Hypertonic saline and pentoxifylline enhance survival, reducing apoptosis and oxidative stress in a rat model of strangulated closed loop small bowel obstruction

OBJECTIVES: Intestinal obstruction has a high mortality rate when therapeutic treatment is delayed. Resuscitation in intestinal obstruction requires a large volume of fluid, and fluid combinations have been studied. Therefore, we evaluated the effects of hypertonic saline solution (HS) with pentoxifylline (PTX) on apoptosis, oxidative stress and survival rate. METHODS: Wistar rats were subjected to intestinal obstruction and ischemia through a closed loop ligation of the terminal ileum and its vessels. After 24 hours, the necrotic bowel segment was resected, and the animals were randomized into four groups according to the following resuscitation strategies: Ringer's lactate solution (RL) (RL-32 ml/kg); RL+PTX (25 mg/kg); HS+PTX (HS, 7.5%, 4 ml/kg), and no resuscitation (IO-intestinal obstruction and ischemia). Euthanasia was performed 3 hours after resuscitation to obtain kidney and intestine samples. A malondialdehyde (MDA) assay was performed to evaluate oxidative stress, and histochemical analyses (terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling [TUNEL], Bcl-2 and Bax) were conducted to evaluate kidney apoptosis. Survival was analyzed with another series of animals that were observed for 15 days. RESULTS: PTX in combination with RL or HS reduced the MDA levels (nmol/mg of protein), as follows: kidney IO=0.42; RL=0.49; RL+PTX=0.31; HS+PTX=0.34 (p<0.05); intestine: IO=0.42; RL=0.48; RL+PTX=0.29; HS+PTX=0.26 (p<0.05). The number of labeled cells for TUNEL and Bax was lower in the HS+PTX group than in the other groups (p<0.05). The Bax/Bcl-2 ratio was lower in the HS+PTX group than in the other groups (p<0.05). The survival rate on the 15th day was higher in the HS+PTX group (77%) than in the RL+PTX group (11%). CONCLUSION: PTX in combination with HS enhanced survival and attenuated oxidative stress and apoptosis. However, when combined with RL, PTX did not reduce apoptosis or mortality.

Continuous peritoneal lavage with vacuum peritoneostomy: an experimental study

OBJECTIVE: Despite advances in diffuse peritonitis treatment protocols, some cases develop unfavorably. With the advent of vacuum therapy, the use of laparostomy to treat peritonitis has gained traction. Another treatment modality is continuous peritoneal lavage. However, maintaining this technique is difficult and has been associated with controversial results. We propose a new model of continuous peritoneal lavage that takes advantage of the features and benefits of vacuum laparostomy. METHOD: Pigs (Landrace and Large White) under general anesthesia were submitted to laparostomy through which a multiperforated tube was placed along each flank and exteriorized in the left and lower right quadrants. A vacuum dressing was applied, and intermittent negative pressure was maintained. Peritoneal dialysis solution (PDS) was then infused through the tubes for 36 hours. The stability of peritoneostomy with intermittent infusion of fluids, the system resistance to obstruction and leakage, water balance, hemodynamic and biochemical parameters were evaluated. Fluid disposition in the abdominal cavity was analyzed through CT. RESULTS: Even when negative pressure was not applied, the dressing maintained the integrity of the system, and there were no leaks or blockage of the catheters during the procedure. The aspirated volume by vacuum laparostomy was similar to the infused volume (9073.5±1496.35 mL versus 10165±235.73 mL, p=0.25), and there were no major changes in hemodynamic or biochemical analysis. According to CT images, 60 ml/kg PDS was sufficient to occupy all intra-abdominal spaces. CONCLUSION: Continuous peritoneal lavage with negative pressure proved to be technically possible and may be an option in the treatment of diffuse peritonitis.

Profile of the General Surgery resident: what are the changes in the 21 st Century? / Perfil do residente de Cirurgia Geral: quais as mudanças no Século XXI?

ABSTRACT Objective: to verify the profile of the General Surgery residents of the Clinics Hospital (HC) of the Faculty of Medicine of the University of São Paulo (FMUSP). Methods: we evaluated the residents approved in the public contest for the Medical Residency Program in General Surgery of HC-FMUSP in the years 2014, 2015 and 2016. We carried out the study by applying a questionnaire and gathering information from the Medical Residency Commission of the Institution. We analyzed data on identification, origin of the candidate, undergraduate school, surgical teaching received, reason for choosing Surgery, residency expectations, choice of future specialty and pretensions as to the end of medical residency. We also analyzed the result of the examination of access to specialties. Results: the mean age was 25.8 years; 74.3% of residents were male. The majority (84.4%) had attended public medical schools, 68% of which were not in the Southeast region; 85,2% of the residents were approved in the first contest. The specialty choice was present for 75.9% of individuals at the beginning of the residency program, but 49.5% changed their minds during training. Plastic Surgery, Urology and Digestive System Surgery were chosen by 61.5%. Sixty hours per week work were considered adequate by 83.3%; 27.3% favored direct access to the specialty. At the end of the specialty, 53.3% intended to continue in São Paulo, and 26.2%, to return to their State of origin. A strict-sense post-graduate course was intended by 68.3%. Conclusion: the current profile of the resident reveals a reduction in the demand for General Surgery, an earlier definition of the specialty, options for increasingly specific areas and an activity that offers a better quality of life.

RESUMO Objetivo: verificar o perfil dos residentes de Cirurgia Geral do Hospital das Clínicas (HC) da Faculdade de Medicina da Universidade de São Paulo (FMUSP). Métodos: foram avaliados os residentes aprovados no concurso do Programa de Residência Médica em Cirurgia Geral do HC-FMUSP nos anos de 2014, 2015 e 2016. O estudo foi realizado por meio de coleta de dados de questionário e informações obtidas da Comissão de Residência Médica da Instituição. Foram analisados: dados da identificação, origem do candidato, escola da graduação, ensino cirúrgico recebido, razão da escolha pela Cirurgia, expectativas na residência, escolha da especialidade futura e pretensões ao término da residência médica. Também foi analisado o resultado do exame de acesso às especialidades. Resultados: a média de idade foi de 25,8 anos, sendo 74,3% do sexo masculino. A maioria (84,4%) cursou a graduação em escolas públicas, sendo 68% no Sudeste; 85,2% dos residentes foram aprovados no primeiro concurso. A escolha da especialidade estava definida em 75,9% no início da residência, porém 49,5% mudaram ao longo do treinamento. Cirurgia Plástica, Urologia e Cirurgia do Aparelho Digestivo foram escolhidas por 61,5%. Consideraram adequadas as 60 horas semanais 83,3%. Eram favoráveis ao acesso direto à especialidade 27,3%. Ao término da especialidade, 53,3% pretendiam continuar em São Paulo e 26,2% retornar ao Estado de origem. A pós-graduação stricto sensu era pretendida por 68,3%. Conclusão: o perfil atual do residente revela redução na procura pela Cirurgia Geral, definição mais precoce da especialidade, opções por áreas cada vez mais específicas e uma atividade que ofereça melhor qualidade de vida.

Management of infected pancreatic necrosis: state of the art / Necrose pancreática com infecção: estado atual do tratamento

ABSTRACT Pancreatic necrosis occurs in 15% of acute pancreatitis. The presence of infection is the most important factor in the evolution of pancreatitis. The diagnosis of infection is still challenging. Mortality in infected necrosis is 20%; in the presence of organic dysfunction, mortality reaches 60%. In the last three decades, there has been a real revolution in the treatment of infected pancreatic necrosis. However, the challenges persist and there are many unsolved questions: antibiotic treatment alone, tomography-guided percutaneous drainage, endoscopic drainage, video-assisted extraperitoneal debridement, extraperitoneal access, open necrosectomy? A step up approach has been proposed, beginning with less invasive procedures and reserving the operative intervention for patients in which the previous procedure did not solve the problem definitively. Indication and timing of the intervention should be determined by the clinical course. Ideally, the intervention should be done only after the fourth week of evolution, when it is observed a better delimitation of necrosis. Treatment should be individualized. There is no procedure that should be the first and best option for all patients. The objective of this work is to critically review the current state of the art of the treatment of infected pancreatic necrosis.

RESUMO A necrose pancreática ocorre em 15% das pancreatites agudas. A presença de infecção é o fator mais importante na evolução da pancreatite. Confirmar o diagnóstico de infecção ainda é um desafio. A mortalidade na necrose infectada é de 30% e na vigência de disfunção orgânica, chega a 70%. Nas últimas décadas, ocorreu uma verdadeira revolução no tratamento da necrose pancreática infectada. Mesmo assim, persiste o desafio e há múltiplas questões ainda não resolvidas: tratamento exclusivo com antibiótico, drenagem percutânea guiada por tomografia, drenagem por via endoscópica, desbridamento extra-peritoneal vídeo-assistido, acesso extra-peritoneal, necrosectomia por via aberta? Foi proposto o tratamento por etapas, "step up approach", iniciando-se com as medidas menos invasivas e reservando-se a intervenção operatória para os casos em que o procedimento anterior não resolver definitivamente o problema. A indicação e o momento da intervenção devem ser determinados pela evolução clínica. O ideal é que a intervenção seja feita apenas depois da quarta semana de evolução, quando já existe melhor delimitação da necrose. O tratamento deve ser individualizado. Não existe um procedimento que deva ser o primeiro e a melhor opção para todos os doentes. O objetivo deste trabalho é fazer uma análise crítica do estado atual do tratamento da necrose pancreática infectada.

Pancreatic Necrosis and Gas in the Retroperitoneum: Treatment with Antibiotics Alone

OBJECTIVE: To present our experience in the management of patients with infected pancreatic necrosis without drainage. METHODS: The records of patients with pancreatic necrosis admitted to our facility from 2011 to 2015 were retrospectively reviewed. RESULTS: We identified 61 patients with pancreatic necrosis. Six patients with pancreatic necrosis and gas in the retroperitoneum were treated exclusively with clinical support without any type of drainage. Only 2 patients had an APACHE II score >8. The first computed tomography scan revealed the presence of gas in 5 patients. The Balthazar computed tomography severity index score was >9 in 5 of the 6 patients. All patients were treated with antibiotics for at least 3 weeks. Blood cultures were positive in only 2 patients. Parenteral nutrition was not used in these patients. The length of hospital stay exceeded three weeks for 5 patients; 3 patients had to be readmitted. A cholecystectomy was performed after necrosis was completely resolved; pancreatitis recurred in 2 patients before the operation. No patients died. CONCLUSIONS: In selected patients, infected pancreatic necrosis (gas in the retroperitoneum) can be treated without percutaneous drainage or any additional surgical intervention. Intervention procedures should be performed for patients who exhibit clinical and laboratory deterioration.

Unintentionally retained foreign bodies after surgical procedures. Analysis of 4547 cases / Retenção inadvertida de corpos estranhos após intervenções cirúrgicas. Análise de 4547 casos

Objective: this study aims to explore the experience of Brazilian surgeons on Unintentionally Retained Foreign Bodies (RFB) after surgical procedures. Methods: A questionnaire was sent to surgeons by electronic mail, between March and July 2012. The questions analyzed their experience with foreign bodies (FB), foreign bodies' types, clinical manifestations, diagnoses, risk factors and legal implications. Results: in the 2872 eligible questionnaires, 43% of the surgeons asserted that they had already left FB and 73% had removed FB in one or more occasions, totalizing 4547. Of these foreign bodies, 90% were textiles, 78% were discovered in the first year and 14% remained asymptomatic. Among doctors with less than five years after graduation, 36% had already left a FB. The most frequently surgical procedures mentioned were the elective (57%) and routine (85%) ones. Emergency (26%), lack of counting (25%) and inadequate conditions of work contributed (12.5%) to the occurrence. In 46% of the cases patients were alerted about the FB, and 26% of them sued the doctors or the institution. Conclusions: challenging medical situations, omission of security protocols and inadequate work conditions contributed to RFB. However, RFB occurs mostly in routine procedures such as cesarean or cholecystectomy, and at the beginning of the professional career, highlighting, particularly in poorest countries, the need for primary prevention. Textiles predominated causing clinical repercussions and they were diagnosed in the first postoperative months. Surgeons were sued in 11.3% of the RFB cases.

Objetivo: avaliar a experiência de cirurgiões brasileiros com a retenção inadvertida de corpos estranhos (RICE) após procedimentos cirúrgicos. Métodos : foi enviado por correio eletrônico um questionário para cirurgiões, de março a julho de 2012. As questões avaliavam a sua experiência com RICE, os tipos de corpos estranhos, suas manifestações clínicas, diagnósticos, fatores de risco e implicações jurídicas. Resultados : 2872 questionários foram analisados. Destes, 43% dos cirurgiões já teriam deixado algum corpo estranho (CE) e 73% removido um CE em uma ou mais ocasiões. De um total de 4547 CE, 90% eram têxteis, 78% foram descobertos dentro do primeiro ano, e 14% assintomáticos. No grupo dos médicos graduados há menos de cinco anos, 36% já havia deixado um CE. Os procedimentos operatórios mais relacionados eram eletivos (54%) e rotineiros (85%). Emergência (26%), ausência de contagem (25%) e condições inadequadas de trabalho também contribuíram com a ocorrência (12,5%). Em 46% dos casos os pacientes tomaram ciência da retenção e 26% deles processaram os médicos ou as instituições. Conclusão: s ituações médicas desafiadoras, omissão de protocolos de segurança e condições inadequadas de trabalho contribuíram com a RICE. Entretanto, as RICE ocorreram principalmente em operações de rotina, como cesarianas e colecistectomias, principalmente no início da carreira profissional, ressaltando, principalmente em países mais pobres, a necessidade de prevenção primária. Os têxteis predominaram, acarretando repercussões clínicas e sendo diagnosticados nos primeiros meses de pós-operatório. Os médicos foram processados em 11,3% dos casos de RICE.

Ischemic preconditioning modifies mortality and inflammatory response

PURPOSE: To evaluate the effect of ischemic preconditioning on mortality, inflammatory mediators and oxidative stress after intestinal ischemia and reperfusion. METHODS: Male Wistar rats were allocated according to the period of ischemia with or without ischemic preconditioning which consist on clamping the superior mesenteric artery for 10 minutes followed by reperfusion for 10 minutes before the sustained ischemia period. Mortality was assessed in Phase 1 study, and the CINC-1, CINC-2 and MDA levels in the lungs were analyzed in Phase 2. RESULTS: Mortality was lower in the ischemic preconditioning group subjected to 90 minutes of ischemia compared to the group without ischemic preconditioning (I-90: 50% and IPC-90: 15%, p=0.018), and it was lower in the ischemic preconditioning group as a whole compared to the groups without ischemic preconditioning (IPC-14% and I=30%, p=0.006). Lower levels of MDA, CINC-1, and CINC-2 were observed in the animals that were subjected to ischemic preconditioning compared to the animals that were not (MDA: I-45=1.23 nmol/mg protein, and IPC-45=0.62 nmol/mg protein, p=0.0333; CINC-1: I-45=0.82 ng/mL and IPC-45=0.67 ng/mL, p=0.041; CINC-2: I-45=0.52 ng/mL and IPC-45=0.35 ng/mL, p=0.032). CONCLUSION: Ischemic preconditioning reduces mortality, inflammatory process and oxidative stress in rats subjected to intestinal ischemia and reperfusion.

Pentoxifylline associated to hypertonic saline solution attenuates inflammatory process and apoptosis after intestinal ischemia/reperfusion in rats

PURPOSE: To evaluate intestinal inflammatory and apoptotic processes after intestinal ischemia/reperfusion injury, modulated by pentoxifylline and hypertonic saline. METHODS: It was allocated into four groups (n=6), 24 male Wistar rats (200 to 250g) and submitted to intestinal ischemia for 40 min and reperfusion for 80 min: IR (did not receive any treatment); HS group (Hypertonic Saline, 4ml/kg-IV); PTX group (Pentoxifylline, 30mg/kg-IV); HS+PTX group (Hypertonic Saline and Pentoxifylline). All animals were heparinized (100U/kg). At the end of reperfusion, ileal fragments were removed and stained on hematoxylin-eosin and histochemical studies for COX-2, Bcl-2 and cleaved caspase-3. RESULTS: The values of sO2 were higher on treated groups at 40 minutes of reperfusion (p=0.0081) and 80 minutes of reperfusion (p=0.0072). Serum lactate values were lower on treated groups after 40 minutes of reperfusion (p=0.0003) and 80 minutes of reperfusion (p=0.0098). Morphologic tissue injuries showed higher grades on IR group versus other groups: HS (p=0.0006), PTX (p=0.0433) and HS+PTX (p=0.0040). The histochemical study showed lesser expression of COX-2 (p=0.0015) and Bcl-2 (p=0.0012) on HS+PTX group. A lower expression of cleaved caspase-3 was demonstrated in PTX (p=0.0090; PTXvsIR). CONCLUSION: The combined use of pentoxifylline and hypertonic saline offers best results on inflammatory and apoptotic inhibitory aspects after intestinal ischemia/reperfusion. .

Endoscopy ultrasonography guided biliary drainage in the surgical endoscopy era: [revisión]

ANTECEDENTES: La Ecoendoscopia guiada para hepático - gastrostomía, colédoco duodenostomía y colédoco antrostomía, son procedimientos avanzados de la endoscopia biliar y pancreático, y juntos forman el drenaje biliar eco-guiada. La Hepático - gastrostomía está indicada en casos de obstrucción hiliar, mientras que en las lesiones distales el procedimiento de elección es la colédoco - duodenostomía. Ambos procedimientos se deben hacer solamente después de la CPRE sin éxito. OBJETIVOS: Para aclarar a los lectores sobre la indicación de estos procedimientos, que deben ser realizados conforme a un punto de vista multidisciplinaria, con un intercambio de información con el paciente ó su representante legal. MÉTODOS: Todos los informes y estudios de series de casos seleccionados de cohortes fueron seleccionados de acuerdo al sistema de DDTS distributed defect tracking system en el que las palabras clave fueron el drenaje biliar EUS, colédoco-duodenostomía, hepático gastrostomía, la USE, la paliación y el páncreas avanzado, cáncer biliar. RESULTADOS: Por separado se indicó en la definición de los procedimientos de drenaje biliar EUS e incluye los detalles de las técnicas y análisis crítico. CONCLUSIÓN: La hepático- gastrostomía y colédoco duodenostomía-son factibles cuando es realizada por endoscopistas con experiencia en endoscopia pancreática biliar y de eco-endoscopia y se debe realizar en la actualidad bajo un protocolo riguroso en las instituciones educativas.

BACKGROUND: US-guided hepatico - gastrostomy, choledocho-duodenostomy and choledocho-antrostomy are advanced procedures on biliary and pancreatic endoscopy and together make up the echo-guided biliary drainage. Hepatico - gastrostomy is indicated incases of hiliar obstruction, while the procedure of choice is choledocho - duodenostomy indistal lesions. Both procedures must be done only after unsuccessful ERCP. AIMS: To clarify to the readers about indication of these procedures, they must be made under a multidisciplinary view while sharing information with the patient or legal guardian. METHODS: All series cases report and selected cohort studies were selected according to the DDTS system in which key words were EUS biliary drainage, choledocho-duodenostomy, hepatico-gastrostomy, EUS, palliation and pancreatic biliary advanced cancer. RESULTS: Separately it was stated definition on the EUS biliary drainage procedures and it includes the techniques details and critical analysis. CONCLUSION: Hepatico- gastrostomy and Choledocho- duodenostomy are feasible when performed by endoscopists with expertise in bilio pancreatic endoscopy and advanced echo-endoscopy and should be performed currently under rigorous protocol in educational institutions.

Valor diagnóstico da tomografia de coluna cervical em vítimas de trauma contuso / Diagnostic value of tomography of the cervical spine in victims of blunt trauma

OBJETIVO. Avaliar o valor da tomografia computadorizada no diagnóstico de lesões da coluna e medula cervicais em vítimas de trauma contuso. MÉTODOS. Revisão dos prontuários de vítimas de trauma contuso atendidas de janeiro de 2006 a dezembro de 2008. Foram analisados os seguintes dados: epidemiológicos, mecanismo de trauma, transporte das vítimas para o hospital, atendimento intra-hospitalar, critérios de indicação da TC, diagnóstico, tratamento, e evolução das vítimas em estudo. As vítimas foram distribuídas em dois grupos: Grupo I - sem lesão na coluna cervical; Grupo II - com lesão na coluna cervical . RESULTADOS. Foram analisados os prontuários de 3.101 vítimas. A tomografia computadorizada foi indicada em 1.572 (51 por cento) pacientes, Foi observado predomínio masculino entre as vítimas (79 por cento), com média etária de 38,53 anos no Grupo I e 37,60 anos no Grupo II. A distribuição dos mecanismos de trauma foi semelhante nos dois grupos. Lesões encontradas: 53 fraturas, oito listeses vertebrais e oito lesões medulares. As sequelas incluíram: três paraplegias, cinco tetraplegias e oito sequelas de lesão cerebral. No Grupo II ocorreram sete óbitos ,no Grupo I 240. A duração média de internação hospitalar foi de 11 dias para o Grupo I e 26,2 dias para o Grupo II. CONCLUSÃO. A TC de coluna cervical em vítimas de trauma contuso foi eficaz na identificação de lesões da coluna e medula cervicais. Assim, apesar do custo da TC cervical, e da baixa incidência de lesões por ela identificáveis, a sua indicação baseada nos critérios usuais parece justificável.

OBJECTIVE: to assess the value of computed tomography in the diagnosis of cervical spine and spinal cord injuries in victims of blunt trauma. METHODS: we reviewed the charts of blunt trauma victims from January 2006 to December 2008. We analyzed the following data: epidemiology, mechanism of trauma, transportation of victims to the hospital, intra-hospital care, indication criteria for CT, diagnosis, treatment and evolution of the victims. The victims were divided into two groups: Group I - without cervical spine injury, Group II - with cervical spine injury. RESULTS: we gathered medical records from 3,101 victims. Computed tomography was performed in 1572 (51 percent) patients, with male predominance (79 percent) and mean age of 38.53 years in Group I and 37.60 years in Group II. The distribution of trauma mechanisms was similar in both groups. Lesions found included: 53 fractures, eight vertebral listeses and eight spinal cord injuries. Sequelae included: paraplegia in three cases, quadriplegia in eight and brain injury in five. There were seven deaths in Group II and 240 in Group I. The average length of hospital stay was 11 days for Group I and 26.2 days for Group II. CONCLUSION. A CT scan of the cervical spine in victims of blunt trauma was effective in identifying lesions of the cervical spine and spinal cord injuries. Thus, despite the cost of neck CT and the low incidence of lesions identified by it, its indication based on the usual criteria seems justified.

The effects of pneumoperitoneum and controlled ventilation on peritoneal lymphatic bacterial clearance: experimental results in rats

OBJECTIVE: To evaluate the effect of pneumoperitoneum, both alone and in combination with controlled ventilation, on peritoneal lymphatic bacterial clearance using a rat bacterial peritonitis model. METHOD: A total of 69 male Wistar rats were intraperitoneally inoculated with an Escherichia coli solution (109 colony-forming units (cfu)/mL) and divided into three groups of 23 animals each: A (control group), B (pneumoperitoneum under 5 mmHg of constant pressure), and C (endotracheal intubation, controlled ventilation, and pneumoperitoneum as in Group B). The animals were sacrificed after 30 min under these conditions, and blood, mediastinal ganglia, lungs, peritoneum, liver, and spleen cultures were performed. RESULTS: Statistical analyses comparing the number of cfu/sample in each of the cultures showed that no differences existed between the three groups. CONCLUSION: Based on our results, we concluded that pneumoperitoneum, either alone or in association with mechanical ventilation, did not modify the bacterial clearance through the diaphragmatic lymphatic system of the peritoneal cavity.

Endoscopic ultrasound (EUS) diagnosis of blunt pancreatic trauma associated to the superior mesenteric vein thrombosis / Diagnóstico de trauma pancreático associado à trombose da veia mesentérica feito através da ultrassonografia endoscópica

BACKGROUND: Blunt pancreatic injuries occur when a high-energy crushing force is applied to the upper abdomen. In adults, the majority of blunt pancreatic injuries result from motor vehicle accidents. CASE REPORT: Male with 32 years old had a high-energy crushing history in witch he was pressured by the chest on the front car area. His life signs demonstrated to be regular. Ct scan demonstrated body pancreatic edema. All routine laboratorial exams were normal, EUS revealed pancreatic lesion grade II without involvement of the pancreatic duct and an impressive superior mesenteric vein thrombosis. He was sustained by means of anti- coagulation for about two months and after that time the multislice CT scan showed a mesenteric vein recanalization and a normal pancreatic parenchyma. The patient had an uneventfull follow-up. CONCLUSION: Patients presenting possible pancreatic trauma associated to superior mesenteric vein thrombosis, EUS must be used firstly.

INTRODUÇÃO: Traumas pancreáticos fechados ocorrem em acidentes que promovem força intensa no abdome superior, principalmente em acidentes automobilísticos. RELATO DO CASO: Homem de 32 anos foi jogado contra a área frontal de seu automóvel. Seus sinais vitais eram normais. CT mostrou edema pancreático. EUS mostrou lesão pancreática grau II sem envolvimento do ducto pancreático, mas com impressionante trombose da veia mesentérica superior. Ele foi mantido com anticoagulants por dois meses e após este period novo scan mostrou recanalização e pâncreas normal. Teve seguimento favorável. CONCLUSÃO: Paciente apresentando edema pancreático associado a possível trombose de veia mesentérica superior deve ser submetido à EUS para monitorização e acompanhamento.

Evaluation of the effects of ozone therapy in the treatment of intra-abdominal infection in rats

INTRODUCTION: The antibacterial effect of ozone (O3) has been described in the extant literature, but the role of O3 therapy in the treatment of certain types of infection remains controversial. OBJECTIVES: To evaluate the effect of intraperitoneal (i.p.) O3 application in a cecal ligation/puncture rat model on interleukins (IL-6, IL-10) and cytokine-induced neutrophil chemoattractant (CINC)-1 serum levels, acute lung injury and survival rates. METHODS: Four animal groups were used for the study: a) the SHAM group underwent laparotomy; b) the cecal ligation/puncture group underwent cecal ligation/puncture procedures; and c) the CLP+O2 and CLP+O3 groups underwent CLP+ corresponding gas mixture infusions (i.p.) throughout the observation period. IL-6, CINC-1 and IL-10 concentrations were determined by enzyme-linked immunosorbent assay (ELISA). Acute lung injury was evaluated with the Evans blue dye lung leakage method and by lung histology. P<0.05 was considered significant. RESULTS: CINC-1 was at the lowest level in the SHAM group and was lower for the CLP+O3 group vs. the CLP+O2 group and the cecal ligation/puncture group. IL-10 was lower for the SHAM group vs. the other three groups, which were similar compared to each other. IL-6 was lower for the SHAM group vs. all other groups, was lower for the CLP+O3 or CLP+O2 group vs. the cecal ligation/puncture group, and was similar for the CLP+O3 group vs. the CLP+O2 group. The lung histology score was lower for the SHAM group vs. the other groups. The Evans blue dye result was lower for the CLP+O3 group vs. the CLP+O2 group and the cecal ligation/puncture group but similar to that of the SHAM group. The survival rate for the CLP+O3 group was lower than for the SHAM group and similar to that for the other 2 groups (CLP and CLP+O2). CONCLUSION: Ozone therapy modulated the inflammatory response and acute lung injury in the cecal ligation/puncture infection model in rats, although there was no ...

Acute postsurgical suppurative parotitis: current prevalence at Hospital das Clínicas, São Paulo University Medical School / Parotidite aguda pós-cirúgica: prevalência atual no Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo

Postsurgical acute suppurative parotitis is a bacterial gland infection that occurs from a few days up to some weeks after abdominal surgical procedures. In this study, the authors analyze the prevalence of this complication in Hospital das Clínicas/São Paulo University Medical School by prospectively reviewing the charts of patients who underwent surgeries performed by the gastroenterological and general surgery staff from 1980 to 2005. Diagnosis of parotitis or sialoadenitis was analyzed. Sialolithiasis and chronic parotitis previous to hospitalization were exclusion criteria. In a total of 100,679 surgeries, 256 patients were diagnosed with parotitis or sialoadenitis. Nevertheless, only three cases of acute postsurgical suppurative parotitis associated with the surgery were identified giving an incidence of 0.0028 percent. All patients presented with risk factors such as malnutrition, immunosuppression, prolonged immobilization and dehydration. In the past, acute postsurgical suppurative parotitis was a relatively common complication after major abdominal surgeries. Its incidence decreased as a consequence of the improvement of perioperative antibiotic therapy and postoperative support. In spite of the current low incidence, we believe it is important to identify risks and diagnose as quick as possible, in order to introduce prompt and appropriate therapeutic measures and avoid potentially fatal complications with the evolution of the disease.

A parotidite supurativa pós-cirúrgica é infecção bacteriana da glândula que ocorre poucos dias até algumas semanas após procedimento cirúrgico. Os autores analisam a prevalência desta complicação cirúrgica nos últimos 25 anos do Hospital das Clínicas de São Paulo. Foram analisados os prontuários das cirurgias realizadas pelos serviços de Cirurgia do Aparelho Digestivo e Cirurgia Geral da Faculdade de Medicina da Universidade de São Paulo no período de 1980 a 2005, num total de 106790 cirurgias. Todos os prontuários que apresentaram entre os diagnósticos das altas complicações cirúrgicas, parotidite ou sialoadenite foram avaliados. Foram identificados 256 prontuários. Pacientes com outras complicações, ou que já apresentavam sialolitíase ou parotidite crônica anterior à internação foram excluídos do estudo. Foram identificados apenas três casos de parotidite aguda supurativa pós-cirúrgica, revelando incidência de 0,0028 por cento. A parotidite supurativa pós-cirúrgica foi complicação relativamente comum de grandes cirurgias abdominais no passado, com acentuada redução atual da sua incidência decorrente da antibioticoterapia de amplo espectro, além de preparação pré-operatória adequada e suporte pós-operatório dos pacientes. Apesar da baixa incidência atual, consideramos importante identificar seus fatores de risco, assim como realizar diagnóstico precoce, conduta terapêutica apropriada para evitar complicações letais associadas a esta infecção.

Pesquisa nacional sobre condutas na pancreatite aguda / A Brazilian survey regarding the management of acute pancreatitis

OBJETIVO: Avaliar como a pancreatite aguda é vista e tratada pelo cirurgião brasileiro. MÉTODO: Trata-se de um questionário prospectivo enviado aos membros do Colégio Brasileiro de Cirurgiões (CBC). Dois mil questionários foram enviados obtendo-se 618 respostas (30,9 por cento). O questionário constituía de perguntas relacionadas à experiência do cirurgião e ao tratamento da PA. RESULTADOS: Cento e oitente e dois entrevistados (33,6 por cento) disseram tratar até cinco casos por ano e 147 (27,2 por cento) tratam de seis a 10 casos por ano. Dentre os critérios utilizados para a definição de PA, o mais citado foi a avaliação clínica por 306 (57,4 por cento) entrevistados, seguido dos critérios de Ranson por 294 (55,2 por cento) e TC por 262 (49,2 por cento). Com relação ao uso da TC, 275 (51,5 por cento) entrevistados responderam que realizam a TC em todos os doentes com PA. O suporte nutricional parenteral foi o método de escolha indicado por 248 (46,6 por cento) entrevistados. A infecção da coleção e/ou necrose pancreática é a principal indicação operatória com 447 (83,6 por cento) respostas. O melhor período para operar um doente com PA grave foi considerado até quatorze dias por 278 (54,2 por cento) entrevistados. Com relação aos antibióticos, 371 (68,6 por cento) entrevistados disseram que utilizam antibióticos no tratamento da PA grave. CONCLUSÃO: Estes resultados demonstram uma ampla variação no tratamento da PA no Brasil. A pouca experiência dos cirurgiões e os temas controversos são os fatores principais responsável para esta falta de padronização. A realização de um Consenso nacional baseado nos novos conceitos e na experiência mundial é crucial para ajustar estas condutas.

BACKGROUND: to evaluate as AP is managed by the Brazilian surgeon. METHODS: A questionnaire has been sent to 2,000 members of the Brazilian College of Surgeons, with 618 (30.9 percent) answers obtained. The questionnaire consisted of questions related to the experience of the surgeon and in particular to the treatment of AP. RESULTS: One hundred and eighty-two interviewed (33.6 percent) answered to treat up to five cases per year and 147 (27.2 percent) treat six to ten cases per year. The most cited criteria used for the definition of severe AP was clinical evaluation for 306 (57.4 percent) interviewed, followed by the Ranson criteria for 294 (55.2 percent) and CT scan for 262 (49.2 percent). Regarding the use of CT, 275 (51.5 percent) interviewed answered that make use of CT scan for all patients with AP. The parenteral nutritional support was the method of choice indicated for 248 (46.6 percent) interviewed. The infection of fluid collection and/or pancreatic necrosis was the main reason for surgical treatment with 447 (83.6 percent) answers. The optimum period to operate a patient with severe AP was considered up to seven days for 278 (54.2 percent) interviewed. With relation to antibiotics, 371 (68.6 percent) said that they use antibiotics in the treatment of severe AP. CONCLUSION: These findings demonstrate a wide variation in the treatment of AP in Brazil. Little experience of the surgeons and controversial issues are the main factors responsible for this lack of standardization. A national Consensus based on new concepts and worldwide experience is crucial to adjust these thoughts.

Changes in the management of patients with severe acute pancreatitis / Mudanças no manejo de doentes com pancreatite aguda grave

BACKGROUND: Severe acute pancreatitis is present in up to 25 percent of patients with acute pancreatitis, with considerable mortality. Changes in the management of acute pancreatitis in the last 2 decades contributed to reduce the mortality. AIM: To show the evolution in the management of severe acute pancreatitis, comparing two different approaches. METHODS: All patients with severe acute pancreatitis from 1999 to 2005 were included. We compared the results of a retrospective review from 1999 to 2002 (group A) with a prospective protocol, from 2003 to 2005 (group B). In group A severe pancreatitis was defined by the presence of systemic or local complications. In group B the Atlanta criteria were used to define severity. The variables analyzed were: age, gender, etiology, APACHE II, leukocytes, bicarbonate, fluid collections and necrosis on computed tomography, surgical treatment and mortality. RESULTS: Seventy-one patients were classified as severe, 24 in group A and 47 in group B. The mean APACHE II in groups A and B were 10.7 ± 3.5 and 9.3 ± 4.5, respectively. Necrosis was seen in 12 patients (50 percent) in group A and in 21 patients (44.7 percent) in group B. Half of the patients in group A and two (4.3 percent) in group B underwent to pancreatic interventions. Mortality reached 45.8 percent in group A and 8.5 percent in group B. CONCLUSION: A specific approach and a prospective protocol can change the results in the treatment of patients with severe acute pancreatitis.

RACIONAL: A pancreatite aguda grave está presente em até 25 por cento dos doentes com pancreatite aguda, com mortalidade considerável. Mudanças no tratamento da pancreatite aguda nas últimas duas décadas contribuíram para a redução da mortalidade destes doentes. OBJETIVO: Mostrar a evolução do manejo da pancreatite aguda, comparando duas diferentes abordagens. MÉTODOS: Todos os doentes com pancreatite aguda grave de 1999 a 2005 do Serviço de Emergência da Santa Casa de São Paulo, SP, foram incluídos. Os resultados de uma revisão retrospectiva de 1999 para 2002 (grupo A) foram comparados com um protocolo prospectivo, de 2003 para 2005 (grupo B). No grupo A, a pancreatite grave era definida pela presença de complicações sistêmicas ou locais. No grupo B os critérios de Atlanta foram utilizados para definir a gravidade. As variáveis analisadas foram: idade, sexo, etiologia, APACHE II, leucócitos, bicarbonato, coleções e necrose na tomografia, tratamento cirúrgico e mortalidade. RESULTADOS: Setenta e um doentes foram classificados como graves, 24 no grupo A e 47 no grupo B. A média do APACHE II nos grupos A e B foram 10,7 ± 3,5 e 9,3 ± 4,5, respectivamente. A necrose foi vista em 12 doentes (50 por cento) no grupo A e em 21 doentes (44,7 por cento) no grupo B. Metade dos doentes no grupo A e dois (4,3 por cento) no grupo B foram submetidos a operação pancreática. A mortalidade foi de 45,8 por cento no grupo A e 8,5 por cento no grupo B. CONCLUSÃO: Uma abordagem específica e um protocolo prospectivo podem mudar os resultados no tratamento de doentes com pancreatite aguda grave.

Controversies in the management of asymptomatic patients sustaining penetrating thoracoabdominal wounds: [review]

The most challenging diagnostic issue in the management of thoracoabdominal wounds concerns the assessment of asymptomatic patients. In almost one-third of such cases, diaphragmatic injuries are present even in the absence of any clear clinical signs. The sensitivity of noninvasive diagnostic tests is very low in this situation, and acceptable methods for diagnosis are limited to videolaparoscopy or videothoracoscopy. However, these procedures are performed under general anesthesia and present real, and potentially unnecessary, risks for the patient. On the other hand, diaphragmatic hernias, which can result from unsutured diaphragmatic lesions, are associated with considerable morbidity and mortality. In this paper, the management of asymptomatic patients sustaining wounds to the lower chest is discussed, with a focus on the diagnosis of diaphragmatic injuries and the necessity of suturing them.

Repercussões respiratórias e hemodinâmicas do pneumoperitônio na lesão do diafragma: estudo experimental / Hemodynamic and respiratory changes caused by CO2 laparoscopy in an experimental model of diaphragmatic injury

OBJETIVO: Analisar as alterações hemodinâmicas e respiratórias secundárias à laparoscopia em modelo experimental de lesão diafragmática. MÉTODOS: Foram utilizados 15 suínos, distribuídos em três grupos com cinco animais cada, assim constituídos: Grupo 1 - Portadores de lesão diafragmática e avaliados sem pneumoperitônio (CLSP); Grupo 2 - Sem lesão diafragmática e avaliados com pneumoperitônio (SLCP); Grupo 3 - Portadores de lesão diafragmática e avaliados com pneumoperitônio (CLCP). Foram avaliadas variáveis gasométricas, hemodinâmicas e respiratórias. RESULTADOS: Houve alterações significantes da pressão média de artéria pulmonar (PAP), pressão de capilar pulmonar (PCP), PAO2, SAO2 e SVO2. CONCLUSÃO: A videolaparoscopia na presença de lesão do diafragma não acarreta alterações do débito cardíaco e pode ser realizada com segurança, desde que a pressão de pneumoperitônio não ultrapasse valores de 15 mmHg.

OBJECTIVE: The objective of this study was to analyze the hemodynamic and respiratory changes caused by CO2 laparoscopy in an experimental model of diaphragmatic injury. METHODS: Fifteen animals chosen at random were submitted to diaphragmatic injury by means of CO2 laparoscopy. Evaluation consisted of drawing blood samples to analyze blood gases, as well as the hemodynamic and respiratory variables. RESULTS: Alterations occurred in APA, CPP, PAO2, ASO2, VSO2. CONCLUSION: We concluded that videolaparoscopy with pneumoperitoneum pressure under 15mmHg is a safe procedure in patients with diaphragmatic injuries because this pressure level does not cause hemodynamic changes, such as decrease of the cardiac output. [Rev Assoc Med Bras 2007; 53(4): 294-9]