1,720,959 research outputs found
Large Volume, Ice-cold Intravenous Fluid for Therapeutic Hypothermia Does Not Compromise the Respiratory Situation in Patients after Cardiac Arrest
No full textTherapeutic Hypothermia Improves Myocardial Function and Stabilizes Hemodynamic Parameters in Patients After Cardiac Arrest
No full textEffects of large volume, ice-cold intravenous fluid infusion on respiratory function in cardiac arrest survivors
No full textInternational guidelines for cardiopulmonary resuscitation recommend mild hypothermia (32-34 degrees C) for 12-24 h in comatose survivors of cardiac arrest. To induce therapeutic hypothermia a variety of external and intravascular cooling devices are available. A cheap and effective method for inducing hypothermia is the infusion of large volume, ice-cold intravenous fluid. There are concerns regarding the effects of rapid infusion of large volumes of fluid on respiratory function in cardiac arrest survivors. We have retrospectively studied the effects of high volume cold fluid infusion on respiratory function in 52 resuscitated cardiac arrest patients. The target temperature of 32-34 degrees C was achieved after 4.1 +/- 0.5 h (cooling rate 0.48 degrees C/h). During this period 3427 +/- 210 mL ice-cold fluid was infused. Despite significantly reduced LV-function (EF 35.8 +/- 2.2%) the respiratory status of these patients did not deteriorate significantly. On intensive care unit admission the mean PaO(2). was 231.4 +/- 20.6 mmHg at a F(i)O(2) of 0.82 +/- 0.03 (PaO(2)/F(i)O(2) = 290.0 +/- 24.1) and a PEEP level of 7.14 +/- 0.31 mbar. Until reaching the target temperature of <= 34 degrees C the F(i)O(2) could be significantly reduced to 0.63 +/- 0.03 with unchanged PEEP level (7.23 +/- 0.36 mbar). Under these conditions the PaO(2)/F(i)O(2) ratio slightly decreased to 247.5 +/- 18.5 (P = 0.0893). Continuing the saline infusion to achieve a body temperature of 33 degrees C, the F(i)O(2) Could be further reduced with unchanged PEEP. The infusion of large volume, ice-cold fluid is an effective and inexpensive method for inducing therapeutic hypothermia. Resuscitation from cardiac arrest is associated with a deterioration in respiratory function. The infusion of large Volumes of cold fluid does not cause a statistically significant further deterioration in respiratory function. A larger, randomized and prospective study is required to assess the efficacy and safety of ice-cold fluid infusion for the induction of therapeutic hypothermia. (C) 2009 Elsevier Ireland Ltd. All rights reserved
Large Volume, Ice-cold Intravenous Fluid for Therapeutic Hypothermia Does Not Compromise the Respiratory Situation in Patients after Cardiac Arrest
No full textTrends in Postresuscitation Care: A 7-Year Experience After Implementation of Therapeutic Hypothermia
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
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
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