Abstract Background: Pneumonia occurs in about 20% of trauma patients with pulmonary contusions. This study aims to evaluate the association between empirical antibiotic therapy and nosocomial pneumonia in this population. Methods: Retrospective cohort of adult patients admitted to a trauma-surgical ICU. The Antibiotic Therapy Group (ATG) was defined by intravenous antibiotic use for more than 48 h starting on hospital admission, while the Conservative Group (CG) was determined by antibiotic use no longer than 48 h. Primary outcome was microbiologically documented nosocomial pneumonia within 14 days after hospital admission. Logistic regression was used to estimate the association between group allocation and primary outcome. Exploratory analyses evaluating the association between resistant strains in pneumonia and antibiotic use were performed. Results: The study included 177 patients with chest trauma and pulmonary contusion on CTscan. ATG were more severely ill than CG, as shown by higher Injury Severity Score, SAPS3, SOFA score, higher rates, and longer duration of mechanical ventilation. In the multivariate analysis, ATG was associated with a lower incidence of primary outcome (OR = 0.25, 95% CI 0.09-0.64; p < 0.01). Similar results were found in the sensitivity analysis with another set of variables. However, each day of antibiotic use was associated with an increased risk of pneumonia by resistant bacteria (OR = 1.18 per day, 95% CI 1.05-1.36; p < 0.01). Conclusions: Empiric antibiotic therapy was independently associated with lower incidence of nosocomial pneumonia in critically ill patients with pulmonary contusion. However, each day of antibiotic use was associated with increased resistant strains in infected patients. Background 20 contusions population Methods traumasurgical surgical ICU (ATG 4 admission CG (CG 1 performed Results 17 CTscan Score SAPS3 SAPS score rates ventilation OR 025 0 25 0.25 95 0.090.64 009064 0.09 0.64 09 64 0.09-0.64 0.01. 001 0.01 . 01 0.01) variables However 118 18 1.1 1.051.36 105136 1.05 1.36 05 36 1.05-1.36 Conclusions 2 02 0.2 9 090 0.090.6 00906 009 0.0 064 0.6 6 0.09-0.6 00 11 1. 051 1.051.3 10513 105 1.0 136 1.3 3 1.05-1.3 0. 0.090. 0090 06 0.09-0. 1.051. 1051 10 13 1.05-1. 0.090 0.09-0 1.051 1.05-1 0.09- 1.05-

Abstract Background: Systemic inflammatory responses mimicking infectious complications are often present in surgical patients. Methods: The objective was to assess the association between withholding early antimicrobial therapy while investigating alternative diagnoses and worse outcomes in nonseptic patients with suspected nosocomial infection in a retrospective cohort of critically ill surgical patients. The initiation of antibiotic therapy within 24 h of the suspicion of infection was defined as the Early Empirical Antibiotic strategy (EEA) group and the initiation after 24 h of suspicion or not prescribed was defined as the Conservative Antibiotic strategy (CA) group. Primary outcome was composite: death, sepsis, or septic shock within 14 days. Main exclusion criteria were sepsis or an evident source of infection at inclusion. Results: Three hundred and forty patients were eligible for inclusion (74% trauma patients). Age, sex, reason for hospital admission, SAPS3 score, SOFA score, and use of vasopressors or mechanical ventilation were not different between the groups. Within 14 days of inclusion, 100% (130/130) of EEA patients received antibiotics compared to 57% (120/210) of CA patients. After adjusting for confounding variables, there was no association between primary outcome and the groups. In a post hoc subgroup analysis including only patients with a posteriori confirmed infection (by microbiological cultures), delay in initiation of adequate antimicrobial therapy was independently associated with the primary outcome (Odds Ratio = 1.19 per day of delay; 95% CI 1.05–1.37). Conclusions: Withholding early empiric antibiotic therapy was not associated with progression of organ dysfunction within 14 days in nonseptic surgical patients with suspected nosocomial infection without an obvious source. Background Methods 2 (EEA (CA composite death 1 Results 74% 74 (74 . patients) Age sex admission SAPS score groups 100 130/130 130130 130 (130/130 57 120/210 120210 120 210 (120/210 variables by cultures, cultures , cultures) Odds 119 19 1.1 95 1.05–1.37. 105137 1.05–1.37 05 37 1.05–1.37) Conclusions 7 (7 10 130/13 13013 13 (130/13 5 120/21 12021 12 21 (120/21 11 1. 9 10513 1.05–1.3 0 3 ( 130/1 1301 (130/1 120/2 1202 (120/2 1051 1.05–1. 130/ (130/ 120/ (120/ 105 1.05–1 (130 (120 1.05– (13 (12 1.05 (1 1.0

RESUMO Objetivo: avaliar epidemiologia, características anatômicas, manejo e prognóstico de pacientes críticos com fraturas de esterno. Métodos: análise retrospectiva de pacientes internados em unidade de terapia intensiva (UTI) de emergências cirúrgicas e trauma de um centro de trauma Tipo III em São Paulo, Brasil. Resultados: foram admitidos 1552 pacientes traumatizados no período de janeiro de 2012 a abril de 2016. Desses, 439 apresentavam trauma torácico e 13 apresentavam fratura de esterno, configurando 0,9% das admissões de trauma e 3% dos traumas torácicos. Desses pacientes, três apresentavam tórax instável e dois foram submetidos à conduta cirúrgica para fixação da fratura. A mortalidade de pacientes com fratura de esterno foi de 29% (três pacientes). Em um dos óbitos pôde-se atribuir a fratura do esterno como contribuinte principal para o desfecho. Conclusão: a fratura de esterno foi diagnosticada em 0,9% dos pacientes críticos vítimas de trauma em UTI especializada. Somente 15% dos pacientes necessitaram de conduta cirúrgica específica na fase aguda e a mortalidade foi decorrente das outras lesões na maior parte dos casos.

ABSTRACT Objective: to evaluate epidemiology, anatomical characteristics, management, and prognosis of critical patients with sternum fractures. Methods: retrospective analysis of patients admitted to intensive care unit (ICU) of a Level III trauma center in Sao Paulo, Brazil. Results: 1552 trauma patients were admitted from January 2012 to April 2016. A total of 439 patients had thoracic trauma and among these, 13 patients had sternum fracture, making up 0.9% of all trauma admissions and 3% of all thoracic trauma cases. Three of these 13 patients had unstable chest, two underwent surgical management for fracture fixation, and three died (mortality was of 29%). In one of the deaths, sternum fracture was assessed as the main contributor to the outcome. Conclusion: sternum fracture was diagnosed in 0.9% of critical trauma patients in a specialized ICU. Only 15% of patients required specific surgical management in the acute phase. In most cases, mortality was due to other injuries.

OBJECTIVES: The benefits of implementing point-of-care ultrasound (POCUS) in the emergency department are well established. Ideally, physicians should be taught POCUS during medical school. Several different courses have been designed for that purpose and have yielded good results. However, medical students need specifically designed courses that address the main objectives of knowledge acquisition and retention. Despite that, there is limited evidence to support knowledge retention, especially in the mid-term. The purpose of this study is to evaluate short- and mid-term knowledge retention after a student-aimed ultrasound course. METHODS: Medical students participating in a medical student trauma symposium (SIMPALT) in 2017 were included. Their profiles and baseline ultrasound knowledge were assessed by a precourse questionnaire (PRT). The same questionnaire was used one week (1POT) and three months (3POT) after the course. RESULTS: Most of the participants were 1st- to 4th- year medical students. None had prior ultrasound knowledge. They reported costs as the major barrier (65%) to enrollment in an ultrasound course. A comparison between the PRT and 1POT results showed a statistically significant difference (p<0.02), while no difference was found between 1POT and 3POT (p>0.09). CONCLUSION: Our findings support the use of a tailored ultrasound course for medical students. Knowledge acquisition and mid-term retention may be achieved by this specific population.

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.

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.

OBJETIVO: avaliar o resultado da integridade da parede abdominal após utilização do fechamento assistido a vácuo e da bolsa de Bogotá. MÉTODOS: um estudo retrospectivo foi realizado no Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP), identificando os pacientes submetidos à técnica de fechamento abdominal temporário (FAT) entre janeiro de 2005 e dezembro de 2011. Os dados foram coletados por meio de revisão de prontuários. Os critérios de inclusão foram indicação de FAT e sobrevivência até o fechamento definitivo da parede abdominal. No período pós-operatório, apenas um grupo de três cirurgiões, seguiu todos os pacientes e realizou as reoperações. Além disso, independente da técnica de FAT utilizada, foi aplicada a tática de fechamento fascial progressivo durante as reoperações. RESULTADOS: Vinte e oito pacientes foram incluídos. Não houve diferença estatística nas taxas de fechamento primário e tempo médio de fechamento fascial. CONCLUSÃO: O fechamento assistido a vácuo e a bolsa de Bogotá não diferem significativamente em relação ao resultado da integridade da parede abdominal após as reoperações. Isso se deve ao acompanhamento de uma equipe específica e a adoção de técnica de fechamento fascial progressivo.

OBJECTIVE: to evaluate the outcome of abdominal wall integrity of both techniques. METHODS: a retrospective study was carried out at the Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, identifying the patients undergoing temporary abdominal closure (TAC) from January 2005 to December 2011. Data were collected through the review of clinical charts. Inclusion criteria were indication of TAC and survival to definitive abdominal closure. In the post-operative period only a group of three surgeons followed all patients and performed the reoperations. RESULTS: Twenty eightpatients were included. The difference in primary closure rates and mean time for fascial closure did not reach statistical significance (p=0.98 and p=0.23, respectively). CONCLUSION: VAC and Bogota Bag do not differ significantly regarding the outcome of abdominal wall integrity, due to the monitoring of a specific team and the adoption of progressive closure

Avaliação de eficácia da laparoscopia, associada à análise bacteriológica do líquido intraperitoneal pela coloração de Gram., no diagnóstico de lesões intra-abdominais provocadas em cães com arma de ar comprimido. A alta incidência de óbitos como resultado de ferimentos por arma de fogo tem contribuído para implantação de novas técnicas diagnósticas. O uso crescente de laparoscopia diagnóstica em urgências torna necessário aprimorar qualidade e fidedignidade dos resultados obtidos. Este experimento avalia acurácia, sensibilidade e especificidade da laparoscopia, incluindo 20 cães submetidos a trauma abdominal, com disparo do tipo encostado, e cinco cães como grupo de controle. Na laparoscopia, foram feitos inventário sistemático da cavidade abdominal, conferido por laparotomia, e coleta de líquido intraperitoneal para análise bacteriológica. A laparoscopia apresentou acurácia de 88,29%, sensibilidade de 88,29% e especificidade de 100%. O valor preditivo positivo da coloração de Gram foi 100%. Concluiu-se que a laparoscopia é eficaz no diagnóstico de lesões intra-abdominais provocadas por arma de ar comprimido, em cães hemodinamicamente estáveis. Mas, algumas lesões, evidenciadas na laparotomia, passaram despercebidas na laparoscopia. Realização concomitante de análise bacteriológica pela coloração de Gram pode aumentar a eficácia e diminuir a possibilidade de erros no diagnóstico de lesões. Laparoscopia associada à análise bacteriológica possibilita melhores resultados com mínimo dano ao paciente

The high incidence of death as a result of injuries by firearms contributed to the introduction of new diagnostic techniques. Such as the use of videolaparoscopy emergency situations. The present experiment intends to evaluate the efficacy of laparoscopy associated with the analysis of intraperitoneal liquid by Gram-stainingm as wekk as ti measure the accuracy, sensitivity and specificity of videolaparoscopy compared to exploratory laparotomy in the diagnostic of intraabdominal lesions. Twenty dogs were submitted to abdominal penetrating trauma by air-gun close to the abdominal wall. During videolaparoscopy, a systematic evaluation of the abdominal cavity was performed and material for Gram-stain was collected. Videolaparoscopy was followed by exploratory laparotomy and results of both methods were compared, and accuracy, sensitivity and specificity calculated. Videolaparoscopy showed an accuracy of 88,29%, a sensitivity of 88,29% and a specificity of 100%. The positive predictive value of Gram-stain was 100%. It can be concluded that videolaparoscopy is efficient in the diagnosis of a large number of intraabdominal lesions induced by air-gun in hemodynamically stable dogs. Nevertheless, some lesions localized in mesentery, small intestine, colon, spleen, left kidney and vascular structures evident by exploratory laparotomy remained undetected by videolaparoscopy. Concomitant analysis of intraperitoneal liquid by Gram-staining can increase the efficacy and decrease the possibility of missing in the diagnosis of such lesions.

A despeito da controvérsia existente na literatura com relação aos benefícios da linfadenectomia na sobrevida dos doentes submetidos a ressecções curativas para tratamento do adenocarcinoma gástrico, é inegável que a linfadenectomia ampliada (nível II na classificação japonesa) contribui para o melhor estadiamento e prognóstico destes pacientes. Este procedimento permite-nos melhor identificar aqueles pacientes que têm pior prognóstico e oferecer-lhes novas formas de terapia adjuvante. Como o principal argumento para a não realização de cirurgias mais alargadas é que estas são acompanhadas de maior morbidade e mortalidade, os autores estudaram prospectivamente parâmetros relacionados a esses índices nas gastrectomias com linfadenectomia nível 11 (D2) que tiveram intenção curativa. Para tanto, estudaram-se a taxa de mortalidade, o tempo operatório, as unidades de glóbulos transfundidas, as complicações e o tempo de internação pós-operatória. Entre dezembro de 1992 e fevereiro de 1997 foram internados 86 pacientes com diagnóstico de adenocarcinoma gástrico, dos quais, em 27, atendidos por uma mesma equipe interessada no tratamento destes tumores, houve ressecção cirúrgica com intenção curativa e o tratamento consistiu de gastrectomia acompanhada de linfadenectomia D2. A gastrectomia subtotal foi realizada em 17 doentes, a total em três e a total ampliada em sete. Nove doentes tinham tumores superficiais. Não houve mortalidade entre os pacientes submetidos a ressecções D2; o tempo médio operatório foi de 208,7 minutos; receberam em média 0,2 unidades de glóbulos e a incidência de complicações foi de 33,3%. A permanência hospitalar pós-operatória média foi de 8,6 dias. Foram estudados 854 linfonodos, dos quais 22,1% eram positivos para tumor metastático. Os autores concluem que a dissecção D2 pode ser feita de forma segura e não deve ser evitada por causa do risco de complicações. Permite estadiamento anatomopatológico mais preciso e melhor avaliação do prognóstico destes pacientes.

Despite the existing controversy concerning the benefits of lymphadenectomy on the improvement of survival rates of patients submitted to curative ressections of gastric adenocarcinoma, it is undeniable that extended lymphadenectomy (level from japanese classification) helps staging and contributes to a more accurate prognosis of those patients. This procedure provides the opportunity to better select patients with the worse prognosis and offer them new forms of adjuvant therapy. Since the most important argument against a more radical surgery is a higher incidence of complications and mortality, the authors prospectively evaluated them by performing gastrectomies with systematic D2 lymphadenectomy in patients treated with curative intention. For this purpose, the authors studied mortality rates, operative time, blood transfusion, morbidity and hospital stay. Between december 1992 and february 1997, 86 patients were admitted for treatment of gastric adenocarcinoma: 27 of them were seen by the same surgical team and underwent a curative operative procedure had an operative procedure, gastrectomy with D2 lymphadenectomy. Subtotal gastrectomy was performed in 17 patients and total gastrectomy in 10. Nine patients had superficial tumors. There were no deaths related to D2 dissection. Operative mean time was 208.7 minutes. Patients received a mean of O.2 units of blood transfusion: complications were observed in 33.3% and mean hospital stay was 8.6 days after surgery. Eight hundred and fifty four lymphonodes were sampled and 22.1% of them had metastatic tumor. The authors conclude that D2 lymphadenectomy: He can be done safely and should not be avoided based on concerns of complications. It sure leads to a more accurate pathologic staging and better prognosis analysis for those patients.