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Abstract Introduction: patients with COVID-19 undergo changes in leukocyte count, respiratory disorders, and an increase in inflammatory substances. To improve the inflammatory condition, some nutrients can be used, including arginine, omega-3 fatty acids and nucleotides. This study aims to evaluate how oral immunonutrient supplements affects serum C-reactive protein (CRP) levels and lymphocyte count in patients with COVID-19. Methods: in this double-blind clinical trial, we randomized 43 adult patients with COVID-19 to receive a standard high-protein normocaloric supplement (control) or an immunonutrient-enriched supplement (experiment) for 7 days. The primary outcome was to evaluate changes in total lymphocyte count and serum level of CRP. The assessment of risk and nutritional status of these patients was also performed. Results: forty-three patients with mean age of 41.5 (± 1.8) years were followed up, 39.5 % of them women. The mean body mass index was 27.6 (± 0.8) kg/m² and 58.1 % had low nutritional risk. In the experiment group, there was a CRP reduction of 23.6 (± 7.5) mg/L, while in the control branch the decrease was 14.8 (± 12.1) mg/L (p = 0.002). There was an increase in lymphocytes in the experiment group (+367.5 ± 401.8 cells/mm³) and a reduction in the control group (-282.8 ± 327.8 cells/mm³), although there was no statistical significance (p = 0.369). Relative risk (RR) of treatment in reducing CRP by 30 % or more was 4.45 (p < 0.001; 95 % CI, 1.79-11.07). RR in increasing lymphocyte count by 30 % or more was 1.28 (p = 0.327; 95 % CI, 0.67-2.45). Conclusion: we conclude that immunonutrient supplements seem to reduce CRP levels more than standard high-protein normocaloric supplements.

Resumen Introducción: los pacientes con COVID-19 sufren cambios en el recuento de leucocitos, trastornos respiratorios y aumento de sustancias inflamatorias. Para mejorar la condición inflamatoria se pueden usar algunos nutrientes, como la arginina, los ácidos grasos omega-3 y los nucleótidos. Este estudio tiene como objetivo evaluar cómo los suplementos de inmunonutrientes orales afectan a los niveles séricos de proteína C-reactiva (PCR) y al recuento de linfocitos en pacientes con COVID-19. Métodos: en este ensayo clínico doble ciego, aleatorizamos a 43 pacientes adultos con COVID-19 para recibir un suplemento normocalórico estándar alto en proteínas (control) o un suplemento enriquecido con inmunonutrientes (experimento) durante 7 días. El resultado primario fue evaluar los cambios en el recuento total de linfocitos y el nivel sérico de PCR. También se realizó la evaluación del riesgo y el estado nutricional de estos pacientes. Resultados: cuarenta y tres pacientes con edad media de 41,5 (± 1,8) años fueron seguidos, el 39,5 % de ellos mujeres. El índice de masa corporal medio fue de 27,6 (± 0,8) kg/m² y el 58,1 % tenían bajo riesgo nutricional. En el grupo experimental hubo una reducción de la PCR de 23,6 (± 7,5) mg/L, mientras que en la rama de control la disminución fue de 14,8 (± 12,1) mg/L (p = 0,002). Hubo un aumento de linfocitos en el grupo experimental (+367,5 ± 401,8 células/mm³) y una reducción en el grupo de control (-282,8 ± 327,8 células/mm³), aunque no hubo significación estadística (p = 0,369). El riesgo relativo (RR) del tratamiento para reducir la PCR en un 30 % o más fue de 4,45 (p < 0,001; IC 95 %: 1,79-11,07). El RR en el aumento del recuento de linfocitos en un 30 % o más fue de 1,28 (p = 0,327; IC 95 %: 0,67-2,45). Conclusión: se concluye que los suplementos de inmunonutrientes parecen reducir los niveles de PCR más que los suplementos normocalóricos estándar altos en proteína.

https://doi.org/10.20960/nh.03847

Influence of pupillary dynamics on the defocus curve of eyes implanted with diffractive multifocal lenses: a randomized study
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Messias, André

; Ferreira, Miriam

; Mendonça, Gleilton Carlos

; Queiroz, Wilian

; Coelho, Roberto Pinto

; Gekeler, Katrin

Arquivos Brasileiros de Oftalmologia

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jun 2021, Volume 84 N. 3 Pages 214 - 219

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

RESUMO Objetivo: Avaliar a influência da dinâmica pupilar na curva de desfoco de olhos implantados com lente intraoculares multifocais difrativas. Métodos: Estudo prospectivo e randomizado realizado na Faculdade de Medicina de Ribeirão Preto - Universidade de São Paulo - Departamento de Oftalmologia. Trinta e oito pacientes foram aleatoriamente designados para receber bilateralmente lentes intraoculares SN6AD1 (n=20) (mfIOL) ou SN60WF (n=18) (aIOL). Além da acuidade visual para longe e perto, corrigida e não corrigida, e curva de desfoco, foi ainda realizada pupilometria dinâmica. A área sob a curva de desfoco foi calculada usando um modelo polinomial empírico. Resultados: Um total de 16 e 17 pacientes (n=32 e 34 olhos) completaram 1 ano de seguimento nos grupos mfIOL e aIOL, respectivamente. Não houve diferenças significativas entre grupos para as acuidades visuais seja para longe ou perto. As curvas de desfoco do grupo mfIOL mostraram um pico duplo; enquanto o SN60WF mostrou apenas um pico, típico para uma lente intraoculares monofocal. A média da área sob a curva de desfoco do grupo aIOL foi (4,66 ± 1,51 logMAR.dp), e essa é estatisticamente significante diferente da métrica do grupo mfIOL (1,99 ± 1,31 logMAR.dp). A pupila na contração máxima após a exposição a um flash de 30 cd/m2 por 1 segundo foi significativamente correlacionada com uma melhor área de foco no grupo mfIOL (r=0,54; p=0,0017), essa relação não foi observada para o grupo aIOL. Conclusão: Estes dados indicam que quanto menor a pupila durante contração, melhor é a área sob a curva de desfoco e, portanto, o desempenho visual dos olhos implantados com essa mfIOL. Esta correlação não foi encontrada para lentes intraoculares monofocais.

ABSTRACT Purpose: To evaluate the influence of pupil dynamics on the defocus profile and area-of-focus of eyes implanted with a diffractive multifocal intraocular lens (IOL). Methods: This prospective randomized trial was conducted at the Department of Ophthalmology, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil. Thirty-eight patients were randomly assigned to receive the multifocal SN6AD1 (n=20) or the aspheric monofocal SN60WF (aIOL) (n=18) IOLs bilaterally. Dynamic pupillometry, visual acuity for distance and near, corrected and uncorrected, and a defocus profile were assessed postoperatively. The area-of-focus was calculated using an empirical polynomial model of the defocus profile. Results: Sixteen patients (32 eyes) in the multifocal SN6AD1 group and 17 patients (34 eyes) in the aspheric monofocal SN60WF group completed the 1-year follow-up. There were no significant between-group differences in monocular uncorrected distance or near visual acuity. The defocus profiles of the mfIOL group showed a double peak, whereas those of the aspheric monofocal SN60WF group showed only one peak, which is typical for a monofocal intraocular lens. The area-of-focus of the aIOL group (4.66 ± 1.51 logMARxD) was significantly different from that of the multifocal SN6AD1 (1.99 ± 1.31 logMARxD). Pupil size at maximum contraction after exposure to a flash of 30 cd/m2 for 1 second was significantly correlated with a better area-of-focus in the multifocal SN6AD1 group (r=0.54; p=0.0017), whereas this was not the case in the aspheric monofocal SN60WF group. Conclusion: These findings indicate that in eyes implanted with an multifocal SN6AD1, the smaller the pupil size, the better is the area-of-focus and hence the better is the visual performance. This correlation was not found for the aspheric monofocal SN60WF.

https://doi.org/10.5935/0004-2749.20210029 148 downloads

Costs and outcomes of phacoemulsification for cataracts performed by residents
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Saad Filho, Roberto

; Moreto, Renata

; Nakaghi, Ricardo Okada

; Haddad, William

; Coelho, Roberto Pinto

; Messias, André

Arquivos Brasileiros de Oftalmologia

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jun 2020, Volume 83 N. 3 Pages 209 - 214

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

RESUMO Objetivo: Descrever os custos e resultados da facoemulsificação na cirurgia de catarata realizada por médicos residentes de oftalmologia. Métodos: Foram obtidos prontuários médicos de pacientes operados em 2011 por residentes do terceiro ano (R3) usando facoemulsificação (n=576). Nossa estimativa de despesas incluiu os custos profissionais e hospitalares (taxas, materiais, medicamentos e equipamentos). Os desfechos do estudo incluíram acuidade visual corrigida por óculos pré-operatória e 6 meses após a cirurgia, taxa de complicações intraoperatórias e número total de visitas pós-operatórias. Nós comparamos as variáveis de resultados com procedimentos extracapsulares de extração de catarata (n=274) realizados por residentes R3 em 1997. Resultados: O custo médio da facoemulsificação foi US$ 416, enquanto uma estimativa geral indicou o custo da extração de catarata extracapsular seria de US$ 284 (em 3 de dezembro de 2011). A acuidade visual corrigida por óculos média pré-operatória foi pior na extração de catarata extracapsular (1,73 ± 0,62 logMAR) do que na facoemulsificação (0,74 ± 0,54, p<0,01); a acuidade visual corrigida por óculos média pós-operatória foi melhor na facoemulsificação (0,21 ± 0,36 logMAR) do que na extração de catarata extracapsular (0,63 à facoemulsificação (85%) atingiram acuidade visual corrigida 45% daqueles submetidos à extrações extracapsulares de catarata obtiveram a mesma acuidade visual pós-operatória (p<0,01). A taxa de complicações intraoperatórias foi significativamente maior após extrações de catarata extracapsular (21%) do que após as facoemulsificações (7,6%) (p<0,01) e o número médio de consultas pós-operatórias também foi maior após extração de catarata extracapsular (5,6 ± 2,3) do que após facoemulsificações (4,5 ± 2,4) (p<0,01). Conclusão: Esses dados indicam que a cirurgia de catarata realizada por oftalmologistas em treinamento utilizando facoemulsificação é dispendiosa, mas comparada aos resultados da extração de catarata extracapsular, o ensino da facoemulsificação leva a uma taxa de complicações aproximadamente 3 vezes menor, menor número de consultas pós-operatórias e, mais importante, melhor acuidade visual.

ABSTRACT Purpose: To describe costs and outcomes of phacoemulsification for cataracts performed by ophthalmology residents. Methods: We obtained medical records from patients operated on in 2011 by third year residents (R3) using phacoemulsification (n=576). Our expenses estimation included professionals’ and hospital costs (fees, materials, medications, and equipment). The study outcomes included spectacle-corrected visual acuities before and six months after the operation, rate of intraoperative complications, and total number of postoperative visits. We compared outcome variables with those from extracapsular cataract extraction procedures (n=274) performed by R3 residents in 1997. Results: The mean total cost for phacoemulsification was US$ 416, while an overall estimation indicated the extracapsular cataract extraction cost at US$ 284 (as of December 30, 2011). The mean preoperative spectacle-corrected visual acuity was worse for eyes scheduled for extracapsular cataract extraction (1.73 ± 0.62), than for eyes scheduled for phacoemulsification (0.74 ± 0.54 logMAR) (p<0.01); the mean postoperative visual acuity was better for phacoemulsification (0.21 ± 0.36 logMAR), than for extracapsular cataract extraction (0.63 ± 0.63 logMAR) (p<0.01). Most patients undergoing phacoemulsification (85%) achieved postoperative spectacle-corrected visual acuities ≥0.30 logMAR, while only 45% of those undergoing extracapsular cataract extractions achieved the same postoperative visual acuity (p<0.01). The rate of intraoperative complications was significantly higher after extracapsular cataract extractions (21%) than it was after phacoemulsifications (7.6%) (p<0.01), and the mean number of postoperative visits was also higher after extracapsular cataract extractions (5.6 ± 2.3) than after phacoemulsifications (4.5 ± 2.4) (p<0.01). Conclusion: These data indicate that cataract surgery performed by in-training ophthalmologists using phacoemulsification is expensive, but compared to extracapsular cataract extraction results, teaching phacoemulsification leads to an approximate three-fold lower complication rate, smaller number of postoperative visits and, most importantly, better visual acuities.

https://doi.org/10.5935/0004-2749.20200059 754 downloads

Surface Spectroscopy of Oxisols, Entisols and Inceptisol and Relationships with Selected Soil Properties
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Poppiel, Raúl Roberto

; Lacerda, Marilusa Pinto Coelho

; Oliveira Junior, Manuel Pereira de

; Demattê, José Alexandre Melo

; Romero, Danilo Jefferson

; Sato, Marcus Vinicius

; Almeida Júnior, Leonardo Rafael de

; Cassol, Luiz Felipe Moreira

Revista Brasileira de Ciência do Solo

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2018, Volume 42 elocation e0160519

Abstract: En | Text: En | PDF: En

ABSTRACT: Traditional method of soil survey is expensive, slow, and must be carried out by experienced researchers. Thus, advances in soil observation technologies and the need to obtain information quickly by modern techniques have intensified the use of proximal sensing. This study characterized surface reflectance spectra (A horizon) and related them to traditional soil classification, based on morphological, physical, and chemical properties of representative pedogenetic profiles, developed in two toposequences of the Distrito Federal, Brazil. In the toposequences, 15 soil profiles were selected for a complete morphological description and sampling for laboratory analyses. Soil-landscape relationships were established, and profiles were classified to the fourth level of the Brazilian Soil Classification System (SiBCS). Classes of similar soils were grouped based on their surface spectra, resulting in spectral curves of 10 representative soils in the studied area. The Morphological Interpretation of Reflectance Spectrum (MIRS) and second derivative of the Kubelka-Munk (KM) function were applied to the soil spectra. The clustered soils were similar, mainly in terms of color, textural class, and organic matter content. Groups based on soil physical and chemical properties and on surface and subsurface colors were similar to those determined by surface reflectance. The identification of soil-landscape relationships was fundamental to understand the genesis and distribution of the soils, which had similar chemical and physical properties to their parent materials. The analysis of clusters based on soil surface reflectance proved efficient in determining groups of soil classes with similar properties. Surface reflectance data were related to the soil surface and subsurface properties determined by traditional soil sample analyses, since the two approaches formed similar groups. The simultaneous interaction of soil properties was assessed by MIRS analysis, while the second derivative of the KM function adequately quantified the mineralogy of the spectra.

https://doi.org/10.1590/18069657rbcs20160519 4035 downloads

Recomendações brasileiras de ventilação mecânica 2013. Parte 2
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Barbas, Carmen Sílvia Valente

; Ísola, Alexandre Marini

; Farias, Augusto Manoel de Carvalho

; Cavalcanti, Alexandre Biasi

; Gama, Ana Maria Casati

; Duarte, Antonio Carlos Magalhães

; Vianna, Arthur

; Serpa Neto, Ary

; Bravim, Bruno de Arruda

; Pinheiro, Bruno do Valle

; Mazza, Bruno Franco

; Carvalho, Carlos Roberto Ribeiro de

; Toufen Júnior, Carlos

; David, Cid Marcos Nascimento

; Taniguchi, Corine

; Mazza, Débora Dutra da Silveira

; Dragosavac, Desanka

; Toledo, Diogo Oliveira

; Costa, Eduardo Leite

; Caser, Eliana Bernadete

; Silva, Eliezer

; Amorim, Fabio Ferreira

; Saddy, Felipe

; Galas, Filomena Regina Barbosa Gomes

; Silva, Gisele Sampaio

; Matos, Gustavo Faissol Janot de

; Emmerich, João Claudio

; Valiatti, Jorge Luis dos Santos

; Teles, José Mario Meira

; Victorino, Josué Almeida

; Ferreira, Juliana Carvalho

; Prodomo, Luciana Passuello do Vale

; Hajjar, Ludhmila Abrahão

; Martins, Luiz Claudio

; Malbouisson, Luis Marcelo Sá

; Vargas, Mara Ambrosina de Oliveira

; Reis, Marco Antonio Soares

; Amato, Marcelo Brito Passos

; Holanda, Marcelo Alcântara

; Park, Marcelo

; Jacomelli, Marcia

; Tavares, Marcos

; Damasceno, Marta Cristina Paulette

; Assunção, Murillo Santucci César

; Damasceno, Moyzes Pinto Coelho Duarte

; Youssef, Nazah Cherif Mohamed

; Teixeira, Paulo José Zimmermann

; Caruso, Pedro

; Duarte, Péricles Almeida Delfino

; Messeder, Octavio

; Eid, Raquel Caserta

; Rodrigues, Ricardo Goulart

; Jesus, Rodrigo Francisco de

; Kairalla, Ronaldo Adib

; Justino, Sandra

; Nemer, Sergio Nogueira

; Romero, Simone Barbosa

; Amado, Verônica Moreira

Revista Brasileira de Terapia Intensiva

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sep 2014, Volume 26 N. 3 Pages 215 - 239

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

O suporte ventilatório artificial invasivo e não invasivo ao paciente grave tem evoluído e inúmeras evidências têm surgido, podendo ter impacto na melhora da sobrevida e da qualidade do atendimento oferecido nas unidades de terapia intensiva no Brasil. Isto posto, a Associação de Medicina Intensiva Brasileira (AMIB) e a Sociedade Brasileira de Pneumologia e Tisiologia (SBPT) - representadas por seu Comitê de Ventilação Mecânica e sua Comissão de Terapia Intensiva, respectivamente, decidiram revisar a literatura e preparar recomendações sobre ventilação mecânica, objetivando oferecer aos associados um documento orientador das melhores práticas da ventilação mecânica na beira do leito, com base nas evidências existentes, sobre os 29 subtemas selecionados como mais relevantes no assunto. O projeto envolveu etapas que visaram distribuir os subtemas relevantes ao assunto entre experts indicados por ambas as sociedades, que tivessem publicações recentes no assunto e/ou atividades relevantes em ensino e pesquisa no Brasil, na área de ventilação mecânica. Esses profissionais, divididos por subtemas em duplas, responsabilizaram-se por fazer uma extensa revisão da literatura mundial. Reuniram-se todos no Fórum de Ventilação Mecânica, na sede da AMIB, na cidade de São Paulo (SP), em 3 e 4 de agosto de 2013, para finalização conjunta do texto de cada subtema e apresentação, apreciação, discussão e aprovação em plenária pelos 58 participantes, permitindo a elaboração de um documento final.

https://doi.org/10.5935/0103-507X.20140034 89689 downloads

Recomendações brasileiras de ventilação mecânica 2013. Parte I
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Barbas, Carmen Sílvia Valente

; Ísola, Alexandre Marini

; Farias, Augusto Manoel de Carvalho

; Cavalcanti, Alexandre Biasi

; Gama, Ana Maria Casati

; Duarte, Antonio Carlos Magalhães

; Vianna, Arthur

; Serpa Neto, Ary

; Bravim, Bruno de Arruda

; Pinheiro, Bruno do Valle

; Mazza, Bruno Franco

; Carvalho, Carlos Roberto Ribeiro de

; Toufen Júnior, Carlos

; David, Cid Marcos Nascimento

; Taniguchi, Corine

; Mazza, Débora Dutra da Silveira

; Dragosavac, Desanka

; Toledo, Diogo Oliveira

; Costa, Eduardo Leite

; Caser, Eliana Bernardete

; Silva, Eliezer

; Amorim, Fabio Ferreira

; Saddy, Felipe

; Galas, Filomena Regina Barbosa Gomes

; Silva, Gisele Sampaio

; Matos, Gustavo Faissol Janot de

; Emmerich, João Claudio

; Valiatti, Jorge Luis dos Santos

; Teles, José Mario Meira

; Victorino, Josué Almeida

; Ferreira, Juliana Carvalho

; Prodomo, Luciana Passuello do Vale

; Hajjar, Ludhmila Abrahão

; Martins, Luiz Cláudio

; Malbouisson, Luiz Marcelo Sá

; Vargas, Mara Ambrosina de Oliveira

; Reis, Marco Antonio Soares

; Amato, Marcelo Brito Passos

; Holanda, Marcelo Alcântara

; Park, Marcelo

; Jacomelli, Marcia

; Tavares, Marcos

; Damasceno, Marta Cristina Paulette

; Assunção, Murillo Santucci César

; Damasceno, Moyzes Pinto Coelho Duarte

; Youssef, Nazah Cherif Mohamad

; Teixeira, Paulo José Zimmermann

; Caruso, Pedro

; Duarte, Péricles Almeida Delfino

; Messeder, Octavio

; Eid, Raquel Caserta

; Rodrigues, Ricardo Goulart

; Jesus, Rodrigo Francisco de

; Kairalla, Ronaldo Adib

; Justino, Sandra

; Nemer, Sérgio Nogueira

; Romero, Simone Barbosa

; Amado, Verônica Moreira

Revista Brasileira de Terapia Intensiva

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apr 2014, Volume 26 N. 2 Pages 89 - 121

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

O suporte ventilatório artificial invasivo e não invasivo ao paciente crítico tem evoluído e inúmeras evidências têm surgido, podendo ter impacto na melhora da sobrevida e da qualidade do atendimento oferecido nas unidades de terapia intensiva no Brasil. Isto posto, a Associação de Medicina Intensiva Brasileira (AMIB) e a Sociedade Brasileira de Pneumologia e Tisiologia (SBPT) - representadas pelo seus Comitê de Ventilação Mecânica e Comissão de Terapia Intensiva, respectivamente, decidiram revisar a literatura e preparar recomendações sobre ventilação mecânica objetivando oferecer aos associados um documento orientador das melhores práticas da ventilação mecânica na beira do leito, baseado nas evidencias existentes, sobre os 29 subtemas selecionados como mais relevantes no assunto. O projeto envolveu etapas visando distribuir os subtemas relevantes ao assunto entre experts indicados por ambas as sociedades que tivessem publicações recentes no assunto e/ou atividades relevantes em ensino e pesquisa no Brasil na área de ventilação mecânica. Esses profissionais, divididos por subtemas em duplas, responsabilizaram-se por fazer revisão extensa da literatura mundial sobre cada subtema. Reuniram-se todos no Forum de Ventilação Mecânica na sede da AMIB em São Paulo, em 03 e 04 de agosto de 2013 para finalização conjunta do texto de cada subtema e apresentação, apreciação, discussão e aprovação em plenária pelos 58 participantes, permitindo a elaboração de um documento final.

Perspectives on invasive and noninvasive ventilatory support for critically ill patients are evolving, as much evidence indicates that ventilation may have positive effects on patient survival and the quality of the care provided in intensive care units in Brazil. For those reasons, the Brazilian Association of Intensive Care Medicine (Associação de Medicina Intensiva Brasileira - AMIB) and the Brazilian Thoracic Society (Sociedade Brasileira de Pneumologia e Tisiologia - SBPT), represented by the Mechanical Ventilation Committee and the Commission of Intensive Therapy, respectively, decided to review the literature and draft recommendations for mechanical ventilation with the goal of creating a document for bedside guidance as to the best practices on mechanical ventilation available to their members. The document was based on the available evidence regarding 29 subtopics selected as the most relevant for the subject of interest. The project was developed in several stages, during which the selected topics were distributed among experts recommended by both societies with recent publications on the subject of interest and/or significant teaching and research activity in the field of mechanical ventilation in Brazil. The experts were divided into pairs that were charged with performing a thorough review of the international literature on each topic. All the experts met at the Forum on Mechanical Ventilation, which was held at the headquarters of AMIB in São Paulo on August 3 and 4, 2013, to collaboratively draft the final text corresponding to each sub-topic, which was presented to, appraised, discussed and approved in a plenary session that included all 58 participants and aimed to create the final document.

https://doi.org/10.5935/0103-507X.20140017 321115 downloads

A serological, parasitological and clinical evaluation of untreated Chagas disease patients and those treated with benznidazole before and thirteen years after intervention
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Machado-de-Assis, Girley Francisco

; Diniz, Glaucia Alessio

; Montoya, Roberto Araújo

; Dias, João Carlos Pinto

; Coura, José Rodrigues

; Machado-Coelho, George Luiz Lins

; Albajar-Viñas, Pedro

; Torres, Rosália Morais

; Lana, Marta de

Memórias do Instituto Oswaldo Cruz

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nov 2013, Volume 108 N. 7 Pages 873 - 880

Abstract: En | Text: En | PDF: En

The etiological treatment of Chagas disease is recommended for all patients with acute or recent chronic infection, but controversies remain regarding the benefit of chemotherapy and interpretations of the parasitological cure after etiological treatment. This study compares the laboratory and clinical evaluations of Chagas disease patients who were diagnosed 13 years earlier. Fifty-eight Chagas disease patients (29 treated with benznidazole and 29 untreated) were matched at the time of treatment based on several variables. Conventional serology revealed the absence of seroconversion in all patients. However, lower serological titres were verified in the treated group, primarily among patients who had the indeterminate form of the disease. Haemoculture performed 13 years after the intervention was positive for 6.9% and 27.6% of the treated and untreated patients, respectively. Polymerase chain reaction tests were positive for 44.8% and 13.8% of the treated and untreated patients, respectively. Patients who presented with the indeterminate form of the disease at the beginning of the study exhibited less clinical progression (17.4%) compared with the untreated group (56.5%). Therefore, this global analysis revealed that etiological treatment with benznidazole may benefit patients with respect to the clinical progression of Chagas disease and the prognosis, particularly when administered to patients with the indeterminate form of the disease.

https://doi.org/10.1590/0074-0276130122 1930 downloads

Tuberculosis patients co-infected with Mycobacterium bovis and Mycobacterium tuberculosis in an urban area of Brazil
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Silva, Marcio Roberto

; Rocha, Adalgiza da Silva

; Costa, Ronaldo Rodrigues da

; Alencar, Andrea Padilha de

; Oliveira, Vania Maria de

; Fonseca Junior, Antonio Augusto

; Sales, Mariana Lazaro

; Issa, Marina de Azevedo

; Soares Filho, Paulo Martins

; Pereira, Omara Tereza Vianello

; Santos, Eduardo Calazans dos

; Mendes, Rejane Silva

; Ferreira, Angela Maria de Jesus

; Mota, Pedro Moacyr Pinto Coelho

; Suffys, Philip Noel

; Guimaraes, Mark Drew Crosland

Memórias do Instituto Oswaldo Cruz

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may 2013, Volume 108 N. 3 Pages 321 - 327

Abstract: En | Text: En | PDF: En

In this cross-sectional study, mycobacteria specimens from 189 tuberculosis (TB) patients living in an urban area in Brazil were characterised from 2008-2010 using phenotypic and molecular speciation methods (pncA gene and oxyR pseudogene analysis). Of these samples, 174 isolates simultaneously grew on Löwenstein-Jensen (LJ) and Stonebrink (SB)-containing media and presented phenotypic and molecular profiles of Mycobacterium tuberculosis, whereas 12 had molecular profiles of M. tuberculosis based on the DNA analysis of formalin-fixed paraffin wax-embedded tissue samples (paraffin blocks). One patient produced two sputum isolates, the first of which simultaneously grew on LJ and SB media and presented phenotypic and molecular profiles of M. tuberculosis, and the second of which only grew on SB media and presented phenotypic profiles of Mycobacterium bovis. One patient provided a bronchial lavage isolate, which simultaneously grew on LJ and SB media and presented phenotypic and molecular profiles of M. tuberculosis, but had molecular profiles of M. bovis from paraffin block DNA analysis, and one sample had molecular profiles of M. tuberculosis and M. bovis identified from two distinct paraffin blocks. Moreover, we found a low prevalence (1.6%) of M. bovis among these isolates, which suggests that local health service procedures likely underestimate its real frequency and that it deserves more attention from public health officials.

https://doi.org/10.1590/S0074-02762013000300010 3619 downloads

Viral contamination during sequential phacoemulsification surgeries in an experimental model
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Coelho, Roberto Pinto

; Garcia, Tatiana Vannucci

; Paula, Jayter Silva

; Cruz, Antonio Augusto Velasco e

; Rocha, Eduardo Melani

; Figueiredo, Luiz Tadeu Moraes

; Rodrigues, Maria Lourdes Veronese

Arquivos Brasileiros de Oftalmologia

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jun 2012, Volume 75 N. 3 Pages 174 - 177

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

OBJETIVO: Determinar a incidência de contaminação com o vírus Piry entre os instrumentos cirúrgicos e acessórios usados durante cirurgias sequenciais de facoemulsificação. MÉTODOS: Um modelo experimental foi realizado com quatro olhos de porcos que foram contaminados com o vírus Piry e quatro olhos de porcos não contaminados. A facoemulsificação foi realizada alternando um olho contaminado para outro olho não contaminado. Entre as cirurgias, os campos de operação, luvas, bisturi, pinças, agulhas, seringas, pontas e bolsa coletora foram trocados, mantendo somente a caneta e os sistemas de irrigação e aspiração do facoemulsificador. RESULTADOS: No saco coletor, três amostras de olhos contaminados (3/4) foram positivos, e duas amostras de olhos não contaminados (2/4) também foram positivos; na ponta do facoemulsificador, uma amostra dos olhos contaminados (1/4) e duas amostras de olhos não contaminados (2/4) apresentaram resultados positivos. No sistema de irrigação, uma amostra de um olho não contaminado (1/4) foi positivo, e no sistema de aspiração, duas amostras de olhos contaminados (2/4) e duas amostras de olhos não contaminados (2/4) foram positivos. Nas luvas, as amostras foram positivos em dois olhos não contaminados (2/4) e duas amostras de olhos contaminados (2/4). Nas amostras de bisturi, três olhos contaminados (3/4) e nenhum dos olhos não contaminados (0/4) foram positivos e, finalmente, duas amostras da câmara anterior dos olhos não contaminados (2/4) reunidos após a cirurgia foram positivos. CONCLUSÕES: Em dois olhos não contaminados, a presença de material genético foi detectado após a cirurgia de facoemulsificação, demonstrando que a transmissão do material genético do vírus Piry ocorreu em algum ponto durante a cirurgia para estes olhos não contaminados, quando a caneta de facoemulsificação e o sistema de irrigação e aspiração foram reutilizados entre as cirurgias.

PURPOSE: To determine the incidence of Piry virus contamination among surgical instruments used with disposable accessories for phacoemulsification during sequential surgeries. METHODS: An experimental model was created with 4 pigs' eyes that were contaminated with Piry virus and 4 pigs' eyes that were not contaminated. Phacoemulsification was performed on the eyes, alternating between the contaminated and non-contaminated eyes. From one surgery to another, the operating fields, gloves, scalpel, tweezers, needles, syringes, tips and bag collector from the phacoemulsification machine were exchanged; only the hand piece and the irrigation and aspiration systems were maintained. RESULTS: In the collector bag, three samples from the contaminated eyes (3/4) were positive, and two samples from the non-contaminated (2/4) eyes were also positive; at the tip, one sample from the contaminated eyes (1/4) and two samples of the non-contaminated eyes (2/4) yielded positive results. In the irrigation system, one sample from a non-contaminated eye (1/4) was positive, and in the aspiration system, two samples from contaminated eyes (2/4) and two samples from non-contaminated eyes (2/4) were positive. In the gloves, the samples were positive in two samples from the non-contaminated eyes (2/4) and in two samples from the contaminated eyes (2/4). In the scalpel samples, three contaminated eyes (3/4) and none of the non-contaminated eyes (0/4) were positive; finally, two samples from the anterior chambers of the non-contaminated eyes gathered after surgery were positive. CONCLUSIONS: In two non-contaminated eyes, the presence of genetic material was detected after phacoemulsification surgery, demonstrating that the transmission of the genetic material of the Piry virus occurred at some point during the surgery on these non-contaminated eyes when the hand piece and irrigation and aspiration systems were reused between surgeries.

3374 downloads

10.

Classificação dos tumores hematopoéticos e linfoides de acordo com a OMS: padronização da nomenclatura em língua portuguesa, 4ª edição
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Zerbini, Maria Cláudia Nogueira

; Soares, Fernando Augusto

; Morais, José Carlos

; Vassallo, José

; Velloso, Elvira Deolinda Rodrigues Pereira

; Chaufaille, Maria de Lourdes L. F

; Chiattone, Carlos Sergio

; Aldred, Vera Lucia

; Siqueira, Sheila Aparecida Coelho

; Alves, Antonio Correia

; Castelli, Jussara Bianchi

; Oliveira, Claudia Regina Gomes Mendes Cardim de

; Menezes, Yara de

; Paes, Roberto Pinto

Jornal Brasileiro de Patologia e Medicina Laboratorial

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dec 2011, Volume 47 N. 6 Pages 643 - 648

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

INTRODUÇÃO: A classificação da Organização Mundial da Saúde (OMS) para os tumores do tecido hematopoético e linfoide (4ª edição, 2008) representa uma revisão atualização da 3ª edição publicada em 2001. A tradução da nomenclatura utilizada para identificar as entidades descritas deve ser clara, precisa e uniforme no sentido de reproduzir de forma correta as diversas entidades clinicopatológicas para clínicos, patologistas e pesquisadores envolvidos na área da onco-hematopatologia. OBJETIVO: Os autores apresentam uma proposta de atualização e padronização terminológica em língua portuguesa, com base na OMS/2008

INTRODUCTION: The World Health Organization (WHO) classification of hematopoietic and lymphoid tissue (4th edition, 2008) tumors constitutes an updated review of the 3rd edition published in 2001. The translation of the nomenclature used to describe the entities should be clear, precise and uniform so that clinicians, pathologists and researchers involved in the onco-hematopathological area may identify them accurately. OBJECTIVE: With this purpose, the authors present an updated proposal and a terminological standardization in Portuguese based on WHO/2008

17976 downloads

11.

Effect of bevel position on the corneal endothelium after phacoemulsification
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Raskin, Eduardo

; Paula, Jayter Silva

; Cruz, Antonio Augusto Velasco

; Coelho, Roberto Pinto

Arquivos Brasileiros de Oftalmologia

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dec 2010, Volume 73 N. 6 Pages 508 - 510

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

Objetivo: Comparamos duas técnicas de cirurgia de catarata. A técnica cirúrgica tradicional, em que direciona a abertura do bisel da ponteira de facoemulsificação para o endotélio corneano, com a técnica oposta, onde a reversão da posição de abertura permite o direcionamento da energia de emulsificação para o núcleo. Estudamos seus efeitos sobre a córnea e possíveis complicações. Métodos: O trabalho foi divido em quatro tempos: pré-operatório e após 30, 60 e 180 dias. Os pacientes foram divididos em dois grupos: o grupo 1, tratado com a técnica cirúrgica tradicional, com a abertura da ponteira direcionada para o endotélio, e grupo 2, que recebeu tratamento com técnica oposta, direcionada diretamente para o núcleo ou para os fragmentos nucleares. Após as cirurgias, foram estudados: perda endotelial após 30, 60 e 180 dias, tempo total de cirurgia e tempo efetivo de faco. Resultados: Os resultados intraoperatórios apresentaram o tempo efetivo de facoemulsificação no GI teve média de 8,08 segundos (DP=6,75) e no GII, média de 7,0 segundos (P=0,1792) e o tempo total de cirurgia de 10,01 ± 2,46 minutos no GI e 9,86 ± 2,17 minutos no GII (p=0,6267) respectivamente. O teste pareado não revelou diferença estatística entre os grupos. As complicações foram similares nos dois grupos. A média de perda de células endoteliais foi de 6,9% no GI e2,8% in GII com um mês; 6,9% no GI e 3,6%noGIIcom trêsmeses e 11,9% no GI e 7,6% no GII com seis meses de pós-operatório. Conclusão: Concluímos que a variação da manobra apresentada é segura e pode minimizar perdas no endotélio corneano, podendo ser uma opção na cirurgia da catarata, de acordo com as preferências pessoais do cirurgião.

Purpose: To compare the extent of corneal endothelial (CE) cell loss changes in two groups of eyes submitted to phacoemulsification, with the conventional bevel-up tip position in one eye and with the bevel-down tip position in the fellow eye. Methods: This prospective clinical trial comprised 25 patients with bilateral cataracts subjected to lens removal by phacoemulsification with the conventional bevel-up tip position (GI) in one eye and with the bevel-down tip position (GII) in the fellow eye. The nuclei were graded clinically on the basis of hardness. The endothelial cell count (ECC) was evaluated preoperatively and 1, 3 and 6 months postoperatively. Total surgical time, effective ultrasound time and complications were also compared between the groups. Statistical analysis was performed by the Tukey Studentized Range test, with repeated measures for the selected periods. For the other parameters a paired t test was used. Data are presented as mean ± SD, with the level of significance set at p<0.05. Results: The mean effective ultrasound time was 8.08 ± 6.75 seconds in group I and 7.00 ± 5.75 seconds in GII (P=0.1792) and total surgical time was 10.01 ± 2.46 minutes in GI and 9.86 ± 2.17 minutes in GII (p=0.6267), respectively. The paired t test revealed no statistical differences between the groups. Complications were also similar between the groups. Mean endothelial cell count loss was 6.9% in GI and 2.8% in GII at one month; 6.9% in GI and 3.6% in GII at three months and 11.9% in GI and 7.6% in GII at six months postoperatively. Comparison of endothelial cell count (ECC) showed a statistically significant difference between the groups during the postoperative period. Conclusion: The conventional bevel-up tip position has a negative effect on corneal endothelial cells compared with the bevel-down position. Since the results of other surgical parameters were similar, the bevel-down tip position should be considered as an option in non-complicated phacoemulsification.

3068 downloads Cited 1 time in SciELO

12.

Preoperative Nd:YAG laser anterior capsulotomy in white intumescent cataracts: report of 11 cases
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Coelho, Roberto Pinto

; Paula, Jayter Silva

; Silva, Rafael Nery e

; Garcia, Tatiana Vannucci

; Martin, Luiz Fernando Taranta

Arquivos Brasileiros de Oftalmologia

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feb 2009, Volume 72 N. 1 Pages 113 - 115

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

A realização da capsulorrexis curvilínea contínua em olhos com catarata branca intumescente é ainda considerada um desafio pelo alto risco de extensão da capsulotomia para a periferia do cristalino. Apesar da descrição de diversas técnicas cirúrgicas voltadas para a prevenção de tal complicação, o uso de Nd:YAG laser no pré-operatório tem raros relatos na literatura internacional. Onze pacientes com cataratas brancas intumescentes foram submetidos a capsulotomia pré-operatória com Nd:YAG laser. Todos os pacientes apresentaram, após a aplicação do laser, a saída de córtex liquefeito para a câmara anterior. Nenhum paciente apresentou complicações cirúrgicas com o procedimento. Desta forma, a capsulotomia anterior com Nd:YAG laser representa uma opção técnica fácil e segura no manejo de cataratas brancas intumescentes.

Creating a continuous curvilinear capsulorhexis in eyes with white intumescent cataracts is a challenge due to the high risk of extension of capsular tears to the lens periphery. Several approaches have been described to avoid this complication and preoperative Nd:YAG laser anterior capsulotomy has been little reported as an optional technique. Eleven patients with white intumescent cataracts were submitted to preoperative Nd:YAG laser anterior capsulotomy. All patients had some degree of cortex falling in anterior chamber after laser application. No patient developed later complications. Thus, preoperative Nd:YAG laser anterior capsulotomy represents a safe and easy option for white intumescent cataracts.

3869 downloads

13.

Evaluation of adenosine deaminase seric activity in the diagnosis of bovine tuberculosis
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Silva, Márcio Roberto

; Mota, Pedro Moacyr Pinto Coelho

; Leite, Ricardo de Miranda Henriques

; Lobato, Francisco Carlos Faria

; Leite, Rômulo Cerqueira

; Lage, Andrey Pereira

Memórias do Instituto Oswaldo Cruz

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jun 2006, Volume 101 N. 4 Pages 391 - 395

Abstract: En | Text: En | PDF: En

Determination of seric levels of adenosine deaminase (ADA), an enzyme produced by monocytes/macrophages and lymphocytes, has been used in the diagnosis of human tuberculosis (TB). In the present study, ADA seric activity was evaluated comparatively to the comparative tuberculin test in the diagnosis of bovine tuberculosis. Two hundred fifty-six cattle were classified by origin and by the comparative tuberculin test as TB-positive animals (n = 52, from herds where the Mycobacterium bovis had previously been isolated), and TB-negative animals (n = 204, TB-free herds). The mean ADA seric value from the TB-positive group (4.45 ± 2.33 U/L) was significantly lower (p = 0.008) than that observed in sera from the TB-negative group (6.12 ± 4.47 U/L). When animals from a herd with clinical cases of enzootic bovine leukosis of TB-negative group were withdrawn from analysis, the mean ADA seric values of TB-negative group (5.12 ± 3.75 U/L) was not significantly different anymore from that of the TB-positive group (p = 0.28). There was no agreement in the diagnosis of bovine TB between comparative tuberculin test and determination of ADA seric values, using two different cutoff points, being 6.12 U/L and 15.0 U/L, (kappa = -0.086 and kappa = -0.082, respectively). In conclusion, the determination of ADA seric activity was not a good auxiliary test for bovine TB, because it was not able to distinguish between TB-positive and TB-negative animals.

3041 downloads

14.

Hidrolisados protéicos de arroz com baixo teor de finilalanina, obtidos pela ação da corolase PP e uso do carvão ativado
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Bizzotto, Carolina Schaper

; Capobiango, Michely

; Biasutti, Eliza Augusta Rolim

; Silva, Viviane Dias Medeiros

; Junqueira, Roberto Gonçalves

; Silvestre, Marialice Pinto Coelho

Ciência e Agrotecnologia

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apr 2006, Volume 30 N. 2 Pages 308 - 316

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

A partir do extrato protéico obtido em meio alcalino, empregou-se a corolase PP no preparo de seis hidrolisados enzimáticos de arroz, visando o desenvolvimento de formulações dietéticas para fenilcetonúricos. O procedimento de passagem por coluna contendo carvão ativado foi utilizado na remoção de fenilalanina (Phe) dos hidrolisados. O teor de Phe nos extratos protéicos de arroz e seus hidrolisados, após tratamento com carvão, foi determinado por espectrofotometria derivada segunda. O teor final de fenilalanina nos hidrolisados variou de 0,39 a 68,34 mg 100 g-1, o que corresponde a uma remoção de 84 a 100%. A distribuição dos peptídeos nas amostras, de acordo com o tamanho da cadeia, foi estudada como um dos critérios para a avaliação da qualidade nutricional dos hidrolisados. O fracionamento dos peptídeos foi realizado por CLAE de exclusão molecular e, para a quantificação empregou-se o método rápido da área corrigida da fração. Os resultados indicaram que o maior teor de oligopeptídeos foi obtido quando se empregou a corolase PP em uma relação E:S de 1%, e uma concentração protéica inicial de 1,56 g 100 mL-1.

Starting with alkaline protein extract, the Corolase PP was used for preparing six enzymatic rice hydrolysates, with the aim of producing dietary formulations for phenylketonuria treatment. A column containing activated pure charcoal was used for removing phenylalanine (Phe). The Phe contents of rice protein extract and hydrolysates were determined by second derivative spectrophotometry. The final Phe content of the hydrolysates varied from 0.39 to 68.34 mg 100 g-1, corresponding to removal levels from 84% to 100%. The distribution of peptides according to their size was used as an approach for the nutritional evaluation of the hydrolysates. The fractionation of peptides was performed by size-exclusion HPLC, and the rapid correct fraction area method was used for the their quantification. The results indicated that the higher oligopeptide content was obtained when corolase PP was used with an enzyme:substrate ratio of 1% and the initial protein concentration of 1,56 g 100 mL-1.

2582 downloads Cited 3 times in SciELO

15.

Spontaneous late in-the-bag intraocular lens dislocation after can-opener capsulotomy: case report
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Coelho, Roberto Pinto

; Zanatto, Maria Cristina

; Paula, Jayter Silva de

; Romão, Erasmo

Arquivos Brasileiros de Oftalmologia

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dec 2005, Volume 68 N. 6 Pages 864 - 866

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

Os autores relatam o caso de homem de 58 anos de idade que apresentou deslocamento espontâneo e tardio de lente intra-ocular dentro do saco capsular para o vítreo. O paciente havia sido submetido a facectomia extracapsular com capsulotomia do tipo abridor de latas e implante de lente de polimetilmetacrilato de três peças sem intercorrências e, dois anos após a cirurgia, desenvolveu síndrome de contração capsular com formação de um anel fibrótico na cápsula e subluxação da lente intra-ocular. Embora incomum e relacionada principalmente com capsulorexe curvilínea contínua, a síndrome de contração capsular pode ocorrer em pacientes submetidos a facectomia extracapsular com capsulotomia do tipo abridor de latas e implante de lente de polimetilmetacrilato e pode ser o fator causador do deslocamento da lente intra-ocular.

We report a case of a 58-year-old man presenting with a spontaneous and late in-the-bag intraocular lens dislocation to the vitreous. A previous uneventful extracapsular cataract extraction with can-opener style capsulotomy and implantation of a polymethylmethacrylate three-piece lens was performed and, two years after the surgery, the patient developed capsule contraction syndrome with a fibrotic ring formation and dislocation of the intraocular lens. Although uncommon and related mainly to continuous curvilinear capsulorhexis, capsule contraction syndrome occurs in patients undergoing extracapsular cataract surgery with can-opener style and polymethylmethacrylate lens implantation, and can be the causative factor of intraocular lens dislocation.

3311 downloads Cited 2 times in SciELO

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