1,720,974 research outputs found
Anatomy of aortic atresia. Cases presenting with a ventricular septal defect.
No full textThe anatomy of 58 specimens of aortic outflow tract atresia was studied. All cases had situs solitus and levocardia, 37 had atrioventricular (AV) concordance, two had common inlet to a right ventricle and 19 had mitral atresia. The great arteries were normally interrelated in all cases. Fifty-one cases had an intact ventricular septum, while seven presented with a ventricular septal defect (VSD). Of the seven with VSD, in two it was associated with a common AV orifice draining exclusively into the right ventricle in the presence of a rudimentary left ventricular chamber. In one case a small VSD accompanied combined mitral and aortic atresia. In the other four cases the left ventricles and mitral valves were fairly normal in size; the VSD was subpulmonary in three cases, due to infundibuloventricular malalignment, and perimembranous in one. These last four cases are of particular interest since they could be amenable to surgical correction. Possible approaches to surgical treatment and morphologic features pertinent to them are described and discussed
Non-invasive assessment of pulmonary blood supply after staged repair of pulmonary atresia.
No full textDigitalis toxicity and digoxin blood levels in children [Tossicità digitalica e digitalemia in età pediatrica]
No full textDigoxin serum levels in 41 children with clinical and/or ECG symptoms of digitoxicity were determined by radioimmunoassay and compared to the normal values. 54% of the cases showed a good relationship between clinical and/or ECG signs of toxicity and digoxin levels; on the contrary, 29% of patients exhibited only clinical and/or ECG signs of toxicity with normal digoxin levels and 17% of patients had high digoxin levels without signs of toxicity. The significance and possible causes of this relative discrepancy are discussed
A strategic pediatric alliance for the future health of children in Europe.
No full textEuropean health care systems need to adapt to ongoing financial pressures, while at the same time evolving better
to suit changing health care needs of children as chronic conditions become increasingly dominant problems.2 For example, in response to current global economic pressures, many countries are considering changing from a pediatriciandelivered primary care system to a general practitioner model as a cost-cutting exercise, rather than in response to evidence about quality. Different possible “extreme scenarios” have been described1 in response to the likelihood that substantial changes in health care will unfold for European healthcare in the next 20 years. Three of these scenarios include: (1) European nations joining forces to create a single pan-European healthcare system; (2) preventive medicine taking precedence over acute care for sick patients; and (3) European healthcare systems focusing on vulnerable members of society. These scenarios are proposed and analyzed in this article by the strategic pediatric alliance for the future health of children in Europe consortium (SPA
A Strategic Pediatric Alliance for the future helath of children in Europe
No full textEuropean health care systems need to adapt to ongoing financial pressures, while at the same time evolving better to suit changing health care needs of children as chronic conditions become increasingly dominant problems.2 For example, in response to current global economic pressures, many countries are considering changing from a pediatriciandelivered primary care system to a general practitioner model as a cost-cutting exercise, rather than in response to evidence about quality. Different possible “extreme scenarios” have been described1 in response to the likelihood that substantial changes in health care will unfold for European healthcare in the next 20 years. Three of these scenarios include: (1) European nations joining forces to create a single pan-European healthcare system; (2) preventive medicine taking precedence over acute care for sick patients; and (3) European healthcare systems focusing on vulnerable members of society. These scenarios are proposed and analyzed in this article by the strategic pediatric alliance for the future health of children in Europe consortium (SPA
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
Tricuspid atresia versus other complex lesions. Comparison of results with a modified Fontan procedure.
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