1,720,971 research outputs found
Laparoscopia vs. laparotomia nelle resezioni per cancro colorettale. Metanalisi dei principali trial
Full text linkThe objective of this study is in the critical analysis of the results of the lap and open surgery in the colorectal carcinoma, through the meta-analysis of the principal trials.
Patients and methods. A systematic search of the comparative studies has been made among lap and open surgery in the colorectal carcinoma, using PubMed and Cochrane Library. Among these, have been selected perspective studies containing the description of the surgical techniques, the perioperative results and the oncological long term results. Statistic analysis has been performed with the program NCSS (Kaysville 2006, Utah).
Results. From the revision of the literature, 7 perspective studies have checked fit to a meta-analysis, for a total of 3580 patients. Among the operative outcomes, has been observed, with statistically significant, a reduction of the blood loss and of the morbidity, an earlier resumption to passing flatus and to normal diet, a reduction of the postoperative hospitalization for the lap; shorter operative time is releaved for the open surgery. Statistically significant differences have emerged neither on the other surgical outcomes (included mortality) nor on relapset of illness (regional or metastasis), crab-correlated mortality, long term survival.
Conclusions. The laparoscopic can be considered a valid alternative to the traditional open surgery in the therapy of the colorectal carcinoma: the advantages consist in smaller trauma and reduction of morbidity and postoperative stay. The oncological results are the same of the open 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
Single symptomatic small bowel metastasis from primary lung cancer. A clinical case [Metastasi unica sintomatica all'intestino tenue da carcinoma primitivo del polmone. Caso clinico]
No full textSmall bowel metastases from primary lung cancer have rarely been reported and a single symptomatic metastasis to the small bowel is a rare occurrence. In the case reported here there was no evident additional site of metastatic disease and the diagnosis was made on the basis of morphology and immunohistochemistry analysis using CK 07, CK 20 and TTF-1 monoclonal antibodies. However, even in patients in whom the intestine is the sole metastatic site, the prognosis is dismal and most of patients die within 2 months
Gallbladder torsion: a case report and review of the literature [Volvolo della colecisti: descrizione di un caso clinico e revisione della letteratura]
No full textGallbladder torsion is a rare but potentially life-threatening event due to its insidious course and to the gravity of the clinical picture when the diagnosis is established late. In 85% of cases this situation affects females, aged 70 to 90 years. The aetiopathogenesis is still unknown and the diagnosis is often made during surgery. A thorough review of the literature suggests a specific clinical pattern which, when combined with improvements in radiological techniques, should allow early diagnosis and treatment. Nevertheless, only 10% of cases are correctly diagnosed before surgery. The aim of this case report was to evaluate the specific pattern of this clinical picture and the accuracy of the radiological and laboratory findings for the purposes of achieving an early diagnosis and adequate treatment
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
Is robotic better than laparoscopic approach for right colectomy? A cohort study from two Tuscany centers
No full textLa chirurgia miniinvasiva sta sostituendo la chirurgia a cielo aperto in quasi tutte le discipline chirurgiche. L’uso del robot nella chirurgia laparoscopica invece sta diventando sempre più frequente. Ad esso vengono riconosciuti dei vantaggi come la migliore visualizzazione, maggiore stabilità, più grande amplitudine di movimento del polso robotico, la filtrazione del tremore e degli svantaggi come il più lungo tempo operatorio e il costo più alto. Alcuni studi hanno cercato di confrontare la chirurgia robotica e laparoscopica con risultati discordanti. La diffusione della tecnica CME per l’emicolectomia destra potrebbe beneficiare dalla piattaforma robotica. Lo scopo del nostro studio è stato il confronto ai risultati a breve termine dell’emicolectomia destra robotica e laparoscopica. I dati delle procedure di emicolectomia destra robotica e laparoscopica eseguite dal 1 gennaio 2013 al 31 dicembre 31 2019 in due ospedali toscani sono stati raccolti e analizzati retrospettivamente. Sono stati confrontati la degenza media, le complicanze, la canalizzazione ai gas, il tempo operatorio, la percentuale di conversione e il numero dei linfonodi asportati fra le due tecniche robotiche. Il numero totale dei pazienti sottoposti a emicolectomia destra robotica e laparoscopica è stato 211. Sedici pazienti sono stati esclusi dallo studio. Dei 195 pazienti inclusi, 143 sono stati operati con la tecnica robotica e 52 con la tecnica laparoscopica. Non ci sono state differenze riguardo la degenza media (7 giorni per entrambi), canalizzazione ai gas (4 giorni per entrambe te procedure), la deiscenza anastomotica (2 con la tecnica robotica e 2 in laparoscopia), e le complicanze Clavien- Dindo 3-5. Il tempo operatorio (215 vs 175 minuti) e il numero dei linfonodi asportati (19 vs 15) è stato significativamente più grande nell’approccio robotico.Robotic surgery is becoming more and more frequent. In colon surgery it can be used safely with similar results to laparoscopic surgery. The objective of our work is to retrospectively compare the short-term results (30 days) of robotic and laparoscopic right hemicolectomy. It will be helpful to understand if there are any advantages of robotic over laparoscopic surgery. METHODS: Data of miniinvasive (laparoscopic and robotic) right colectomy procedures performed from January 1, 2013 to December 31, 2019 in two Tuscany hospitals were retrospectively collected and analyzed. The mean hospital stay, complication rate, flatus pass, operative time, conversion rate and the number of removed lymph nodes, between the two methods have been compared. RESULTS: The total number of the patients that underwent right miniinvasive colectomy was 211. Sixteen patients were excluded from the study. Of the 195 included patients, 143 were operated with the robotic approach, and 52 with the laparoscopic one. There was no significant difference between the mean hospital stay (7 days in both), canalization to gas (4 days in both), anastomotic dehiscence (2 in robotic and 1 in laparoscopy), and Clavien Dindo 3 - 5 grade complications. The operation time (215 vs 175 min) and the number of retrieved lymph nodes (19 vs 15) were significantly greater in the robotic approach. CONCLUSION: The robotic approach may be advantageous in terms of surgical radicality with the price of a greater operative time. KEY WORDS: Laparoscopic, Right colectomy, Robotic
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
Incarcerated inguinal hernia in elderly: Personal tension-free hernioplastic technique [Tecnica operatoria di ernioplastica protesica tension-free nelle ernie inguinali intasate nei pazienti anziani]
No full textAIMS OF THE STUDY: With the increasing of the middle age, more and more elderly patients with incarcerated inguinal hernia have to be surgically treated with lower operatory time and lower anesthesiological stress. The Authors present a personal tension-free hernioplastic technique.
MATERIALS AND METHODS: Thirthy-seven male patients (range 80-92 years) recovered for incarcerated inguinal hernia (Gilbert II tipe) without vascular injury, underwent to tension-free hernioplastic technique without inguinal canal opening, in local anaesthesia.
RESULTS: The average operative time was 33 minutes (range 25-42 min). Follow-up at 10 days, 3 months and 5 years shows a correct position of the plug, no recurrence, no alterations of normal testicular vascolarization in absence of paresthesia or chronic pain. The post-operative pain was absent or trascurable whitout the use of any antalgical therapy
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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