Purpose:The aim of this study was to analyse the changes in transfusion requirements, in patients submitted to orthotopic liver transpantation from cadaveric donors, with the use of intraoperative red blood cell salvage (Cell Saver). Methods: Data from 41 transplants were analysed. Intraoperative blood loss was calculated from the cell salvage, suction and the swabs. The autologous and heterologous transfusions were recorded The red blood salvage was performed using the Cell Saver 5 System (Haemonetics).. For analysis the patients were divided in two groups: one that used the Cell Saver and another that didn´t. Results: The median age of the patients was 50 years and the main indication for liver transplantation was cirrhosis (35 cases -85.3%). The median blood loss was 8362 + 3994 ml (with the Cell Saver) and 10824 + 7002 ml (without the Cell Saver) and the median transfusion of heterologous packed red blood cells was 9,6 + 8 units (with the Cell Saver) compared to 22,3 + 21 units (without the Cell Saver). Conclusions: The Cells Saver has the potential to reduce the need for heterologous blood transfusion reducing the risks of transmissible diseases. Key words: Liver Transplantation. Cell Saver. Blood Transfusion. Liver Surgery. RESUMO Objetivo: O objetivo desse estudo foi analisar as mundanças na quantidade de transfusão necessária com uso doIntraoperative red blood cell salvage (Cell saver), em pacientes submetidos a transplante ortotópico de fígado, doador cadáver. Métodos: Foram avaliados dados de 41 pacientes submetidos a transplante de fígado. O sangramento foi calculado de acordo com débito do aspirador, compressas e captação do Cell saver. A reposição necessária foi avaliada de acordo com a quantidade de transfusão heteróloga e autóloga. Para análise dos dados os pacientes foram dividos em dois grupos: com e sem uso de Cell saver. Resultados: A mediana de idade foi 50 anos e principal indicação de transplante foi cirrose hepática com 35 casos (85,3%). A mediana de sangramento durante o procedimento cirúrgico 8362 + 3994 ml (com cell saver) e 10824 + 7002 ml (sem cell saver) e a mediana de transfusão de concentrado de hemácias heterólogo, durante o período de internação hospitalar 9,6 + 8 unidades (com cell saver) compar 22,3 + 21 unidades (sem cell saver). Conclusão: Uso de Cell Saver tem um potential para reduzir a quantidade de transfusão heteróloga, dimuindo o risco de transmissão de doenças.

The purpose of this review was to carry out an analysis of the liver regenerative process focusing on the molecular interactions involved in this process. The authors undertook a review of scientific publications with a focus on the liver regeneration.The cellular processes involved in liver regeneration require multiple systematic actions related to cytokines and growth factors. These interactions result in the initiation of mitogenic potential of the hepatocytes. The action of these modulators in the regenerative process require a processing in the extra-cellular matrix. Serines and metal proteins are responsible for the bio availability of cytokines and growth factors so that they can interact as receptors in the cellular membrane generating signaling events for the beginning and end of the liver regenerative process. The exact mechanism of interaction between cells, cytokines and growth factors is not well established yet. A series of ordered events that result in the hepatic tissue regeneration has been described. The better understanding of these interactions should provide a new approach of the treatment for liver diseases, aiming at inducing the regenerative process. Key words: Liver Regeneration. Cytokines. Grow Factors. Hepatocytes. RESUMOO objetivo desta revisão foi desenvolver uma análise do processo regenerativo do fígado, focando as interações moleculares envolvidas neste processo.Os processos celulares envolvidos na regeneração hepática requerem múltiplas ações sistemáticas relacionadas com citoquinas e fatores de crescimento. Estas interações resultam na iniciação do potencial mitogênico dos hepatócitos. A ação destes moduladores do processo regenerativo necessita de processamento no meio extra celular. As serinas e metaloproteínas são responsáveis pela biodisponibilização de citoquinas e fatores de crescimento, para que então possam interagir com receptores na membrana celular gerando os eventos sinalizadores para o inicio e o término do processo regenerativo hepático.O exato mecanismo de interação entre células, citoquinas e fatores de crescimento não está bem estabelecido. Tem-se descrito uma série de eventos ordenados que resulta na regeneração do tecido hepático. O melhor entendimento destas interações leva a uma nova abordagem de tratamento para doenças hepáticas, objetivando a indução do processo regenerativo. Descritores: Regeneração Hepática. Citocinas. Fatores de Crescimento. Hepatócitos.

Objective: The objective in this study was to analyze candidates' knowledge on the liver transplantation process before and after putting in practice an educational intervention. Method:A quasi-experimental, one-group pretest-posttest research design was adopted. The final sample included 15 subjects. Research data were collected between January and March 2010 in three phases, which were: pretest, implementation of the educational intervention (two meetings) and posttest. Results: The results evidenced significant cognitive gains after the intervention, with improvements in the participants' performance. Conclusions: The research presents evidence that putting in practice a patient education strategy can enhance candidates' knowledge on the liver transplantation process and consequently contribute to a successful treatment.

This study aims to describe the learning results of the implementation of teaching strategies involving patients who will be submitted to liver transplantation. One of these strategies is to give the patients a manual with orientations and the subsequent application of a questionnaire related to the content of the manual. Authors analyzed 13 patients who were waiting for liver transplantation. With respect to the answers regarding the questionnaire, an average of 83.8% of correct responses was given and only one patient got all the questions right. During the correction and the time to clarify their doubts, authors concluded that the opportunity of reading the manual and applying the questionnaire allowed patients and families to get a better understanding about the surgery's most important aspects.

It is extremely important to assess psychological distress in patients listed for liver transplantation. An interdisciplinary approach is essential to improve the patients' quality of life both in the pre- and post-transplant periods.

This paper has the objective to analyze the cellular aspects of liver regeneration (LR). Upon damage in this organ, the regenerative capacity of hepatocyte is sufficiently able to reestablish the parenchyma as a whole. Taking into account the regenerative capacity of hepatocyte, the need of a progenitor or a liver trunk cell was not obvious. Nowadays it is well-established that precursor cells take part in the liver regenerative process. The liver trunk cell, oval cell, acts as a by-potential precursor, contributing for the liver restoration, mainly when the hepatocytes are unable to proliferate. Another precursor, trunk cell of hematopoetic origin (HSC), takes part in the regenerative process, originating cells of the hepatocytic lineage and colangiocytes, as well as the oval cell. The way the trans-differentiation takes place is not established yet. A number of studies must be undertaken in order to clarify questions, such as the possible occurrence of cellular fusion process between the HSC and the hepatic cells and the possibility of application as a new therapeutic procedure in the treatment of diseases associated with insufficiency of this noble organ.

Liver transplantation represents the most effective therapy for patients suffering from chronic end-stage liver disease. Until very recently, in Brazil, liver allocation was based on the Child-Turcotte-Pugh score and the waiting list followed a chronological criterion. In February 2002 the Model for End-stage Liver Disease (MELD) score was adopted for the allocation of donor livers in the US. After that change, an increased number of patients with more severe liver disease was observed, although there was no difference in 1-year patient and graft survival. A reduction in waiting-list mortality was also observed. In Brazil, the MELD score was adopted on May 31 st , 2006. Good results are expected regarding the new criterion for allocation.

A isquemia tem papel fundamental em muitas situações clínicas perioperatórias . Apesar da revascularização sanguínea a um órgão isquêmico seja essencial para prevenir a irreversibilidade da lesão celular, a reperfusão pode agravar as lesões produzidas na fase isquêmica isolada. Assim, o dano celular induzido após reperfusão de um órgão isquêmico é denominado de lesão de isquemia-reperfusão (I/R). Aspectos básicos da lesão I/R, são revisados neste artigo.