1,720,956 research outputs found
Diagnostic evaluation prior to cholecystectomy in mild-moderate acute biliary pancreatitis.
No full textMinimally invasive treatment of acute intrahepatic fluid collections with acute biliary pancreatitis.
No full textBACKGROUND: Peripancreatic fluid collection suggests the anatomical-clinical scenario of necrotizing acute pancreatitis. However, intrahepatic fluid collection is a rare occurrence with fewer than 30 cases being reported in the medical literature. We describe 2 cases of intrahepatic fluid collection in 2 patients with acute biliary pancreatitis and discuss the therapeutic possibilities.
CASE REPORTS:
The first case report is that of a 68-year-old female with a diagnosis of acute biliary pancreatitis with several necrotizing fluid collections and a large infected intrahepatic collection in the left lobe. The patient was successfully treated by percutaneous US/CT guided drainage. The second case report is that of a 72-year-old female with a diagnosis of acute biliary pancreatitis with several peripancreatic fluid collections and a voluminous intrahepatic fluid collection in the left lobe that caused epigastric pain. This patient was also successfully treated with percutaneous US/CT guided drainage.
CONCLUSION:
Intrahepatic fluid collection in the course of acute biliary pancreatitis is a rare occurrence. The therapeutic approach is the same as that for pancreatic and peripancreatic fluid collections. In case of infection, the patient undergoes percutaneous US/CT guided drainage. This therapeutic procedure can be added to the therapeutic program for necrotizing acute biliary pancreatitis together with ERCP/ES and videolaparocholecystectomy (VLC)
Mild-moderate acute biliary pancreatitis: role of magnetic resonance cholangiopancreatography in preparation of cholecystectomy.
No full textOBJECTIVES
The importance of papillary obstruction in the pathogenesis of acute biliary pancreatitis is widely
recognized. The aim of this study was to evaluate the usefulness of the MRCP before the VLC in
the patients with mild acute biliary pancreatitis.
METHODS
In the period 2003-2007, 35 patients were submitted to a MRCP (F/M:20/15) with mild ABP without
increase of the cholestasis tests and absence of choledocholithiasis at the abdominal USG. During a followup
from 15 to 60 days after the VLC, the presence of jaundice or relapse of ABP were evaluated in all
patients.
RESULTS
Ten patients had diagnosis of choledocholithiasis at the MRCP and they were submitted to an ERCP,
endoscopic sphincterotomy and stones removal; 25 patients with a negative MRCP were submitted to the
VLC. All the 35 patients submitted to the MRCP before the VLC did not have jaundice or relapse of the ABP
during the follow-up period.
CONCLUSIONS
The MRCP was an accurate investigation for the preoperatory diagnosis of choledocholithiasis; even if it is
not possible to recommend its utilization extensively, it is an important procedure for the patients with
diagnosis of mild ABP to select all those to submit to the ERCP
Palliative Treatment of the Pancreatic Carcinoma: What Surgical By-Pass?
No full textBackground The palliative treatment of the neoplastic obstructive jaundice foresees two possibilities: the position of endoscopic biliary stents or the surgical biliary by-pass. The digestive-biliary by-pass are differentiated in cholecystojejunostomy and hepatic-jejunostomy.
Aim The aim of the study is to evaluate the results after the cholecystojejunostomy.
Methods In the period from 1998 to June 2003, we have retrospectively evaluated 31 patients with jaundice from inoperable pancreatic neoplasia: 18 patients were treated with position of endoscopic stent; 13 patients underwent the palliative intervention of cholecystojejunostomy. The preoperative evaluation was made evaluating the following parameters: instrumental evaluation (US/CT) of the increase of the gallbladder volume; notice of the neoplastic lesion; intraoperatory evaluation: patency of the cystic duct; cholecystojejunal anastomosis on a Roux en Y jejunal loop (by means of stapler or manual).
Results We have evaluated: operative time length (mean: 60 minutes), reduction of the jaundice in all patients; specific morbidity: no anastomotic dehiscences, mean patient mobilization equal to 2 days, mean resumption of the alimentation in the fourth day in, mean hospital dismissal in the seventh day, one bronchopneumonic infiltrate. The distant results confirm the reduction of the jaundice at a follow-up of 6 and 8 months.
Conclusions The cholecystojejunostomy was safe, because of the very low postoperative morbidity and effective, to control the jaundice even after distant time from the intervention, in the palliative treatment of the pancreatic carcinoma
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
- …
