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 / 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.

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.

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.

Discriminant analysis of the risk of nosocomial mortality in patients with traumatic hemorrhagic shock / 中华普通外科杂志

Objective:To investigate the use of discriminant analysis to predict the risk of nosocomial mortality in patients with traumatic hemorrhagic shock.Methods:The clinical data of 238 patients with traumatic hemorrhagic shock admitted to Peking University People's Hospital from Sep 2013 to Aug 2020 were retrospectively analyzed. Patients were divided into survival group (214 cases) and death group (24 cases). Stepwise discriminant analysis was used to establish a discriminant model.Results:The difference of history of stroke (9.8% vs. 25.0%), main site of bleeding (extremities)(58.9% vs. 29.2%), APACHEⅡ score (16.4±5.1 vs. 23.2±6.1), blood lactic acid [2.1(1.1-3.5) mmol/L vs. 4.9(2.0-13.4) mmol/L] and surgery (92.5% vs. 58.3%) between the two groups was all statistically significant (all P<0.05). Finally, There are five indicators that entered the discriminant model: history of stroke, main site of bleeding (extremities), blood lactic acid, APACHE Ⅱ score and surgery. The area under the ROC curve for predicting the risk of mortality in patients with traumatic hemorrhagic shock was 0.857, 95% CI 0.754-0.959. Conclusions:The established discriminant model has a high accuracy in predicting the risk of in-hospital mortality in patients with traumatic hemorrhagic shock.

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.

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.

Contrast-enhanced ultrasound in evaluation on renal cortex blood perfusion in rat models of hemorrhagic shock / 中国医学影像技术

Objective: Contrast-enhanced ultrasound (CEUS) was used to investigate the feasibility of CEUS for evaluation on renal cortex blood perfusion changes in rat models of different degrees hemorrhagic shock (HS). Methods: Twenty-four healthy male SD rats were randomly and equally divided into sham operation group (Sham group), mild hemorrhagic shock group (T1 group), moderate hemorrhagic shock group (T2 group) and severe hemorrhagic shock group (T3 group, each n=6). CEUS was performed after establishment of models to observe renal cortex blood perfusion, and analysis was performed on the time-intensity curve (TIC). Comparative parameters, including peak, time to peak (TTP), AUC and mean transition time (MTT) were analyzed. Venous blood was taken for renal biochemical examination after CEUS, and renal tissue was taken for pathological examination after the rats were killed. Results: TTP, AUC, MTT and urea nitrogen (Urea) in T1 group increased compared with those in Sham group (all P<0.05), but pathological changes were not obvious. TTP, MTT and creatinine (Crea) in T2 group increased than those in Sham group and T1 group (all P<0.05), AUC in T2 group increased than that in Sham group (P<0.05), and pathological changes in T2 group were more damaging compare with T1 group. TTP, AUC, MTT and Crea in T3 group increased than that in the other groups (all P<0.05), and peak in T3 group increased than that in Sham group and T1 group (both P<0.05). Urea in T3 group increased than that in Sham group (P<0.05), and pathological changes were significant. Significant positive correlations were found between TTP, AUC, MTT and Crea (r=0.789, 0.790, 0.800, all P<0.001). Conclusion: CEUS can quantitatively analyze renal cortex blood perfusion changes of rat models caused by hemorrhagic shock. TIC is useful for quantitative analysis, of which TTP, AUC and MTT can be used as sensitivity indexes.

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.

Effects of different hemoglobin concentrations on lung injury in a rabbit model of hemorrhagic shock and resuscitation / 中华麻醉学杂志

Objective@#To evaluate the effect of different hemoglobin (Hb) concentrations on the lung injury in a rabbit model of hemorrhagic shock and resuscitation (HS-R).@*Methods@#Fifty healthy male New Zealand rabbits, aged 2 months, weighing 1.9-2.4 kg, were divided into 5 groups (n=10 each) using a random number table method: control group (group C), HS-R group (group H), and three HS-R plus infusion of concentrated red blood cell groups group R1 (60 g/L≤Hb<80 g/L), group R2 (80 g/L≤Hb<100 g/L) and group R3 (100 g/L≤Hb<120 g/L). The animals were sacrificed at 3 h after resuscitation, lung tissues were obtained for examination of the pathological changes with a light microscope, and lung tissues were obtained again for determination of wet to dry weight ratio (W/D ratio), neutrophil myeloperoxidase (MPO), NO level and cell apoptosis (by TUNEL).@*Results@#Compared with group C, the levels of MAP and NO, W/D ratio and apoptosis index were significantly increased in the other groups (P<0.05). Compared with group H, the levels of MAP and NO, W/D ratio and apoptosis index were significantly decreased in R2 and R3 groups (P<0.05). Compared with group R2, the apoptosis index was significantly increased at T5(P<0.05), and no significant change was found in the other parameters in group R3 (P>0.05).@*Conclusion@#Maintaining Hb 80-100 g/L after HS-R reduces acute lung injury in rabbits.

Effect of pyruvate peritoneal resuscitation on JAK/STAT signaling pathway in intestinal tissues of rats with hemorrhagic shock / 中华麻醉学杂志

Objective To evaluate the effect of pyruvate peritoneal resuscitation on Janus kinase (JAK) /signal transducer and activator of transcription (STAT) signaling pathway in intestinal tissues of rats with hemorrhagic shock.Methods Twenty-four healthy male Sprague-Dawley rats,weighing 200-300 g,were divided into 3 groups (n=8 each) using a random number table method:sham operation group (S group),intravenous resuscitation group (VR group),and peritoneal resuscitation with pyruvate group (PY group).Hemorrhagic shock was induced by blood-letting and infusing blood withdrawn with mean arterial pressure reduced to 30-40 mmHg for 60 min in pentobarbital-anesthetized rats.Hemorrhagic shock was resuscitated with autologous blood and normal saline 2 times the volume of blood withdrawn at the end of hemorrhagic shock in group VR.Pyruvate was intraperitoneally infused for 30 min using a micro-perfusion pump simultaneously with the intravenous resuscitation in group PY.The animals were sacrificed at 2 h after resuscitation,and intestinal tissues were obtained for determination of malondialdehyde (MDA) content (by thiobarbituric acid method),superoxide dismutase (SOD) activity (using xanthine oxidase method),myeloperoxidase (MPO) activity (using chemical colorimetry),and expression of phosphorylated STAT3 (pSTAT3),phosphorylated JAK2 (p-JAK2) and caspase-3 expression (by Western blot).Results Compared with group S,the MDA content and MPO activity were significantly increased,the SOD activity was decreased,and the expression of p-STAT3,p-JAK2 and caspase-3 was up-regulated in the other two groups (P＜0.05).Compared with group VR,the MDA content and MPO activity were significantly decreased,the SOD activity was increased,and the expression of p-STAT3,p-JAK2 and caspase-3 was down-regulated in group PY (P＜0.05).Conclusion The mechanism by which peritoneal resuscitation with pyruvate mitigates intestinal damage may be related to inhibiting activation of JAK/STAT signaling pathway in the rats with hemorrhagic shock.

Effects of different hemoglobin concentrations on lung injury in a rabbit model of hemorrhagic shock and resuscitation / 中华麻醉学杂志

Objective To evaluate the effect of different hemoglobin(Hb)concentrations on the lung injury in a rabbit model of hemorrhagic shock and resuscitation(HS-R).Methods Fifty healthy male New Zealand rabbits,aged 2 months,weighing 1.9-2.4 kg,were divided into 5 groups(n＝10 each)u-sing a random number table method: control group(group C),HS-R group(group H),and three HS-R plus infusion of concentrated red blood cell groups group R1(60 g/L≤Hb＜80 g/L),group R2(80 g/L≤Hb＜100 g/L)and group R3(100 g/L≤Hb＜120 g/L).The animals were sacrificed at 3 h after resuscita-tion,lung tissues were obtained for examination of the pathological changes with a light microscope,and lung tissues were obtained again for determination of wet to dry weight ratio(W/D ratio),neutrophil my-eloperoxidase(MPO),NO level and cell apoptosis(by TUNEL).Results Compared with group C,the levels of MAP and NO,W/D ratio and apoptosis index were significantly increased in the other groups(P＜0.05).Compared with group H,the levels of MAP and NO,W/D ratio and apoptosis index were signifi-cantly decreased in R2 and R3 groups(P＜0.05).Compared with group R2,the apoptosis index was signif-icantly increased at T5(P＜0.05),and no significant change was found in the other parameters in group R3(P>0.05).Conclusion Maintaining Hb 80-100 g/L after HS-R reduces acute lung injury in rabbits.

Comparison of different concentrations of pyruvate-based peritoneal dialysis solution for peritoneal resuscitation in a rat model of hemorrhagic shock / 中华麻醉学杂志

Objective To compare the efficacy of different concentrations of pyruvate-based peritoneal dialysis solution for peritoneal resuscitation in a rat model of hemorrhagic shock.Methods Forty SPF healthy male Sprague-Dawley rats,weighing 200-250 g,were assigned to 4 groups (n=10 each) using a random number table method:sham operation group (S group),routine Ⅳ resuscitation group (VR group),and intraperitoneal resuscitation with different concentrations of pyruvate-based peritoneal dialysis solution groups (PY1 group,PY2 group).The animals were anesthetized with pentobarbital sodium 400 mg/kg.Hemorrhagic shock was induced by withdrawing blood from the left femoral artery until mean arterial pressure (MAP) was reduced to 30-40 mmHg and maintained for 60 min,and the animals were then resuscitated by infusion of shed blood.In VR group,hemorrhagic shock was resuscitated by retransfusion of autologous blood and with normal saline 2 times the volume of blood loss at 1 h after hemorrhagic shock.Routine Ⅳ resuscitation was performed,and 40 and 80 mmol/L peritoneal dialysis solution 20 ml were intraperitoneally infused for 30 min at the same time in PY1 and PY2 groups,respectively.MAP was recorded before blood-letting (T0),at 5,30 and 60 min of shock (T1-3) and 5,30,60,90 and 120 min after the end of resuscitation (T4-8).Blood samples were collected at T8 for blood gas analysis,and pH value,partial pressure of oxygen (PaO2),partial pressure of carbon dioxide (PaCO2),base excess (BE),and bicarbonate ion concentration (HCO3-) were recorded.Results Compared with S group,MAP was significantly decreased at T1-8 in VR and PY1 groups and at T1-7 in PY2 group,and pH value,PaO2,BE and HCO3-were significantly decreased,and PaCO2 was increased in VR group (P＜0.05).Compared with VR group,MAP at T4-8,pH value,PaO2,BE and HCO3-were significantly increased,and PaCO2 was decreased in PY1 and PY2 groups (P＜0.05).Compared with PY1 group,MAP at T6-8 and pH value were significantly increased (P＜0.05),and no significant change was found in PaO2,PaCO2,BE or HCO3-in PY2 group (P＞0.05).Conclusion Peritoneal resuscitation with 80 mmol/L pyruvate-based peritoneal dialysis solution produces better efficacy than 40 mmol/L in a rat model of hemorrhagic shock.

Research progress of application of whole blood in hemorrhagic shock resuscitation of combat casualties / 中华创伤杂志

Blood transfusion is an important resuscitation method for combat casualties with severe hemorrhagic shock.The optimal resuscitation plan directly influences the treatment effect of the wounded.Whole blood,once the main resuscitation fluid,was replaced by blood components for various reasons and became a supplement when there was insufficient blood components supply.With the latest evidence of whole blood application in combat casualties,the development of blood transfusion technology and the deepened clinical and basic research,we realize that the obstacles in the use of whole blood are not insurmountable and that whole blood has the advantages that blood components do not have in the treatment of combat casualties.Therefore,whole blood has once again become a research hotspot in the field of combat casualties treatment.This article reviews the development history,advantages and disadvantages of whole blood application in the resuscitation of hemorrhagic shock after combat casualties,with a view to provide reference for further clinical and basic research.

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.

Rhabdomyolysis caused by intractable postpartum hemorrhage: a case report / 中华围产医学杂志

We reported a case of rhabdomyolysis following hemorrhagic shock caused by intractable postpartum hemorrhage. During the resuscitation, the patient was clearly diagnosed with the following manifestations, including dark urine, oliguria, significantly increased creatine kinase and positive myoglobin in both serum and urine. Acute kidney injury occurred after emergent abdominal hysterectomy. The patient was fully recovered after active anti-shock management, including a successful resuscitation, aggressive hydration, urine alkalinization, diuresis, treatment on acidosis, hyperpotassemia and hypocalcemia.

Effect of resuscitation with Ringer′s malate solution on acute lung injury caused by hemorrhagic shock in rats / 中华麻醉学杂志

Objective To evaluate the effect of resuscitation with Ringer′s malate solution on acute lung injury caused by hemorrhagic shock in rats. Methods Forty-eight SPF healthy male Sprague-Dawley rats, aged 7-9 weeks, weighing 280-320 g, were assigned into 4 groups ( n＝12 each) using a random number table method: sham operation group (group S), normal saline group (group NS), Ringer′s lac-tate solution group ( group RL) and Ringer′s malate solution group ( group RM). In NS, RL and RM groups, the model of hemorrhagic shock was established, and rats were resuscitated after 60 min of hemor-rhagic shock. Rats were sacrificed at 3 h after resuscitation, and bronchial alveolar lavage fluid ( BALF) was collected to count neutrophils. Lung tissues were obtained for determination of the wet∕dry weight ratio (W∕D ratio), myeloperoxidase (MPO) activity, and contents of tumor necrosis factor-alpha (TNF-α), interleukin-1beta (IL-1β) and IL-6. Lung tissues were obtained for examination of the pathological changes. Results Compared with group S, the neutrophil count in BALF, W∕D ratio, MPO activity and contents of TNF-α, IL-1β and IL-6 were significantly increased in NS, RL and RM groups ( P＜0. 05). Compared with NS and RL groups, the neutrophil count in BALF, W∕D ratio, MPO activity and contents of TNF-α, IL-1β and IL-6 were significantly decreased in NS and RL groups (P＜0. 05). Conclusion The severity of acute lung injury is reduced when Ringer′s malate solution is used for resuscitation as compared with that when normal saline and Ringer′s lactate solution are used in a rat model of hemorrhagic shock.

Role of mitochondriai permeability transition pore in reduction of brain injury by sevoflurane post-conditioning in a rat model of hemorrhagic shock and resuscitation / 中华麻醉学杂志

Objective To evaluate the role of mitochondrial permeability transition pore (mPTP)in reduction of brain injury by sevoflurane postconditioning in a rat model of hemorrhagic shock and resuscitation (HSR).Methods Ninety pathogen-free healthy adult male Sprague-Dawley rats,weighing 300-350 g,were divided into 5 groups (n =18 each) using a random number table:sham operation group (group S),group HSR,sevoflurane postconditioning group (group SP),sevoflurane postconditioning plus atractyloside (ATR,a specific mPTP opener) group (group SP + ATR) and ATR group.Hemorrhagic shock was produced by withdrawing 40％ of the total blood volume from the right carotid artery over an interval of 30 min,and 1 h later the animals were resuscitated by infusion of the shed blood via the left jugular vein over 30 min.SP and SP+ATR groups were exposed to 2.4％ sevoflurane for 30 min starting from the onset of reinfusion.In ATR and SP+ATR groups,ATR 5 mg/kg was intravenously injected at 10 min before reinfusion.Six rats in each group were randomly sacrificed at 24 h after the end of autologous blood reinfusion,and the hippocampus was harvested for determination of the expression of Bcl-2 and Bax in hippocampal tissues (by Western blot) and degree of mPTP opening.At 72 h after the end of autologous blood reinfusion,the rest 6 rats in each group were selected and underwent Morris water maze test,and the cognitive function was evaluated.Results Compared with group S,the escape latency was significantly prolonged,the number of crossing the original platform and locomotor distance in the target quadrant were decreased,the expression of Bcl-2 was down-regulated,the expression of Bax was up-regulated,and the degree of mPTP opening was increased in group HSR (P＜0.05).Compared with group HSR,the escape latency was significantly shortened,the number of crossing the original platform and locomotor distance in the target quadrant were increased,the expression of Bcl-2 was up-regulated,the expression of Bax was down-regulated,and the degree of mPTP opening was decreased in group SP (P＜0.05),and no significant change was found in each parameter in ATR and SP+ATR groups (P＞0.05).Compared with group SP,the escape latency was significantly prolonged,the number of crossing the original platform and locomotor distance in the target quadrant were decreased,the expression of Bcl-2 was down-regulated,the expression of Bax was up-regulated,and the degree of mPTP opening was increased in group SP+ATR (P＜0.05).Conclusion The mechanism by which sevoflurane postconditioning ameliorates brain injury may be related to inhibiting mPTP opening in a rat model of HSR.