16 results on '"Segoloni, G."'
Search Results
2. Daily Dialysis Kt/V and Flexible Schedules: Is it Possible to Control Efficiency, When and How?
- Author
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Piccoli, G.B., Calderini, M., Bechis, F., Pacitti, A., Vischi, M., Iacuzzo, C., Mezza, E., Gai, M., Anania, P., Iadarola, A.M., Buniva, C., Jeantet, A., and Segoloni, G.
- Abstract
Background Daily hemodialysis is a promising treatment schedule but uniform criteria for defining efficiency are lacking.Methods On our daily dialysis (DD) schedule, duration is flexible (2–3 hours, patients are free to add up to 30min/session), Qb 250–350 mL/min; dialyser 1.6–1.8 m2. Study was performed on 12 pts on DD for ≥2 months, with ≥4 Kt/V on subsequent days, tested in the same laboratory. Goal: To evaluate variability and identify a simple method for weekly calculation, Kt/V was assessed for 133 sessions.Results On flexible DD, variability of Kt/V-session is high (relative error 4.9%-22%). On flexible schedules, within the time range chosen (2–3 hours) variability of average hourly Kt/V is lower (standard deviation: min (0.014; max (0.052 hour, relative error 4.9%-10%) allowing calculation of weekly Kt/V (averaging 3 sessions: relative error <6%) suitable for clinical practice.Conclusions Flexible schedules, allowing patients to increase treatment time, are an interesting clinical option, but a challenge for Kt/V assessment.
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- 2001
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3. In vitro Complement-Independent Activation of Human Neutrophils by Hemodialysis Membranes: Role of the Net Electric Charge
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Tetta, C., Segoloni, G., Camussi, G., Neumann, S., Griva, S., Piva, S., Pacitti, A., and Vercellone, A.
- Abstract
Polymethylmethacrylate (PMMA) membranes with different net electric charges and percentage water contents (anionic 71%, neutral 70%, cationic 75%) were evaluated for their ability to stimulate plasma-free human polymorphonuclear neutrophils (PMN), and compared for potency to cuprophan (Cu), already described as being a potent trigger of PMN. The release of lysozyme, β-glucuronidase, lactic dehydrogenase (LDH), and the generation of a platelet aggregating activity were studied in the supernatants from plasma-free human PMN incubated with different membranes. The PMN intracellular content of neutrophil cationic proteins (NCP), elastase, and cathepsin G were also studied by immunofluorescence using specific antisera on smears of PMN before and after incubation with each membrane.Only cationic, but not anionic or neutral PMMA induced a marked release of lysozyme (range 20-25% of the sonicated control, assumed as 100%), and β-glu-coronidase (40-43%), and marked depletion of the intracellular content of NCP, elastase, and cathepsin G, suggesting a degranulation process. Platelet aggregating activity was generated and referred to the release of platelet activating factor (PAF) only in the supernatants from PMN incubated with cationic, but not with anionic, or neutral PMMA membranes.These results indicate that modification of the net electric charge can per se turn PMMA, commonly recognized as inert, into a material with marked PMN activating effects, comparable to those of Cu, a highly reactive polymer.
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- 1987
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4. The Production of Platelet-Activating Factor during Hemodialysis
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Tetta, C., Segoloni, G., Pacitti, A., Regis, G., Salomone, M., Turello, E., Camussi, G., and Vercellone, A.
- Abstract
Regenerated cellulosic membranes (CU) induced the aggregation of plasma-free human neutrophils when recirculated in a dynamic model of dialysis without the patient on the circuit. Neutrophil aggregation was linked to the production of PAF by these cells. In the absence of detectable PAF production, no neutrophil aggregation occurred, as observed during recirculation with polymethylmethacrylate (PMMA) membranes. With polycarbonate (PC), PAF production and aggregation of neutrophils were both almost half the values with CU. PAF production was studied in ten hemodialysis (HD) patients tested twice with CU and once with PC and PMMA membranes. PAF was extracted in the venous blood during filling of the dialyser for 9/20 of patients with CU (3.1 ± 2.9 ng/ml, mean ± 1 S.D.) a membrane that induced marked leukopenia (> 50% of basal values at 15 min), C3a des Arg generation (> 500% at 5 min), and plasma levels of the elastase-alpha1-proteinase inhibitor complex (> 500% at the end of HD). Membranes such as PC and PMMA showing intermediate or low potential to induce leukopenia and C3a des Arg generation, respectively, did not trigger the production and release of PAF in detectable amounts at any interval. However, with PMMA, plasma neutrophil elastase was significantly higher than baseline at the end of dialysis. These levels were not significantly different (p < 0.05) from those observed with CU and PC membranes
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- 1989
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5. Acute Renal Failure in Fulminating Beriberi
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Stratta, P., Canavese, C., Triolo, G., Segoloni, G., Pacitti, A., Salomone, M., Mangiarotti, G., and Vercellone, A.
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- 1986
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6. CKD patients and erythropoietin: do we need evidence-based informed consent?
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Mezza E, Consiglio V, Soragna G, Putaggio S, Burdese M, Perrotta L, Jeantet A, Segoloni GP, and Piccoli GB
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- Adult, Aged, Aged, 80 and over, Educational Status, Female, Health Knowledge, Attitudes, Practice, Humans, Italy, Kidney Failure, Chronic drug therapy, Kidney Transplantation, Male, Middle Aged, Nurses, Recombinant Proteins, Renal Dialysis, Students, Medical, Surveys and Questionnaires, Consent Forms standards, Erythropoietin therapeutic use, Evidence-Based Medicine, Informed Consent, Patient Education as Topic
- Abstract
Background: Consent to therapy is increasingly requested in the form of ''informed consent''., Objective: To validate an evidence-based informed consent form for erythropoietin (EPO) therapy and to evaluate patient opinions about the informed consent approach., Methods: An evidence-based informed consent form was developed as part of the Evidence-Based-Medicine course at the Medical School of Turin, Italy. It was validated by anonymous questionnaires (0-10 analogical scales and open answers) administered to patients at different stages of CKD (19 pre-ESRD, 26 hemodialysis, 12 transplant patients) attending an outpatient unit of the University of Turin, to 8 nurses, and to 26 medical students., Results: All individuals filled in the questionnaire. Interest in a detailed explanation of the therapy was high (median 9), as was comprehension (median 9), with no differences between patients with regard to disease stage (pre-ESRD vs. RRT) or educational level. Prior knowledge of the therapy was affected by the educational level (p=0.013 for the advantages and p=0.004 for the side effects) and the professional role (patients vs caregivers: p=0.009 for the advantages and p<0.001 for side affects); patient knowledge of the advantages (median 6) tended to increase as the disease progressed (p=0.015). The most common response by patients was that informed consent was necessary for all drugs (35.1%); 73.1% of the caregivers considered it necessary only for severe side effects. The preferred modality of consent was discussion with the caregiver during the clinical controls (42% of all cases)., Conclusions: Patient interest in and comprehension of an informed consent form with a detailed explanation of the therapy was high; the caregiver's opinion was still the most valued teaching tool.
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- 2005
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7. Ethics of transplantation in the medical school: a pilot study.
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Piccoli GB, Soragna G, Mezza E, Putaggio S, Garelli G, Bermond F, Burdese M, Jeantet A, Vercellone F, Segoloni GP, and Piccoli G
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- Adult, Attitude of Health Personnel, Education, Medical, Undergraduate methods, Female, Humans, Italy, Kidney Transplantation methods, Male, Pilot Projects, Schools, Medical trends, Students, Medical, Education, Medical, Undergraduate ethics, Kidney Transplantation ethics, Schools, Medical standards
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- 2004
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8. EPO or not-EPO? An evidence based informed consent.
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Mezza E, Piccoli GB, Pacitti A, Soragna G, Bermond F, Burdese M, Gai M, Motta D, Jeantet A, Merletti F, Vineis P, and Segoloni GP
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- Aged, Education, Medical, Undergraduate, Female, Humans, Italy, Male, Middle Aged, Nephrology education, Recombinant Proteins, Renal Dialysis adverse effects, Renal Dialysis methods, Risk Assessment, Schools, Medical, Erythropoietin administration & dosage, Evidence-Based Medicine, Informed Consent standards
- Abstract
Background: Informed consent is crucial in therapeutic choices; however, the forms presented to patients are often locally developed and information may not be homogeneous., Objective: To prepare an evidence-based model for informed consent, applied in the case of erythropoietin therapy (EPO) as a teaching tool for medical students., Methods: Methodological tools of Evidence-Based Medicine (EBM) were developed within the EBM Course in the Medical School of Torino, Italy, as problem solving and patient information tools (5th year students work in small groups under the supervision of statisticians, epidemiologists and experts of internal medicine--nephrology in this case)., Results: Methodological and ethical problems were identified: in the pre-dialysis field, evidence from randomized clinical trials (RCT) is scant; how to use evidence gathered in dialysis? How to deal with implementation? How with the mass media? Do we need to discuss the drug choice with the patients? How to deal with rare and severe side effects?). The "evidence" was searched for on Medline/Embase, by using key-words and free terms. About 680 papers were retrieved and screened. Forms available on the Internet were retrieved and a general scheme was drawn: it included 5 areas: title, aim and targets (patients and family physicians); search strategies and updating; pros and cons of therapy; alternative options; open questions., Conclusions: EBM may offer valuable tools for systematically approaching patient information; the inclusion of this kind of exercise in the Medical School EBM courses may help enhance the awareness of future physicians of the correct communication with patients.
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- 2004
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9. Maintenance of residual renal function 10 years after the start of hemodialysis: the advantage of tailored schedules?
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Piccoli GB, Burdese M, Mezza E, Consiglio V, Mangiarotti G, Thea A, Bermond F, Gai M, Lanfranco G, Jeantet A, and Segoloni GP
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- Humans, Kidney physiopathology, Kidney Failure, Chronic therapy, Male, Middle Aged, Time Factors, Appointments and Schedules, Creatinine metabolism, Kidney metabolism, Renal Dialysis methods
- Abstract
Maintenance of residual renal clearance is a clinical advantage, protecting against the long-term effects of uremia: although demonstrated in peritoneal dialysis, the strategies in hemodialysis are less clear. This case suggests that dialysis schedules individualized on the basis of renal clearances may help preserve residual function. SB is a 58 year-old male who started dialysis in emergency (creatinine 30.7 mg/dL) in 1993. He had a history of gout, small shrunken kidneys and moderate hypertension. The clinical diagnosis was vasculointerstitial nephropathy. Eighteen months after starting hemodialysis on a conventional thrice weekly schedule, the patient was switched to 2 sessions/week (creatinine clearance increased to 6 ml/min). Thereafter, clearances were checked in alternate months and treatment was tailored to an equivalent renal clearance > or =12 ml/min (1-2 sessions, 2-3.30 hours/week). Ten years after beginning dialysis, he is on a twice weekly schedule (3.30 hours), is normotensive, works full-time and does not want to go on a transplant waiting list.
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- 2004
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10. Twenty years of renal replacement therapy in a type 1 diabetic patient: advantages of a multiple choice dialysis system.
- Author
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Piccoli GB, Mesiano P, Mezza E, Pacitti A, Burdese M, Bermond F, Jeantet A, and Segoloni GP
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- Catheters, Indwelling, Creatinine blood, Female, Humans, Middle Aged, Treatment Outcome, Diabetes Mellitus, Type 1 complications, Diabetic Nephropathies therapy, Kidney Transplantation, Renal Dialysis
- Abstract
The prognosis of diabetic patients on renal replacement therapy (RRT) is usually poor. We report on the type 1 diabetic woman with the longest RRT follow-up in our area: over 20 years, half on dialysis, half with a renal graft. CS started RRT at age 27 on peritoneal dialysis (3 years), continued until an underdialysis syndrome developed, was switched to acetate dialysis and, because of poor tolerance, to hemofiltration which with good clinical results, allowing her to become the first Italian patient on home hemofiltration, which continued for 5 years. A cadaver graft lasted for the subsequent decade, despite several complications; afterwards she resumed bicarbonate dialysis, choosing a frequent home hemodialysis schedule. Despite several vascular access problems, her clinical conditions were good enough to candidate her for a second renal transplant, performed 3 years ago. This history of active self-care may draw attention to the advantages of a multiple choice dialysis network.
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- 2003
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11. Internet and the nephrologist: a new era?
- Author
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Piccoli GB, Burdese M, Mezza E, Quaglia M, Bermond F, Gai M, Soragna G, Bergamo D, Jeantet A, and Segoloni GP
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- Adult, Aged, Data Collection, Female, Humans, Information Services statistics & numerical data, Male, Middle Aged, Nephrology, PubMed, Surveys and Questionnaires, Databases as Topic statistics & numerical data, Internet statistics & numerical data
- Published
- 2002
- Full Text
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12. Patient knowledge and interest on dialysis efficiency: a survey.
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Piccoli GB, Mezza E, Pacitti A, Iacuzzo C, Bechis F, Quaglia M, Anania P, Garofletti Y, Martino B, Peirano G, Aglì I, Jeantet A, and Segoloni GP
- Subjects
- Adult, Aged, Books, Cartoons as Topic, Data Collection, Female, Humans, Male, Middle Aged, Self Care, Surveys and Questionnaires, Health Knowledge, Attitudes, Practice, Kidney Failure, Chronic therapy, Patient Education as Topic methods, Renal Dialysis
- Abstract
Background: Therapeutic compliance is fundamental on dialysis; however following a therapy requires a prior understanding of it. Aim of the study was to assess the need and interest for information on dialysis efficiency and to prepare a dedicated teaching tool., Methods: 72 patients, on hemodialysis in two limited-care satellite units, were given a questionnaire testing knowledge and interest on dialysis efficiency. In a subsequent second phase, following patients' suggestions, a cartoon book was prepared and opinions recorded., Results: 63 patients' returned the questionnaire. 79.4% had basic knowledge on routine blood tests, 30.1% were aware of their specific meaning. All patients asked for further information, preferring books to other media. The book "Kt/V as cartoon" was distributed; 71.2% read it, 93% scored it as good-very good. In the Unit employing flexible dialysis schedules, 22/42 patients increased dialysis time., Conclusions: Despite insufficient knowledge on dialysis efficiency, patient interest is high. An educational program is feasible and may also give practical results, such as self-increase in dialysis time.
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- 2002
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13. Mechanism involved in acute granulocytopenia in hemodialysis. Cell-membrane direct interactions.
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Camussi G, Segoloni G, Rotunno M, and Vercellone A
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- Acrylonitrile blood, Acute Disease, Blood Coagulation Factors, Cellulose analogs & derivatives, Cellulose blood, Copper, Humans, In Vitro Techniques, Membranes, Artificial, Neutrophils immunology, Agranulocytosis etiology, Platelet Aggregation, Renal Dialysis adverse effects
- Published
- 1978
14. Evaluation of the clinical and organizational impact of CAPD in the three year period from 1980-1983; the experience of 21 centers.
- Author
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Segoloni GP
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- Adolescent, Adult, Aged, Child, Clinical Trials as Topic, Female, Humans, Italy, Male, Middle Aged, Peritoneal Dialysis, Continuous Ambulatory adverse effects, Peritonitis etiology, Registries, Uremia complications, Peritoneal Dialysis statistics & numerical data, Peritoneal Dialysis, Continuous Ambulatory statistics & numerical data, Uremia therapy
- Published
- 1984
15. Dialysis today: methods, technologies and strategies.
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Vercellone A, Segoloni GP, Triolo G, Canavese C, and Messina M
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- Humans, Italy, Prognosis, Hospital Units organization & administration, Renal Dialysis
- Published
- 1980
16. Hemofiltration in diabetic uremic patients.
- Author
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Segoloni GP, Pacitti A, Squiccimarro G, Triolo G, Ragni R, Vercellone A, Civati G, Guastoni C, Perego A, Teatini U, Minetti L, and Carta Q
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- Diabetic Nephropathies blood, Diabetic Retinopathy diagnosis, Female, Humans, Insulin blood, Lactates blood, Male, Middle Aged, Renal Dialysis, Uremia blood, Blood, Diabetic Nephropathies therapy, Ultrafiltration, Uremia therapy
- Abstract
The increasing number of Diabetic Uremic Patients (DUP) starting the substitutive treatment (ST) constitutes a difficult and often disappointing problem in terms of efforts, clinical results and side-effects. While treatment of these patients by C.A.P.D. is well documented, the adoption of Hemofiltration (HF), has been, up to now scarcely considered. In order to define the potentialities of a HF policy in the treatment of these patients, data from 6 DUP treated with postdilutional HF for a 10.6 months/patient period were collected on a multi-center basis and retrospectively examined. Good results were achieved in terms of vascular stability, control of arterial hypertension and of retinopathy, clinical complications and hospitalization rate. Although C.A.P.D. may represent a first choice treatment for DUP with residual function, satisfactory glicemic control, difficult blood access and a motivation to full autonomization, HF may constitute a logical alternative when C.A.P.D. should be unmanageable (visus impairment, history of repeated peritonitis and dismetabolism, considerable weight gain): an integration of HF and C.A.P.D. can assure PDU with a continuative treatment.
- Published
- 1983
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