1,720,968 research outputs found
An unexpected case of bifid esophagus
No full textWe propose a case of a 84 years old male patient who
presented to our department of Otorhinolaryngology for
worsening dysphagia since 3 month, that was annoy-
ing but not conditioning alimentation. Anamnesis did
not suggest any risk factor or co-morbidity that could
explain the disturb. In particular, no history of surgi-
cal interventions to gastrointestinal tract, no neurologi-
cal or geriatric disorders, no history of cancer
Transoral Robotic Surgery (TORS) for Bilateral Eagle Syndrome
No full textEagle syndrome is a rare and poorly understood clinical condition caused by an elongated or disfigured styloid process. The possible managements of Eagle syndrome include conservative medical treatment or surgical intervention. The surgical removal of the elongated styloid process may be efficiently achieved either by an intraoral or a transcervical approach. An effective styloidectomy may be either total or partial, provided the bony residue's length is within the range of normality. Here, we report our experience with a bilateral robotic-assisted styloidectomy in a young female patient. Our experience showed that this procedure is a safe alternative to traditional surgical approaches, granting an excellent view and a safe manipulation by robotic arms, and, thereby, avoiding iatrogenic damage to neurovascular structures. Moreover, transoral robotic surgery could represent the gold standard for the treatment of bilateral Eagle syndrome cases allowing a quick and safe single-time surgery
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
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
Sleep position and obstructive sleep apnea (OSA): Do we know how we sleep? A new explorative sleeping questionnaire
No full textPurpose: Positional obstructive sleep apnea (POSA) has been defined as a difference of 50% or more in Apnea-Hypopnea Index (AHI) between supine and non-supine position. Sleep position is fundamental in the evaluation of obstructive sleep apnea syndrome (OSAS) severity but most tools used in the diagnosis of OSAS are not free from potential bias in the evaluation of usual sleep positions. The aim of this investigation was to evaluate a novel sleep questionnaire with the purpose of exploring sleep habits and evaluating if sleep assessment can identify the usual body position assumed for sleep. Materials and methods: The questionnaire was administered to patients recruited from October to November 2018. Questions concerned sleeping positions and conditions that could influence sleeping positions. Patients who had previously undergone polysomnography (PSG) were asked how they slept during the study night. Whenever present during the examination, the patient's bed partner was also asked about the patient's usual body positions during sleep. Results: Of 315 patients (211 men) enrolled, 35% were affected by OSAS and 69% of patients with OSAS had POSA. POSA was more prevalent among men (75%) compared to women (43%). The new questionnaire provided a discordant result from PSG recordings about sleeping positions and revealed a difference between usual sleeping position and the position during PSG recording. Reported sleep quality was much worse on PSG than at home suggesting that the "first night effect" is real and may lead to over-estimation of POSA cases. Conclusions: Information about sleeping positions is fundamental to the assessment of OSAS severity. Knowledge gained from the new questionnaire as described may represent a valuable addendum to develop a more detailed polygraphic report. Such a tool may be used in practice with the aim of better identifying patients with true positional OSAS. Such patients may benefit from targeted positional therapy
Congenital Pyriform Sinus Fistula: Management of an Extra-Delayed and Atypical Case
No full textClinical presentations of pyriform sinus fistulas vary, and this sometimes leads to a delay in diagnosis and treatment. Recently, we experienced a case of recurrent cervical abscesses occurring after thyroidectomy in an adult affected by a bifidus pyriform sinus fistula. The diagnostic dilemma was related to the timing of events, with a single episode of acute suppurative thyroiditis having occurred 16 years before the onset of the more recent clinical scenario. An endoscopic approach allowed effective management of this clinical case.</jats:p
- …
