1,720,984 research outputs found
A detailed analysis of surgical site infections and risk factors: A multicentric cohort study in Türkiye
No full textThere is limited data on surgical site infection (SSI) in developing countries. The aim of this study was to investigate the incidence and risk factors of SSI following general surgical operations in Türkiye. This multicenter cohort study was conducted at 10 centers. Patients who underwent thyroid/parathyroid, breast, hernia and abdominal surgery between September 2017 and March 2018 were included in the study. Center for Disease Control and Prevention 2016 (CDC-2016) criteria was used for the diagnosis of SSI. Patients were followed for 30 days (90 days for mesh patients). Out of 1871 patients included, SSI occurred in 181 (9.7%) patients. Of these SSI, 101 (55.8%) were superficial, 41 (22.7%) deep, and 39 (21.5%) organ/space SSI. SSI incidence was seen to be high (>15.0%) following some surgeries (40.0% in pancreas, 39.1% in biliary duct, 30.3% in small bowel, 27.9% in colorectal, 27.3% in esophagus, 24.1% in liver, 15.7% in gastric). SSI incidences were generally <5.0% after some surgeries (4.4% in hernia, 4.2% in gallbladder, 3.3% in morbid obesity, 1.4% in breast, 0.8% in thyroid/parathyroid, and zero in spleen and surrenal). In univariate analysis, age ≥60 years, female sex, preoperative weight loss, presence of comorbidities, preoperative albumin <3.5 g/dL and hemoglobin <12 g/dL, wound classification, ASA score, general anesthesia, emergency surgery, open surgery, operation time ≥4 hours, intraoperative blood loss ≥400 ml, perioperative blood transfusion, drain placement, distant infection and malignant disease were associated with SSI. In multivariate analysis preoperative weight loss, clean-contaminated wound, general anesthesia, emergency surgery, open surgical technique, prolonged operation duration (≥4 hours), drain placement, and distant infection were found to be independent variable for SSI risk. In order to reduce the incidence of SSI, patients with a weight loss of 10% or more in six months preoperatively should be identified, and nutritional status of the patients should be corrected preoperatively, laparoscopic technique should be preferred in abdominal surgeries, and drain placement should be avoided, especially in clean-contaminated wounds.Çalışmada 28 yazar bulunmaktadır. Bu yazarlardan sadece Bursa Uludağ Üniversitesi mensuplarının girişleri yapılmıştır
Myelitis after liver transplant: A case report
Full text linkWe report a case of neurotoxicity as a side effect of a calcineurin inhibitor (tacrolimus), which is used as an immunosuppressive drug after liver transplant. Our patient had chronic hepatic failure due to Budd-Chiari syndrome and underwent a liver transplant after an appropriate deceased donor organ was obtained. After organ transplant surgery, he was kept under the effect of an immunosuppressive drug (tacrolimus) with daily control of the level of drug in his blood to avoid drug toxicity. Despite the level of drug in his blood being within the ideal range, the patient developed neurotoxicity that presented as weakness of his extremities. Appropriate diagnostic tests were done, and all proved that these signs and symptoms were related to the use of tacrolimus. Therefore, the drug was changed to cyclosporine. After a few months, the patient regained normal neurological functions of his extremities. We should take precautions to monitor neurological symptoms and signs while we administer calcineurin inhibitors
Surgical results of liver metastases of tumors other than colorectal-neuroendocrine: Is it really worth it or is it necessary?
Full text linkObjective: It is known that surgical treatment is advantageous in terms of efficacy and survival in colorectal cancer and neuroendocrine tumor liver metastases. Our aim in this study was to determine the results of surgical treatment of non-colorectal (NCR), non-neuroendocrine tumor (NNET) liver metastases (LM). Material and Methods: A total of 125 patients having NCR and NNET were included in the study. Demographic characteristics of the patients, histological features of the tumor, time from resection of the primary tumor to the first diagnosis of liver metastases, synchronous and metachronous presentations of hepatic metastases with primary malignancy, type of resection, postoperative complications, length of hospital stay, and survival were analyzed retrosepctively. Results: Median follow-up time was 21 (1-132) months. Mean overall survival (OS) and mean proression free survival (PFS) were 29.86 ± 2.4 and 21.23 ± 2.1 months respectively. Most of the cases were LM of breast (n= 33, 26.4%), gastric (n= 25, 20.0%) and gastrointestinal stromal tumors (GIST) (n= 16, 12.8%). Interval from resection of primary tumor to the diagnosis of LM was 20.90 ± 28.9 (0-144) months. OS and DFS rates were found respectively as; 78% and 69% at one year, 45% and 38% at three years, 32% and 21% at five years and 3.2% and 1.6% at 10 years. Breast cancer liver metastases had the longest OS and PFS. Pancreatic cancer and gastric cancer group significantly have shorter OS than the other groups. Conclusion: According to our data, the results are better in breast and GIST liver metastases, and the place of surgical treatment in pancreatic and malignant melanoma liver metastases is controversial
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
living donor liver transplantation: A systematic review and meta-analysis
No full textBACKGROUNDThe outcomes of liver transplantation (LT) from different grafts have been studied individually and in combination, but the reports were conflicting with some researchers finding no difference in both short-term and long-term outcomes between the deceased donor split LT (DD-SLT) and living donor LT (LDLT).AIMTo compare the outcomes of DD-SLT and LDLT we performed this systematic review and meta-analysis.METHODSThis systematic review was performed in compliance with the Preferred Reporting Items for Systematic Review and Meta-Analysis guidelines. The following databases were searched for articles comparing outcomes of DD-SLT and LDLT: PubMed; Google Scholar; Embase; Cochrane Central Register of Controlled Trials; the Cochrane Database of Systematic Reviews; and Reference Citation Analysis (https://www.referencecitationanalysis.com/). The search terms used were: "liver transplantation;" "liver transplant;" "split liver transplant;" "living donor liver transplant;" "partial liver transplant;" "partial liver graft;" "ex vivo splitting;" and "in vivo splitting."RESULTSTen studies were included for the data synthesis and meta-analysis. There were a total of 4836 patients. The overall survival rate at 1 year, 3 years and 5 years was superior in patients that received LDLT compared to DD-SLT. At 1 year, the hazard ratios was 1.44 (95% confidence interval: 1.16-1.78; P = 0.001). The graft survival rate at 3 years and 5 years was superior in the LDLT group (3 year hazard ratio: 1.28; 95% confidence interval: 1.01-1.63; P = 0.04).CONCLUSIONThis meta-analysis showed that LDLT has better graft survival and overall survival when compared to DD-SLT
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
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