept in 1993. It has proven to be a strategy that reduces mortality in severely injured trauma patients. Nevertheless, the concept of damage control in non-traumatic abdominal pathology remains controversial. This article aims to gather historical experiences in damage control surgery performed in non-traumatic abdominal emergency pathology patients and present a novel management algorithm. This strategy could be a surgical option to treat hemodynamically unstable patients in catastrophic scenarios such as hemorrhagic and septic shock caused by peritonitis, pancreatitis, acute mesenteric ischemia, among others. Therefore, damage control surgery is light amid better short- and long-term results.

La cirugía de control de daños es una estrategia de control temporal del daño tisular y recuperación fisiológica para un manejo definitivo diferido. Esta estrategia tiene antecedentes en el mundo del trauma desde la década de 1980, hasta su formalización conceptual en 1993. Hasta el momento ha demostrado ser una estrategia factible y que reduce la mortalidad en los pacientes críticamente enfermos. Sin embargo, el manejo de patologías abdominales no traumáticas aun es tema de discusión sobre su factibilidad y seguridad. El presente articulo tiene como objetivo realizar un relato histórico y experiencias en la aplicación de la cirugía de control de daños en emergencias quirúrgicas abdominales no asociadas a trauma y presentar un algoritmo de manejo usando los principios de la cirugía de control de daños. La aplicabilidad del control de daños en no trauma se enfrenta a los contextos de shock hemorrágico y séptico para patologías como peritonitis generalizada, peritonitis postquirúrgica, pancreatitis, isquemia mesentérica aguda, entre otras. Se ha demostrado que el uso de control de daños representa una luz para el cirujano ante la tormenta de la incertidumbre de la descompensación metabólica en el manejo de emergencias abdominales, para crear un puente para su manejo definitivo y permitir anastomosis como estrategia de reconstrucción intestinal y mejorar los resultados a corto y largo plazo.

Evolution of damage control surgery in non-traumatic abdominal pathology: a light in the darkness / Evolución de la cirugía de control de daños en patología no traumática abdominal: un faro en medio de la tormenta

Abstract Damage control surgery is based on temporal control of the injury, physiologic recovery and posterior deferred definitive management. This strategy began in the 1980s and became a formal concept in 1993. It has proven to be a strategy that reduces mortality in severely injured trauma patients. Nevertheless, the concept of damage control in non-traumatic abdominal pathology remains controversial. This article aims to gather historical experiences in damage control surgery performed in non-traumatic abdominal emergency pathology patients and present a novel management algorithm. This strategy could be a surgical option to treat hemodynamically unstable patients in catastrophic scenarios such as hemorrhagic and septic shock caused by peritonitis, pancreatitis, acute mesenteric ischemia, among others. Therefore, damage control surgery is light amid better short- and long-term results.

Resumen La cirugía de control de daños es una estrategia de control temporal del daño tisular y recuperación fisiológica para un manejo definitivo diferido. Esta estrategia tiene antecedentes en el mundo del trauma desde la década de 1980, hasta su formalización conceptual en 1993. Hasta el momento ha demostrado ser una estrategia factible y que reduce la mortalidad en los pacientes críticamente enfermos. Sin embargo, el manejo de patologías abdominales no traumáticas aun es tema de discusión sobre su factibilidad y seguridad. El presente articulo tiene como objetivo realizar un relato histórico y experiencias en la aplicación de la cirugía de control de daños en emergencias quirúrgicas abdominales no asociadas a trauma y presentar un algoritmo de manejo usando los principios de la cirugía de control de daños. La aplicabilidad del control de daños en no trauma se enfrenta a los contextos de shock hemorrágico y séptico para patologías como peritonitis generalizada, peritonitis postquirúrgica, pancreatitis, isquemia mesentérica aguda, entre otras. Se ha demostrado que el uso de control de daños representa una luz para el cirujano ante la tormenta de la incertidumbre de la descompensación metabólica en el manejo de emergencias abdominales, para crear un puente para su manejo definitivo y permitir anastomosis como estrategia de reconstrucción intestinal y mejorar los resultados a corto y largo plazo.

Tourniquet use for civilian extremity hemorrhage: systematic review of the literature / Uso de torniquete nas hemorragias de extremidades na população civil: revisão sistemática da literatura

ABSTRACT Introduction: extremity tourniquet (TQ) use has increased in the civilian setting; the beneficial results observed in the military has influenced acceptance by EMS and bystanders. This review aimed to analyze extremity TQ types used in the civilian setting, injury site, indications, and complications. Methods: a systematic review was conducted based on original articles published in PubMed, Embase, and Cochrane following PRISMA guidelines from 2010 to 2019. Data extraction focused on extremity TQ use for hemorrhage control in the civilian setting, demographic data, study type and duration, mechanism of injury, indications for use, injury site, TQ type, TQ time, and complications. Results: of the 1384 articles identified, 14 were selected for review with a total of 3912 civilian victims with extremity hemorrhage and 3522 extremity TQ placements analyzed. The majority of TQs were applied to male (79%) patients, with blunt or penetrating trauma. Among the indications for TQ use were hemorrhagic shock, suspicion of vascular injuries, continued bleeding, and partial or complete traumatic amputations. Upper extremity application was the most common TQ application site (56%), nearly all applied to a single extremity (99%), and only 0,6% required both upper and lower extremity applications. 80% of the applied TQs were commercial devices, and 20% improvised. Conclusions: TQ use in the civilian setting is associated with trauma-related injuries. Most are single-site TQs applied for the most part to male adults with upper extremity injury. Commercial TQs are more commonly employed, time in an urban setting is under 1 hour, with few complications described.

RESUMO Introdução: o uso de torniquete em extremidades (TQ) aumentou no ambiente civil; os resultados benéficos observados nas forças armadas influenciaram a aceitação por equipes de pré-hospitalar (PH) assim como pela população leiga. Esta revisão teve como objetivo analisar os tipos de TQ de extremidades usados em ambiente civil, local da lesão, indicações e complicações. Métodos: revisão sistemática foi conduzida com base em artigos originais publicados no PubMed, Embase e Cochrane seguindo as diretrizes do PRISMA de 2010 a 2019. Extração de dados focada no uso de TQ de extremidade para controle de hemorragia em ambiente civil, dados demográficos, tipo de estudo e duração, mecanismo de lesão, indicações de uso, local da lesão, tipo de TQ, tempo de TQ e complicações. Resultados: dos 1.384 artigos identificados, 14 foram selecionados para revisão com total de 3.912 vítimas civis com hemorragia nas extremidades e 3.522 colocações de extremidades TQ analisadas. A maioria foi aplicado em pacientes do sexo masculino (79%), com trauma contuso ou penetrante. Entre as indicações estavam choque hemorrágico, suspeita de lesões vasculares, sangramento contínuo e amputações traumáticas parciais ou completas. A aplicação na extremidade superior foi o local de aplicação mais comum (56%), quase todos aplicados a uma única extremidade (99%), e apenas 0,6% requereram aplicações nas extremidades superior e inferior. 80% dos TQs aplicados eram dispositivos comerciais e 20% improvisados. Conclusões: o uso de TQ em ambientes civis está associado a traumas. Os TQs comerciais são mais utilizados, com tempo menor que uma hora de uso e poucas complicações.

Shen-fu injection alleviates acute renal injury by reducing cytokine levels and modulating apoptosis in a porcine hemorrhagic shock model

ABSTRACT Purpose Shen-fu injection (SFI) was used to intervene in the resuscitation of porcine hemorrhagic shock (HS) model to study its protective effects on acute kidney injury. Methods After 60 min of HS, 28 animals were randomly assigned into four groups. The groups were as follows: hemorrhagic shock group (HS); HS resuscitation with shed-blood group (HSR); HS resuscitation with shed-blood and SFI (1 mL·kg-1) group (HSR-SFI); and the sham operation group (Sham). The bloods were analyzed for serum creatinine (sCr), cystatin C (CysC) and neutrophil gelatinase-associated lipocalin (NGAL). BAX, Bcl-2, and caspase-3 protein expressions by Western blot analysis and immunohistochemical staining. The renal tissues were removed and pathologic changes were observed. Results Mean aortic pressure (MAP) in HSR-SFI groups were higher than that in HSR groups after shock. At the 6th hour after shock, the urine volume per hour in the HSR-SFI groups was more than that in the HSR groups. The sCr, NGAL, CysC and cytokine levels of HSR-SFI groups were lower. The Bcl-2 expression was increased in the HSR-SFI groups. The BAX and caspase-3 expressions were reduced. The histopathologic score in the HSR-SFI was lower. Conclusions SFI may reduce the risk of acute kidney injury (AKI) following hemorrhagic shock by attenuating systemic inflammatory responses, and regulating the expression of apoptosis-related proteins.

O uso potencial do Balão de Oclusão Endovascular da Aorta para Ressuscitação em um hospital brasileiro / The potential use of Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) in a Brazilian hospital

RESUMO Objetivo: Este estudo objetivou analisar o uso potencial Balão de Oclusão Endovascular da Aorta para Ressuscitação (REBOA) em um hospital brasileiro. Métodos: Foi realizada uma revisão da literatura e uma análise retrospectiva de todas as avaliações cirúrgicas de emergência para pacientes com suspeita de hemorragia maciça internados em um hospital brasileiro, de 1 de abril de 2017 a 31 de março de 2018. Os critérios de elegibilidade do REBOA foram: origem abdominal e/ou pélvica, choque hemorrágico e acima de 18 anos de idade. Os critérios de exclusão foram: acima de 70 anos e doença terminal pré-existente ou comorbidades significativas. Resultados: No período, foram solicitadas 90 avaliações. Em 14 ocasiões (15,6%) havia indicação para o uso do REBOA. Os casos em que isso foi possível foram devidos a causas ginecológicas/obstétricas em 11 casos (78,6%) e cirurgia oncológica eletiva em três casos (21,4%). Conclusões: O REBOA é ainda pouco utilizado em nosso país, mas pode ser uma ferramenta de extrema importância, e talvez o último recurso em pacientes extremamente graves, até que o tratamento definitivo, cirúrgico, endovascular ou endoscópico seja efetuado.

ABSTRACT Aim: To evaluate the potential use of REBOA in a Brazilian hospital. Methods: We performed a retrospective analysis of all requests for emergency surgical evaluation for patients with suspected massive hemorrhage, hospitalized in a private Brazilian general hospital, from April 1, 2017 to March 31, 2018. Inclusion criteria for REBOA eligibility were: suspected abdominal and/or pelvic bleeding, hemorrhagic shock and older than 18 years of age. Exclusion criteria were: older than 70 years of age, and pre-existing terminal disease or significant comorbidities. Results: 90 evaluations were requested during the study period. However, according to our inclusion/exclusion criteria, only on 14 occasions (15.6%) there was a recommendation for the use of REBOA. Gynecological/obstetric conditions were the indication in 11 cases (78.6%) and elective oncologic surgery in three cases (21.4%). Conclusions: The use of REBOA is not common in our country, but it can be an essential tool, and perhaps the last resource in extremely severe conditions until the definitive surgical, endovascular or endoscopic treatment is performed.

Bleeding management after implementation of the Hemorrhage Code (Code H) at the Hospital Israelita Albert Einstein, São Paulo, Brazil / Manejo de sangramento após implantação do Código Hemorrágico (Código H) no Hospital Israelita Albert Einstein, São Paulo, Brasil

ABSTRACT Objective To describe the implementation of a care protocol based on rapid response teams, for management and resolution of bleeding. Methods A hospital protocol called Hemorrhage Code (Code H) was devised and developed. In a flow line, a multidisciplinary team provides comprehensive, fast and effective care to the patient with a severe hemorrhagic condition. In another flow line, professionals based at the hospital pharmacy focus on identifying patients at risk of bleeding, to avoid this event. Several hospital professionals and sectors were trained, each with specific roles, ensuring full support to the medical and nursing staffs. Results After implementing this protocol, we were able to significantly reduce the number of catastrophic events related to failure in bleeding management. Conclusion Code H is an example of a value-based medicine and precision medicine project by delivering comprehensive and multidisciplinary care, in addition to point-of-care testing introduced in clinical practice, optimizing patient safety and care practices at the hospital. Furthermore, it will be possible to minimize the risk of lawsuits for the hospital and physicians, as well as rationalizing resources with benefits for administrators and payers.

RESUMO Objetivo Descrever a implantação de um protocolo de atendimento nos moldes de times de resposta rápida, para manejo e resolução do sangramento. Métodos Foi idealizado e desenvolvido um protocolo institucional, chamado Código Hemorrágico, ou Código H, no qual, em um fluxo, um time multiprofissional e multidisciplinar foi constituído para atendimento integral, rápido e eficaz do paciente com doença hemorrágica grave. Em um outro fluxo, os profissionais, centralizados na farmácia do hospital, focavam na identificação do paciente com risco de hemorragia, no sentido de evitar o evento. Vários profissionais e setores do hospital foram treinados, e cada um, com funções específicas, deveria oferecer garantia total de apoio e suporte às equipes médica e de enfermagem. Resultados Após a implementação do protocolo, o número de eventos catastróficos relacionados à falha no manejo do sangramento reduziu significativamente. Conclusão O Código H é um exemplo de projeto de medicina baseada em valor e de medicina de precisão, por meio de atendimento integral e multidisciplinar, além de testes point of care introduzidos na prática clínica, com otimização da segurança do paciente e da prática assistencial na instituição. Ainda, por meio dele, deve ser possível minimizar o risco de ações judiciais para o hospital e os médicos, além de racionalizar recursos, com benefícios para administradores e fontes pagadoras.

Tomografia no trauma abdominal grave: risco justificável? / Computerized Axial Tomography in patients with severe abdominal trauma: is it a justifiable risk?

RESUMO Objetivo: avaliar a evolução de pacientes vítimas de trauma abdominal grave, nos quais o protocolo de transfusão maciça foi acionado, e que foram submetidos à Tomografia Axial Computadorizada (TAC) no Pronto Socorro (PS), com o intuito de verificar o prognóstico do paciente e a eficiência diagnóstica da TAC nesse cenário. Métodos: estudo retrospectivo, longitudinal e observacional, feito em centro de referência para trauma. Foram selecionados 60 pacientes vítimas de trauma abdominal grave que ativaram o protocolo de transfusão maciça, divididos em dois grupos: os submetidos à TAC no PS e os que não foram. Verificou-se a acurácia da TAC, comparou-se o número de óbitos nos dois grupos, o tempo de internamento e os hemocomponentes transfundidos. Resultados: dos 60 pacientes, 66,67% receberam concentrados de hemácias ainda no PS; 33,3% foram submetidos à TAC na admissão, pela melhora hemodinâmica, e 66,7% não realizaram o exame na entrada. O percentual de óbitos foi de 35% em ambos os grupos. A diferença entre as médias do tempo de internamento entre os grupos não foi estatisticamente significativa, assim como a média da quantidade de concentrado de hemácias transfundido. No grupo que fez TAC, 45% não necessitaram de laparotomia exploratória. Conclusão: a TAC pôde ser realizada de maneira rápida em pacientes com instabilidade hemodinâmica na chegada ao PS, não influenciou significativamente a mortalidade e poupou alguns doentes de uma laparotomia exploratória desnecessária.

ABSTRACT Objective: to evaluate the evolution of severe abdominal trauma patients, for whom the massive transfusion protocol was triggered, and who were submitted to Computed Axial Tomography (CAT) in the emergency room (ER), in order to verify the patient's prognosis and the diagnostic efficiency of CAT in this scenario. Methods: retrospective, longitudinal and observational study performed at a referral center for trauma care in Curitiba, Parana, Brazil. We selected 60 severe abdominal trauma patients who had massive transfusion protocol activation and divided them into two groups: patients who underwent CAT at ER and patients who did not. We verified the diagnostic accuracy of CAT-scan examination and compared the number of deaths, hospitalization time, and transfused blood components in both groups. Results: considering the 60 patients, 66.67% received red blood cells at ER; 33.3% underwent CAT on admission due to hemodynamic improvement, and 66.7% did not perform the examination at the entrance. The percentage of deaths was 35% in both groups. Considering the two groups, the difference between the mean lengths of hospital stay was not statistically significant, as well as the difference between the mean numbers of transfused red blood cells. In the group that underwent CAT, 45% did not require exploratory laparotomy. Conclusion: CAT could be rapidly performed in patients with hemodynamic instability on arrival at ER, sparing some patients from an unnecessary exploratory laparotomy and not significantly influencing mortality.

Spontaneous rupture of right gastroepiploic artery aneurysm: a rare cause of hemorrhagic shock. case report

ABSTRACT CONTEXT: Aneurysms of the gastroepiploic arteries are seen only rarely. They are usually diagnosed during autopsy or laparotomy in patients with hemodynamic instability. Although the operation to treat this condition is relatively easy, delay in making the diagnosis affects the course of the disease. Case Report: A 57-year-old woman was admitted to the emergency department with abdominal pain and unconsciousness. A computed tomography scan showed extravasation of contrast agent at the headcorpus junction of the pancreas, and the patient underwent exploratory laparotomy under general anesthesia. During laparotomy, aneurysmatic rupture of the right gastroepiploic artery was detected. Control over bleeding was achieved by ligating the right gastroepiploic artery at its origin. The aneurysm was also resected and sent for pathological examination. CONCLUSION: Especially in cases of unidentified shock, splanchnic artery aneurysms should be kept in mind. Moreover, in the light of the data in the literature, the possibility of death should be taken into account seriously and, if feasible, prophylactic aneurysmectomy should be performed.

Resuscitative endovascular balloon occlusion of the aorta (REBOA): an updated review / Oclusão ressuscitativa por meio de balão endovascular da aorta (REBOA): revisão atualizada

ABSTRACT In a current scenario where trauma injury and its consequences account for 9% of the worlds causes of death, the management of non-compressible torso hemorrhage can be problematic. With the improvement of medicine, the approach of these patients must be accurate and immediate so that the consequences may be minimal. Therefore, aiming the ideal method, studies have led to the development of Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA). This procedure has been used at select trauma centers as a resuscitative adjunct for trauma patients with non-compressible torso hemorrhage. Although the use of this technique is increasing, its effectiveness is still not clear. This article aims, through a detailed review, to inform an updated view about this procedure, its technique, variations, benefits, limitations and future.

RESUMO Em um cenário atual onde a lesão traumática e suas consequências representam 9% das causas de morte no mundo, o manejo da hemorragia não compressível do tronco pode ser problemático. Com a melhoria da medicina, a abordagem desses pacientes deve ser precisa e imediata, para que as consequências possam ser mínimas. Portanto, visando o método ideal de manejo, estudos levaram ao desenvolvimento da técnica de oclusão ressuscitativa por balão endovascular da aorta (Resuscitative Endovascular Balloon Occlusion of the Aorta - REBOA). Este procedimento foi utilizado em centros de trauma selecionados como um complemento durante a reanimação para pacientes vítimas de trauma com hemorragia não compressível do tronco. Embora o uso dessa técnica esteja aumentando, sua eficácia ainda não é clara. Este artigo objetiva, por meio de uma revisão detalhada, trazer uma visão atualizada sobre este procedimento, sua técnica, variações, benefícios, limitações e futuro.

A fatal and metabolic experimental hemorrhagic shock in immature swine

Abstract Purpose: To use blood lactate (BL) as an end-point metabolic marker for the begin resuscitation of volume replacement in experimental hemorrhagic shock. Methods: Group I (n=7) was not bled (Control). Animals in Group II (n=7) were bled to a MAP of 30mmHg in thirty minutes. Hemodynamic and metabolic data were recorded at Baseline, at 30, 60 and 120 minutes after Baseline. The animals were intubated in spontaneous breathing (FIO2=0.21) with halothane. Results: Group I all survived. In Group II all died; no mortality occurred before a BL<10mM/L. Beyond the end-point all animals exhibited severe acidemia, hyperventilation and clinical signs of shock. Without treatment all animals died within 70.43±24.51 min of hypotension shortly after reaching an average level of BL 17.01±3.20mM/L. Conclusions: Swine's breathing room air spontaneously in hemorrhagic shock not treated a blood lactate over 10mM/L results fatal. The predictable outcome of this shock model is expected to produce consistent information based on possible different metabolic and hemodynamic patterns as far as the type of fluid and the timing of resuscitation in near fatal hemorrhagic shock.

Fibrinógeno y hemorragia posparto - ¿Asociación o causalidad? / Fibrinogn and postpartum hemorrhage - Association or causality?

Postpartum hemorrhage (PPH) is the leading cause of maternal death worldwide, accounting for one in four maternal deaths. Despite efforts in public health policy, the incidence of massive PPH has increased in recent years even in first world countries. In Colombia, PPH is the second leading cause of maternal death. Multiple observational studies have provided evidence about the association between the concentration levels of fibrinogen in blood plasma and the severity of PPH, proposing the systematic use of fibrinogen concentrates as a prophylactic or therapeutic measure in patients with obstetric hemorrhage. However, the statistical relationship demonstrated in such studies should not necessarily be interpreted as a cause-effect relationship. Traditionally, we have used the criteria postulated by Sir Arthur Bradford Hill to establish a causal relationship. Therefore, the most pragmatic way to evaluate a possible causal relationship is through a randomized placebo-controlled experiment. Experiments of this kind available to date have methodological deficiencies or have been criticized for internal validity. As a result, the statistical relationship (association) between low levels of fibrinogen and PPH cannot be certainly interpreted as a cause-effect relationship and the use of fibrinogen concentrates may only be justified in the context of new clinical trials.

La hemorragia posparto (HPP) es la primera causa de muerte materna en el mundo, siendo responsable de una de cuatro muertes maternas. A pesar de los esfuerzos en políticas de salud pública, la incidencia de la HPP masiva ha aumentado en los últimos años incluso en países del primer mundo. En Colombia, la HPP es la segunda causa de muerte materna. Múltiples estudios observacionales han proporcionado evidencia sobre la asociación entre la concentración plasmática de fibrinógeno y la severidad de la HPP, por lo que se ha planteado el uso sistemático de concentrados de fibrinógeno como medida profiláctica o terapéutica en pacientes con hemorragia obstétrica. Sin embargo, la relación estadística demostrada en este tipo de estudios no necesariamente se debe interpretar como una relación causa-efecto. Tradicionalmente, se han usado los criterios postulados por Sir Arthur Bradford Hill para establecer una relación causal, a la luz de los cuales la manera más pragmática para evaluar una eventual relación causal sea a través de un experimento aleatorizado controlado con placebo. Los experimentos de esto tipo disponibles a la fecha poseen deficiencias metodológicas o se ha criticado su validez interna. Por lo pronto, la relación estadística (asociación) entre los niveles bajos de fibrinógeno y la HPP no se puede interpretar como una certeza de relación causa-efecto y el uso de concentrados de fibrinógeno solo estará justificado en el contexto de nuevos experimentos clínicos.

Post-hemorrhagic shock mesenteric lymph is an important contributor to cardiac dysfunction following hemorrhagic shock

PURPOSE:To evaluate whether post-hemorrhagic shock mesenteric lymph (PSML) is involved in cardiac dysfunction induced by hemorrhagic shock.METHODS: The hemorrhagic shock model (40±2 mmHg, 3h) was established in rats of the shock and shock+drainage groups; and PSML drainage was performed from hypotension 1-3h in the shock+drainage rats. Then, the isolated hearts were obtained from the rats for the examination of cardiac function with Langendorff system. Subsequently, the isolated hearts were obtained from normal rats and perfused with PSML or Krebs-Henseleit solution, and the changes of cardiac function were observed.RESULTS:The left ventricular systolic pressure (LVSP) and the maximal rates of LV developed pressure (LVDP) rise and fall (±dP/dtmax) in the shock and shock+drainage groups were lower than that of the sham group; otherwise, these indices in the shock+drainage group were higher compared to the shock group. In addition, after isolated hearts obtained from normal rats perfusing with PSML, these cardiac function indices were gradual decline along with the extension of time, such as heart rate, LVSP, ±dP/dtmax, etc.CONCLUSION:Post-hemorrhagic shock mesenteric lymph is an important contributor to cardiac dysfunction following hemorrhagic shock.(AU)

Post-hemorrhagic shock mesenteric lymph is an important contributor to cardiac dysfunction following hemorrhagic shock

PURPOSE: To evaluate whether post-hemorrhagic shock mesenteric lymph (PSML) is involved in cardiac dysfunction induced by hemorrhagic shock. METHODS: The hemorrhagic shock model (40±2 mmHg, 3h) was established in rats of the shock and shock+drainage groups; and PSML drainage was performed from hypotension 1-3h in the shock+drainage rats. Then, the isolated hearts were obtained from the rats for the examination of cardiac function with Langendorff system. Subsequently, the isolated hearts were obtained from normal rats and perfused with PSML or Krebs-Henseleit solution, and the changes of cardiac function were observed. RESULTS: The left ventricular systolic pressure (LVSP) and the maximal rates of LV developed pressure (LVDP) rise and fall (±dP/dt max) in the shock and shock+drainage groups were lower than that of the sham group; otherwise, these indices in the shock+drainage group were higher compared to the shock group. In addition, after isolated hearts obtained from normal rats perfusing with PSML, these cardiac function indices were gradual decline along with the extension of time, such as heart rate, LVSP, ±dP/dt max, etc. CONCLUSION: Post-hemorrhagic shock mesenteric lymph is an important contributor to cardiac dysfunction following hemorrhagic shock. .

Effect of N-acetylcysteine in hearts of rats submitted to controlled hemorrhagic shock / Efeito da N-acetilcisteína em corações de ratos submetidos ao choque hemorrágico controlado

Abstract Introduction: Pharmacological therapy is a strategy for the prevention of complications associated with ischemia and reperfusion injury that occurs after volume replacement in the treatment of hemorrhagic shock. Objective: The aim of this study was to evaluate the effect of N-acetylcysteine associated with fluid resuscitation in cardiac injury in a rat hemorrhagic shock model. Methods: Mice Wister male rats were randomly and subjected to controlled hemorrhagic shock for 60 min. and then, subjected to resuscitation with Ringer lactate. In a group of six animals, 150mg/kg of N-acetylcysteine were added to fluid volume replacement. The animals were observed for 120 min and after this period, were euthanized and cardiac tissue was collected for histopathological analysis and measurement of thiobarbituric acid reactive substances and pro-and anti-inflammatory interleukin. Results: Cardiac tissue of the group treated with N-acetylcysteine showed lower concentrations of thiobarbituric acid reactive substances (0.20±0.05 vs. 0.27±0.05, P=0.014) and reduced histopathological damage and edema when compared to the group whose volume replacement occurred only with Ringer lactate. There was no difference in the expression of cytokines interleukin 6 (2,138.29±316.89 vs. 1,870.16±303.68, P=0.091) and interleukin 10 (1.019,83±262,50 vs. 848.60±106.5, P=0.169) between the treated groups. Conclusion: The association of N-acetylcysteine on volume replacement attenuates oxidative stress in the heart, as well myocardial damage and edema, but does not modify the expression of inflammatory cytokines. .

Resumo Introdução: A terapia farmacológica é uma estratégia de prevenção das complicações associadas à lesão de isquemia e reperfusão tecidual que ocorre após a reposição volêmica no tratamento do choque hemorrágico. Objetivo: O objetivo deste estudo foi avaliar a repercussão da N-acetilcisteína associada à reposição volêmica na lesão cardíaca em modelo de choque hemorrágico em ratos. Métodos: Ratos Wistar, machos, foram randomizados e submetidos ao choque hemorrágico controlado por 60 minutos e, depois, submetidos à reposição volêmica com Ringer Lactato. Em um grupo de seis animais, foram adicionados 150 mg/Kg de N-acetilcisteína ao fluido de reposição volêmica. Os animais foram observados por 120 minutos e após este período foram submetidos à eutanásia e coleta do tecido cardíaco para análise histopatológica e dosagem de substâncias reativas ao ácido tiobarbitúrico e interleucinas pró e anti-inflamatórias. Resultados: Foi observada menor concentração de substâncias reativas ao ácido tiobarbitúrico (0,20±0,05 vs. 0,27±0,05, P=0,014) e menor dano histopatológico e edema no tecido cardíaco do grupo tratado com N-acetilcisteína em relação ao grupo cuja reposição volêmica ocorreu somente com Ringer Lactato. Não foi observada diferença da expressão das citocinas interleucina 6 (2.138,29±316,89 vs. 1.870,16±303,68, P=0,091) e interleucina 10 (1.019,83±262,50 vs. 848,60±106,5, P=0,169) entre os grupos tratados. Conclusão: A associação da N-acetilcisteína na reposição volêmica atenua o estresse oxidativo no coração, assim como dano e edema miocárdicos, porém, não modifica a expressão de citocinas inflamatórias. .

Otimização hemodinâmica em trauma grave: uma revisão sistemática e metanálise / Hemodynamic optimization in severe trauma: a systematic review and meta-analysis

Objetivo: O trauma grave pode associar-se a ocorrência de importante choque hemorrágico e ao comprometimento da perfusão dos órgãos. Formulamos a hipótese de que o tratamento direcionado por objetivo conferiria benefícios em termos de morbidade e mortalidade, em casos graves de trauma. Métodos: Realizamos uma busca sistemática nas bases de dados MedLine, Embase e Cochrane Controlled Clinical Trials Register com relação a pacientes vítimas de trauma grave. A mortalidade foi o desfecho primário dessa revisão. Os desfechos secundários incluíram taxas de complicações, duração da permanência no hospital e na unidade de terapia intensiva, e o volume de fluidos administrados. A metanálise foi realizada utilizando o programa de computador RevMan, e os dados apresentados são as odds ratios (OR) para desfechos dicotomizados e as diferenças médias e diferenças médias padrão para desfechos contínuos. Resultados: Foram analisados quatro estudos clínicos randomizados e controlados, que incluíram 419 pacientes. O risco de mortalidade foi significantemente reduzido nos pacientes com tratamento direcionado por objetivo, em comparação ao grupo controle (OR=0,56; IC95%: 0,34-0,92). A duração da permanência na unidade de terapia intensiva (DM: 3,7 dias; IC95%: 1,06-6,5) e no hospital (DM: 3,5 dias; IC95%: 2,75-4,25) foi significantemente mais curta ...

Objective: Severe trauma can be associated with significant hemorrhagic shock and impaired organ perfusion. We hypothesized that goal-directed therapy would confer morbidity and mortality benefits in major trauma. Methods: The MedLine, Embase and Cochrane Controlled Clinical Trials Register databases were systematically searched for randomized, controlled trials of goal-directed therapy in severe trauma patients. Mortality was the primary outcome of this review. Secondary outcomes included complication rates, length of hospital and intensive care unit stay, and the volume of fluid and blood administered. Meta-analysis was performed using RevMan software, and the data presented are as odds ratios for dichotomous outcomes and as mean differences (MDs) and standard MDs for continuous outcomes. Results: Four randomized, controlled trials including 419 patients were analyzed. Mortality risk was significantly reduced in goal-directed therapy-treated patients, compared to the control group (OR=0.56, 95%CI: 0.34-0.92). Intensive care (MD: 3.7 days 95%CI: 1.06-6.5) and hospital length of stay (MD: 3.5 days, 95%CI: 2.75-4.25) were significantly shorter in the protocol group patients. There were no differences in reported total fluid volume or blood transfusions administered. Heterogeneity in reporting among the studies prevented quantitative analysis of complications. Conclusion: Following severe trauma, early goal-directed therapy was associated with lower ...

Controle de danos: uma luz no fim do túnel / Damage control: a light at the end of the tunnel

O conceito "controle de danos" está estabelecido no manejo de pacientes gravemente traumatizados. Essa estratégia salva vidas ao adiar o reparo definitivo das lesões anatômicas e concentrar-se na restauração da fisiologia. O objetivo da laparotomia no controle de danos é interromper a hemorragia e a contaminação em pacientes, com choque hemorrágico grave, que estejam exaurindo suas reservas fisiológicas. A seguir, esses pacientes serão submetidos à ressuscitação e correção de coagulopatia, hipotermia e acidose no centro de tratamento intensivo, antes de retornarem à sala de cirurgia. Tal abordagem tem alcançado taxas de sobrevida melhor que o esperado para o trauma abdominal e sua aplicação tem sido estendida para incluir o trauma torácico e ortopédico.

The concept of "damage control" is established in the management of severely traumatized patients. This strategy saves lives in delaying definitive repair of anatomic lesions and focus on restoring physiology. The purpose of laparotomy in damage control is stopping bleeding and infection in patients with severe hemorrhagic shock who are exhausting their physiological reserves. Subsequently, these patients will be submitted to CPR and correction of coagulopathy, hypothermia, and acidosis in intensive treatment center before returning to the operating room. Such approach has achieved high survival rates, better than expected for abdominal trauma, and its application has been extended to include thoracic and orthopedic trauma.

Hipotensão permissiva no trauma / Permissive hypotension in trauma

O choque hemorrágico é uma das principais causas de mortes evitáveis no trauma.Os protocolos atuais de tratamento reconhecem a importância da abordagem precoce da coagulopatia relacionada ao trauma e que a infusão de grandes volumes de cristaloides são prejudiciais aos pacientes. O controle rápido do sangramento continua sendo a medida mais importante no tratamento do choque hemorrágico. Neste contexto, a hipotensão permissiva é uma estratégia cada vez mais utilizada na reanimação de pacientes com hemorragias traumáticas. Neste artigo realizamos uma revisão da literatura com uma análise crítica das indicações da hipotensão permissiva no trauma.

Hemorrhagic shock is one of the leading causes of preventable deaths in trauma cases. Current treatment protocols acknowledge the importance of the early approach of coagulopathy related to trauma and that the infusion of large volumes of crystalloids is harmful to patients. The quick bleeding control is still the most important measure in the treatment of hemorrhagic shock. Thus, the permissive hypotension is a strategy increasingly being used in the resuscitation of patients with traumatic bleeding. In this article, we conducted a literature review with a critical analysis of indications for permissive hypotension in trauma.

Transoperative refusion: a simple and safe method in emergency surgery / Reinfusão transoperatória: um método simples e seguro na cirurgia de emergência

The objective is to reinforce the importance of blood reinfusion as a cheap, safe and simple method, which can be used in small hospitals, especially those in which there is no blood bank. Moreover, even with the use of devices that perform the collection and filtration of blood, more recent studies show that the cost-benefit ratio is much better when autologous transfusion is compared with blood transfusions, even when there is injury to hollow viscera and blood contamination. It is known that the allogeneic blood transfusion carries a number of risks to patients, among them are the coagulation disorders mediated by excess enzymes in the conserved blood, and deficiency in clotting factors, mainly the Factor V, the proacelerin. Another factor would be the risk of contamination with still unknown pathogens or that are not investigated during screening for selection of donors, such as the West Nile Fever and Creutzfeldt-Jacob, better known as "Mad Cow" disease. Comparing both methods, we conclude that blood autotransfusion has numerous advantages over heterologous transfusion, even in large hospitals. We are not against blood transfusions, just do not agree that the patient's own blood is discarded without making sure there will be enough blood in stock to get him out of the hemorrhagic shock.

O objetivo deste trabalho é reforçar a importância da reinfusão sanguínea como um método barato, seguro e simples, e que pode ser utilizado em hospitais de pequeno porte, destacando aqueles que não dispõem de banco de sangue. Além disso, mesmo com a utilização de aparelhos que realizam a coleta e filtração do sangue, trabalhos mais recentes mostram que a relação custo-benefício é bem melhor, comparando a transfusão autóloga com a transfusão de hemoderivados, mesmo quando há lesão de vísceras ocas e contaminação do sangue. Sabe-se que, atualmente, a transfusão de sangue alogênico acarreta uma série de riscos aos pacientes, dentre eles, estão os distúrbios de coagulação mediados pelo excesso de enzimas no sangue, conservada e deficiência nos fatores de coagulação; destacando o Fator V, a proacelerina. Outro fator seria o risco de contaminação com patógenos ainda desconhecidos ou que não são investigados durante a triagem para seleção de doadores, como por exemplo, a Febre do Nilo Ocidental e a Doença de Creutzfeldt-Jacob, mais conhecida como Doença da "Vaca Louca". Comparando ambos os métodos, concluímos que a autotransfusão sanguínea possui inúmeras vantagens em relação à transfusão heteróloga, mesmo em hospitais de grande porte. Não somos contra a transfusão de hemoderivados, só não concordamos que seja desprezado o sangue do próprio paciente, sem termos certeza de que vai chegar sangue em quantidade suficiente para tirá-lo do choque hemorrágico.