1,720,964 research outputs found
Management of orbital and brain complications of sinusitis: A practical algorithm.
No full textThe aim of this work was to present a practical management algorithm for orbital and brain complications of sinusitis. According to the inclusion criteria, a sample of 68 patients was collected between 2008 and 2018 (39 males and 29 females). Among them, 44 were adults, with a mean age of 50.46 years, and 24 were pediatric patients, with a mean age of 10.33 years. Oral or intravenous antibiotic therapy was administered to all patients. Pharmacological resolution was observed in 14 cases. Early surgical treatment within 48 hours was necessary in 10 cases. Surgery consisted of abscess drainage, associated or not with functional endoscopic sinus surgery. Delayed surgery within 15–30 days was performed in 44 patients. The core procedure was functional endoscopic sinus surgery. Subsidiary procedures were abscess drainage, tooth extraction or cranial base repair. The combination of two or more of these procedures was case selected. Median follow-up was of 46.36 months. Sinusitis complications necessitate rapid diagnosis and prompt treatment. Antibiotic therapy alone is enough for mistreated rhinosinusitis with no anatomical predisposing factor. Surgery is mandatory for altered nasal and paranasal sinus anatomy or odontogenic infections
Endoscopic sinus and skullbase surgery in pediatric patients during the COVID-19 pandemic
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Endoscopic endonasal skull base surgery in pediatric patients. A single center experience
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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
Endoscopic endonasal treatment of intra-axial ventral brainstem cavernomas: Case experience and literature review
No full textIntroduction: Cavernous malformations of the ventral brainstem are a challenging disease to treat. From an anatomical perspective, the best surgical options are endoscopic endonasal approaches. The first reports of their usage for this purpose date back to 2012. In this study, we gathered data on the subject, share our experience, and outline technical notes and tips for this surgery. Case Presentation: We report a 14-year-old female with a ventral pons cavernoma, treated using an endoscopic endonasal transclival approach and followed-up for 5.9 years. This is the longest reported follow-up for this condition to date. Written informed consent was obtained from the patient for publication of this case report and the accompanying images. Discussion: An endoscopic endonasal transclival approach was used. The skull base was reconstructed using the multilayer grafting technique and a nasoseptal flap. There was no postoperative cerebrospinal fluid leakage. In a literature review, we identified 8 patients who were treated endoscopically: 1 transplanum-transtuberculum, 1 transtuberculum-transclival, and 6 transclival approaches were employed. Skull base closure was achieved using multilayer grafting and a nasoseptal flap in 4 cases, a gasket seal technique combined with nasoseptal flap in 3 cases and a periumbilical fat graft, fibrin sealant patch, and fibrin glue in 1 case. There were 2 cases of leakage, which resolved completely with revision surgery. Conclusion: Endoscopic surgery is a reliable alternative to traditional open surgery. It may be the preferred choice for intra-axial ventral brain cavernomas
Endoscopic endonasal skull base surgery in pediatric patients. A single center experience
No full textObject: At present, a minimally invasive endoscopic endonasal approach is considered an efficient option for lesions affecting the anterior and middle skull base with sellar and parasellar region involvement. In this study we will retrospectively analyze the pediatric patients that we have been treating in the same medical center for the past four years, using an endoscopic approach in the skull base. Methods: We performed a retrospective chart and imaging review of pediatric patients who underwent endoscopic endonasal skull base surgery (ESBS) at the Meyer Children's Hospital, (Azienda Ospedaliero Universitaria Meyer), in Florence, from January 2012 to July 2016. Results: Mean age was 12,5 years; 28 (65%) of the 44 patients were females. Skull base lesions were broadly classified as either bony abnormalities (4 cases) or skull base tumors (40 cases). The postoperative clinical follow-up duration ranged from 2 to 36 months. The two more frequently occurring diseases in our study were: craniopharyngioma and pituitary adenoma. Conclusions: After reviewing the international literature about pediatric endoscopic endonasal approach to skull base, we can affirm that our study is the world's second broadest work for number of records. While compiling this report, we have examined the first 40 consecutive pediatric patients to undergo ESBS at our institute. The appearance of postoperative complications is consistent with other international studies, confirming ESBS being feasible and safe even in the pediatric population. Level of evidence: 4
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
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