1,721,025 research outputs found
Rectovaginal fistula: Risk factors for failure after graciloplasty—A bicentric retrospective European study of 61 patients
No full textBACKGROUND: Graciloplasty (GP) is indicated in case of recurrent rectovaginal fistula (RVF) after failure of previous local treatments. The aim of this study was to assess risk factors for GP failure performed for RVF.METHODS: Retrospective study based on a prospective database of GP, coming from two expert centers.RESULTS: 61 patients undergoing a first GP for RVF (n=51) or ileal-vaginal fistula after ileal-pouch-anal-anastomosis (IPAA) (n=10), with a mean age of 42 years (range, 24-72) were analyzed. After a mean follow-up of 56 ± 48 months (range, 1-183), failure of GP (considered as persistent stoma and/or clinical RVF) was noted in 24/61 patients (39%). Failure rate was 43% (13/30) in case of Crohn's disease, 38% (3/8) in case of ileal-vaginal fistula after IPAA for ulcerative colitis, 30% in case of obstetrical RVF (3/10), 33% in case of post radiotherapy RVF (1/3), and 40% for other causes (4/10) (NS). Two risk factors for failure of GP were found on univariate analysis: 1) absence of postoperative antibiotic prophylaxis (PAP): only 3/24 (13%) patients with failure of GP received PAP versus 18/37 (49%) patients with success of GP (p=0.0053); 2) postoperative perineal infection: 11/23 (48%) with failure of GP failure developed postoperative perineal infection versus only 4/37 (10%) patients with success of GP (p=0.0021).CONCLUSIONS: Failure of Graciloplasty for rectovaginal fistula is observed in approximately 40% of the patients whatever the aetiology of the fistula. Reduced failure rate was associated with systematic postoperative antibiotic prophylaxis
Laparoscopic subtotal colectomy with double-end ileosigmoidostomy in right iliac fossa facilitates second-stage surgery in patients with inflammatory bowel disease
No full textBACKGROUND:
There is no consensus about the most appropriate management of rectal stump in laparoscopic subtotal colectomy (STC) performed for inflammatory bowel disease (IBD). The objective is to report our experience of laparoscopic STC with double-end ileosigmoidostomy in the right iliac fossa for IBD.
METHODS:
All patients undergoing laparoscopic STC and double-end ileosigmoidostomy in the right iliac fossa for IBD in 2 European expert centres were included.
RESULTS:
From 1999 to 2017, laparoscopic STC and double-end ileosigmoidostomy in right iliac fossa was performed in 213 consecutive patients, including 74 patients in an emergency setting (35%). Conversion to laparotomy was necessary in 9 patients (4%). One patient died postoperatively (0.5%). Postoperative morbidity occurred in 53 patients (25%) after STC, and was major in 18 patients (8%). A second stage was performed in 199 patients (94%), with a mean delay of 4.7 ± 6 months (range 1.4-77). The second stage was an ileorectal anastomosis (n = 50/199; 25%), performed by an elective open incision in the right iliac fossa in 68% of cases; an ileal pouch-anal anastomosis (IPAA) (n = 139; 70%) successfully performed by laparoscopy in 96% of cases; or an abdominoperineal excision with end ileostomy (n = 10; 5%) successfully performed by laparoscopy in 8 cases. After this second stage, postoperative morbidity occurred in 53 patients (27%), and was major in 15 patients (8%). After a mean follow-up of 3.7 ± 3 years (range 0.1-15), stoma rate (end ileostomy and diverting stoma not closed) was 17%, and small bowel obstruction and incisional hernia occurred in 10 (5%) and 25 (12%) patients, respectively.
CONCLUSIONS:
Laparoscopic STC and double-end ileosigmoidostomy in right iliac fossa is safe, feasible, and facilitates the second stage for intestinal continuity by either elective incision or laparoscopy in 100% of ileorectal anastomoses and by laparoscopy in 96% of IPAA
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
Postoperative morbidity and mortality after pancreatoduodenectomy with pancreatic duct occlusion compared to pancreatic anastomosis: a systematic review and meta-analysis
No full textBackground: Pancreatoduodenectomy is burdened by elevated postoperative morbidity. Pancreatic duct ligation or occlusion have been experimented as an alternative to reduce the insurgence of postoperative pancreatic fistula. The aim of this systematic review and meta-analysis was to compare postoperative mortality and morbidity (pancreatic fistula, postoperative hemorrhage, delayed gastric emptying, pancreatic exocrine insufficiency and diabetes mellitus) between patients undergoing pancreatic anastomosis or pancreatic duct ligation/occlusion after pancreatoduodenectomy. Methods: A systematic review and meta-analysis of 13 studies was conducted following the PRISMA guidelines and the Cochrane protocol (PROSPERO ID: CRD42021249232). Results: No difference in postoperative mortality was highlighted. Pancreatic anastomosis was found to be protective considering all-grades pancreatic fistula (RR: 2.38, p = 0.0005), but pancreatic duct occlusion presented a 3-folded reduced risk to develop "grade C" pancreatic fistula (RR: 0.36, p = 0.1186), although not significant. Diabetes mellitus was more often diagnosed after duct occlusion (RR: 1.61, p < 0.0001); no difference was found in terms of pancreatic exocrine insufficiency (RR: 1.19, p = 0.151). Conclusion: Postoperative mortality is not influenced by the pancreatic reconstruction technique. Pancreatic anastomosis is associated with a reduction in all-grades pancreatic fistula. More high-quality studies are needed to clarify if duct sealing could reduce the prevalence of "grade C" fistula
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
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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