1,720,956 research outputs found
[Visual identification of the recurrent laryngeal nerve during thyroidectomy].
No full textAbstract
INTRODUCTION:
Injuries to the recurrent laryngeal nerve (RLN) are always a possible complication of thyroidectomy, in spite of various technical proposals aimed at reducing these risks. The aim of this study is the description of the technical methods used by us for identification.
MATERIALS AND METHODS:
One hundred seventy-five patients underwent thyroidectomy with a technique consisting in a systematic search of the RLN in the tracheoesophageal groove where it crosses the ITA avoiding ligatures, sections or electro-coagulation before making a definite identification of the nerve which then takes place and is then safeguarded until laryngeal insertion.
RESULTS:
In 95.4% of the cases total thyroidectomy was performed and in 4.6% of the cases a hemi-thyroidectomy, with a total of 342 identifications of the RLN. In two cases (1.14%) the laryngeal nerve was non-recurrent. There was no operative mortality. There were no bilateral lesions of the RLN, while unilateral lesions occurred in 2.8% of cases (5/175) of which 3 (1.7%) with temporary vocal deficit.
DISCUSSION:
We examined the different methods used to facilitate the identification of the nerve including: palpatory method, peri-tracheal excision, use of loupe magnification, intraoperative nerve monitoring (IONM). None of the procedures examined showed a genuine reduction to the risk of injury. The authors emphasize that the visual identification, using the methods they described, allows the visualization and preservation of the nerve for the majority of the cases.
CONCLUSION:
Taking into consideration that the various methods of preservation of the RLN have not significantly reduced the risk of injury, the visual identification with specific measures has made it possible to limit the damage to a very low number of cases
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
Integrated multidisciplinary treatment of colorectal neoplasms
No full textn this retrospective study, the modality and advantages of the multidisciplinary diagnostic work-up and therapy regarding colorectal neoplasm were analysed. Over the period 2004-2008, 63 patients underwent multidisciplinary treatment for colorectal cancer. All patients underwent surgery (laparoscopic/open). Exeresis was supplemented by adjuvant chemotherapy in those cases beyond IIA stage; all cases of extraperitoneal rectal and anal canal neoplasms plus one case of carcinoma of the transverse colon, initially inoperable, underwent neoadjuvant radiotherapy plus chemotherapy. The treatment was initiated approximately 3 weeks after the diagnosis. Fifty-four percent of patients with colonic and upper rectal neoplasms were given adjuvant chemotherapy, starting around 4 weeks after surgery. Exeresis was performed in those patients with extraperitoneal rectal and anal canal neoplasms (12.7%) about 6-8 weeks after they had completed neoadjuvant therapy. At the end of the treatment, 76% of the overall total numbers of patients were in good condition (follow-up 4-50 months). The remaining 24% suffered recurrences about 13 months after the treatment for colonic and upper rectal neoplasm, and 8 1/2 months after treatment for extraperitoneal rectal/anal canal neoplasms. Seventy-five percent of the recurring cases underwent treatment again, with 50% success; the others are still undergoing treatment. The best therapeutic results were obtained by programmed integration of the various diagnostic-therapeutic steps according to an algorithm which we elaborated to evaluate all types of neoplasm at any stage of illness
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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