995 resultados para circulatory support


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This study examined the impact of social support and of temporal and social comparisons on well-being and selfreported health in four capital cities: Paris, Berlin, Moscow and Beijing. Based on the lifespan control theory, an integrative model investigating the influence of these coping strategies, especially on the psychological regulation of health losses, was tested on 1141 respondents aged 45 to 70 years by using structural equation modelling with multigroup comparisons. Results indicated a good fit of the model to participants' responses. In all contexts, physical weaknesses favoured the use of social and temporal comparison strategies rather than social support. Moreover, across the cities, coping strategies were oriented more toward protecting self-evaluation of health than toward enhancement of well-being. Social comparison decreased the impact of physical weaknesses on health evaluation and on well-being in the four cities, but to a lesser extent in China. Results are discussed regarding the normative cross-cultural aspects that intervene during ageing in the four urban contexts.

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The severity of alcoholic hepatitis (AH) which may coexist with cirrhosis varies greatly, from asymptomatic forms which are detected in alcoholic patients without any sign of liver disease, except laboratory abnormalities, to severe forms characterised by deep jaundice, ascites, hepatic encephalopathy and low prothrombin index. In hospitalized patients the mortality could be as high as 75%. The elevated number of therapeutic proposals reported for more than forty years reveals the lack of efficacy of a particular modality. Even in the most favorable trials, the survival is already very poor and in some cases related to the development of renal failure or hepatorenal syndrome. There are some motivating reports concerning albumin dialysis as a support treatment in patients with severe AH, either alone or in combination with other pharmacological therapies. The favorable effects of albumin dialysis in patients with severe AH suggest that the procedure used alone or in combination with other therapies may have a role in this clinical condition. This will be particularly relevant to offer an alternative therapy in these patients, thus being a potential bridge to recovery or to be listed for liver transplantation.

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The results of recent large-scale clinical trials have led us to review our understanding of the metabolic response to stress and the most appropriate means of managing nutrition in critically ill patients. This review presents an update in this field, identifying and discussing a number of areas for which consensus has been reached and others where controversy remains and presenting areas for future research. We discuss optimal calorie and protein intake, the incidence and management of re-feeding syndrome, the role of gastric residual volume monitoring, the place of supplemental parenteral nutrition when enteral feeding is deemed insufficient, the role of indirect calorimetry, and potential indications for several pharmaconutrients.

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Coronary bypass grafting remains the best option for patients suffering from multivessel coronary artery disease, and the saphenous vein is used as an additional conduit for multiple complete revascularizations. However, the long-term vein graft durability is poor, with almost 75% of occluded grafts after 10 years. To improve the durability, the concept of an external supportive structure was successfully developed during the last years: the eSVS Mesh device (Kips Bay Medical) is an external support for vein graft made of weft-knitted nitinol wire into a tubular form with an approximate length of 24 cm and available in three diameters (3.5, 4.0 and 4.5 mm). The device is placed over the outer wall of the vein and carefully deployed to cover the full length of the graft. The mesh is flexible for full adaptability to the heart anatomy and is intended to prevent kinking and dilatation of the vein in addition to suppressing the intima hyperplasia induced by the systemic blood pressure. The device is designed to reduce the vein diameter of about 15-20% at most to prevent the vein radial expansion induced by the arterial blood pressure, and the intima hyperplasia leading to the graft failure. We describe the surgical technique for preparing the vein graft with the external saphenous vein graft support (eSVS Mesh) and we share our preliminary clinical results.

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Bulgaria is historically a multicultural society, composed of the Bulgarian (ethnic) majority and a number of ethnic minorities among which Bulgarian Turks and Roma are the largest. Both minority communities are stigmatized in contemporary Bulgaria, though to different degrees and for different reasons. Ethnic minorities' rights to preserve their culture, customs, and language are a topic of contentious debate. The purpose of this study was to examine individual- and context-level antecedents of the ethnic Bulgarian majority's support for multicultural rights of ethnic minorities. Multilevel regression analyses were conducted with International Social Survey Programme ISSP 2003 data (N = 920 in 28 Bulgarian districts). At the individual-level, an ethnic conception of the nation and anti-Roma symbolic prejudice were negatively related to support for multicultural rights, whereas national identification was positively related to the support of these rights. Over and above individual-level effects, and in line with recent extensions of intergroup contact theory, thepercentage ofBulgarianTurks withindistricts was positively related to support for multicultural rights. Importantly, support for multicultural rights was particularly high in districts characterized by ethnic diversity, that is, in districts with high proportions of both Bulgarian Turks and Roma. The beneficial effects of ethnic diversity and theoretical implications of findings are discussed.

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Problématique L'incidence du cancer ne cesse d'augmenter dans les pays occidentaux et en Suisse, en constituant la deuxième cause de mortalité après les maladies cardiovasculaires. Si d'une part, les différents traitements oncologiques ont le potentiel de guérir certains cancers et d'augmenter l'espérance de vie des personnes concernées, ils sont associés à de multiples problèmes physiques et psychosociaux. De même, l'annonce de la maladie provoque une fragilité émotionnelle et sociale et la phase de traitement qui suit le diagnostic de cancer est souvent associé à des besoins psychologiques et d'information élevés. But Cette étude vise à décrire les besoins en soins de support insatisfaits chez les patients nouvellement diagnostiqués d'un cancer, au cours d'un traitement ambulatoire dans un Hôpital Cantonal de la Suisse. Elle vise également à identifier les associations entre les besoins en soins de support insatisfaits et les caractéristiques sociodémographiques et médicales. Méthode Cette étude corrélationnelle descriptive a été conduite auprès de 67 patients nouvellement atteints d'un cancer primaire ou d'une récidive, recrutés selon un échantillonnage non probabiliste par convenance consécutive. Le questionnaire auto-administré comprenait le Supportive Care Needs Survey Short Form 34 et un questionnaire sur des données sociodémographiques. Les données médicales ont été collectées par les chercheurs à travers les dossiers médicaux. Résultats Les trois besoins exprimés comme les plus insatisfaits étaient « la peur que le cancer se propage » (48,5%), « l'incertitude face à l'avenir » (45,4%) et « vos préoccupations face à l'incertitude de vos proches » (43,9%). Nous constatons une insatisfaction plus élevée des besoins psychologiques (M: 32,6 ; ET: 20,4) et des besoins d'information (M: 29,3 ; ET: 17,5) par rapport aux autres dimensions de besoins. À propos des caractéristiques associées a un plus haut niveau de besoins insatisfaits, nous trouvons qu'être plus jeune (29-56 ans) ou âgés de > 72 ans est positivement associé aux besoins insatisfaits du domaine psychologique (F = 3,50 ; p = 0,02) et de l'information/système de santé (F = 3,48 ; p = 0,02). Le jeune âge est aussi associé à plus de besoins dans le domaine sexuel (F = 2,85 ; p = 0,04). Il semble exister une association négative entre le niveau d'instruction et le degré d'insatisfaction des besoins psychologiques (F = 2,92, p = 0,06). Être retraité coïncide avec un plus grand degré d'insatisfaction dans les besoins physiques et des activités de la vie quotidienne (F = 4,64 ; p = 0,013). Finalement, avoir un moins bon état général est relié à plus de besoins physiques et de besoins issus du domaine des activités de la vie quotidienne (t = -2,85 ; p = 0,005). Conclusions Les présents résultats concordent avec les études antérieures. Cette étude a la particularité d'avoir identifié les besoins insatisfaits durant la phase de traitement qui suit l'annonce du diagnostic, sans se restreindre à une maladie cancéreuse spécifique, ce qui a été peu effectué auparavant. Les chercheurs infirmiers devraient poursuivre, en collaboration avec d'autres professionnels de la santé, les recherches visant le développement d'approches efficaces pour réduire les besoins insatisfaits chez des personnes atteintes de maladies cancéreuses.

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Le propos général de ce mémoire est de déterminer pourquoi un nouveau patient choisit de prendre rendez-vous dans un centre dentaire et d'évaluer son niveau de satisfaction. L'étude est basée sur un questionnaire distribué lors du premier rendez-vous des nouveaux patients. Il est constitué de trois sections (socio-démographie, critères de choix, satisfaction) et est complété par le patient en deux phases, les parties socio-démographiques et critères de choix avant le traitement par le dentiste et la partie satisfaction après le traitement. L'échantillon de patients provient de deux centres dentaires ayant les mêmes exigences en termes d'accueil et de qualité des soins, l'un étant situé dans le canton de Zurich et l'autre dans le canton de Fribourg. [...] [Extrait p. 4]

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Un cas exemplaire, un cas d'école, un beau cas, un cas de figure, un cas extrême, un cas particulier, un cas épineux, un cas limite ... Les modalités de l'étude de cas sont multiples et expriment le fait que tout raisonnement suivi, toute explication, toute théorie bute une fois ou l'autre sur la nécessité d'explorer et d'approfondir les propriétés d'une singularité accessible à l'observation. Publier un ouvrage sur la question du cas unique, c'est participer à ce moment de réflexion sur les méthodes scientifiques en psychologie. C'est aussi oeuvrer à un repositionnement constructif de cette modalité de faire science, en donnant la parole aux auteurs spécialistes de ces questions ou directement concernés par celles-ci à travers leurs recherches ou leurs pratiques.

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Apart from its role as a flow generator for ventilation the diaphragm has a circulatory role. The cyclical abdominal pressure variations from its contractions cause swings in venous return from the splanchnic venous circulation. During exercise the action of the abdominal muscles may enhance this circulatory function of the diaphragm. Eleven healthy subjects (25 ± 7 year, 70 ± 11 kg, 1.78 ± 0.1 m, 3 F) performed plantar flexion exercise at ~4 METs. Changes in body volume (ΔVb) and trunk volume (ΔVtr) were measured simultaneously by double body plethysmography. Volume of blood shifts between trunk and extremities (Vbs) was determined non-invasively as ΔVtr-ΔVb. Three types of breathing were studied: spontaneous (SE), rib cage (RCE, voluntary emphasized inspiratory rib cage breathing), and abdominal (ABE, voluntary active abdominal expiration breathing). During SE and RCE blood was displaced from the extremities into the trunk (on average 0.16 ± 0.33 L and 0.48 ± 0.55 L, p < 0.05 SE vs. RCE), while during ABE it was displaced from the trunk to the extremities (0.22 ± 0.20 L p < 0.001, p < 0.05 RCE and SE vs. ABE respectively). At baseline, Vbs swings (maximum to minimum amplitude) were bimodal and averaged 0.13 ± 0.08 L. During exercise, Vbs swings consistently increased (0.42 ± 0.34 L, 0.40 ± 0.26 L, 0.46 ± 0.21 L, for SE, RCE and ABE respectively, all p < 0.01 vs. baseline). It follows that during leg exercise significant bi-directional blood shifting occurs between the trunk and the extremities. The dynamics and partitioning of these blood shifts strongly depend on the relative predominance of the action of the diaphragm, the rib cage and the abdominal muscles. Depending on the partitioning between respiratory muscles for the act of breathing, the distribution of blood between trunk and extremities can vary by up to 1 L. We conclude that during exercise the abdominal muscles and the diaphragm might play a role of an "auxiliary heart."

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Extracorporeal assistances are exponentially used for patients, with acute severe but reversible heart or lung failure, to provide more prolonged support to bridge patients to heart and/or lung transplantation. However, experience of use of extracorporeal assistance for pulmonary resection is limited outside lung transplantation. Airways management with standard mechanical ventilation system may be challenging particularly in case of anatomical reasons (single lung), presence of respiratory failure (ARDS), or complex tracheo-bronchial resection and reconstruction. Based on the growing experience during lung transplantation, more and more surgeons are now using such devices to achieve good oxygenation and hemodynamic support during such challenging cases. We review the different extracorporeal device and attempt to clarify the current practice and indications of extracorporeal support during pulmonary resection.

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Peer-reviewed

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Real-time predictions are an indispensable requirement for traffic management in order to be able to evaluate the effects of different available strategies or policies. The combination of predicting the state of the network and the evaluation of different traffic management strategies in the short term future allows system managers to anticipate the effects of traffic control strategies ahead of time in order to mitigate the effect of congestion. This paper presents the current framework of decision support systems for traffic management based on short and medium-term predictions and includes some reflections on their likely evolution, based on current scientific research and the evolution of the availability of new types of data and their associated methodologies.