1,720,975 research outputs found
Do We Need Heparin Coating for Extracorporeal Membrane Oxygenation? New Concepts and Controversial Positions About Coating Surfaces of Extracorporeal Circuits
No full textBlood contact with surfaces of the extracorporeal circuit provokes the activation of the coagulation system. To improve biocompatibility of the extracorporeal circuit without increasing the risk of bleeding, coatings of artificial surfaces were designed; many of them involve the use of heparin. Data in the literature show that heparin-induced thrombocytopenia is a major issue in the extracorporeal membrane oxygenation scenario, and no relevant benefits have been shown comparing heparin and no-heparin coating
Ultrasound-accelerated thrombolysis and extracorporeal membrane oxygenation in a patient with massive pulmonary embolism and cardiac arrest
No full text
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
Two different endoscopic procedures made feasible by the Janus mask in a high-risk patient
No full textThe Janus mask is a full face mask designed for providing noninvasive ventilation (NIV) during any kind of upper endoscopies (e.g., fiber-optic bronchoscopy, gastrointestinal endoscopy, and transesophageal echocardiography). Due to its unique conformation, its use can be considered for both elective and urgent endoscopic procedures in high-risk patients. In this case report, we present a patient with acute respiratory failure who underwent two consecutive different endoscopic procedures (fiber-optic bronchoscopy and gastrointestinal endoscopy) during continuous positive airway pressure support by means of this novel NIV mask, thus avoiding tracheal intubation and at the same time, improving his respiratory condition
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
Publication trends in the journal of cardiothoracic and vascular anesthesia: A 10-year analysis
No full textObjective Good quality clinical research in anesthesiology is now performed all over the world. The aim of this article was to present and analyze the scientific contributions published in the Journal of Cardiothoracic and Vascular Anesthesia and to give a structured view focused on the countries where these studies were performed. Design Bibliometric analysis. Setting Teaching hospital. Participants None. Interventions The authors analyzed the geographic distribution of the authors publishing in cardiac anesthesia. Measurements and Main Results Data were obtained from the Scopus database. All works belonging to document-type articles, reviews, letters, and editorials published over a 10-year period (2000-2009) in the Journal of Cardiothoracic and Vascular Anesthesia (JCVA) were tracked. For each article, the country of origin of the corresponding author was retrieved. JCVA published 1,816 articles from 45 different countries. The United States accounted for 43.8% of the total, followed by India (8.3%), Germany (5.5%), United Kingdom (4.7%), and Italy (4.4%). Conclusions JCVA has a widespread influence and receives contributions from all over the world. More and more biomedical research is conducted outside North America and Europe, with India leading the group of "rest of the world" countries. The recent development of Asian countries clearly challenges North America and European countries that can no longer ignore the scientific contribution from these parts of the world. With this in mind, some journals such as JCVA are giving voice to these prolific countries, which represents a fundamental forum for these newcomers to the field of cardiac anesthesia. © 2010 Elsevier Inc
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
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