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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Pneumonies nosocomiales acquises sous ventilation mécanique : prédiction du diagnostic et influence sur le pronostic

Nguile Makao, Molière 05 November 2010 (has links) (PDF)
La pneumonie nosocomiale est l'infection la plus fréquente et la plus grave rencontrée en réanimation, notamment chez les patients sous ventilation mécanique invasive. L'objectif de ces travaux de thèse est d'élaborer des outils d'optimisation de la prévention des Pneumonies nosocomiales Acquises sous Ventilation Mécanique (PAVM) en utilisant les informations de la base de donnée OUCOMEREA. Ainsi, un score de PAVM a été construit à partir d'une régression logistique hiérarchique mixte à effet aléatoire permettant de comparer les structures de soin. Le modèle de régression logistique présentant quelques insuffisances, nos travaux ont été orientés vers les modèles multi-états. En particulier, nous avons étudié le modèle Progressive Disability à partir duquel la mortalité attribuable à la PAVM a été évaluée efficacement et les groupes de patients ayant une mortalité imputable très élevée ont été identifié. Ce modèle a été simplifié en modèle Disability. Par la suite, les covariables sont incluses via l'estimateur de Breslow et la mortalité imputable est ré-estimée. A partir du modèle Disability, une prédiction globale et individualisée de la PAVM dans les trois jours qui suivent l'instant d'observation est construite. La performance de la prédiction est évaluée par une fonction de perte pondérée par la fréquence des évènements au cours du temps.
2

Procedimento Operacional Padrão (POP) de higiene bucal na prevenção de pneumonia associada à ventilação mecânica - PAVM, em Unidade de Terapia Intensiva Estudo não randomizado, aberto, com avaliador cego. /

De Luca, Fernando Augusto. January 2019 (has links)
Orientador: Alessandro Lia Mondelli / Resumo: Introdução: Um dos problemas relacionados à internação em Unidades de Terapia Intensiva (UTI), diz respeito à condição bucal dos pacientes. Falta ou deficiência de higiene bucal podem levar a quadros de infecção por microrganismos patogênicos, sendo a principal delas, a pneumônica associada à ventilação mecânica (PAVM). Procedimentos Operacionais Padrão - POP de higiene bucal nem sempre são seguidos à risca, além de não contarem, na maioria das vezes, com a participação de cirurgião dentista em suas elaborações. Diante desse quadro, o objetivo desse trabalho é a criação de novo protocolo de higiene bucal para pacientes internados e intubados no Serviço de Terapia Intensiva (SETI) do Hospital das Clínicas da Faculdade de Medicina de Botucatu – UNESP e avaliar seu impacto na prevenção de PAVM. Materiais e métodos: Foram estudados 72 pacientes divididos em dois grupos: estudo, internados na Ala 1 do SETI, e controle, internados na ala 2 do SETI. Critérios de inclusão: pacientes em ventilação mecânica a no máximo 24 horas e que permaneceram nessa condição por período mínimo de 96 horas, idade mínima de 18 anos. Critérios de exclusão: neoplasias sob quimioterapia, imunossuprimidos, extubação (voluntária ou não) ou óbito antes do prazo mínimo de 96 horas. No grupo de estudo, foi realizada higiene bucal com clorexidina 0,12% líquida, 2 X dia, de acordo com o procedimento operacional padrão desenvolvido; no grupo controle, a higiene bucal foi realizada de acordo com o procedimento op... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Introduction: One of the problems related to hospitalization in Intensive Care Units (ICU) is the patients' oral condition. Absence or deficiency of oral hygiene may lead to infection by pathogenic microorganisms, the main one being ventilator-associated pneumonia (VAP). Oral hygiene standard operating procedures are not always followed to the letter, and in most cases, dental surgeon do not participate in its elaborations. In view of this situation, the objective of this work is the creation of a new oral hygiene standard operational procedure for hospitalized and intubated patients at the Intensive Care Unit of the Hospital das Clínicas of Botucatu Medical School - UNESP and evaluation of its impact on the prevention of VAP. Materials and methods: We studied 72 patients divided into two groups: study, hospitalized in ICU Ward 1, and control, hospitalized in Ward 2 of the ICU. Inclusion criteria: patients on mechanical ventilation for, at most, 24 hours and who remained in this condition for a minimum period of 96 hours, minimum age of 18 years. Exclusion criteria: neoplasms under chemotherapy, immunosuppressed, extubated (voluntary or not) or death before the minimum period of 96 hours. In the study group, oral hygiene was performed with chlorhexidine 0.12% liquid, 2 times a day, according to the standard operational procedure developed; in the control group, oral hygiene was performed according to the standard operational procedure existing in Hospital das Clínicas for ICU... (Complete abstract click electronic access below) / Mestre
3

Ein Beitrag zur Problematik der Integration virtueller Maschinen / A contribution to the problem of integrating virtual machines

Kugel, Rudolf January 2005 (has links)
Moderne Softwaresysteme sind komplexe Gebilde, welche häufig im Verbund mit anderen technischen und betriebswirtschaftlichen Systemen eingesetzt werden. Für die Hersteller solcher Systeme stellt es oft eine große Herausforderung dar, den oft weit reichenden Anforderungen bezüglich der Anpassbarkeit solcher Systeme gerecht zu werden. Zur Erfüllung dieser Anforderungen hat es sich vielfach bewährt, eine virtuelle Maschine in das betreffende System zu integrieren. <br><br> Die Dissertation richtet sich insbesondere an Personen, die vor der Aufgabe der Integration virtueller Maschinen in bestehende Systeme stehen und zielt darauf ab, solche für die Entscheidung über Integrationsfragen wichtigen Zusammenhänge klar darzustellen. <br><br> Typischerweise treten bei der Integration einer virtuellen Maschine in ein System eine Reihe unterschiedlicher Problemstellungen auf. Da diese Problemstellungen oft eng miteinander verzahnt sind, ist eine isolierte Betrachtung meist nicht sinnvoll. Daher werden die Problemstellungen anhand eines zentral gewählten, sehr umfangreichen Beispiels aus der industriellen Praxis eingeführt. Dieses Beispiel hat die Integration der "Java Virtual Machine" in den SAP R/3 Application Server zum Gegenstand. Im Anschluss an dieses Praxisbeispiel wird die Diskussion der Integrationsproblematik unter Bezug auf eine Auswahl weiterer, in der Literatur beschriebener Integrationsbeispiele vertieft. <br><br> Das Hauptproblem bei der Behandlung der Integrationsproblematik bestand darin, dass die vorgefundenen Beschreibungen, der als Beispiel herangezogenen Systeme, nur bedingt als Basis für die Auseinandersetzung mit der Integrationsproblematik geeignet waren. Zur Schaffung einer verwertbaren Diskussionsgrundlage war es daher erforderlich, eine homogene, durchgängige Modellierung dieser Systeme vorzunehmen. Die Modellierung der Systeme erfolgte dabei unter Verwendung der "Fundamental Modeling Concepts (FMC)". Die erstellten Modelle sowie die auf Basis dieser Modelle durchgeführte Gegenüberstellung der unterschiedlichen Ansätze zur LÖsung typischer Integrationsprobleme bilden den Hauptbeitrag der Dissertation. <br><br> Im Zusammenhang mit der Integration virtueller Maschinen in bestehende Systeme besteht häufig der Bedarf, zeitgleich mehrere "Programme" durch die integrierte virtuelle Maschine ausführen zu lassen. Angesichts der Konstruktionsmerkmale vieler heute verbreiteter virtueller Maschinen stellt die Realisierung eines "betriebsmittelschonenden Mehrprogrammbetriebs" eine große Herausforderung dar. Die Darstellung des Spektrums an Maßnahmen zur Realisierung eines "betriebsmittelschonenden Mehrprogrammbetriebs" bildet einen zweiten wesentlichen Beitrag der Dissertation. / Modern software systems are complex entities which are frequently linked to other technical and economic systems. For the manufacturers of such systems it often represents a big challenge to fulfill the demanding requirements concerning the adaptability of such systems. One possible way to meet the demands is to integrate a virtual machine into the system concerned. <br><br> This thesis is primarily intended to be used by persons who intend to integrate a virtual machine into an existing system. The primary goal is to pinpoint those dependencies which are important for decisions about integration questions. <br><br> The integration of a virtual machine into an existing system is typically accompanied by many different problems. Since these problems are often closely interconnected, it often makes no sense to treat them individually. Therefore, the problems are introduced along with an adequately chosen, complex real life example. This example deals with the integration of the "Java Virtual Machine" into the "SAP R/3" application server. Following this practical example, the discussion of integration problems is deepened by presenting an assortment of additional examples taken from the literature. <br><br> The main problem encountered during the treatment of the integration process was caused by inadequate and incomparable descriptions of the samples used. The existing descriptions were therefore unsuitable as a basis of discussion for the integration topic. For a useful discussion, it was necessary to prepare a uniform and sound modeling of these systems. This was done by adopting the "Fundamental Modeling Concepts (FMC)" technique. The created models as well as the comparison of the different approaches that can be used to solve typical integration problems form the main contribution of the thesis. <br><br> The integration of virtual machines into existing systems is frequently accompanied by the requirement to have the integrated virtual machine process several "programs" simultaneously. In view of the design features of many common virtual machines, the realization of a virtual machine integration that allows the integrated virtual machine to be operated in "multiprogram" mode is still challenging. The most challenging task in this context is the problem of keeping the resource usage of the system at a tolerable level. A comparison of measures that can be taken to reduce the resource usage of an integrated virtual machine that can be operated in "multiprogram" mode forms a second essential contribution of the thesis.

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