1,720,979 research outputs found
Evoluzione della chirurgia nella sindrome da ostruita defecazione
No full textIn questa breve revisione, dopo aver definito la sindrome da ostruita defecazione (SOD), per consentirne l’inquadramento e distinguerla da altri quadri nell’ambito del più generale problema della stipsi, spesso descritto come una “sindrome dell’iceberg”, forniremo alcuni cenni di diagnostica, fondamentali per la corretta selezione dei pazienti da operare e percorreremo le tappe storiche del trattamento chirurgico della SOD, dividendo l’argomento in tre capitoli: l’epoca antecedente la comparsa della resezione del retto per via transanale con doppia stapler (STARR), l’epoca della STARR e gli eventuali futuri sviluppi, discutendo su indicazioni, controindicazioni, risultati e complicanze delle tecniche descritte, allo scopo di fornire un piccolo compendio sullo stato dell’arte della chirurgia di questa frequente e complessa sindrome
La correzione chirurgica del rettocele anteriore : la nostra esperienza
No full textRectocele, or namely the protrusion of the anterior wall of the rectum into the vaginal lumen following the collapse of the rectovaginal septum, is the most common anatomic alteration observed in patients suffering from defecation disorders. The surgical treatment of this pathology is still controversial, particularly in the choice of the surgical approach. From 1992 to 1994 10 patients suffering from low type, symptomatic anterior rectocele associated with intrarectal intussusception underwent muscular plastic surgery of the rectocele and anterior mucosectomy. The aim of this study was to evaluate whether surgical muscular plastic of the rectocele using a transanal approach associated with anterior mucosectomy represents in selected symptomatic patients, a rational and elective therapeutic option. In spite of the small number of patients and the short postoperative follow-up, the authors state that, on the basis of the results obtained, the surgical technique used in this clinical series significantly improves symptoms with a lower incidence of complications compared to the transvaginal approac
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
Shunt spleno-renale distale selettivo versus porto-cava latero-laterale. Ulteriore analisi sulla encefalopatia e sopravvivenza
No full text
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
Improved quality of life after distal splenorenal shunt. A prospective comparison with side-to-side portacaval shunt
Full text linkThe distal splenorenal shunt (DSRS) was compared with the side-to-side portacaval shunt (PCS) in 93 prospectively matched patients with portal hypertension. After 38 months mean follow-up the two shunts had a different incidence of acute encephalopathy (22% in PCS group and 33% in DSRS group) and chronic encephalopathy (35% in PCS group and 17% in DSRS group), but the difference was not statistically significant. However, the only cases of severe and disabling chronic encephalopathy arose after PCS (p = 0.049). Actuarial curves of chronic encephalopathy showed that the maximum rate of encephalopathy (18%) in the DSRS group was reached 27 months after shunt surgery, whereas this value was reached and passed in PCS group only 4 months after shunt. Chronic encephalopathy occurred for a total duration of 20.1 months after PCS and only 11.1 months afer DSRS (p = 0.003) and occupied 46.3% of the follow-p of PCS patients, as contrasted to 18.7% of the follow-up of DSRS patients (p = 0.0001). DSRS is associated with a lower global incidence of chronic HE without severe forms and provides a better quality of life than does a nonselective shunt
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