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Radius surgical system and conventional laparoscopic instruments in abdominal surgery: application, learning curve and ergonomy
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Staple-line reinforcement during laparoscopic sleeve gastrectomy using three different techniques: A randomized trial
Get PDFThe main drawback of laparoscopic sleeve gastrectomy (LSG) is the severity of postoperative complications. Staple line reinforcement (SLR) is strongly advocated. The purpose of this study was to compare prospectively and randomly three different techniques of SLR during LSG.From April 2010 to April 2011, patients submitted to LSG were randomly selected for the following three different techniques of SLR: oversewing (group A); buttressed transection with a polyglycolide acid and trimethylene carbonate (group B); and staple-line roofing with a gelatin fibrin matrix (group C). Primary endpoints were reinforcement operative time, incidence of postoperative staple-line bleeding, and leaks. Operative time was calculated as follows: oversewing time in group A; positioning of polyglycolide acid and trimethylene carbonate over the stapler in group B; and roofing of the entire staple line in group C.A total of 120 patients were enrolled in the study (82 women and 38 men). Mean age was 44.6 +/- A 9.2 (range, 28-64) years. Mean preoperative body mass index was 47.2 +/- A 6.6 (range, 40-66) kg/mA(2). Mean time for SLR was longer in group A (14.2 +/- A 4.2 (range, 8-18) minutes) compared with group B (2.4 +/- A 1.8 (range, 1-4) minutes) and group C (4.4 +/- A 1.6 (range, 3-6) minutes; P < 0.01). Four major complications were observed (3.3 %): one leak and one bleeding in group A; one bleeding in group B; and one leak in group C, with no significant differences between the groups. No mortality was observed.SLR with either polyglycolide acid with trimethylene carbonate or gelatin fibrin matrix is faster compared with oversewing. No significant differences were observed regarding postoperative staple-line complications
Laparoscopi Treatment of a Huge Mesenteric Chylous Cyst
No full textMesenteric chylous cysts are rare pathologic entities that often present with unspecific symptoms.The preoperative diagnosis requires all the common abdominal imaging techniques, but usually the correct diagnosis may be made only at the operation stage or during the histological examination. The treatmen of choice is the complete surgical excision that may be safely performed by laparoscopy. A 58-year-old man underwent laparoscopic excision of a huge mesenteric chylous cyst. The technique entails the perfect control of the major abdominal vessels running near the tumor and the complete sealing of the chylous and blood vessels to and from the cyst
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
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