1,720,963 research outputs found
Reconstructive microsurgery of lymph vessels: The personal method of lymphatic-venous-lymphatic (LVL) interpositioned grafted shunt
No full textOur clinical observations in 64 patients affected by chronic obstructive lymphedema (either arm or leg) undergoing interposition autologous lymphatic- venous-lymphatic (LVL) anastomoses are reported. This microsurgical technique is an alternative to other lymphatic shunting methods, especially when venous dysfunction coexists in the same limb and, therefore, when direct lymphatic- venous anastomosis is accordingly inadequate. Preoperative diagnostic evaluation (including lymphatic and venous isotopic scintigraphy, Doppler venous flowmetrics, and pressure manometry) plays an essential role in assessing the conditions of both the lymphatic and venous systems and in establishing which microsurgical procedure, if any, is indicated. Our microsurgical technique consists of inserting suitably large and lengthy autologous venous grafts between lymphatic collectors above and below the site of obstruction to lymph flow. The data show that, using this technique, both limb function and edema improved, and in all patients followed up for over 5 years edema regression was permanent
Derivative lymphatic microsurgery: indications, techniques, and results.
No full textMicrosurgical derivative procedures to treat chronic lymphedemas of the limbs are reported here. Techniques used consisted of lymphatic capsule- venous anastomoses (in pediatric patients) and end-to-side lymphatic-venous anastomoses. Results after more than 5 years showed improvement in about 70% of the cases. The importance of an accurate preoperative diagnostic evaluation and the precise indications for these microsurgical procedures are discussed. Some personal modifications of derivative microsurgical techniques and their advantages are also pointed out
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
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