323,526 research outputs found
Invitation from the congress president to attend the 2005 European society for artificial organs-international Federation for artificial organs joint congress
No full textMacchina per emodialisi
No full textIl brevetto riguarda un modello matematico predittivo in grado di simulare la cinetica intradialitica dei soluti e dei fluidi.
Esso include un modello tricompartimentale di fluidi corporei (plasma, interstiziale ed intracellulare) una descrizione bicompartimentale dei principali soluti (K+, Na+, C1-, urea, HCO3-, H+) ed una descrizione dell'equilibrio acido.base che analizza un doppio sistema di tamponi (bicarbonato e tamponi non carbonici)
β2-Microglobulin and low-flux synthetic dialyzers
No full textThe aim of this study was to compare the effect on β2-microglobulin (β2-M) plasma levels of dialyzers with 3 low-flux synthetic membranes and regenerated cellulose (Cuprophan) in 12 chronic dialysis patients. The Synthetic membrane materials chosen were low-flux polymethylmethacrylate (PMMA), low-flux polysulfone (PS 400), and polycarbonate-polyether (Gambrane). Adequate and comparable removal of small solutes was provided by dialyzers with all 4 membrane materials used under similar conditions. A significant reduction of β2-M plasma levels was seen only with Gambrane while the other 2 synthetic membrane materials gave rise to increases similar to those known to occur with Cuprophan. After correction for the hemoconcentration caused by ultrafiltration, dialysis with Gambrane showed a 24% lower plasma β2-M level while the β2-M concentrations with the other 3 membrane materials were practically unchanged. In addition, the efficiency of Gambrane dialyzers in β2-M removal was able to significantly lower the predialysis plasma β2-M levels after only 5 dialysis sessions. The hemocompatibility of the 3 synthetic low-flux membranes as judged by the white blood cell (WBC) count and complement activation was similar and therefore cannot be used to explain the different β2-M plasma levels. In anticipation of gaining further insight into the mechanisms of accumulation and deposition of β2-M in dialysis patients, a worthwhile approach may be to use a low-flux membrane such as Gambrane which combines removal with protection against potential activating factors in the dialysis fluid
A real-time analysis of a transplantation program with a personal computer
No full textThis study concerns the use of commercial software (a spreadsheet combined with database and graphic functions) to analyze data on kidney transplantation. The program consists of a section containing (macro) instructions, a section for entering data, a database, a set of spreadsheets (one for each field) with which the statistical calculations and summary tables are executed, and a set of diagrams for the final visual output. Three kinds of data are made available: descriptive statistics, actuarial survival rates, and risk factor evaluation. The program can analyze the importance of the variables considered and estimate the effect of a therapeutic or diagnostic maneuver
Urological complications after kidney Transplantation: Experience of over 1000 Transplants
No full textRecipient predictors for developing delayed graft function (DGF). A paired kidney analysis in a single center.
No full textMarcello Malpighi and his academic opponents in Bologna.
No full textMarcello Malpighi was born in Crevalcore on March 10, 1628 and died in Rome on July 25, 1694. In Bologna he had among his opponents Giovanni Gerolamo Sbaraglia and Paoli Mini who prevented him being appointed to the chair of anatomy. This paper describes the reasons for this long term debate
Persistent agmination of lymphomatoid papulosis: an ongoing debate.
No full textBackground: Persistent agmination of lymphomatoid papulosis (PALP) has been a matter of controversy in the literature, some authors suggesting that it represents composite lymphoma, others localized lymphomatoid papulosis (LyP). Patient and Methods: A 64-year-old man was referred to our outpatient center complaining of papular eruptions lasting 3 years. At physical examination, he showed papulonodular lesions on the trunk and extremities. Some patches on the trunk and upper arms were also observed. Both types of lesion were biopsied and studied on histological, immunohistochemical and molecular grounds. Results: The nodular lesion revealed the classical features of LyP type A, while the patch was characterized by the presence of a superficial and deep infiltrate with perivascular and interstitial location, consisting of mature lymphocytes admixed with plasma cells and large atypical cells that became more numerous beneath the epidermis. On immunohistochemistry the two lesions presented the same profile. Conclusion: Our case suggests that PALP does not correspond to localized LyP, as it can involve different skin areas since its presentation. Furthermore it rules out the possibility that PALP is a composite lymphoma. In fact, the same cytological and phenotypic characteristics were detected in all samples, including those taken from patchy areas
- …
