1,720,996 research outputs found
Optimal workup for a hiatal hernia
Full text linkHiatal hernias are common and generally correlated with obesity and increasing age. However, many individuals have no symptoms and are never diagnosed, thus it’s hard to establish the real prevalence of hiatal hernias. To pursue a diagnosis of hiatal hernia is not necessary in asymptomatic patients, but symptomatic ones need evaluation and should be considered for surgical repair. The clinical workup is based on the patient's symptomatology and clinical presentation. For elective HH repair we advocate the use of few standard pre-operative tests as first line. More specific functional and morphological studies scan should be used case by case depending on the hernia size, patients’ symptoms and setting
Medicolegal considerations involving iatrogenic lingual nerve damage
No full textThe aim of this review is to improve risk management strategies through analysis of the anatomic, semeiotic, and medicolegal aspects that characterize iatrogenic lingual nerve damage (LND) and its legal consequences in the case of legal proceedings for a claim for compensation. In dental practice, LND can be caused by local or general anesthesia or by mechanical, chemical, or thermal mechanisms. A certain postoperative identification of LND etiopathogenesis is often very challenging because it can be difficult to show at what time the damage occurred and which mechanism actually caused it. Clinical tests assessing lingual nerve sensory capabilities have a low sensitivity and moderate specificity, whereas instrumental tests have the advantage of not being affected by data interpretation subjectivity by both the operator and the patient. The quantification of permanent LND is not uniformly established, and there are no specific standard worldwide indications. From a medicolegal point of view, LND is a complication that may or may not be caused by surgical error. The 2 different concepts of “expectability” and avoidability or preventability allow one to discriminate between professional liability and fate and therefore to determine the surgeon's imputability in LND. Despite clinical competence and practice in performing the medical or surgical procedure, the clinician risks a lawsuit for negligence if he or she does not warn the patient about all relevant risks regardless of their frequency. Informed consent plays an essential role in minimizing litigation; the patient must be informed—with both his or her level of culture and ability to understand being taken into consideration—of the diagnosis, prognosis, and therapeutic perspectives and their consequences, in addition to all other viable alternative therapies, as well as the risks of nontreatment
Training in bariatric and metabolic endoscopy
Full text linkThe limited penetration of bariatric surgery and the scarce outcome of pharmacological therapies created a favorable space for primary bariatric endoscopic techniques. Furthermore, bariatric endoscopy is largely used to diagnose and treat surgical complications and weight regain after bariatric surgery. The increasingly essential role of endoscopy in the management of obese patients results in the need for trained professionals. Training methods are evolving, and the apprenticeship method is giving way to the simulation-based method. Existing simulation platforms include mechanical simulators, ex vivo and in vivo models, and virtual reality simulators. This review analyzes current training methods for bariatric endoscopy and available training programs with dedicated bariatric core curricula, giving a glimpse of future perspectives
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
Long-term placement of lumen apposing metal stent for EUS guided duodeno and jejuno-jejunal anastomosis for direct access to excluded jejunal limb
No full textBackground: Management of biliary disorders in patients with altered anatomy may be challenging. EUS-guided gastrointestinal anastomosis using lumen apposing metal stent (LAMS) have been introduced to allow endoscopic retrograde cholangiography (ERC) in such cases. However the appropriate stent indwelling time is still uncertain. We report long-term LAMS deployment after duodeno-jejunal or jejuno-jejunal anastomosis (EUS-DJA) to allow endoscopic re-interventions in case of recurrences.
Methods: 11 consecutive patients underwent to EUS-DJA with long standing LAMS between January 2017 and December 2018. ERC treatment was carried out over a 12 months period with multiple endoscopic sessions across DJA.
Results: Technical success was 91% (10/11 pts) for EUS-DJA and 100% for ERC. Four patients presented stricture recurrence after an average of 489±31.7 days from the end of ERC treatment. A novel ERC across LAMS anastomosis was feasible in all cases. At average of 781 days±253 all LAMS are still in place with no evidence of any adverse event.
Conclusion: Long-term LAMS placement after EUSDJA may be feasible and safe in order to maintain a direct access to the excluded limb
Temporary Trans-gastric Stent Deployment Over a 20 French Gastrostomy for Single-Stage Endoscopic Retrograde Cholangiopancreatography After Gastric Bypass
Full text linkIntroduction: Treatment of pancreato-biliary disorders after gastric bypass is challenging due to altered anatomy. Several techniques have been proposed to overcome this condition; however, none has emerged as the gold standard treatment. Furthermore, a decision-making algorithm evaluating when and why apply one technique over another is still lacking. Objectives: To describe a novel trans-gastric approach to allow endoscopic retrograde cholangiopancreatography (ERCP) in Roux-en-Y gastric bypass (RYGB) anatomy soon after prior laparoscopic cholecystectomy (LC) and to propose a decision-making algorithm for selection of the most suitable technique according a tailored approach. Setting: Private hospital. Methods: Between January and March 2020, patients with Roux-en-Y gastric bypass anatomy referred to our tertiary center to undergo ERCP after recent laparoscopic cholecystectomy were retrospectively evaluated. A 20 french (Fr) gastrostomy was performed during cholecystectomy. A single-stage ERCP was carried out by means of temporary trans-gastric stent deployment over a 20 Fr gastrostomy. Results: A total of 5 patients (mean age 41; mean body mass index 48.3) were enrolled. ERCP was performed after an average of 2 days from surgery. Technical and clinical success was achieved in 100%. No adverse events occurred. Spontaneous closure of the gastrostomy after its bedside removal was observed in all cases. Conclusions: Our approach allows to perform a single-stage ERCP in RYGB patients, early after LC, with no need of any other re-interventions. Any surgeon facing unexpected biliary disorders, during LC, can easily perform a 20 Fr gastrostomy thus allowing the patient to undergo early ERCP without any delay
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