RESUMO As complicações pós-operatórias de origem infecciosa são de extrema importância para o cirurgião e toda a equipe de assistência médico-hospitalar. Dentre essas complicações, a infecção de sítio cirúrgico (ISC) se configura como um dos eventos mais precoces e mais prevalentes, sendo considerada uma complicação intrínseca ao procedimento. Em pacientes oncológicos submetidos a ressecções de tumores do aparelho digestivo, existe uma confluência de diversos fatores de risco para ISC, tornando-se necessário o estabelecimento de medidas para controlar ao máximo essa condição, e, assim, proporcionar um melhor prognóstico a esses pacientes. O manuseio de estruturas com elevada densidade de microrganismos patogênicos, como o cólon, o performance status do paciente, o estado nutricional, a realização de quimioterapia e/ou radioterapia, além do próprio procedimento cirúrgico em si, em geral prolongado e mais complexo quando comparado com patologias benignas deste sistema, são alguns dos fatores de risco que contribuem para um aumento na incidência de ISC nessa população. Assim, esta revisão buscou fornecer uma análise qualitativa e um resumo da literatura publicada acerca da ISC nos pacientes submetidos a ressecções de tumores malignos do aparelho digestivo e bem estruturados no pós-operatório, visando obter dados objetivos do problema e alertar sobre a necessidade de protocolos pré-, peri- e pós-operatórios bem-estruturados e individualizados, capazes de prevenir a ocorrência desses eventos. pósoperatórias pós operatórias médicohospitalar. médicohospitalar médico hospitalar. hospitalar médico-hospitalar (ISC prevalentes tornandose tornando condição assim patogênicos cólon paciente nutricional eou ou radioterapia si sistema população Assim pósoperatório, pósoperatório operatório, operatório pós-operatório pré, pré , pré- peri pósoperatórios operatórios bemestruturados individualizados

ABSTRACT Postoperative infectious complications are extremely important to surgeons and the entire medical care team. Among these complications, surgical site infection (SSI) appears to be one of the earliest and most prevalent events and is considered an inherent complication of surgical procedures. In oncological patients submitted to resections of digestive system tumors, there is a confluence of several risk factors for SSI, making it necessary to establish measures to maximize the control of this condition to provide a better prognosis for these patients. Some risk factors for SSI are the manipulation of structures hosting the highest density of pathogenic microorganisms, such as the colon, the patient's performance status, the patient's nutritional status, the use of chemotherapy and/or radiotherapy, and the surgical procedure itself, which tends to last longer and be more complex than surgeries for benign conditions of the digestive system. Therefore, this review sought to provide a qualitative analysis and a summary of the literature regarding the SSI of postoperative tumor patients who underwent surgical resection and were well-structured postoperatively, to provide objective data on this problem, and alert about the well-structured needs of individualized pre-, peri-, and post-protocols to avoid the development of these events. team (SSI procedures tumors microorganisms colon patient s status andor or radiotherapy itself Therefore wellstructured well structured postoperatively problem pre, pre , pre- peri, peri peri- postprotocols post protocols

Abstract Objective: To develop a convolutional neural network (CNN) model, trained with the Brazilian “Estudo Longitudinal de Saúde do Adulto Musculoesquelético” (ELSA-Brasil MSK, Longitudinal Study of Adult Health, Musculoskeletal) baseline radiographic examinations, for the automated classification of knee osteoarthritis. Materials and Methods: This was a cross-sectional study carried out with 5,660 baseline posteroanterior knee radiographs from the ELSA-Brasil MSK database (5,660 baseline posteroanterior knee radiographs). The examinations were interpreted by a radiologist with specific training, and the calibration was as established previously. Results: The CNN presented an area under the receiver operating characteristic curve of 0.866 (95% CI: 0.842-0.882). The model can be optimized to achieve, not simultaneously, maximum values of 0.907 for accuracy, 0.938 for sensitivity, and 0.994 for specificity. Conclusion: The proposed CNN can be used as a screening tool, reducing the total number of examinations evaluated by the radiologists of the study, and as a double-reading tool, contributing to the reduction of possible interpretation errors. Objective (CNN Estudo Musculoesquelético ELSABrasil ELSA Brasil Health Musculoskeletal osteoarthritis Methods crosssectional cross sectional 5660 5 660 5,66 (5,66 radiographs. . radiographs) training previously Results 0866 0 866 0.86 95% 95 (95 CI 0.8420.882. 08420882 0.842 0.882 842 882 0.842-0.882) achieve simultaneously 0907 907 0.90 accuracy 0938 938 0.93 sensitivity 0994 994 0.99 specificity Conclusion tool doublereading double reading errors 566 66 5,6 (5,6 086 86 0.8 9 (9 8420 0.8420.882 0842088 0842 0.84 0882 0.88 84 88 0.842-0.882 090 90 0.9 093 93 099 99 56 6 5, (5, 08 8 0. ( 0.8420.88 084208 084 088 0.842-0.88 09 (5 0.8420.8 08420 0.842-0.8 0.8420. 0.842-0. 0.8420 0.842-0 0.842-

Resumo Objetivo: Desenvolver um modelo computacional - rede neural convolucional (RNC) - treinado com radiografias da linha de base do Estudo Longitudinal de Saúde do Adulto Musculoesquelético (ELSA-Brasil Musculoesquelético), para a classificação automática de osteoartrite dos joelhos. Materiais e Métodos: Trata-se de um estudo transversal abrangendo todos os exames da linha de base do ELSA-Brasil Musculoesquelético (5.660 radiografias dos joelhos em incidência posteroanterior). Os exames foram interpretados por médico radiologista com treinamento específico e calibração previamente publicada. Resultados: A RNC desenvolvida apresentou área sob a curva característica de operação do receptor de 0,866 (IC 95%: 0,842-0,882). O modelo pode ser calibrado para alcançar, não simultaneamente, valores máximos de 0,907 para acurácia, 0,938 para sensibilidade e 0,994 para especificidade. Conclusão: A RNC desenvolvida pode ser utilizada como ferramenta de triagem, reduzindo o número total de exames avaliados pelos radiologistas do estudo, e/ou como ferramenta de segunda leitura, contribuindo com a redução de possíveis erros de interpretação. Objetivo (RNC ELSABrasil ELSA Brasil Musculoesquelético, , Musculoesquelético) Métodos Tratase Trata se 5.660 5660 5 660 (5.66 posteroanterior. posteroanterior . posteroanterior) publicada Resultados 0866 0 866 0,86 IC 95% 95 0,8420,882. 08420882 0,842 0,882 842 882 0,842-0,882) alcançar simultaneamente 0907 907 0,90 acurácia 0938 938 0,93 0994 994 0,99 especificidade Conclusão triagem eou ou leitura interpretação 5.66 566 66 (5.6 086 86 0,8 9 8420 0,8420,882 0842088 0842 0,84 0882 0,88 84 88 0,842-0,882 090 90 0,9 093 93 099 99 5.6 56 6 (5. 08 8 0, 0,8420,88 084208 084 088 0,842-0,88 09 5. (5 0,8420,8 08420 0,842-0,8 ( 0,8420, 0,842-0, 0,8420 0,842-0 0,842-

Resumo Objetivo: Desenvolver um modelo computacional - rede neural convolucional (RNC) - treinado com radiografias da linha de base do Estudo Longitudinal de Saúde do Adulto Musculoesquelético (ELSA-Brasil Musculoesquelético), para a classificação automática de osteoartrite dos joelhos. Materiais e Métodos: Trata-se de um estudo transversal abrangendo todos os exames da linha de base do ELSA-Brasil Musculoesquelético (5.660 radiografias dos joelhos em incidência posteroanterior). Os exames foram interpretados por médico radiologista com treinamento específico e calibração previamente publicada. Resultados: A RNC desenvolvida apresentou área sob a curva característica de operação do receptor de 0,866 (IC 95%: 0,842-0,882). O modelo pode ser calibrado para alcançar, não simultaneamente, valores máximos de 0,907 para acurácia, 0,938 para sensibilidade e 0,994 para especificidade. Conclusão: A RNC desenvolvida pode ser utilizada como ferramenta de triagem, reduzindo o número total de exames avaliados pelos radiologistas do estudo, e/ou como ferramenta de segunda leitura, contribuindo com a redução de possíveis erros de interpretação.

Abstract Objective: To develop a convolutional neural network (CNN) model, trained with the Brazilian “Estudo Longitudinal de Saúde do Adulto Musculoesquelético” (ELSA-Brasil MSK, Longitudinal Study of Adult Health, Musculoskeletal) baseline radiographic examinations, for the automated classification of knee osteoarthritis. Materials and Methods: This was a cross-sectional study carried out with 5,660 baseline posteroanterior knee radiographs from the ELSA-Brasil MSK database (5,660 baseline posteroanterior knee radiographs). The examinations were interpreted by a radiologist with specific training, and the calibration was as established previously. Results: The CNN presented an area under the receiver operating characteristic curve of 0.866 (95% CI: 0.842-0.882). The model can be optimized to achieve, not simultaneously, maximum values of 0.907 for accuracy, 0.938 for sensitivity, and 0.994 for specificity. Conclusion: The proposed CNN can be used as a screening tool, reducing the total number of examinations evaluated by the radiologists of the study, and as a double-reading tool, contributing to the reduction of possible interpretation errors.

RESUMO - RACIONAL: A pancreatectomia laparoscópica está se tornando uma abordagem amplamente usada para lesões benignas e malignas do pâncreas. OBJETIVOS: Descrever como realizar a pancreatectomia distal laparoscópica usando a Clockwise Technique. MÉTODOS: Paciente feminina com 18 anos de idade, apresentando tumor bem definido no corpo pancreático com 4 cm de diâmetro que sugeria o diagnóstico de tumor sólido pseudopapilar (tumor de Frantz). O paciente foi considerado para pancreatectomia distal laparoscópica pela Clockwise Technique. RESULTADOS: A Clockwise Technique parece apresentar outras vantagens técnicas significativas que facilitam a realização do procedimento. CONCLUSÕES: A pancreatectomia distal laparoscópica foi realizada com a clockwise technique, obtendo-se resultados satisfatórios.

ABSTRACT - BACKGROUND: Laparoscopic pancreatectomy is currently a widely used approach for benign and malignant lesions of the pancreas. AIMS: This study aimed to describe how to perform a laparoscopic distal pancreatectomy using The Clockwise Technique. METHODS: An 18-year-old female patient presented with a well-defined tumor in the pancreatic body with 4 cm in diameter that suggested a diagnosis of solid pseudopapillary tumor (Frantz’s tumor). The patient was recommended for laparoscopic distal pancreatectomy by using The Clockwise Technique. RESULTS: The clockwise, caudal-to-cephalic approach appears to have other significant technical advantages that facilitate the performance of the procedure. CONCLUSIONS: A laparoscopic distal pancreatectomy performed using The Clockwise Technique provides satisfactory outcomes.

Resumo Introdução Péssimas condições de saúde bucal vêm sendo apontadas como prejudiciais às pessoas acometidas pela hanseníase, pois contribuem para a piora do quadro clínico desses indivíduos. Objetivo Este trabalho objetiva avaliar as condições de saúde bucal dos indivíduos atendidos por um serviço especializado no município de Sobral, no Ceará, e comparar dois grupos (com e sem reação hansênica) quanto às condições orais. Método Trata-se de um estudo transversal realizado no Ambulatório de Hanseníase do município de Sobral, no Ceará, com 56 pacientes em tratamento. Foram realizados um levantamento epidemiológico em saúde bucal e uma entrevista que coletaram informações sobre condições de saúde bucal, dados socioeconômicos, utilização dos serviços odontológicos e percepção entre doença e saúde bucal. Para a análise estatística entre os grupos, foi realizada uma análise bivariada, seguida por uma análise multivariada. Resultados Houve predomínio de sexo masculino, baixa escolaridade e diagnóstico multibacilar. Apesar da relação estatisticamente significante entre reação hansênica e cárie dentária, necessidade de exodontia e/ou endodontia, sangramento gengival, cálculo dentário e bolsa periodontal, apenas esta última apresentou associação significativa (p = 0,019) na análise multivariada. Conclusão Os participantes deste estudo apresentaram precárias condições de saúde bucal, sendo piores naqueles com reações hansênicas.

Abstract Background Poor oral health conditions are being considered as harmful for people affected by Hansen’s disease, since they contribute to worsening the clinical condition of these individuals. Objective This study aims to evaluate the oral health conditions of individuals attended by a specialized service in the city of Sobral, Ceará, and to compare two groups (with and without Hansen’s disease reaction) regarding oral conditions. Method A cross-sectional study was carried out at the Ambulatório de Hanseníase in the city of Sobral, Ceará, Brazil, with 56 patients being treated. An epidemiological survey was conducted on oral health and an interview that collected information on oral health conditions, socioeconomic data, use of dental services and perception between the disease and oral health. For the statistical analysis between the groups, a bivariate analysis was performed, followed by a multivariate analysis. Results Predominance was the male gender, low level of schooling and multibacillary diagnosis. Despite the statistically significant relationship between presence of Hansen’s disease reaction and the presence of dental caries, need for exodontia and / or endodontics, gingival bleeding, dental calculus and periodontal pocket, only the latter had a significant association (p = 0.019) in the multivariate analysis. Conclusion The participants of this study presented poor oral health conditions, being worse in those who presented Hansen’s disease reactions.

RESUMO Racional: O procedimento a Hartmann permanece sendo o tratamento de escolha da maioria dos cirurgiões para o tratamento cirúrgico de urgência da diverticulite perfurada, entretanto está associado com altas taxas de não reversão da ostomia e de morbidade pós-operatória. Objetivo: Estudar os resultados após o procedimento de Hartmann vs. ressecção com anastomose primária, com ou sem ileostomia, para o tratamento da diverticulite perfurada com peritonite purulenta ou fecal (grau de Hinchey III ou IV), e comparar as vantagens entre as duas formas de tratamento. Método: Busca sistemática na literatura de artigos observacionais e randomizados comparando ressecção com anastomose primária vs. procedimento de Hartmann no tratamento de urgência da diverticulite perfurada. Analisar como desfechos primários a mortalidade após a operação de urgência e a morbidade geral após ela; como desfechos secundários, a morbidade severa após a operação de urgência, as taxas de não reversão da ostomia, a morbidade geral e severa após a reversão. Resultados: Não houve diferenças significativas entre os procedimentos cirúrgicos para mortalidade, morbidade geral e morbidade severa. Contudo, as diferenças foram significativas estatisticamente favorecendo anastomose primária na comparação com procedimento de Hartmann nos desfechos taxas de não reversão do estoma, morbidade geral e morbidade severa após reversão. Conclusão: A anastomose primária apresenta-se como boa alternativa ao procedimento de Hartmann, sem aumento de mortalidade e morbidade, e com melhores resultados na operação de reconstrução do trânsito intestinal.

ABSTRACT Background: The Hartmann procedure remains the treatment of choice for most surgeons for the urgent surgical treatment of perforated diverticulitis; however, it is associated with high rates of ostomy non-reversion and postoperative morbidity. Aim: To study the results after the Hartmann vs. resection with primary anastomosis, with or without ileostomy, for the treatment of perforated diverticulitis with purulent or fecal peritonitis (Hinchey grade III or IV), and to compare the advantages between the two forms of treatment. Method: Systematic search in the literature of observational and randomized articles comparing resection with primary anastomosis vs. Hartmann’s procedure in the emergency treatment of perforated diverticulitis. Analyze as primary outcomes the mortality after the emergency operation and the general morbidity after it. As secondary outcomes, severe morbidity after emergency surgery, rates of non-reversion of the ostomy, general and severe morbidity after reversion. Results: There were no significant differences between surgical procedures for mortality, general morbidity and severe morbidity. However, the differences were statistically significant, favoring primary anastomosis in comparison with the Hartmann procedure in the outcome rates of stoma non-reversion, general morbidity and severe morbidity after reversion. Conclusion: Primary anastomosis is a good alternative to the Hartmann procedure, with no increase in mortality and morbidity, and with better results in the operation for intestinal transit reconstruction.

ABSTRACT OBJECTIVE: To estimate the seroprevalence of SARS-CoV-2 in the state of Maranhão, Brazil. METHODS: A population-based household survey was performed, from July 27, 2020 to August 8, 2020. The estimates considered clustering, stratification and non-response. Qualitative detection of IgM and IgG antibodies was performed in a fully-automated Elecsys® Anti-SARS-CoV-2 electrochemiluminescence immunoassay on the Cobas® e601 analyzer (Roche Diagnostics). RESULTS: In total, 3,156 individuals were interviewed. Seroprevalence of total antibodies against SARS-CoV-2 was 40.4% (95%CI 35.6-45.3). Population adherence to non-pharmaceutical interventions was higher at the beginning of the pandemic than in the last month. SARS-CoV-2 infection rates were significantly lower among mask wearers and among those who maintained social and physical distancing in the last month compared to their counterparts. Among the infected, 26.0% were asymptomatic. The infection fatality rate (IFR) was 0.14%, higher for men and older adults. The IFR based on excess deaths was 0.28%. The ratio of estimated infections to reported cases was 22.2. CONCLUSIONS: To the best of our knowledge, the seroprevalence of SARS-CoV-2 estimated in this population-based survey is one of the highest reported. The local herd immunity threshold may have been reached or might be reached soon.

ABSTRACT OBJECTIVE: To estimate the seroprevalence of SARS-CoV-2 in the state of Maranhão, Brazil. METHODS: A population-based household survey was performed, from July 27, 2020 to August 8, 2020. The estimates considered clustering, stratification and non-response. Qualitative detection of IgM and IgG antibodies was performed in a fully-automated Elecsys® Anti-SARS-CoV-2 electrochemiluminescence immunoassay on the Cobas® e601 analyzer (Roche Diagnostics). RESULTS: In total, 3,156 individuals were interviewed. Seroprevalence of total antibodies against SARS-CoV-2 was 40.4% (95%CI 35.6-45.3). Population adherence to non-pharmaceutical interventions was higher at the beginning of the pandemic than in the last month. SARS-CoV-2 infection rates were significantly lower among mask wearers and among those who maintained social and physical distancing in the last month compared to their counterparts. Among the infected, 26.0% were asymptomatic. The infection fatality rate (IFR) was 0.14%, higher for men and older adults. The IFR based on excess deaths was 0.28%. The ratio of estimated infections to reported cases was 22.2. CONCLUSIONS: To the best of our knowledge, the seroprevalence of SARS-CoV-2 estimated in this population-based survey is one of the highest reported. The local herd immunity threshold may have been reached or might be reached soon.

RESUMO Introdução: A infecção do sítio cirúrgico é a complicação comum, com taxas significativas de morbimortalidade, representando considerável problema econômico para o sistema de saúde. Objetivo: Realizar revisão narrativa da literatura sobre infecção de sítio cirúrgico e os princípios da antibioticoprofilaxia para atualizar o conhecimento de seu uso em cirurgia. Método: Utilizou-se para a pesquisa a base de dados Medline, Ovid, Google Scholar, National Library of Medicine (PubMed), Cochrane e SciELO. As palavras-chave usadas foram “anti-bacterial agents”; “antibioticoprophylaxis” AND “surgical wound infection”. Os critérios de inclusão foram artigos de publicação recente, com textos completos disponíveis e realizados em humanos. Resultado: Um total de 29 artigos foi avaliado e selecionado de acordo com os critérios de elegibilidade. Conclusão: A infecção do sítio cirúrgico é a complicação pós-operatória mais comum. O ponto-chave da sua prevenção consiste na combinação de várias intervenções que visam reduzir os fatores de risco, tais como: a obediência às novas diretrizes do Centro de Controle e Prevenção de Doenças; aos princípios do uso de antibióticos profiláticos; fatores e índice de risco do local cirúrgico; tempo de administração; duração e dosagem dos antibióticos. Esses dados estão disponíveis neste artigo.

ABSTRACT Introduction: Infection of the surgical site is the common complication, with significant rates of morbidity and mortality, representing a considerable economic problem for the health system. Objective: To carry out a narrative review of the literature on surgical site infection and the principles of antibiotic prophylaxis to update the knowledge of its use in surgery. Method: Medline, Ovid, Google Scholar, National Library of Medicine (PubMed), Cochrane and SciELO were used for the research. The keywords used were “anti-bacterial agents”; “antibioticoprophylaxis” AND “surgical wound infection”. The inclusion criteria were articles of recent publication, with full texts available and performed in humans. Result: A total of 29 articles were evaluated and selected according to the eligibility criteria. Conclusion: Infection of the surgical site is the most common postoperative complication. The key point of its prevention is the combination of several interventions that aim to reduce risk factors, such as: compliance with the new guidelines of the Center for Disease Control and Prevention; the principles of the use of prophylactic antibiotics; factors and risk index of the surgical site; administration time; duration and dosage of antibiotics. These data are available in this article.

Oral squamous cell carcinoma (OSCC) is one of the most common malignances. In epithelial-mesenchymal transition (EMT), epithelial cells switch to mesenchymal-like cells exhibiting high mobility. This migratory phenotype is significant during tumor invasion and metastasis.Objective: The aim of this study is to evaluate the expression of the EMT markers E-cadherin, N-cadherin and vimentin in OSCC.Material and Methods : Immunohistochemical detection of E-cadherin, N-cadherin and vimentin was performed on 20 OSCC samples. Differences in the expression of each protein at the invasive front (IF) and in the central/superficial areas (CSA) of the tumor were assessed. Differences in the expression of each protein at the IF of both histologically high- and low-invasive OSCCs were evaluated. Associations among expression of proteins at the IF were assessed. Correlations between the expression levels of each protein at the IF and the tumor stage and clinical nodal status were also evaluated.Results : Reduced expression of E-cadherin was detected in 15 samples (75%). E-cadherin expression was reduced at the IF when compared to the CSA and in high-invasive tumors when compared to low-invasive tumors. All samples were negative for N-cadherin, even though one sample showed an inconspicuous expression. Positive expression of vimentin was observed in 6 samples (30%). Nevertheless, there was no difference in vimentin expression between the IF and the CSA regions or between the low- and high-invasive tumors. Furthermore, no association was observed among protein expression levels at the IF. Finally, no correlations were observed between each protein’s expression levels and tumor stage or clinical nodal status.Conclusions : Reduced E-cadherin expression at the IF and its association with histological invasiveness suggest that this protein is a noteworthy EMT marker in OSCC. Although vimentin was also detected as an EMT marker, its expression was neither limited to the IF nor was it related to histological invasiveness.