Este artigo tem como objetivo o estudo e a avaliação do modelo analítico de uma corda dedilhada. As condições iniciais que ocorrem em instrumentos com este tipo de ataque serão aplicadas à equação geral do movimento das ondas em uma corda para que seja obtida a descrição matemática de tal movimento; em seguida será evidenciado o que é possível concluir de tais resultados quando aplicados a instrumentos musicais.

This article aims to study and evaluate the analytical model of a plucked string. The initial conditions that occur in instruments with this type of attack will be applied to the general equation for the movement of waves on a string, so that the mathematical description of such movement is obtained; then, it will be shown what is possible to be concluded from such results when applied to musical instruments.

ABSTRACT We used five nonlinear models to calculate the weight gain of rainbow trout (122.11±15.6 g) during the final grow-out phase of 98 days under three different feed types (two commercials diets, A and B, and one experimental diet, C) in triplicate groups. We fitted the von Bertalanffy growth function with allometric and isometric scaling coefficient, Gompertz, Logistic, and Brody functions to weight (g) at age data of 900 fish, distributed in nine tanks. The equations were fitted to the data based on the least squares method using the Marquardt iterative algorithm. The accuracy of the fitted models was evaluated using a model performance metrics, combining mean squared residuals (MSR), mean absolute error (MAE), and Akaike’s Information Criterion corrected for small sample sizes (AICc). All models converged in all cases tested. The evaluation criteria for the Logistic model indicated the best overall fit (0.704) under all different feed types, followed by the Gompertz model (0.148), and the von Bertalanffy-I and von Bertalanffy-A with 0.074 each. The obtained asymptotic values are in agreement with the biological attributes of the species, except for the Brody model, whose values were massively exceeding the biologic traits of rainbow trout in 0.556 of tested cases. Additionally, ∆AICc results identify the Brody model as the only model not substantially supported by the data in any case. All other models are capable of reflecting the effects of various feed types; these results are directly applicable in farm management decisions.

Objective: The relationship between biomarkers of amyloid-beta aggregation (Aβ1-42) and/or neurodegeneration (Tau protein) in cerebrospinal fluid (CSF) and cognitive decline is still unclear. We aimed to ascertain whether CSF biomarkers correlate with cognitive performance in healthy and cognitively impaired subjects, starting from clinical diagnoses. Methods: We tested for correlation between CSF biomarkers and Mini-Mental State Examination (MMSE) scores in 208 subjects: 54 healthy controls, 82 with mild cognitive impairment (MCI), 46 with Alzheimer’s disease (AD), and 26 with other dementias (OD). Results: MMSE correlated weakly with all CSF biomarkers in the overall sample (r = 0.242, p < 0.0006). Aβ1-42 and MMSE correlated weakly in MCI (r = 0.247, p = 0.030), and moderately in OD (r = 0.440, p = 0.027). t-Tau showed a weak inverse correlation with MMSE in controls (r = -0.284, p = 0.043) and MCI (r = -0.241, p = 0.036), and a moderate/strong correlation in OD (r = 0.665), p = 0.0003). p-Tau correlated weakly with MMSE in AD (r = -0.343, p = 0.026) and moderately in OD (r = -0.540, p = 0.0005). The Aβ1-42/p-Tau ratio had a moderate/strong correlation with MMSE in OD (r = 0.597, p = 0.001). Conclusion: CSF biomarkers correlated best with cognitive performance in OD. t-Tau correlated weakly with cognition in controls and patients with MCI. In AD, only p-Tau levels correlated with cognitive performance. This pattern, which has been reported previously, seems to indicate that CSF biomarkers might not be reliable as indicators of disease severity.

Resumo O objetivo neste estudo foi avaliar o impacto de diferentes diâmetros de pinos de fibra de vidro (PFVs) na resistência de união à dentina. Quarenta dentes humanos unirradiculares foram tratados endodonticamente e utilizados para cimentação de PFVs (White Post DC, FGM) com diferentes diâmetros (n=10): P1 - ø 1,6 mm coronal x 0,85 mm apical; P2 - ø 1,8 mm coronal x 1,05 mm apical; P5 - ø 1,4 mm coronal x 0,65 mm apical; e PC - pino número 0,5 individualizado com resina composta (Tetric Ceram A2, Ivoclair Vivadent). Todos os PFVs foram cimentados no canal radicular usando cimento resinoso dual (Variolink II, Ivoclar Vivadent). As raízes foram seccionadas em três secções (cervical, média e apical) e submetidas ao teste push-out. Os modos de falha de todos os espécimes foram classificados em falha adesiva entre o cimento resinoso e pino, falha adesiva entre dentina e cimento resinoso, falha coesiva no cimento resinoso, pino ou dentina e falha mista. Os dados foram analisados com ANOVA two-way e teste de Tukey (a=0,05). Os maiores valores de resistência da união foram apresentados para os grupos P2 e PC. Não houve diferença estatisticamente significante entre os terços dos PFVs cimentados na raiz para cada grupo. Os grupos P2, P5 e PC apresentaram predominantemente falha adesiva entre a dentina e o cimento resinoso. Para o grupo P1, o tipo de falha mais prevalente foi a adesiva entre cimento resinoso e pino. Pode-se concluir que o pino de fibra de vidro bem adaptado ao canal radicular apresentou os maiores valores de resistência da união, independentemente do terço dos PFVs.

Abstract The aim of this study was to evaluate the effect of different glass fiber posts (GFPs) diameters on the push-out bond strength to dentin. Forty unirradicular human teeth were endodontically treated and used for cementation of GFPs (White Post DC, FGM) with different diameters (n=10): P1 - ø 1.6 mm coronal x 0.85 mm apical; P2 - ø 1.8 mm coronal x 1.05 mm apical; P5 - ø 1.4 mm coronal x 0.65 mm apical; and PC - customized post number 0.5 with composite resin (Tetric Ceram A2, Ivoclair Vivadent). All GFPs were cemented into the root canal using a dual-curing luting composite (Variolink II, Ivoclar Vivadent). One slice (1.7 mm) of each root third of cemented GFP (cervical, middle, and apical) was submitted to push-out testing. Failure modes of all specimens were classified as: adhesive failure between resin cement and post; adhesive failure between dentin and resin cement; cohesive failure within resin cement, post or dentin; and mixed failure. The data were analyzed with two-way ANOVA and Tukey’s test (a=0.05). The highest bond strength values were presented for the P2 and PC groups. There was no statistically significant difference between the GFP thirds in each group. The groups P2, P5, and PC showed predominantly adhesive failure. For P1, the most prevalent type of failure was adhesive between resin cement and post. It may be concluded that a glass fiber post that is well adapted to the root canal presents higher bond strength values, regardless of GFP third.

RESUMO Introdução: A resiliência apresenta-se como tema relevante de estudo no cotidiano do pós-transplante de células-tronco hematopoiéticas. Objetivo: identificar o nível de resiliência dos clientes no pós-transplante; e analisar os fatores de risco e de proteção, e expectativas presentes no cotidiano do pós-transplante. Metodos: Estudo qualitativo, realizado com 15 clientes no pós-transplante de células-tronco hematopoiéticas da Unidade de Transplante de Medula Óssea de um hospital universitário localizado no município do Rio de Janeiro, Brasil. Os dados foram coletados entre os meses de julho e agosto de 2011, por meio da Escala de Resiliência e da entrevista semiestruturada. Resultados: Os clientes apresentaram uma resiliência moderada, e da análise temática das entrevistas emergiram três subunidades: O tratamento que adoece e que faz perder a potência; Os suportes interno e externo: fortalecendo as estratégias de enfrentamento; e A superação como um processo. Conclusão: Os clientes se encontram em um processo de superação, uma vez que ainda vivenciam as dificuldades decorrentes do tratamento, requerendo estratégias adequadas de enfrentamento. Através dos pressupostos da resiliência, permitiu-se conhecer tais movimentos presentes neste universo, além de fomentar a necessidade de novas pesquisas dentro da temática.

ABSTRACT Introduction: Resilience is currently a topic worth studying in daily life for cases of hematopoietic stem cell transplantation. Objective: To identify the level of resilience of the clients after transplant and to analyze the risk and the protective factors present in the day-to-day post-transplant. Methods: Qualitative study conducted on 15 clients in the post-transplant of a bone marrow transplant unit of a university hospital in the city of Rio de Janeiro, Brazil. Data were collected between July and August 2011, through the Resilience Scale and a semi-structured interview. Results: Clients showed moderate resilience, and the thematic analysis of the interviews showed three subunits: treatment that makes people sick and lose power, internal and external supports (strengthening of survival strategies), and overcoming as a process. Conclusion: Clients were in a recovery process, as they still experienced the difficulties resulting from treatment, which requires adequate managing strategies. Through the assumptions of the capacity for recovery, they were allowed dealing with such movements present in this universe, as well as promoting the need for new research on the subject.

RESUMEN Introducción: La resiliencia presenta un tema relevante del estudio cotidiano post-trasplante de trasplante de células madre hematopoyéticas. Objetivo: Identificar el nivel de resiliencia de los clientes después del trasplante; y analizar el riesgo y los factores protectores presentes en el día a día post-trasplante. Métodos: estudio cualitativo realizado con 15 clientes en el post-trasplante de una unidad de trasplante de médula de un hospital universitario en la ciudad de Río de Janeiro, Brasil. Los datos fueron recolectados entre julio y agosto de 2011, por medio de la Escala de Resiliencia y entrevista semiestructurada. Resultados: Los clientes mostraron una resiliencia moderada, y el análisis temático de las entrevistas revelaron tres subunidades: tratamiento que hace enfermar y hace perder el poder; los soportes interno y externo: el fortalecimiento de las estrategias de supervivencia; y la superación como proceso. Conclusión: Los clientes estaban en un proceso de recuperación, ya que todavía experimentaban las dificultades resultantes del tratamiento, lo que requiere estrategias de afrontamiento adecuadas. A través de los supuestos de la capacidad de recuperación, se le permitió hacer frente a tales movimientos presentes en este universo, así como la promoción de la necesidad de nuevas investigaciones sobre el tema.

Abstract Objective: To determine the mortality rate of children, adolescents and adults with sickle cell anemia in Rio de Janeiro, Brazil. Methods: The number of deaths, the mortality rate and the causes of deaths in patients with sickle cell anemia who were treated and followed up at our institution for 15 years were determined and compared to data available for the Brazilian population. Results: The overall number of deaths was 281 patients with a mortality rate of 16.77%. Survival probability was significantly higher in females. The number of deaths and the mortality rate were age-specific with a significant increase in the 19- to 29-year-old age group. The remaining life expectancy of the patients with sickle cell anemia was less than that of Brazilians at large. The gap between the two was about 20 years for ages between one and five years with this gap decreasing to ten years after the age of 65 years. The most common causes of death were infection, acute chest syndrome, overt stroke, organ damage and sudden death during painful crises. Conclusion: To the best of our knowledge, this is the first Brazilian study in a single institution in Rio de Janeiro; the mortality rate was 18.87% among adult patients with sickle cell anemia. The mortality rates in children and adults are higher than those reported in developed countries of the northern hemisphere.

Neste artigo será feita uma discussão sobre alguns dos principais aspectos de funcionamento do violão, iniciando por um breve histórico contextualizando as mudanças pelas quais o instrumento passou ao longo dos séculos, incluindo alguns apontamentos feitos pelo físico Michael Kasha. Será dada ênfase na descrição do leque harmônico do violão, um conjunto de barras e travessas que possui finalidades acústicas e estruturais, e que apresentou uma evolução em forma e complexidade que acompanhou o desenvolvimento do violão. É feito um tratamento matemático do ressonador de Helmholtz formado pelo ar enclausurado pelo corpo do instrumento. Por fim, é feita uma discussão sobre os captadores magnéticos, os quais foram introduzidos no violão na primeira metade do séc. XX, visando um aumento do nível de intensidade sonora e, posteriormente levaram ao surgimento dos instrumentos de corpo sólido, como a guitarra e o baixo elétricos.

In this article there will be developed a discussion about some of the main aspects of the functioning of the acoustic guitars, beginning with a brief history putting in context the changes the instrument has been through the centuries, including some notes made by the physicist Michael Kasha. Emphasis will be placed on the description of the guitar bracing, a set of bars and tone braces that have acoustic and structural purposes and that presented an evolution in form and complexity that accompanied the development of the guitar. A mathematical treatment is made of the Helmholtz resonator formed by the air enclosed by the instrument's body. Finally, a discussion is developed about magnetic pickups, which were introduced in the first half of the 20th century to the guitars, with the objective to obtain a higher sound intensity level and later led to the emerging of solid body instruments such as the electric guitar and the electric bass.

Resumo Neste artigo será feita uma discussão sobre alguns dos principais aspectos do arco de violino. Uma descrição da sua evolução histórica justifica a atual forma geométrica e a sua estrutura é descrita na seção que trata do arco moderno. Os materiais, aqueles historicamente utilizados e as possibilidades alternativas, são tema de seção específica. A última seção trata das propriedades físicas do arco e de como este pode ser caracterizado em função destas, trazendo uma relação entre conceitos físicos e a sua aplicação no arco de violino.

Abstract In this article a discussion will be made about some of the main aspects of the violin bow. A description of its historical evolution justifies the present geometrical shape and its structure is described in section which deals with the modern bow. The materials, those historically used and alternative possibilities, are the subject of a specific section. The final section deals with the physical properties of the bow and how it can be characterized by these properties, bringing a relationship between physical concepts and their application on the violin bow.

ABSTRACT The course of oncology patients is still crossed by setbacks that interfere with their prognosis and quality of life. This study aims to map the itinerary of cancer patients from diagnosis to treatment and to analyze its implications in nursing healthcare practices for the control of cancer. This is a qualitative study, conducted using oral history technique with ten cancer patients treated in a federal hospital in the city of Rio de Janeiro, Brazil. The data were analyzed according to thematic analysis technique and with the making of representations of the therapeutic itinerary of each interviewee. Three main themes were identified: course before diagnosis, course from diagnosis to the beginning of treatment, and course during treatment. We observed that the access to medical services is presented as a problem that culminates in the worsening of the disease, appearing of metastases and death of the patient, in addition to creating conditions that hinder the adherence to treatment.

RESUMEN La trayectoria del cliente oncológico todavía es permeada por inconvenientes que interfieren en su pronóstico y calidad de vida. Así, este estudio pretende identificar el itinerario del paciente oncológico desde el diagnóstico hasta el tratamiento y analizar sus implicaciones en las acciones de enfermería para el control del cáncer. Estudio cualitativo, realizado a través de la técnica de historia oral de diez clientes oncológicos atendidos en un hospital federal en el municipio de Rio de Janeiro, Brasil. Los datos fueron tratados de acuerdo con la técnica de análisis temático, además de la confección de representaciones del itinerario terapéutico de cada entrevistado. Fueron identificados tres ejes temáticos: trayectoria antes del diagnóstico; trayectoria del diagnóstico al inicio del tratamiento; y trayectoria en el tratamiento. Se nota que el acceso a los servicios se presenta como un problema que culmina en el agravamiento de la enfermedad, el en surgimiento de metástasis y la muerte del paciente, además de crear condiciones para la falta de adhesión al tratamiento.

RESUMO A trajetória do cliente oncológico ainda é permeada por percalços que interferem em seu prognóstico e qualidade de vida. Assim, este estudo visa a mapear o itinerário do paciente oncológico desde o diagnóstico até o tratamento e analisar suas implicações nas ações de enfermagem para o controle do câncer. Estudo qualitativo, realizado através da técnica de história oral de dez clientes oncológicos atendidos em um hospital federal no município do Rio de Janeiro, Brasil. Os dados foram tratados de acordo com a técnica de análise temática, além da confecção de representações do itinerário terapêutico de cada entrevistado. Foram identificados três eixos temáticos: trajetória antes do diagnóstico, trajetória do diagnóstico ao início do tratamento, e trajetória no tratamento. Percebe-se que o acesso aos serviços apresenta-se como um problema que culmina no agravamento da doença, no aparecimento de metástases e a morte do paciente, além de criar condições para a falta de adesão ao tratamento.

Resumo O artigo analisa qualidade da informação dos óbitos por causas externas em Fortaleza, Ceará. Analisaram-se a completitude das informações da Declaração de Óbito (DO) e a concordância entre a causa básica do óbito descrita na DO e a registrada no Sistema de Informação sobre Mortalidade (SIM). Utilizaram-se todas as declarações originais dos óbitos por causas externas, ocorridos em 2010, de residentes em Fortaleza. A população do estudo foi de 2109 DO. As declarações foram verificadas individualmente buscando-se identificar o preenchimento dos campos e a causa básica atestada. Foi realizada a codificação da causa básica presente na DO e comparada com a do SIM. Os campos com melhor nível de preenchimento foram: nome (100%), local de residência (100%), nome da mãe (99,6%), naturalidade (99,1%), sexo (98,8%). Os campos com pior nível de preenchimento foram: local de ocorrência (55%), raça/cor (38,4%), escolaridade (34%). Observaram-se inadequações no preenchimento da causa básica. Na DO são relatadas as lesões encontradas e não as circunstâncias do óbito. Observou-se nível de concordância fraca entre a causa básica da DO e a registrada no SIM (kappa 0,07). Sugerem-se estratégias de sensibilização e qualificação dos médicos legistas.

Abstract The article analyzes the quality of information of deaths from external causes in Fortaleza, in the State of Ceará, Brazil. They analyzed the completeness of the information of the death certificate (DO) and the correlation between the underlying cause of death described in the OF and registered in the Mortality Information System (SIM ).We used all the original statements of deaths from external causes, occurred in 2010, of residents in Fortaleza. The study population was 2109 DO. The statements were individually checked seeking to identify the completion of the fields and the basic cause attested the coding of the underlying cause in this DO and compared with the SIM was held. The fields with the highest completion rates were: name (100%), place of residence (100%), mother’s name (99.6%), place of birth (99.1%), and sex (98.8%). The fields with the lowest completion rates were: place of occurrence (55%), race/skin color (38.4%), and schooling (34%). They observed inadequacies in the completion of the underlying cause. In DO are reported injuries found and not the circumstances of the death. There was poor level of concordance between the basic cause of DO and registered on the SIM (kappa 0.07). They suggest awareness strategies and training of medical examiners.

Resumo O artigo analisa qualidade da informação dos óbitos por causas externas em Fortaleza, Ceará. Analisaram-se a completitude das informações da Declaração de Óbito (DO) e a concordância entre a causa básica do óbito descrita na DO e a registrada no Sistema de Informação sobre Mortalidade (SIM). Utilizaram-se todas as declarações originais dos óbitos por causas externas, ocorridos em 2010, de residentes em Fortaleza. A população do estudo foi de 2109 DO. As declarações foram verificadas individualmente buscando-se identificar o preenchimento dos campos e a causa básica atestada. Foi realizada a codificação da causa básica presente na DO e comparada com a do SIM. Os campos com melhor nível de preenchimento foram: nome (100%), local de residência (100%), nome da mãe (99,6%), naturalidade (99,1%), sexo (98,8%). Os campos com pior nível de preenchimento foram: local de ocorrência (55%), raça/cor (38,4%), escolaridade (34%). Observaram-se inadequações no preenchimento da causa básica. Na DO são relatadas as lesões encontradas e não as circunstâncias do óbito. Observou-se nível de concordância fraca entre a causa básica da DO e a registrada no SIM (kappa 0,07). Sugerem-se estratégias de sensibilização e qualificação dos médicos legistas.

Abstract The article analyzes the quality of information of deaths from external causes in Fortaleza, in the State of Ceará, Brazil. They analyzed the completeness of the information of the death certificate (DO) and the correlation between the underlying cause of death described in the OF and registered in the Mortality Information System (SIM ).We used all the original statements of deaths from external causes, occurred in 2010, of residents in Fortaleza. The study population was 2109 DO. The statements were individually checked seeking to identify the completion of the fields and the basic cause attested the coding of the underlying cause in this DO and compared with the SIM was held. The fields with the highest completion rates were: name (100%), place of residence (100%), mother’s name (99.6%), place of birth (99.1%), and sex (98.8%). The fields with the lowest completion rates were: place of occurrence (55%), race/skin color (38.4%), and schooling (34%). They observed inadequacies in the completion of the underlying cause. In DO are reported injuries found and not the circumstances of the death. There was poor level of concordance between the basic cause of DO and registered on the SIM (kappa 0.07). They suggest awareness strategies and training of medical examiners.

Objective: Inflammatory bowel disease (IBD) is associated with elevated levels of anxiety and depression and a reduction in health-related quality of life (HRQoL). Nonadherence to treatment is also frequent in IBD and compromises outcomes. Religious coping plays a role in the adaptation to several chronic diseases. However, the influence of religious coping on IBD-related psychological distress, HRQoL, and treatment adherence remains unknown. Method: This cross-sectional study recruited 147 consecutive patients with either Crohn’s disease or ulcerative colitis. Sociodemographic data, disease-related variables, psychological distress (Hospital Anxiety and Depression Scale), religious coping (Brief RCOPE Scale), HRQoL (WHOQOL-Bref), and adherence (8-item Morisky Medication Adherence Scale) were assessed. Hierarchical multiple regression models were used to evaluate the effects of religious coping on IBD-related psychological distress, treatment adherence, and HRQoL. Results: Positive RCOPE was negatively associated with anxiety (b = 0.256; p = 0.007) as well as with overall, physical, and mental health HRQoL. Religious struggle was significantly associated with depression (b = 0.307; p < 0.001) and self-reported adherence (b = 0.258; p = 0.009). Finally, anxiety symptoms fully mediated the effect of positive religious coping on overall HRQoL. Conclusion: Religious coping is significantly associated with psychological distress, HRQoL, and adherence in IBD.

<p>Os sinos são instrumentos de percussão, da família dos idiófonos. São dispositivos de produção de som apenas aparentemente simples. O seu corpo é constituído de uma liga metálica chamada bronze, que é uma combinação de cobre e estanho em proporções que podem sofrer ligeiras variações. No interior do sino encontra-se o badalo - um pêndulo que, quando oscila, atinge o corpo fazendo com que o sino soe. A fundição de um sino é bastante complexa e envolve um grande número de procedimentos, desde a construção dos moldes até a metalurgia e afinação. O sino moderno sofreu apenas algumas mudanças na sua forma em comparação aos primeiros sinos fundidos do Século IX. Do ponto de vista da acústica existem dificuldades para a sua modelagem, tanto devido aos métodos matemáticos envolvidos quanto à obtenção de resultados experimentais, já que o tamanho exagerado impede o seu translado para um laboratório. Neste artigo trataremos brevemente da origem, história, e utilização do sino, bem como dos principais processos de fundição empregados na sua fabricação e da descrição física de como o sino produz som.</p>

<p>Bells are percussion instruments from the idiophones family, being devices to produce sound which are simple only in appearance. The bells bodies are made of an alloy called bronze, which is a combination of copper and tin in a variable ratio. Inside the bell there is the clapper, a pendulum that hits the bell from inside in order to start the sound. Bell foundry is quite complex and involves a large number of procedures which range from the construction of the molds until the metallurgy and its tuning. The modern bell suffered only minor changes in its shape when compared to the first casted bells from the 9<italic>^th</italic> century. Complex mathematical methods are needed to create acoustical models for vibrating bells and, due to their exaggerated size, it is difficult to transport them to a laboratory in order to perform experimental analysis. This article presents a brief discussion on the origin, history and uses of the bell, as well as the main steps in the casting process and the physical description of the vibrating bell.</p>

Originária da flauta transversal alemã do séc. XII, a flauta transversal renascentista, também chamada de traverso, atingiu o ápice de sua popularidade entre os séculos XVI e XVII. Como tantos outros instrumentos musicais acústicos, as técnicas para sua construção e para seleção dos materiais utilizados, em especial das madeiras, são ditadas muito mais pela tradição e por generalizações intuitivas do que por indicações resultantes de pesquisa científica empírica. Este trabalho descreve uma breve história das flautas renascentistas, sua utilização, suas formas de execução e, principalmente, sua construção, a fim de avaliar até que ponto a seleção de materiais é importante para determinar as características qualitativas do instrumento, sendo que para este último ponto, foram utilizadas madeiras nacionais não tradicionais (como imbuia e sucupira), para a confecção, gerando bons exemplares.

Originated from the German Querflöte from the 12th century, the Renaissance transverse flute reached its highest popularity between the 16th and 17th centuries. Like several other acoustical musical instruments, the Renaissance transverse flute has its material selection, as well as its construction technique dictated by tradition and intuitive generalization rather than by scientific empirical research. This paper presents a brief history of Renaissance flutes and their making. We also have evaluated, in a qualitative way, the relevance of material selection for the instrument features. So far, it was possible to show the feasibility of a non-traditional wood choice, as Brazilian woods (such as imbuia and sucupira) were chosen to build and yielded good exemplars of this instrument.

PURPOSE: To analyze the intraoperative and immediate postoperative biochemical parameters of patients submitted to orthotopic liver transplantation. METHODS: Forty four consecutive orthotopic liver transplants performed from October 2009 to December 2010 were analyzed. The patients (38 male and eight female) were divided into two groups: group A, survivors, and group B, non-survivors. Fifty percent of group A patients were Chid-Pugh C, 40% Chid-Pugh B and 10% Chid-Pugh A. In group B, 52% of the patients were Chid-Pugh C, 41% Chid-Pugh B, and 17% Chid-Pugh A. All orthotopic liver transplants were performed by the piggy-back technique without a portacaval shunt in an anhepatic phase. ALT, AST, LDH and lactate levels were determined preoperatively, at five, 60 minutes after arterial revascularization of the graft and 24 and 48 hours after the end of the surgery.( or: after the surgery was finished). RESULTS: There were no preoperative clinical differences (Child and Meld) between the two groups. The times of warm and hypothermal ischemia were similar for both groups (p>0.05). Serum aminotransferases levels at five and 60 minutes after arterial revascularization of the graft were similar (p>0.05) for both groups, as also were lactate levels at the time points studied. There was no significant difference in Δ lactate between groups at any time point studied (p>0.05). No significant difference was observed between groups during the first 24 and 48 hours after surgery (p>0.05). CONCLUSION: No significant difference in any of the parameters studied was observed between groups. Under the conditions of the present study and considering the parameters evaluated, no direct relationship was detected between the intraoperative situation and the type of evolution of the patients of the two groups studied.