Trevo-persa - uma forrageira de duplo propósito.

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Qualidade do feno de hemártria (Hemarthria Altissima) cortado em diferentes datas.

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Cobertura vegetal e produtividade da soja no sistema de plantio direto, nas várzeas.

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Qualidade do feno de capim nilo (acroceras macrum) cortado em diferentes épocas.

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Endoscopy Timing in Patients with Acute Upper Gastrointestinal Bleeding.

BACKGROUND/AIMS: The role of very early (≤12 hours) endoscopy in nonvariceal upper gastrointestinal bleeding is controversial. We aimed to compare results of very early and early (12-24 hours) endoscopy in patients with upper gastrointestinal bleeding demonstrating low-risk versus high-risk features and nonvariceal versus variceal bleeding. METHODS: : This retrospective study included patients with nonvariceal and variceal upper gastrointestinal bleeding. The primary outcome was a composite of inpatient death, rebleeding, or need for surgery or intensive care unit admission. Endoscopy timing was defined as very early and early. We performed the analysis in two subgroups: (1) high-risk vs. low-risk patients and (2) variceal vs. nonvariceal bleeding. RESULTS: : A total of 102 patients were included, of whom 59.8% underwent urgent endoscopy. Patients who underwent very early endoscopy received endoscopic therapy more frequently (p=0.001), but there was no improvement in other clinical outcomes. Furthermore, patients at low risk and with nonvariceal bleeding who underwent very early endoscopy had a higher risk of the composite outcome. CONCLUSION: s: Very early endoscopy does not seem to be associated with improved clinical outcomes and may lead to poorer outcomes in specific populations with upper gastrointestinal bleeding. The actual benefit of very early endoscopy remains controversial and should be further clarified.info:eu-repo/semantics/publishedVersio

Major Pulmonary Surgery in Patients with Compromised Lung Function

Introduction: The risk stratification of lung resection is fundamentally based on the results of pulmonary function tests. In patients considered to be at risk, major surgery is generally denied, opting for potentially less curative therapies. Objective: To evaluate the postoperative outcomes of major lung surgery in a group of patients deemed high risk. Methods: We performed a retrospective review of clinical records of all patients submitted to lobectomy, bilobectomy or pneumonectomy in a 3-year period in a reference Thoracic Surgery Unit. The patients were then divided in two groups: group A composed of patients with normal preoperative pulmonary function and group B which included patients with impaired lung function, defined as FEV1 and/or DLCO ≤60%. Results: A total of 234 patients were included, 181 (77.4%) in group A and 53 (22.6%) in group B. In group B, patients had more smoking habits, were more often associated with chronic obstructive pulmonary disease and were also more frequently submitted to thoracotomy. When surgery was motivated by primary lung cancer this group had a more advanced clinical stage of the disease. In the postoperative period, these patients had longer hospital stay, longer chest drainage time and greater need for oxygen therapy at home, however, no statistically significant difference was noted in morbidity or mortality. Conclusions: Major thoracic surgery can be safely performed in selected patients considered to be high risk for resection by pulmonary function tests. A potentially curative surgery should not be denied based on respiratory function tests alone.info:eu-repo/semantics/publishedVersio

Registador de dados para aplicações de baixo consumo

Este artigo descreve uma arquitectura de um registador de dados para aplicações de baixo consumo. São apresentados resultados experimentais sobre o desempenho do oscilador, que é um dos módulos do registador. São ainda apresentadas estimativas do consumo do registador e dos respectivos módulos. A autonomia e a estabilidade são os critérios de projecto mais relevantes de um registador de dados para aplicações de baixo consumo que exijam precisão temporal, por exemplo a sismologia oceânica.info:eu-repo/semantics/publishedVersio