bronchial tree or after endoscopic dilatation of a benign anastomotic stricture. Other causative factors have only been reported as solitary cases. 4 Among these, we have found in the literature just 1 other case in which the tracheogastric fistula presented in association with an auto-expandable esophageal wall-stent prosthesis. 5 Symptoms at presentation may range from mild to life-threatening. 3,4 Yet the possibility of a rapid deterioration of the patient's general condition should always be kept in mind. Just on suspicion, a barium esophagogram should promptly be performed for diagnosis. Treatment is always challenging and has to be individually tailored. It will depend on the severity of symptoms, on the size and location of the fistula, and on accompanying conditions. If surgery is required, the procedure of choice is excision of the fistula and closure of the tracheal and esophageal defects. Interposition of a pedicled pleural, omental, or muscle flap has proved to be useful in preventing recurrence of the fistula. The gastric tube should be left in place unless judged as an unviable option. In such case, colonic interposition is indicated to restore the continuity of the gastrointestinal tract. If mediastinitis is present, elimination of the septic focus and extensive drainage of the mediastinum are mandatory. 3,4

Autor a quien debe ser dirigida la correspondencia. ResumenEste artículo presenta un proceso de vigilancia tecnológica que considera las actividades asociadas al proceso de realizar revisiones sistemáticas de literatura. La vigilancia tecnológica forma parte del sistema de gestión de innovación e investigación en contextos industriales. La propuesta tiene como objetivo el brindar acceso, gestión y contextualización de conocimientos científicos y técnicos que están a la vanguardia en tecnologías de soporte a la estrategia del negocio. Las revisiones sistemáticas de la literatura consideran un proceso detallado para estudiar los avances en un campo particular del conocimiento. Este tipo de revisiones constituye un facilitador de procesos efectivos de vigilancia tecnológica. El carácter innovador del proceso que se presenta es bidimensional. Por una parte se integran buenas prácticas para realizar vigilancia tecnológica y revisiones sistemáticas, y por otra se propone una herramienta de soporte (LOXO) para la ejecución de procesos de vigilancia tecnológica. Palabras clave: vigilancia tecnológica; revisiones sistemáticas de literatura; buenas prácticas; herramienta de soporte; contextos industrialesAbstract This paper presents a technology surveillance process that takes into account activities associated with the process of conducting systematic literature reviews. Technology surveillance is a part of the research and innovation management system in industrial contexts. The aim of the proposal is to provide access, management and contextualization of scientific and technical knowledge to be at the forefront of technologies for supporting business strategy. Systematic literature reviews consider a detailed process to study the state of the art in a particular field of knowledge. This type of reviews constitutes a facilitator of effective technology surveillance processes. The innovative nature of the process is two-fold. On the one hand, integrates best practices to carry out technology forecasting and systematic literature reviews and on the other, a support tool (LOXO) is proposed for the execution of technology surveillance processes.

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A percepção de sabor é fator importante relacionado à qualidade de vida dos indivíduos. Distúrbios dessa percepção podem levar ao consumo de substâncias tóxicas ou ao consumo exagerado de substâncias que podem interferir no tratamento de doenças, como sal na hipertensão e açúcar no diabetes. Esta percepção ocorre pela união dos sentidos químicos (gosto e olfato) com as sensações táteis. As principais responsáveis são as papilas gustativas, presentes nos órgãos de entrada no sistema digestório. Esta sensação é variável de acordo com o estado psicológico e cultural do indivíduo e tem grande importância no desenvolvimento e determinação da qualidade de produtos alimentícios. Esse artigo busca reunir conhecimentos atuais sobre a percepção de sabor e limiar de percepção.

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