Predictors of high-quality cord blood units.

BACKGROUND: Analysis of umbilical cord blood (UCB) transplants shows a correlation between engraftment and total number of infused cells. Thus, it is worth evaluating what maternal and neonatal characteristics and collection techniques may affect the quality of UCB units. STUDY DESIGN AND METHODS: A cross-sectional study was performed with 7897 donors sequentially selected in three health care institutions in Brazil from October 2004 to March 2012, in which both quantitative and qualitative approaches were applied. All donors were considered suitable for cord blood collection. RESULTS: The maternal and neonatal characteristics and techniques of collection that influenced the total number of nucleated cells (TNCs; p < 0.001) were type of delivery, newborn weight and sex, and institution of UCB collection. The TNC count was associated with gestational age (p = 0.008), type of delivery (p < 0.001), newborn sex (p < 0.001), newborn weight (p < 0.001), and UCB collection technique (p = 0.003). Center B presented the largest number of nucleated cells in its results (p < 0.001), followed by Center A (p = 0.001). Other characteristics, such as maternal age, were analyzed but were not relevant for the nucleated cell number. CONCLUSION: This study provides elements for a model that allows an efficient selection of UCB donors, prioritizing candidates who have a better chance to lead to an optimized use of cord blood cells units.

Multi-Criteria Model for Evaluating Drugs to Prevent Deep Venous Thrombosis Associated With Orthopedic Surgery: A Hospital-Based Case Study.

BACKGROUND: It's estimated that 40% to 60% of patients undergoing major orthopedic surgery of the hip or knee who do not receive thromboprophylaxis will develop deep venous thrombosis Instituto Nacional de Traumatologia e Ortopedia has established a guideline to prevent DVT with the administration of the Enoxaparin. Recently, institute stakeholders have been questioning this guideline as new oral anticoagulants that offer more comfort and efficacy, but present higher risk of bleeding, have been appearing in the market for treating deep venous thrombosis. OBJECTIVE: This study aims to validate the application of a multicriteria decision analysis in a real-world problem, the use of rivaroxaban and enoxaparin to prevent deep venous thrombosis. METHODS: The multicriteria method MACBETH (Measuring Attractiveness by a Categorical Based Evaluation Technique) was used in a decision conferencing process to develop an evaluation model for measuring the relative value of the drugs on each evaluation criterion, separately and globally. The model-building process was informed by a literature review and meta-analysis of randomized clinical trials with a critical appraisal of the evidence. RESULTS: We report a model-structure with eight criteria, each one associated with a weighting coefficient and value function. Following a simple additive aggregation process, the model-outputs showed that Rivaroxaban was considered a robust option for DVT. Sensitivity analysis and robustness analysis were performed and testify the consistency of the results. CONCLUSION: This article contributes to literature by showing how MACBETH method can be combined with scientific evidence and participatory group processes, for health technology assessment in hospitals.

Proposiçäo de técnica endocavitária para remodelamento ventricular esquerdo / An endocavitary technique for left ventricular surgical remodeling

O remodelamento do coraçäo mediante vesntriculectomia parcial esquerda é uma proposiçäo atual para o tratamento cirúrgico paliativo de pacientes com miocardiopatia dilatada e sem critérios de transplante cardíaco. Este procedimento acarreta morbi-mortalidade imediata elevada, por resultar em áreas de isquemia ou necrose miocárdica e pelo risco de arritmias. Nosso objetivo é apresentar um técnica de remodelamento ventricular endocavitário, caracterizada pela manutençäo da arquitetura anatomofuncional do coraçäo por näo incorrer em ressecçäo ventricular. A técnica foi utilizada em circulaçäo extracorpórea e com o coraçäo preservado por cardioplegia sangüínea hipotérmica. Após atriotomia esquerda, a cúspide anterior da valva mitral foi removida e um enxerto triangular de pericárdio bovino (medindo aproximadamente 2x6x6 cm) suturado no endocárdio ventricular por pontos de Polipropileno 3-0 ancorados em feltro de Dacron. As bordas ao longo do enxerto foram fixadas em duas linhas imaginárias que se estendiam da ponta do ventrículo esquerdo ao anel valvar mitral, passando uma delas pela metade do septo interventricular e outra junto à inserçäo do músculo papilar posterior mitral. A aproximaçäo destas linhas configurou uma plicadura interna e posterior na cavidade ventricular esquerda, que teve seu diâmetro reduzido. As estruturas musculares e a circulaçäo coronária foram preservadas. A base do triângulo foi fixada ao anel mitral mediante os pontos utilizados para implante da bioprótese mitral, necessário devido à remoçäo da cúspide anterior da valva. Oito pacientes com miocardiopatia dilatada, excluídos do programa de transplante cardíaco, foram submetidos à técnica proposta, no período de outubro a dezembro de 1996. Dois pacientes eram do sexo feminino e 6 masculinos e sua idade variava entre 24 e 58 anos. Cinco pacientes mostraram regurgitaçäo mitral. Todos os doentes estavam hospitalizados por insuficiência cardíaca congestiva quando da indicaçäo cirúrgica e classificados em classe funcional IV (New York Heart Association). Ocorreram dois óbitos na presente série: um no pós-operatório imediato e outro no 3§ mês, por razoes näo relacionadas à presente técnica. A técnica de remodelamento ventricular intracavitário mostrou um resultado satisfatório em termos de mortalidade e morbidade hospitalar e melhora funcional a curto prazo. Um maior tempo de acompanhamento será necessário para demonstrar o benefício real da técnica,...