bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Randomized, Multicenter, Open-Label Trial to Establish Therapeutic Equivalence between the Carex and Ultra Disconnect Systems in Patients on Continuous Ambulatory Peritoneal Dialysis
Authors: Ong Loke-Meng , Lim Teck-Onn , Hooi Lai-Seong , Morad Zaki , Tan Poh-Choo , Wong Hin-Seng , Lim Yam-Ngo , Ghazalli Rozina , Tan Chwee-Choon , Shaariah Wan , Liew Boon-Seng 
Published: February 2020

Objective In the present study, we undertook to establish therapeutic equivalence with respect to peritonitis and technique failure between the Carex disconnect system (B. Braun Carex, Mirandola, Italy) and the standard Ultra system (Baxter Healthcare, Tokyo, Japan) in patients on continuous ambulatory peritoneal dialysis (CAPD). Design This multicenter, parallel group, randomized controlled trial involved 363 prevalent CAPD patients from 8 centers. The primary endpoint was peritonitis rate; secondary endpoints were technique failure and technical problems encountered. The duration of the evaluation was 1 year. Results The risk of peritonitis on Carex varied between the centers. We found a significant treatment-center interaction effect (likelihood ratio test: p = 0.03). The incidence rate ratio (IRR) of peritonitis on Carex as compared with Ultra ranged from 0.4 to 7.2. In two centers, Carex was inferior to Ultra with regard to peritonitis; but, in five centers, the results were inconclusive. Equivalence was not demonstrated in any center. The overall rate of peritonitis in the Carex group was twice that in the Ultra group [IRR: 2.18; 95% confidence interval (CI): 1.51 to 3.14]. Technique failure and technical problems were more common with the Carex system. Technique failure rate at 1 year was 44% in the Carex group and 22% in the Ultra group. Conclusions Equivalence between the Carex disconnect system and the Ultra disconnect system could not be demonstrated. The risk of peritonitis on Carex varied significantly between centers.
Use of Cleansing Agents at the Peritoneal Catheter Exit Site
Authors: Wong Flora S.Y. 
Published: February 2020

Heavy bacterial colonization results in exit-site infection. Antiseptic and non antiseptic agents have both been used for exit-site cleansing. An ideal cleansing agent should not only reduce the number of microorganisms, but should also be harmless to the body's defenses and should not interfere with wound healing. In vitro studies using animal cells have demonstrated that some antiseptic agents have adverse effects on wound healing. Strong cytotoxic antiseptics should be discouraged in exit-site cleansing. In choosing an appropriate cleansing agent for exit-site care, the phase of wound healing, the condition of the exit site, and the goal of cleansing should be taken into consideration. Antimicrobial soap is recommended for cleansing a healed exit site, but biocompatible solution is preferred for the postoperative, infected, or traumatized exit site. In vivo studies on the effectiveness of some cleansing agents are still lacking, and clinical study of exit-site cleansing is needed to determine the most effective agents for the task.
Searching for the Reasons for Drop-Out from Peritoneal Dialysis: A Nationwide Survey in Japan
Authors:   (Study Group for Withdrawal from PD in Japan), Kawaguchi Yoshindo , Ishizaki Takashi , Imada Akio , Oohira Seiji , Kuriyama Satoru , Nakamoto Hidetomo , Nakamoto Masahiko , Hiramatu Makoto , Maeda Kenzi , Ota Kazuo 
Published: February 2020

Purpose We wanted to clarify, in a large population, the reasons that peritoneal dialysis (PD) was interrupted and to propose appropriate strategies that might prolong the use of PD as a renal replacement therapy. Patients and Methods We enrolled 5 391 patients from 439 centers into the study. Each center used a worksheet to report details about patients who either transferred to hemodialysis (HD) or died on continuous ambulatory peritoneal dialysis (CAPD) over a 6-month period from 1 April 2000, to 30 September 2000. Results We collected 252 drop-out cases from 141 centers. Of the 252 cases, 170 (67.5%) involved transfer to HD, and 82 (32.5%) involved death while on PD. Primary renal diseases were chronic nephritis (CN: 51.6%), diabetic nephropathy (DM: 26.6%), nephrosclerosis (4%), and unspecified or other condition (15.8%). Mean duration on PD in drop-out cases was 4.47 years. The age of patients at transfer to HD was younger (53.7 years) than the age of patients at death on PD (65.2 years). Patients with CN remained on PD significantly longer than did patients with DM (5 years vs 2.4 years). The three main reasons for PD discontinuation were overhydration because of ultrafiltration failure (UFF) or poor compliance with salt and fluid restrictions (34.1%); peritonitis (30.1%); and preference of the physician, patient, or family (6.5%). The proportional share represented by those three major reasons varied with the number of years since PD initiation (from 1 year to more than 8 years). Patients who had been on PD for a longer time were more likely to drop out because of UFF and less likely to drop out because of peritonitis. The three major causes of death on CAPD were cerebrovascular accident (22%), ischemic heart disease (14.6%), and sudden death (9.8%). Conclusion Approximately 10% of patients drop out from PD programs annually in Japan. To prolong PD treatment, new solutions that better preserve peritoneal function need to be developed, and patients and caregivers alike need to receive intensive education in preventing and treating peritonitis.
Setting up a Continuous Ambulatory Peritoneal Dialysis Training Program
Authors: Kong Irene L.L. , Yip Irene L.P. , Mok Grace W.S. , Chan Soso Y.M. , Tang Candic M.K. , Wong Sharon W.Y. , Tsui Rebecca B.T. , Tsang Wai-kay , Fung Samuel K.S. , Chan Hilda W.H. , Tong Matthew K.L. 
Published: February 2020

Continuous ambulatory peritoneal dialysis (CAPD) training programs have become fundamental patient education programs in renal centers providing peritoneal dialysis (PD) services. Several key topics must be addressed in setting up a CAPD training program: • Health care and organizational issues • Multidisciplinary team approach • Evidence-based practice • Pre-training patient assessment • Patient training • Program evaluation The PD nurses should identify key learning objectives for patient training. The essential elements of CAPD training are the training content and schedule, training assessment, and teaching methods. Program set-up also includes establishing a back-up system and follow-up protocols, which are essential for continuity of care in renal patients. Outcomes such as rates of peritonitis and exit-site infection, unplanned readmission, and patient satisfaction are all important indicators when the results of CAPD training programs are reviewed. The development and successful implementation of a cost-effective CAPD training program has a significant impact on patient outcomes in the renal specialty.
Chronic Peritoneal Dialysis—A Single-Center Experience
Authors: Malik Ghulam H. , Al-Harbi Ali Swaid , Al-Mohaya Suleiman A. , Al-Awaishe Raed , Kechrid Mohammad C. , Zohair Akilan , Shetia Mohammad S. , Azhari Osman H. 
Published: February 2020

Objective In Saudi Arabia, experience with continuous ambulatory peritoneal dialysis (CAPD) as a renal replacement therapy is limited, and publications are scanty. The present study was undertaken to evaluate CAPD in the Saudi population. Patients and Methods All patients managed by CAPD from May 1993 to September 2002 were included in the study. Tenckhoff indwelling silicone-rubber double-cuff catheters were surgically implanted. Peritoneal dialysis (PD) was started 2 weeks after catheter insertion. Generally, 2-L exchanges 4 times daily were used. Our total of 91 PD patients included 50 men in the age range 13 – 80 years (mean: 48 ± 18 years), and 41 women in the age range 16 – 76 years (mean: 52 ± 18 years). Forty-nine patients performed dialysis by themselves; 42 patients needed a helper. Results Between April 2001 and September 2002, we noted, on average, 1 episode of peritonitis per 21 patient–months and 1 episode of exit-site infection per 24 patient–months. The most common causative organisms for peritonitis were Pseudomonas (16%), Staphylococcus epidermidis (16%), and Staphylococcus aureus (7%). No organisms were grown in 13% of peritonitis episodes. The organisms most commonly responsible for exit-site infection were Pseudomonas aeruginosa (50%) and Staphylococcus (31%). We removed catheters from 32 patients, 12 of those for mechanical reasons. Of the 20 patients whose catheter was removed for infection, P. aeruginosa was cultured in 11 cases. Nine of 23 patients switched to hemodialysis were switched for refractory peritonitis. By the end of the study, 38 patients were still on CAPD, 23 had been switched to hemodialysis, 10 had undergone renal transplantation, and 20 had died. The major causes of death were peritonitis with sepsis ( n = 6), cardiovascular causes ( n = 5), and sudden death at home or in other hospitals ( n = 5). Conclusion Continuous ambulatory peritoneal dialysis is a viable option of renal replacement therapy in Saudi Arabia. The main problem encountered was peritonitis.
Biocompatibility of Peritoneal Dialysis Fluids: Long-term Exposure of Nonuremic Rats
Authors: Musi Barbara , Braide Magnus , Carlsson Ola , Wieslander Anders , Albrektsson Ann , Ketteler Markus , Westenfeld Ralf , Floege Jürgen , Rippe Bengt 
Published: February 2020

Objectives Long-term peritoneal dialysis (PD) leads to structural and functional changes in the peritoneum. The aim of the present study was to investigate the long-term effects of PD fluid components, glucose and glucose degradation products (GDP), and lactate-buffered solution on morphology and transport characteristics in a nonuremic rat model. Methods Rats were subjected to two daily intraperitoneal injections (20 mL/day) during 12 weeks of one of the following: commercial PD fluid (Gambrosol, 4%; Gambro AB, Lund, Sweden), commercial PD fluid with low GDP levels (Gambrosol trio, 4%; Gambro AB), sterile-filtered PD fluid (4%) without GDP, or a glucose-free lactate-buffered PD fluid. Punctured and untreated controls were used. Following exposure, the rats underwent a single 4-hour PD dwell (30 mL, 4% glucose) to determine peritoneal function. Additionally, submesothelial tissue thickness, percentage of high mesothelial cells (perpendicular diameter > 2 μm), vascular density, vascular endothelial growth factor (VEGF), and transforming growth factor (TGF) β1 mRNA expression were determined. Submesothelial collagen concentration was estimated by van Gieson staining. Results Submesothelial tissue thickness and vascular density, mediated by VEGF and TGFβ production, in the diaphragmatic peritoneum increased significantly in rats exposed to any PD fluid. Gambrosol induced a marked increased fibrosis of the hepatic peritoneum. A significant increase in high mesothelial cells was observed in the Gambrosol group only. Net ultrafiltration was reduced in the Gambrosol and in the glucose-free groups compared to untreated controls. Small solute transport was unchanged, but all groups exposed to fluids showed significantly increased lymph flow. Conclusions Our results show that long-term exposure to different components of PD fluids leads to mesothelial cell damage, submesothelial fibrosis, and neoangiogenesis. Mesothelial cell damage could be connected to the presence of GDP; the other changes were similar for all fluids. Peritoneal transport characteristics did not change in any consistent way and the neoangiogenesis observed was not paralleled by increased solute transport.
Evidence for Less Irritation to the Peritoneal Membrane in Rats Dialyzed with Solutions Low in Glucose Degradation Products
Authors: Wieczorowska–Tobis Katarzyna , Brelinska Renata , Witowski Janusz , Passlick–Deetjen Jutta , Schaub Thomas P. , Schilling Holger , Breborowicz Andrzej 
Published: February 2020

Background Acidic pH and the presence of glucose degradation products (GDP) are believed to compromise the biocompatibility of peritoneal dialysis fluids (PDF). The present study examines the effects of long-term exposure to GDP and low pH by comparing conventional PDF and a new, neutral pH, low GDP solution. Methods All experiments were performed using a chronic infusion model of dialysis in nonuremic rats. The animals were treated for 6 weeks with 2 daily injections of 4.25% glucose-containing PDF. The following PDF were tested: CAPD3 (single-chamber bag, low pH, high GDP), CAPD3 pH 7.4 (single-chamber bag, neutral pH, high GDP), CAPD3-Balance (double-chamber bag, neutral pH, low GDP). All test solutions were obtained from Fresenius Medical Care, Bad Homburg, Germany. Results After 6 weeks of exposure, peritoneal permeability to water, urea, creatinine, glucose, and sodium, assessed by peritoneal equilibration test, was similar in all groups. However, compared to other PDF, dialysis with CAPD3-Balance was associated with reduced concentrations of protein and hyaluronan in the dialysate, decreased peritoneal eosinophilia, and reduced dialysate levels of chemokines CCL2/MCP-1 and CCL5/RANTES. Morphologic changes in the peritoneal membrane of CAPD3-Balance-treated animals were much less pronounced and included reduced vascular density, preservation of the mesothelial monolayer and intercellular junction, and no reduplication of the submesothelial basement membrane. Conclusions A new generation of PDF with physiologic pH and low GDP level produce less irritation to the peritoneal membrane and better preserve its structural integrity. This effect seems to be related predominantly to minimized GDP concentrations.
Fibrin Glue is Useful in Preventing Early Dialysate Leakage in Children on Chronic Peritoneal Dialysis
Authors: Sojo Ernesto T. , Grosman Monica D. , Monteverde Marta L. , Bailez Marcela M. , Delgado Norma 
Published: February 2020

Objective To assess if application of fibrin glue sealant to the peritoneal cuff suture is useful in the prevention of early dialysate leakage in children with end-stage renal disease on chronic peritoneal dialysis (CPD). Design Single-center, open-label, prospective randomized study. Setting University Pediatric Hospital. Methods 52 catheters were implanted in 45 children (mean age 6.2 ± 4.5 years). Catheters were randomly assigned to either the control group or the sealant group. In the latter group, 1 mL of fibrin glue sealant was applied to the peritoneal cuff suture. 18 catheters were used for the first time within 5 days after implantation (early-used catheters). Leakage, exit-site or tunnel infection, peritonitis, and adverse secondary effects were evaluated during the initial 60 days after implantation. Results No adverse secondary effects were seen after the application of the fibrin glue sealant. The incidence of exit/tunnel infection and peritonitis was similar in the two groups. The incidence of leakage was significantly lower in the sealant group ( p < 0.02). In the early-used catheters, leakage was detected in 9% of the catheters in the sealant group and in 57% of the control group ( p < 0.05). Conclusions The application of 1 mL of fibrin glue to the peritoneal cuff suture prevented early dialysate leakage without secondary adverse effects in children on CPD.
A Randomized Clinical Trial with a 0.6% Amino Acid/1.4% Glycerol Peritoneal Dialysis Solution
Authors: Van Biesen Wim , Boer Walter , De Greve Bart , Dequidt Clement , Vijt Denise , Faict Dirk , Lameire Norbert 
Published: February 2020

Background Glucose is an accepted osmotic agent for peritoneal dialysis (PD) although it has several drawbacks. Some of these drawbacks have been addressed by the introduction of solutions with low glucose degradation products and physiological pH in dual-chambered bags. Despite this achievement, there is a need for alternative osmotic agents. This randomized clinical trial analyzes 3-month's clinical experience with a mixture of 0.6% amino acids and 1.4% glycerol. Methods The study was performed at the renal units of the University Hospitals Ghent, Belgium, and Utrecht, The Netherlands. Stable PD patients were randomized for either protocol A (test solution, n = 5) or protocol B (control regimen, n = 5). In both protocols, there was a run-in phase of 1 month with a dialysis regimen of 2 × 2 L 2.27% glucose solution (Dianeal; Baxter, Nivelles, Belgium), 1 × 2 L Extraneal (Baxter), and 1 × 2 L glucose solution (Dianeal). After this month-long run-in period, patients in group A received during 3 months 2 × 2 L amino acid/glycerol solution, 1 × 2 L Extraneal, and at least 1 × 2 L of a classic glucose solution. Results Glucose absorption decreased in the test group during the test phase (from 84.2 ± 8.7 to 11.7 ± 11.6 g/24 hours, p = 0.001). Dialysate levels of cancer antigen 125 (CA125) increased in the test group, from 17.5 ± 11.0 to 32.4 ± 4.6 units/L ( p = 0.04), whereas, in the control group, the levels remained stable (15.5 ± 8.7 and 14.9 ± 9.8 units/L respectively, p = 0.4). There were no differences in serum urea, serum bicarbonate, serum osmolarity, serum albumin, or parameters related to skin-fold thickness or serum glycerol levels between control and test solutions. No differences were observed in obtained ultrafiltration after a 4-hour dwell with 2.27% glucose or the test solution, both measured at week 4 of the run-in period and week 12 of the test period. Conclusion This study demonstrated that the use of a new 0.6% amino acid/1.4% glycerol-containing dialysis solution is safe and well tolerated. Glucose load was reduced significantly and dialysate CA125 levels improved significantly. Ultrafiltration was comparable with that of a 2.27% glucose solution. All these factors, in combination with the potential nutritional benefits, can contribute to a beneficial impact on the success of the PD technique. Further long-term studies in larger patient groups are warranted to explore the potential of this promising new solution.
Amino Acid-Based Peritoneal Dialysis Solution Stimulates Mesothelial Nitric Oxide Production
Authors: Reimann Doreen , Dachs Daniel , Meye Constanze , Gross Peter 
Published: February 2020

Objective Ultrafiltration failure is a common problem in continuous ambulatory peritoneal dialysis. Recent work has indicated a role of enhanced expression of nitric oxide synthase (NOS) in ultrafiltration failure. However, the conditions predisposing to increased generation of NO by the peritoneum have not been studied in detail and the cell types potentially involved have not been tested individually. Design We performed experiments in human peritoneal mesothelial cells (HPMC) in culture. Amino acid-based dialysis solution (Nutrineal; Baxter Deutschland GmbH, München, Germany), L-arginine, and glucose-containing control solutions were used and we observed the effects on the HPMC. We reasoned that amino acid-based dialysis solutions containing L-arginine, the substrate of NOS, might influence mesothelial NO generation. Nitric oxide production was measured in the supernatant using the Griess reaction. We studied the effect of the combined NOS inhibitor L-NMMA and specified the isoform of NOS involved. Results In serum-free control medium, the cells exhibited baseline generation of nitrite at a rate of 5.4 ± 0.5 μmol/g protein. Addition of 6 mmol/L L-arginine to the control medium increased nitrite significantly (11.8 ± 0.66 μmol/g protein, p < 0.002), as did amino acid-based dialysis solution (15.7 ± 1.3 μmol/g protein, p < 0.002); L-NMMA caused a significant reduction of this nitrite. HPMC expressed eNOS (NOSIII) when grown in L-arginine-supplemented medium, shown by immunocytochemistry and by reverse transcriptase-polymer chain reaction. Biochemical exposure to a calcium ionophore in 1 μmol/L concentration approximately doubled the nitrite production by L-arginine-incubated cells. Conclusion Peritoneal mesothelial cells generate NO in vitro. Generation of NO increased further in response to L-arginine supplementation of the culture medium and to amino acid-containing dialysis solution. Mesothelial cells express eNOS, which was likely involved in the observed peritoneal NO generation.
PD Fluids Contain High Concentrations of Cytotoxic GDPs Directly after Sterilization
Authors: Erixon Martin , Lindén Torbjörn , Kjellstrand Per , Carlsson Ola , Ernebrant Malin , Forsbäck Gunita , Wieslander Anders , Jönsson Jan Åke 
Published: February 2020

Objective Glucose degradation products (GDPs) in peritoneal dialysis (PD) fluids are cytotoxic and affect the survival of the peritoneal membrane. One of the most reactive GDPs in PD fluids is 3,4-dideoxyglucosone-3-ene (3,4-DGE). 3,4-DGE has been reported as an intermediate between 3-deoxyglucosone (3-DG) and 5-hydroxymethyl furaldehyde (5-HMF) during degradation of glucose. In PD fluids, 3,4-DGE exists in a temperature-dependent equilibrium with a pool of unidentified substances. The aim of this study was to explore this equilibrium and its temperature dependence during the first months of storage after the sterilization procedure. Methods GDPs and inhibition of cell growth (ICG) were measured directly after sterilization of the PD fluid and during storage at different temperatures for 60 days. The following GDPs were analyzed: 3-DG, 3,4-DGE, 5-HMF, formaldehyde, acetaldehyde, glyoxal, and methylglyoxal. Results Immediately after sterilization, the concentration of 3,4-DGE was 125 μmol/L. During the first weeks of storage, it decreased by about 80%. At the same time, the 3-DG concentration increased. None of the other GDPs were significantly affected. Cytotoxicity correlated well with the concentration of 3,4-DGE. When pure 3,4-DGE was substituted for the lost amount of 3,4-DGE after 30 days of storage, the initial ICG was almost completely regained. Conclusions Heat sterilization of PD fluids promotes the formation of large quantities of 3,4-DGE, rendering the fluid highly cytotoxic. During storage, the main part of 3,4-DGE is reversibly converted in a temperature-dependent manner to a less cytotoxic pool, consisting mainly of 3-DG. Cytotoxicity seems to be dependent exclusively on 3,4-DGE. In order to avoid higher levels of 3,4-DGE concentrations, PD fluids should not be used too soon after sterilization and should not be stored at temperatures above room temperature.