1,720,986 research outputs found
Nouvelles perspectives diagnostiques et thérapeutiques dans la prise en charge rythmologique des patients en situation d'insuffisance cardiaque
No full textHeart failure is a major public health issue in developed countries, with a prevalence of 1-2% of global population, rising to 10% after 70 years of age. Therapeutic progresses have succeeded in improving patients’ prognosis, particularly in case of reduced left ventricular ejection fraction. Rhythm abnormalities are frequent, and need special consideration in case of heart failure. Meanwhile, there are still some gaps in the evidence: heart failure with preserved systolic function is complex and difficult to treat, primary prevention of sudden cardiac death is effective but there is a need to better select candidates, whether elderly patients should be treated as younger individuals, and finally how to improve outcomes of atrial fibrillation catheter ablation. Firstly, we have conducted a prospective study to evaluate the Sleep Apnea Monitoring algorithm provided in a novel pacemaker in patients with diastolic dysfunction. Besides, we analyzed whether magnetic resonance imaging could predict cardiac outcomes in patients with an implantable cardioverter defibrillator better than echocardiography. We also reported the outcomes of the cardiac resynchronization therapy in patients ≥75 years old compared to younger patients. Finally, we studied the results of a novel ultra-high density mapping system to guide ablation procedures of complex atrial arrhythmias in heart failure patients compared to controls.L’insuffisance cardiaque est un problème de santé publique dans les pays développés, touchant 1 à 2% de la population générale, mais dont la prévalence atteint 10% après 70 ans. Les progrès thérapeutiques ont permis d’améliorer le pronostic des patients, notamment ceux ayant une altération de la fonction systolique ventriculaire gauche. Les troubles du rythme sont fréquents et nécessitent une pris en charge particulière au cours des situations d’insuffisance cardiaque. Cependant, il reste des questions non résolues : comment améliorer l’efficacité du traitement de l’insuffisance cardiaque à fonction systolique préservée, comment mieux sélectionner les patients pouvant bénéficier de la prévention primaire de la mort subite par un défibrillateur implantable, les patients âgés peuvent-ils bénéficier de la même prise en charge que les patients plus jeunes, et pour finir comment améliorer les résultats de l’ablation de fibrillation auriculaire dans les situations d’insuffisance cardiaque. Nous avons mis en place une étude prospective chez des patients présentant une dysfonction diastolique pour évaluer l’intérêt de l’algorithme de surveillance de l’apnée du sommeil disponible dans des stimulateurs cardiaques. En parallèle, nous avons analysé l’impact de l’évaluation par résonance magnétique des patients candidats à un défibrillateur sur la prédiction des évènements rythmiques, mais aussi le devenir des patients de plus de 75 ans appareillés avec un système de resynchronisation cardiaque. Enfin, nous nous sommes intéressés aux résultats d’un nouveau système de cartographie électroanatomique ultra-haute densité pour guider les procédures d’ablation de troubles du rythme supraventriculaires complexes chez des patients insuffisants cardiaques comparés à des patients contrôles
Heart failure management from the electrophysiologist’s point of view : perspectives in diagnostic and therapeutic approach
No full textL’insuffisance cardiaque est un problème de santé publique dans les pays développés, touchant 1 à 2% de la population générale, mais dont la prévalence atteint 10% après 70 ans. Les progrès thérapeutiques ont permis d’améliorer le pronostic des patients, notamment ceux ayant une altération de la fonction systolique ventriculaire gauche. Les troubles du rythme sont fréquents et nécessitent une pris en charge particulière au cours des situations d’insuffisance cardiaque. Cependant, il reste des questions non résolues : comment améliorer l’efficacité du traitement de l’insuffisance cardiaque à fonction systolique préservée, comment mieux sélectionner les patients pouvant bénéficier de la prévention primaire de la mort subite par un défibrillateur implantable, les patients âgés peuvent-ils bénéficier de la même prise en charge que les patients plus jeunes, et pour finir comment améliorer les résultats de l’ablation de fibrillation auriculaire dans les situations d’insuffisance cardiaque. Nous avons mis en place une étude prospective chez des patients présentant une dysfonction diastolique pour évaluer l’intérêt de l’algorithme de surveillance de l’apnée du sommeil disponible dans des stimulateurs cardiaques. En parallèle, nous avons analysé l’impact de l’évaluation par résonance magnétique des patients candidats à un défibrillateur sur la prédiction des évènements rythmiques, mais aussi le devenir des patients de plus de 75 ans appareillés avec un système de resynchronisation cardiaque. Enfin, nous nous sommes intéressés aux résultats d’un nouveau système de cartographie électroanatomique ultra-haute densité pour guider les procédures d’ablation de troubles du rythme supraventriculaires complexes chez des patients insuffisants cardiaques comparés à des patients contrôles.Heart failure is a major public health issue in developed countries, with a prevalence of 1-2% of global population, rising to 10% after 70 years of age. Therapeutic progresses have succeeded in improving patients’ prognosis, particularly in case of reduced left ventricular ejection fraction. Rhythm abnormalities are frequent, and need special consideration in case of heart failure. Meanwhile, there are still some gaps in the evidence: heart failure with preserved systolic function is complex and difficult to treat, primary prevention of sudden cardiac death is effective but there is a need to better select candidates, whether elderly patients should be treated as younger individuals, and finally how to improve outcomes of atrial fibrillation catheter ablation. Firstly, we have conducted a prospective study to evaluate the Sleep Apnea Monitoring algorithm provided in a novel pacemaker in patients with diastolic dysfunction. Besides, we analyzed whether magnetic resonance imaging could predict cardiac outcomes in patients with an implantable cardioverter defibrillator better than echocardiography. We also reported the outcomes of the cardiac resynchronization therapy in patients ≥75 years old compared to younger patients. Finally, we studied the results of a novel ultra-high density mapping system to guide ablation procedures of complex atrial arrhythmias in heart failure patients compared to controls
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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