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au:Motta, Luiz Henrique

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Acute Distal Biceps Tendon Injury: Diagnosis and Treatment
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Ribas, Luiz Henrique Boraschi Vieira

; Schor, Breno

; Motta Filho, Geraldo da Rocha

; Belangero, Paulo Santoro

Revista Brasileira de Ortopedia

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sep 2023, Volume 58 N. 5 Pages 689 - 697

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Acute distal biceps injuries clinically present with sudden pain and acute loss of flexion and supination strength. The main injury mechanism occurs during the eccentric load of the biceps. The hook test is the most significant examination test, presenting the highest sensibility and specificity for this lesion. Magnetic resonance imaging, the gold standard imaging test, can provide information regarding integrity and identify partial and/or complete tears. The surgical treatment uses an anterior or double approach and several reattachment techniques. Although there is no clinical evidence to recommend one fixation method over the other, biomechanical studies show that the cortical button resists better to failure. Although surgical treatment led to an 89% rate of return to work in 14 weeks, the recovery of high sports performance occurred in 1 year, with unsustainable outcomes.

Resumo As lesões agudas do tendão distal do bíceps se apresentam, clinicamente, com uma dor súbita associada a perda aguda de força de flexão e supinação. Seu principal mecanismo de lesão ocorre durante contração excêntrica do bíceps. O “Hook Test” é o principal teste semiológico, sendo o mais sensível e específico. A ressonância magnética, exame padrão ouro para o diagnóstico, pode fornecer informações sobre a integridade, identificando as lesões parciais e/ou completas. O tratamento cirúrgico pode ser realizado por duas vias principais: anterior e por dupla via porém as técnicas de reinserção tendínea são diversas não havendo evidência clínica que recomende um método de fixação em detrimento ao outro; embora o botão cortical apresente maior resistência a falha nos estudos biomecânicos. Com o tratamento cirúrgico o retorno as atividades laborais foi de 89% em 14 semanas (média) porém ao esporte de alto rendimento o prazo foi longo, média de 1 ano, e não duradouro.

https://doi.org/10.1055/s-0043-1771488

Unusual multiple dentigerous cysts evaluated by cone beam computed tomography: a case report on a non-syndromic patient
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Bergamini, Mariana Lobo

; Sanches, Guilherme Trafani

; Pina, Paulo Sergio Souza

; D’Avila, Ricardo Pimenta

; Canto, Alan Motta do

; Ogawa, Celso Massahiro

; Braz-Silva, Paulo Henrique

; Costa, Andre Luiz Ferreira

Brazilian Journal of Otorhinolaryngology

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feb 2021, Volume 87 N. 1 Pages 110 - 113

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

https://doi.org/10.1016/j.bjorl.2020.05.016 184 downloads

Comparative Study between Scales: Subjective Elbow Value and Patient-rated Tennis Elbow Evaluation Applied to Patients Affected by Lateral Epicondylitis
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Ikemoto, Roberto Yukio

; Almeida, Luiz Henrique Oliveira Motta, Giovanna Galvão Braga Kim, Alexandre Se Moo Lial, Carlos Vitor Nunes Claros, Johny James

Revista Brasileira de Ortopedia

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oct 2020, Volume 55 N. 5 Pages 564 - 569

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Objetivo Avaliar se a aplicação das escalas subjective elbow value (SEV) e Patient-rated Tennis Elbow Evaluation (PRTEE) apresentam resultados similares na avaliação de pacientes com epicondilite lateral do cotovelo. Métodos Trinta e sete indivíduos com diagnostic de epicondilite lateral do cotovelo foram avaliados no ambulatório de cirurgia do ombro e cotovelo do nosso hospital. O diagnóstico foi realizado com a história clínica da patologia, exame físico, raio-x, e ultrassonográfia. Foram utilizadas as escalas SEV e PRTEE, e os resultados foram comparados estatisticamente, usando-se como nível de significância 5% (p ≥ 0,05). Resultados Encontramos uma relação estatisticamente significante entre os valores obtidos pelas escalas SEV e PRTEE quando aplicadas no grupo de pacientes portadores de epicondilite lateral (p= 0,017). Conclusão Subjective elbow value apresentou resultados similares ao PRTEE na avaliação de pacientes com diagnóstico de epicondilite lateral do cotovelo.

Abstract Objective To verify if the subjective elbow value (SEV) scale presents similar results to those of the Patient-rated Tennis Elbow Evaluation (PRTEE) scale in the evaluation of patients with lateral elbow epicondylitis (LEE). Methods Thirty-seven patients were diagnosed with LEE in the outpatient service of our hospital through clinical history, physical examination, X-ray, and ultrasonography. The SEV and PRTEE scales were used and their results were compared using a significance level ≥ 5% (p ≥0.05). Results A statistically significant relationship was found between the values of SEV and PRTEE in the group of patients studied (p= 0.017). Conclusion Subjective elbow value presented similar results to PRTEE in the evaluation of patients with diagnosis of LEE.

https://doi.org/10.1055/s-0039-3402465 1142 downloads

Epidemiologia e desfecho dos pacientes de alto risco cirúrgico admitidos em unidades de terapia intensiva no Brasil
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Silva Júnior, João Manoel

; Chaves, Renato Carneiro de Freitas

; Corrêa, Thiago Domingos

; Assunção, Murillo Santucci Cesar de

; Katayama, Henrique Tadashi

; Bosso, Fabio Eduardo

; Amendola, Cristina Prata

; Serpa Neto, Ary

; Malbouisson, Luiz Marcelo Sá

; Oliveira, Neymar Elias de

; Veiga, Viviane Cordeiro Rojas, Salomón Soriano Ordinola Postalli, Natalia Fioravante Alvarisa, Thais Kawagoe Lucena, Bruno Melo Nobrega de Oliveira, Raphael Augusto Gomes de Sanches, Luciana Coelho Silva, Ulysses Vasconcellos de Andrade e Nassar Junior, Antonio Paulo Réa-Neto, Álvaro Amaral, Alexandre Teles, José Mário Freitas, Flávio Geraldo Rezende de Bafi, Antônio Tonete Pacheco, Eduardo Souza Ramos, Fernando José Vieira Júnior, José Mauro Pereira, Maria Augusta Santos Rahe Schwerz, Fábio Sartori Menezes, Giovanna Padoa de Magalhães, Danielle Dourado Castro, Cristine Pilati Pileggi Henrich, Sabrina Frighetto Toledo, Diogo Oliveira Parra, Bruna Fernanda Camargo Silva Dias, Fernando Suparregui Zerman, Luiza Formolo, Fernanda Nobrega, Marciano de Sousa Piras, Claudio Piras, Stéphanie de Barros Conti, Rodrigo Bittencourt, Paulo Lisboa D’Oliveira, Ricardo Azevedo Cruz Estrela, André Ricardo de Oliveira Oliveira, Mirella Cristine de Reese, Fernanda Baeumle Motta Júnior, Jarbas da Silva Câmara, Bruna Martins Dzivielevski da David-João, Paula Geraldes Tannous, Luana Alves Chaiben, Viviane Bernardes de Oliveira Miranda, Lorena Macedo Araújo Brasil, José Arthur dos Santos Deucher, Rafael Alexandre de Oliveira Ferreira, Marcos Henrique Borges Vilela, Denner Luiz Almeida, Guilherme Cincinato de Nedel, Wagner Luis Passos, Matheus Golenia dos Marin, Luiz Gustavo Oliveira Filho, Wilson de Coutinho, Raoni Machado Oliveira, Michele Cristina Lima de Friedman, Gilberto Meregalli, André Höher, Jorge Amilton Soares, Afonso José Celente Lobo, Suzana Margareth Ajeje

Revista Brasileira de Terapia Intensiva

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mar 2020, Volume 32 N. 1 Pages 17 - 27

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Objetivo: Definir o perfil epidemiológico e os principais determinantes de morbimortalidade dos pacientes cirúrgicos não cardíacos de alto risco no Brasil. Métodos: Estudo prospectivo, observacional e multicêntrico. Todos os pacientes cirúrgicos não cardíacos admitidos nas unidades de terapia intensiva, ou seja, considerados de alto risco, no período de 1 mês, foram avaliados e acompanhados diariamente por, no máximo, 7 dias na unidade de terapia intensiva, para determinação de complicações. As taxas de mortalidade em 28 dias de pós-operatório, na unidade de terapia intensiva e hospitalar foram avaliadas. Resultados: Participaram 29 unidades de terapia intensiva onde foram realizadas cirurgias em 25.500 pacientes, dos quais 904 (3,5%) de alto risco (intervalo de confiança de 95% - IC95% 3,3% - 3,8%), tendo sido incluídos no estudo. Dos pacientes envolvidos, 48,3% eram de unidades de terapia intensiva privadas e 51,7% de públicas. O tempo de internação na unidade de terapia intensiva foi de 2,0 (1,0 - 4,0) dias e hospitalar de 9,5 (5,4 - 18,6) dias. As taxas de complicações foram 29,9% (IC95% 26,4 - 33,7) e mortalidade em 28 dias pós-cirurgia 9,6% (IC95% 7,4 - 12,1). Os fatores independentes de risco para complicações foram Simplified Acute Physiology Score 3 (SAPS 3; razão de chance − RC = 1,02; IC95% 1,01 - 1,03) e Sequential Organ Failure Assessment Score (SOFA) da admissão na unidade de terapia intensiva (RC =1,17; IC95% 1,09 - 1,25), tempo de cirurgia (RC = 1,001; IC95% 1,000 - 1,002) e cirurgias de emergências (RC = 1,93; IC95% 1,10 - 3,38). Em adição, foram associados com mortalidade em 28 dias idade (RC = 1,032; IC95% 1,011 - 1,052) SAPS 3 (RC = 1,041; IC95% 1,107 - 1,279), SOFA (RC = 1,175; IC95% 1,069 - 1,292) e cirurgias emergenciais (RC = 2,509; IC95% 1,040 - 6,051). Conclusão: Pacientes com escores prognósticos mais elevados, idosos, tempo cirúrgico e cirurgias emergenciais estiveram fortemente associados a maior mortalidade em 28 dias e mais complicações durante permanência em unidade de terapia intensiva.

ABSTRACT Objective: To define the epidemiological profile and the main determinants of morbidity and mortality in noncardiac high surgical risk patients in Brazil. Methods: This was a prospective, observational and multicenter study. All noncardiac surgical patients admitted to intensive care units, i.e., those considered high risk, within a 1-month period were evaluated and monitored daily for a maximum of 7 days in the intensive care unit to determine complications. The 28-day postoperative, intensive care unit and hospital mortality rates were evaluated. Results: Twenty-nine intensive care units participated in the study. Surgeries were performed in 25,500 patients, of whom 904 (3.5%) were high-risk (95% confidence interval - 95%CI 3.3% - 3.8%) and were included in the study. Of the participating patients, 48.3% were from private intensive care units, and 51.7% were from public intensive care units. The length of stay in the intensive care unit was 2.0 (1.0 - 4.0) days, and the length of hospital stay was 9.5 (5.4 - 18.6) days. The complication rate was 29.9% (95%CI 26.4 - 33.7), and the 28-day postoperative mortality rate was 9.6% (95%CI 7.4 - 12.1). The independent risk factors for complications were the Simplified Acute Physiology Score 3 (SAPS 3; odds ratio - OR = 1.02; 95%CI 1.01 - 1.03) and Sequential Organ Failure Assessment Score (SOFA) on admission to the intensive care unit (OR = 1.17; 95%CI 1.09 - 1.25), surgical time (OR = 1.001, 95%CI 1.000 - 1.002) and emergency surgeries (OR = 1.93, 95%CI, 1.10 - 3.38). In addition, there were associations with 28-day mortality (OR = 1.032; 95%CI 1.011 - 1.052), SAPS 3 (OR = 1.041; 95%CI 1.107 - 1.279), SOFA (OR = 1.175, 95%CI 1.069 - 1.292) and emergency surgeries (OR = 2.509; 95%CI 1.040 - 6.051). Conclusion: Higher prognostic scores, elderly patients, longer surgical times and emergency surgeries were strongly associated with higher 28-day mortality and more complications during the intensive care unit stay.

https://doi.org/10.5935/0103-507x.20200005 1048 downloads

Individual biosafety barrier in dentistry: an alternative in times of covid-19. Preliminary study
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MONTALLI, Victor Angelo Martins

; GARCEZ, Aguinaldo Silva

; MONTALLI, Gabriel Angelo Martins

; FRANÇA, Fabiana Mantovani Gomes

; SUZUKI, Selly Sayuri

; MIAN, Letícia Marques Tondini

; MOTTA, Rogério Heládio Lopes

; NAPIMOGA, Marcelo Henrique

; JUNQUEIRA, José Luiz Cintra

RGO - Revista Gaúcha de Odontologia

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2020, Volume 68 elocation e20200088

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO A retomada às atividades odontológicas em tempos de pandemia tem sido um desafio devido à geração e dispersão de gotículas e aerossóis que podem conter o vírus SARS-CoV-2, agente etiológico da covid-19. Nos últimos meses algumas estratégias de contenção de gotículas e aerossóis tem circulado pela internet, mas a eficácia destas barreiras ainda não apresenta um bom nível de evidência na Literatura. Desta forma, e utilizando um modelo de dispersão microbiana, o objetivo deste estudo preliminar foi comparar a dispersão da alta rotação (AR) sem ou associada a uma barreira individual de biossegurança odontológica (AR / BIBO) que consiste em um bastidor acoplado ao filme de PVC e TNT. A turbina da alta rotação foi ativada durante um minuto em uma solução de Lactobacillus casei Shirota, a qual havia sido previamente acrescentada no reservatório de refrigeração de um equipamento odontológico, e placas de petri contendo ágar MRS foram posicionadas a partir do apoio de cabeça de uma cadeira odontológica nas distâncias de 50, 100 e 150 cm em diferentes ângulos (90 e 0 graus). Na distância de 50 cm, a média (desvio padrão) de L. casei Shirota para AR foi de 13.554,59 (493,48) UFC, enquanto a associação AR/BIBO foi de 570,67 (60,54) UFC, estabelecendo uma redução de 96% (p<0,0001). Considerando estes resultados preliminares e o modelo de estudo utilizado, a barreira individual de biossegurança odontológica se mostrou eficiente em reduzir a dispersão da turbina de alta rotação, o que sugere que o seu uso pode ser uma alternativa para a melhoria da biossegurança em ambiente odontológico.

ABSTRACT The return to dental practice in pandemic times is a new challenge due to the generation and dispersion of droplets and aerosols that may contain the SARS-CoV-2 virus, the etiological agent of covid-19. In the last months some droplet and aerosol containment strategies have been circulating on the internet, however, until now there is no evidence in the literature to prove the effectiveness of such barriers. Thus, using a microbial dispersion model with the fast handpiece, the aim of this preliminary study was to compare the dispersion caused by the the dental drill (DD) alone or in association with an individual biosafety barrier (IDBD / DD), which consisted of a layer of PVC film combined to a layer of polypropylene mounted on a frame. The dental drill was activated for one minute having had the water from the reservoir been replaced with a suspension of Lactobacillus casei Shirota. Petri dishes containing MRS agar were positioned at 50, 100 and 150 cm from the headboard of the dental chair at different angles (90 and 0 degrees). At 50 cm, the mean (standard deviation) of L. casei Shirota for DD was 13,554.59 (493.48) CFU, while for IDBD / DD was 570.67 (60.54) CFU (p <0.0001), establishing a 96% reduction. Considering these preliminary results, the individual biosafety barrier proved effective in reducing dispersion from the dental drill in this study model, which suggests that this barrier may be a viable option to optimize biosafety in the dental environment.

https://doi.org/10.1590/1981-863720200001820200088 4354 downloads

Chlamydia trachomatis asymptomatic urethritis recurrence among males living with HIV-1
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Silva, Guilherme Almeida Rosa da Motta, Heloisa Loureiro de Sá Neves Souza, Erik Friedrich Alex de Cardoso, Pedro Afonso Nogueira Moises Pilotto, José Henrique Eyer-Silva, Walter Araujo Ribeiro, Luiz Cláudio Pereira Santos, Mônica Soares dos Azevedo, Marcelo Costa Velho Mendes de Pinto, Jorge Francisco da Cunha Motta, Rogerio Neves Ferry, Fernando Raphael de Almeida

Revista do Instituto de Medicina Tropical de São Paulo

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2018, Volume 60 elocation e65

Abstract: En | Text: En | PDF: En

ABSTRACT A prevalence of 3.47% of asymptomatic Chlamydia trachomatis urethritis has been previously reported among males living with HIV infection in Brazil. This study aims to assess the recurrence of C. trachomatis urethritis three years later in the same cohort of patients and analyze associated risk factors. A total of 115 male patients diagnosed with HIV infection, with no symptoms of urethritis and observed since May of 2015 in followup visits were enrolled. They had urine samplers tested by PCR for C. trachomatis and N. gonorrhoeae between February and March 2018. Results: Three of the four patients who had asymptomatic C. trachomatis urethritis three years before were recurrently positive for C. trachomatis urethritis. Two new patients were diagnosed as positives, accounting for a total asymptomatic C. trachomatis urethritis prevalence of 4.34%. The prevalence during the whole study was 5.21%. The relative risk for a new urethritis episode among those previously diagnosed with urethritis is RR=41.62 (95% CI: 9.42-183.84), p < 0.01. Patients who presented asymptomatic urethritis anytime and who were recurrently positive for C. trachomatis had a lower mean age (p<0.01). Married individuals were protected regarding asymptomatic urethritis [p<0.01, OR = 0.04 (0.005-0.4)] and had lower risk to develop recurrence [p<0.01, RR = 0.86 (0.74-0.99)]. Illicit drugs users had risk associated to asymptomatic urethritis [p=0.02, OR= 5.9 (1.03-34)] and higher risk to develop recurrence [p<0.01, RR=1.1 (1-1.22)]. Conclusion: The recurrence of asymptomatic C. trachomatis urethritis after treatment among males living with HIV infection in Brazil can be considered high and should not be neglected.

https://doi.org/10.1590/s1678-9946201860065 1339 downloads

Prevalence of asymptomatic urethritis by Chlamydia trachomatis and Neisseria gonorrhoeae and associated risk factors among males living with HIV-1
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Revista do Instituto de Medicina Tropical de São Paulo

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2018, Volume 60 elocation e11

Abstract: En | Text: En | PDF: En

ABSTRACT Objectives The increase in HIV transmissibility in non-ulcerative sexually transmitted infection is already well-established. It is estimated that symptomatic carriers of N. gonorrhoeae and C. trachomatis have a relative risk of 4.8-fold and 3.6-fold, respectively, for the sexual acquisition of HIV. This type of evaluation for asymptomatic urethritis is necessary to reinforce strategies to combat HIV transmission. This study aims to assess the prevalence of patients with asymptomatic urethritis among men diagnosed with HIV-1 and determine the risk factors associated with this infection. Methods We enrolled a total of 115 male patients aged 18 years or older who have been diagnosed with HIV infection and have no symptoms of urethritis or other sexually transmitted infections and who have been evaluated between May and August 2015 in a follow-up visit at the Immunology Outpatient Clinic of a Brazilian University Hospital. Results Four asymptomatic patients were positive for C. trachomatis and were considered asymptomatic carriers of urethritis. Prevalence was 3.47%. Patients who were positive for C. trachomatis urethritis had a lower mean age (p = 0.015). Conclusion The presence of asymptomatic sexually transmitted infection is a challenge in clinical practice. We recommend that, in outpatient practice, the habit of inquiring on previous sexual behavior to obtain more information about risks and associations with asymptomatic sexually transmitted infection, a routine physical examination and complementary tests to detect STI pathogens should be performed to discard these conditions. The development of rapid tests for this purpose should also be encouraged.

https://doi.org/10.1590/s1678-9946201860011 3401 downloads

Comunidade virtual de aprendizagem para professores de Biologia: avaliação da utilização e desafios
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Salvador, Daniel Fábio Ribeiro Rolando, Luiz Gustavo Motta Pinto da Luz, Mauricio Roberto Silva Sousa, André Henrique

Revista electrónica de investigación en educación en ciencias

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jul 2017, Volume 12 N. 1 Pages 12 - 22

This paper aims to describe an experience of using a virtual community for biology teachers throughout a three-year period. We analyzed the visualization and distribution of the participations in the tools available for collaboration and sharing, as well as presenting results of the construction of biological knowledge by teachers. There was a large difference in favor of total visualizations in relation to participations, which seems to be a common and recurring factor in virtual learning communities (VLC) over time. There was a great diversity of topics discussed related to the biology content. Participants used more frequently collaboration tools than sharing tools. The Message tool, posted in pre-existing discussion spaces, was the preferred one. A total of 1021 different collaborative areas were created, most of which using the Forum tool, but fewer than 20% of those initiatives were successful in terms of participation. Among the discussions with participation, there is evidence of the creation of a collaborative construction of knowledge community, to the extent that there were collaboration and sharing of biological knowledge with the construction of shared meanings achieved through group interaction. In the sharing tools, there was a total of 3402 participations, most of them Photos, representing the second tool with the highest percentage of participation (19.6%), followed by Link and Video, with respectively 15.1% and 4.2%. The results of the study points out that new ways of organizing, guiding and moderating the use of VLC tools by its members should be further studied and implemented so that the construction of biological knowledge may takes place in a more lasting, spontaneous and permanent way.

Cette étude présente une expérience de 3 ans d'utilisation d'une communauté virtuelle dédiée aux enseignants em biologie. Nous avons analysé la visualisation et la distribution des participants em fonction des outils disponibles de collaboration et partage, outre la présentation de résultats relatifs à l'élaboration des connaissances en biologie développée par les enseignants. Le total de visualisations a amplement dépassé celui des participations, ce qui semble être un point commun et récurrent aux communautés virtuelles d'apprentissage au fil du temps. Le choix des thèmes discutés en ce qui concerne l'enseignement en biologie a fait preuve d'une grande diversité. Les participants ont utilisé un plus grand nombre d'outils de collaboration que de partage. L'outil message, employé dans des espaces de discussion préexistants, s'est montré l'outil préférentiel. Ont été créés 1021 différents espaces collaboratifs, la plupart d'entre eux recourant à l'outil Forum, mais moins de 20% de ces initiatives se sont montrées fructueuses en termes de participations. Parmi les discussions avec participation, ont été perçus des indices de création d'une communauté de construction collaborative des connaissances, aux vues de la collaboration et partage de connaissances en biologie avec élaboration de significations partagées résultant de l'interaction entre les groupes. En ce qui concerne les outils de partage, um total de 3402 participations a été observé, principalement des photographies, correspondant au second choix d'outil (19,6% des participations), suivies des liens et vidéos, représentant respectivement 15,1% et 4,2% des participations. Cette étude suggère que l'élaboration des connaissances en biologie de manière plus durable, spontanée et permanente nécessite que de nouvelles formes d'organiser, directioner et modérer l'usage des outils par les participants soient développées et proposées.

Comunidad de aprendizaje virtual para profesores de biología

O estudo apresenta uma experiência de utilização ao longo de 3 anos de uma comunidade virtual para professores de Biologia. Analisamos a visualização e distribuição das participações em relação às ferramentas disponíveis para colaboração e compartilhamento, além de apresentarmos resultados sobre a construção do conhecimento biológico pelos professores. Observou-se grande diferença a favor do total de visualizações em relação as participações, o que parece ser fator comum e recorrente em comunidades virtuais de aprendizagem (CVAs) ao longo do tempo. Houve uma grande diversidade de temas discutidos relacionados ao ensino de biologia. Os participantes usaram mais ferramentas de colaboração do que de compartilhamento. A ferramenta mensagem, postadas em espaços de discussão pré-existentes, foi a preferencial. Foram criados 1021 diferentes espaços colaborativos, a maioria utilizando a ferramenta Fórum, porém menos 20% destas iniciativas tiveram sucesso em termos de participação. Dentre as discussões com participação, existem indícios da criação de uma comunidade de construção colaborativa do conhecimento, na medida que houve a colaboração e compartilhamento de conhecimento biológico com construção de significados compartilhados obtidos por interações entre grupos. Nas ferramentas de compartilhamento houve um total de 3402 participações, a maioria Fotos, representando a segunda ferramenta com maior percentual da participação (19,6%), seguida de Link e Vídeo, com respectivamente 15,1% e 4,2%. O estudo aponta que novas formas de organizar, direcionar e moderar o uso das ferramentas de uma CVA por seus membros devem ser estudadas e propostas para que a construção do conhecimento biológico aconteça de forma mais duradoura, espontânea e permanente.

Visual Experimental and Numerical Investigations around the VLM-1 Microsatellite Launch Vehicle at Transonic Regime
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Mata, Henrique Oliveira da Falcão Filho, João Batista Pessoa Avelar, Ana Cristina Carvalho, Leonardo Motta Maia de Oliveira Azevedo, João Luiz F.

Journal of Aerospace Technology and Management

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jun 2017, Volume 9 N. 2 Pages 179 - 192

Abstract: En | Text: En | PDF: En

ABSTRACT: It is performed and presented an experimental and numerical investigation over the flow patterns around the fore-body section of a microsatellite launch vehicle in development at Instituto de Aeronáutica e Espaço. The experimental investigation with a VLM-1 model in 1:50 scale is carried out at the Brazilian Pilot Transonic Wind Tunnel, located in the Aerodynamics Division of the mentioned Institute, using the classical schlieren flow visualization technique. Schlieren images are obtained for nominal Mach number varying from 0.9 to 1.01. Numerical simulation using Stanford's SU2 code is conducted together with the experimental investigation in order to improve the understanding of the complex physical phenomena associated with the experimental results of this particular regime. The combination of the 2 techniques allowed the assessment of some important aspects on the flow field around the vehicle in the conditions considered in this study, such as shock wave/boundary-layer interaction. The numerical simulation is also very important, allowing the quantification of some important parameters and confirming the shock wave formation patterns observed in the simulation when compared with the schlieren images. A good agreement regarding the position of the shock wave, when compared with the schlieren images, with a maximum error of about 6%, is observed over the VLM model.

https://doi.org/10.5028/jatm.v9i2.676 1395 downloads

10.

Transmissão da doença de Chagas por consumo de carne de caça: revisão sistemática
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Sangenis, Luiz Henrique Conde Nielebock, Marco Antonio Prates Santos, Ceumara da Silva Silva, Mateus Curty Carriello da Bento, Glauber Motta Ribeiro

Revista Brasileira de Epidemiologia

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dec 2016, Volume 19 N. 4 Pages 803 - 811

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO: Objetivo: Avaliar a influência do consumo de carne de caça na transmissão da doença de Chagas (DC), assim como as condições em que ela ocorre e a frequência de relatos na literatura. Métodos: Mediante revisão sistemática, foram consultadas as bases PubMed, LILACS, MEDLINE e SciELO, sendo incluídos artigos escritos em português, inglês e espanhol, sem limitação do ano de publicação. Os descritores utilizados foram: oral, transmission, meat, wild animals, hunt, carnivory e Chagas disease, sendo inseridos na análise os artigos que mencionavam o consumo de carne de animais como forma de transmissão humana da DC. Foram utilizados critérios de evidência epidemiológico, clínico e laboratorial. Resultados: Entre os 298 artigos identificados, apenas seis preencheram os critérios de elegibilidade. Foram identificados somente cinco episódios de transmissão oral por consumo de carne ou sangue de animais silvestres, porém em dois deles não foi possível afastar a possibilidade de transmissão vetorial. A maior parte dos relatos preencheu os critérios de evidência epidemiológico, clínico e laboratorial, estabelecidos para sustentar a transmissão. Conclusão: Apesar da transmissão de DC ser incomum, a caça e o consumo de mamíferos silvestres reservatórios devem ser desestimulados nos países endêmicos em função dos riscos inerentes a essas práticas.

ABSTRACT: Objective: To evaluate the influence of game meat consumption in Chagas disease (CD) transmission, the conditions under which it occurs and the frequency of reports in the literature. Methods: Through systematic review, databases PubMed, LILACS, MEDLINE, and SciELO were consulted, and articles written in Portuguese, English, and Spanish were included, with no limitation over publication date. We used the following descriptors: oral, transmission, meat, wild animals, hunt, carnivory, and Chagas disease. Articles that mentioned consumption of animal meat as a form of human transmission of CD were included. We used epidemiological, clinical, and laboratory evidence criteria to confirm cases. Results: Among the 298 articles identified, only six met the eligibility criteria. Only five episodes of oral transmission through wild animal meat or blood consumption were identified. However, in two of them, the possibility of vectorial transmission could not be ruled out. Most reports met the epidemiological, clinical, and laboratory evidence criteria established to support the transmission. Conclusion: Though CD transmission is uncommon, hunting and consumption of wild mammals that serve as Trypanosoma cruzi reservoirs should be discouraged in endemic countries in light of the risks inherent to these practices.

https://doi.org/10.1590/1980-5497201600040010 9360 downloads

11.

Transmissão da doença de Chagas por consumo de carne de caça: revisão sistemática
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Sangenis, Luiz Henrique Conde Nielebock, Marco Antonio Prates Santos, Ceumara da Silva Silva, Mateus Curty Carriello da Bento, Glauber Motta Ribeiro

Revista Brasileira de Epidemiologia

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dec 2016, Volume 19 N. 4 Pages 803 - 811

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

https://doi.org/10.1590/1980-5497201600040010

12.

Severe fat embolism in perioperative abdominal liposuction and fat grafting
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Souza, Rodrigo de Lima e Apgaua, Bruno Tavares Milhomens, João Daniel Albuquerque, Francisco Tadeu Motta Carneiro, Luiz Antônio Mendes, Márcio Henrique Garcia, Tiago Carvalho Paiva, Clerisson Ladeia, Felipe Jeunon, Deiler Célio

Revista Brasileira de Anestesiologia

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jun 2016, Volume 66 N. 3 Pages 324 - 328

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO JUSTIFICATIVA E OBJETIVOS: A Síndrome da Embolia Gordurosa (SEG) pode acontecer em pacientes vítimas de politrauma (fratura de ossos longos) ou operações plásticas (lipoaspiração), comprometendo circulação, respiração e/ou sistema nervoso central. O presente relato mostra evolução de SEG grave após lipoaspiração e lipoenxertia. RELATO DO CASO: SSS, 42 anos, ASA 1, sem fatores de risco para trombose, candidata a lipoaspiração abdominal e implante de prótese mamária. Submetida à anestesia geral balanceada com monitorização básica e ventilação controlada. Após 45 minutos de procedimento, houve queda súbita e progressiva da capnometria, hipoxemia e hipotensão grave. Imediatamente foi monitorizada com PAM e cateter central, tratada com vasopressores, inotrópicos e infusão de cristaloides, obtendo estabilização do quadro. Amostra sanguínea arterial mostrou pH = 7,21; PCO2 = 51 mmHg; PO2 = 52 mmHg; BE = -8; HCO3 = 18 mEQ/l e lactato = 6,0 mmol/l. Ecocardiograma transtorácico mostrou PSAP = 55 mmHg, VD hipocontrátil e FEVE = 60%. Diagnóstico de embolia pulmonar. Após24 h de tratamento intensivo, a paciente evoluiu com anisocoria e coma com escala de glasgow 3. Realizada TC de encéfalo que evidenciou isquemia cerebral grave, hemisférica, com sinais de êmbolos de gordura em A. cerebral média D; o ecocardiograma transesofágico mostrou forame oval patente. Finalmente, após 72 h de evolução, a paciente evoluiu para morte encefálica. CONCLUSÃO: A SEG ocorre geralmente em jovens. O tratamento baseia-se principalmente na infusão de líquidos e drogas vasoativas, ventilação mecânica e correção do fator desencadeante (fixação precoce de fraturas ou suspensão da lipoaspiração). O comprometimento multiorgânico indica pior prognóstico.

ABSTRACT BACKGROUND AND OBJECTIVES: Fat embolism syndrome may occur in patients suffering from multiple trauma (long bone fractures) or plastic surgery (liposuction), compromising the circulatory, respiratory and/or central nervous systems. This report shows the evolution of severe fat embolism syndrome after liposuction and fat grafting. CASE REPORT: SSS, 42 years old, ASA 1, no risk factors for thrombosis, candidate for abdominal liposuction and breast implant prosthesis. Subjected to balanced general anesthesia with basic monitoring and controlled ventilation. After 45 min of procedure, there was a sudden and gradual decrease of capnometry, severe hypoxemia and hypotension. The patient was immediately monitored for MAP and central catheter, treated with vasopressors, inotropes, and crystalloid infusion, stabilizing her condition. Arterial blood sample showed pH = 7.21; PCO2 = 51 mmHg; PO2 = 52 mmHg; BE = -8; HCO3 = 18 mEq L-1, and lactate = 6.0 mmol L-1. Transthoracic echocardiogram showed PASP = 55 mmHg, hypocontractile VD and LVEF = 60%. Diagnosis of pulmonary embolism. After 24 h of intensive treatment, the patient developed anisocoria and coma (Glasgow coma scale = 3). A brain CT was performed which showed severe cerebral hemispheric ischemia with signs of fat emboli in right middle cerebral artery; transesophageal echocardiography showed a patent foramen ovale. Finally, after 72 h of evolution, the patient progressed to brain death. CONCLUSION: Fat embolism syndrome usually occurs in young people. Treatment is based mainly on the infusion of fluids and vasoactive drugs, mechanical ventilation, and triggering factor correction (early fixation of fractures or suspension of liposuction). The multiorgânico involvement indicates a worse prognosis.

https://doi.org/10.1016/j.bjane.2013.11.006 5244 downloads

13.

A ideologia em Althusser e Laclau: diálogos (im)pertinentes
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Motta, Luiz Eduardo Serra, Carlos Henrique Aguiar

Revista de Sociologia e Política

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jun 2014, Volume 22 N. 50 Pages 125 - 147

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

A teoria política de Ernesto Laclau é uma das principais referências no campo da Ciência Política ao debate sobre o populismo e a democracia contemporânea, além de sua contribuição ao conceito de ideologia e na análise de discurso. Contudo, os estudos sobre este autor não têm explorado a influência do marxismo, sobretudo de Louis Althusser, em sua obra. O objetivo deste trabalho é resgatar essa influência e apontar o diálogo entre esses dois autores, tendo como elo os conceitos (que possuem certa ligação com a psicanálise de Lacan) de ideologia e sobredeterminação, além da questão da contingência que se tornou um dos aspectos mais relevantes na obra de ambos os autores a partir da década de 1980. Para compreendermos a contribuição de Althusser e Laclau ao conceito de ideologia, analisamos dois eixos: (i) o primeiro trata da inovação que Althusser dá a esse conceito ao situá-lo no plano das relações imaginárias e na definição de sujeito descentrado; (ii) em seguida, a contribuição de Laclau a partir dos pressupostos althusserianos, dando uma nova definição à ideologia populista-nacionalista, e a redefinição de sua teoria ao privilegiar o conceito de discurso em substituição ao de ideologia. Na conclusão apontamos que o conceito de ideologia de Althusser demonstra ter mais precisão conceitual por ser definido como uma prática articulada a outras práticas distintamente da concepção discursiva (e reducionista) defendida posteriormente por Laclau. Percebemos, portanto, que a teoria da ideologia de Althusser mantém-se atual no campo do pensamento crítico, não somente no que concerne aos aspectos reprodutores, mas também transformadores das relações de poder.

The political theory of Ernesto Laclau is a major reference in the field of political science to the debate on contemporary populism and democracy, as well as its contribution to the concept of ideology and discourse analysis. However, studies of this author have not explored the influence of Marxism, especially Louis Althusser in his work. The objective of this work is to rescue this influence and point the dialogue between these two authors, whose link concepts (which have some connection with Lacan's psychoanalysis) of ideology and overdetermination, beyond the issue of contingency that has become one of the most relevant to the work of both authors from the 1980s. To understand the contribution of Althusser and Laclau to analyze the concept of ideology on two axes: the first deals with the innovation that Althusser calls this concept to situate it in terms of imaginary relationships, and the definition of the decentered subject, then the contribution Laclau's from the assumptions Althusserians giving a new definition to the populist-nationalist ideology, and the redefinition of his theory by privileging the concept of discourse to replace the ideology. In the conclusion we point out that the concept of ideology Althusser demonstrates more conceptual precision by be defined as a practice distinctly articulated with other practices of discursive conception (and reductionist) subsequently advocated by Laclau. We realize, therefore, that the theory of ideology Althusser remains current in the field of critical thinking, not only in regard to the reproduction aspects, but also the relations of power transformers.

https://doi.org/10.1590/0104-447814225009 24429 downloads Cited 3 times in SciELO

14.

Implante coclear em paciente com síndrome de Susac
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Lavinsky, Luiz Scarton, Fabiana Lavinsky-Wolff, Michelle Lavinsky, Joel Motta, Luís Henrique

Brazilian Journal of Otorhinolaryngology

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dec 2012, Volume 78 N. 6 Pages 123 - 123

Abstract: Pt | Text: Pt | PDF: Pt

https://doi.org/10.5935/1808-8694.20120045 2251 downloads

15.

Manipulação da altura de corte da planta de milho (Zea mays, L.) para ensilagem visando a produção do novilho superprecoce
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Restle, João Neumann, Mikael Brondani, Ivan Luiz Pascoal, Leonir Luiz Silva, José Henrique Souza da Pellegrini, Luiz Giovani de Souza, Alexandre Nunes Motta de

Revista Brasileira de Zootecnia

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jun 2002, Volume 31 N. 3 Pages 1235 - 1244

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O experimento foi conduzido com o objetivo de avaliar o desempenho de bezerros de corte terminados em confinamento, alimentados com silagem do híbrido de milho AG-5011 colhida a alturas de corte diferenciadas: cortes baixo (20 cm) e alto (42 cm). Foram utilizados 12 bezerros Braford com idade média de sete meses e peso médio inicial de 209 kg. O confinamento compreendeu um período total de 126 dias, sendo subdividido em dois períodos de avaliação de 63 dias, em que a relação volumoso:concentrado foi de 60:40 e 50:50para o primeiro período e segundo períodos de confinamento, respectivamente. A silagem obtida com corte alto apresentou maior DIVMO (66,67 contra 58,60%) e menor concentração de FDN (41,47 contra 47,80%). Houve interação entre altura de corte e período de avaliação para os consumos diários de matéria seca (CMS) e de energia digestível (CED) expresso em porcentagem do peso vivo e por unidade tamanho metabólico, ganho de peso médio diário (GMD), conversão alimentar (CA) e eficiência energética (CE). Animais que tiveram incluída à dieta alimentar silagem de corte alto, na primeira fase de confinamento, apresentaram maior GMD (1,352 contra 1,198 kg) e melhor CA (4,82 contra 5,39 kg de MS/kg de ganho de peso) frente à silagem de corte baixo. No entanto, com a redução da relação volumoso:concentrado na segunda fase para 50:50, o GMD (1,228 contra 1,336 kg) e CA (6,43 contra 6,34 kg de MS/kg de ganho de peso) foram similares. Os pesos de abate, de carcaça fria, o rendimento de carcaça fria e a espessura de gordura das carcaças foram similares, sendo, respectivamente, 371,8 kg; 195,3 kg; 52,46%; e 5,7 mm para o corte alto e 368,2 kg; 195,7 kg; 53,08%; e 3,7 mm para o corte baixo.

The experiment was conducted with the objective to evaluate the performance of feedlot finished calves, fed with silages of AG-5011 corn hybrid harvested with different cutting height: low cut (20 cm) and high cut (42 cm). Twelve Braford calves with an average age of seven months and average live weight of 209 kg, were used. The feedlot period was 126 days, divided in two periods of the 63 days. The roughage:concentrate ratio was 60:40 and 50:50 for the first and second periods, respectively. The high cut silage showed higher IVOMD (66.67 vs 58.60%) and lower NDF (41.47 vs 47.80%). Significant interaction was observed between cutting height and evaluation period for dry matter intake (DMI) expressed per 100 kg of live weight and per unit of metabolic weight, digestible energy intake (DEI), weight gain (ADG), feed conversion (FC) and energy efficiency (EE). Animals fed with the high cut silage during the first period presented higher ADG (1.352 vs 1.198 kg) and better FC (4.82 vs 5.39 kg of DM/kg LW) than animals fed with the low cut silage. However, with the reduction of the roughage:concentrate ratio to 50:50 during the second period, the ADG (1.228 vs 1.336 kg) and FC (6.43 vs 6.34 kg of DM/kg LW) were similar. Slaughter and cold carcass weight, dressing percentage and subcutaneous fat thickness were similar, being, respectively, 371.8 kg; 195.3 kg; 52.46%; and 5.7 mm for the higher cut and 368.2 kg; 195.7 kg; 53.08%; and 3.7 mm for the lower cut.

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