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Hemodialyzers

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https://www.readbyqxmd.com/read/28102499/aortic-radial-pulse-wave-velocity-ratio-in-end-stage-renal-disease-patients-association-with-age-body-tissue-hydration-status-renal-failure-etiology-and-five-years-of-hemodialysis
#1
Daniel Bia, Rodolfo Valtuille, Cintia Galli, Sandra Wray, Ricardo Armentano, Yanina Zócalo, Edmundo Cabrera-Fischer
INTRODUCTION: The etiology of the end-stage renal disease (ESRD) and the hydration status may be involved in the arterial stiffening process observed in hemodialyzed patients. The ratio between carotid-femoral and carotid-radial pulse wave velocity (PWV ratio) was recently proposed to characterize the patient-specific stiffening process. AIMS: to analyze: (1) the PWV-ratio in healthy and hemodialyzed subjects, analyzing potential changes associated to etiologies of the ESRD, (2) the PWV-ratio and hydration status using multiple-frequency bioimpedance and, (3) the effects of hemodialysis on PWV-ratio in a 5-year follow-up...
January 19, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28099122/parathormone-stability-in-hemodialyzed-patients-and-healthy-subjects-comparison-on-non-centrifuged-edta-and-serum-samples-with-second-and-third-generation-assays
#2
Marie-Louise Schleck, Jean-Claude Souberbielle, Pierre Delanaye, Mario Plebani, Etienne Cavalier
BACKGROUND: Parathyroid hormone (PTH) stability is important. Many studies have shown divergent results between EDTA and serum, which are mainly linked to differences in protocols or cut-offs used to determine whether or not PTH remained stable. No studies have yet compared PTH stability as measured by second- and third-generation assays on the same samples in hemodialyzed patients and healthy subjects. METHODS: Five pairs of samples (EDTA and gel tubes) were obtained in 10 hemodialyzed patients before a dialysis session and in 10 healthy subjects...
January 18, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28067935/hepatitis-b-vaccination-in-haemodialysis-patients-an-underestimated-problem-factors-influencing-immune-responses-in-ten-years-of-observation-in-an-italian-haemodialysis-centre-and-literature-review
#3
E Cordova, I Miglia, F Festuccia, M G Sarlo, G Scornavacca, G Punzo, P Menè, C Fofi
OBJECTIVES: Despite universal infection control precautions, the risk of hepatitis B virus (HBV) infection in patients on chronic haemodialysis (HD) remains high. For this reason anti-HBV vaccination is recommended in these subjects. In hemodialyzed patients vaccinal response is often suboptimal and it's not clear what factors may influence it. STUDY DESIGN: The aim of our study is to assess the influence of some clinical and laboratory factors on seroconversion rate after anti HBV vaccination in a cohort of patients on maintenance HD...
January 2017: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/28044236/vascular-adhesion-protein-1-in-hemodialysis-and-hemodiafiltration-patients-effect-of-single-hemodialysis-session-on-its-level-in-regard-to-type-of-anticoagulant
#4
Jolanta Malyszko, Ewa Koc-Zorawska, Piotr Kozminski, Jacek S Malyszko
PURPOSE: Traditional anticoagulants used in intermittent hemodialysis (HD) are unfractionated heparin (UFH) and increasingly low molecular weight heparins (LMWHs). Repeated and prolonged exposure to UFH and/or LMWHs may further disturb hemostasis in uremic patients. Vascular adhesion protein-1 (VAP-1) is secreted by vascular smooth muscle cells, adipocytes and endothelial cells with functional monoamine oxidase activity and is elevated in atherosclerosis, diabetes mellitus and obesity...
January 2, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/27951581/micrornas-are-associated-with-uremic-toxicity-cardiovascular-calcification-and-disease
#5
Ziad A Massy, Valérie Metzinger-Le Meuth, Laurent Metzinger
BACKGROUND: Vascular calcification has been recognized to be a major risk factor in chronic kidney disease (CKD) and downstream cardiovascular complications. Micro-RNAs (miRNAs) are small noncoding RNAs comprising 20-25 nucleotides that regulate gene expression by inhibiting or degrading the target mRNA, and constitute potential new biomarkers and future therapeutic strategies. SUMMARY: We tested the relevance of several cardiovascular-specific miRNAs as new biomarkers for CKD, cardiovascular disease, and cardiovascular complications...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27940061/hemodialyzer-reuse-and-gram-negative-bloodstream-infections
#6
Chris Edens, Jacklyn Wong, Meghan Lyman, Kyle Rizzo, Duc Nguyen, Michela Blain, Sam Horwich-Scholefield, Heather Moulton-Meissner, Erin Epson, Jon Rosenberg, Priti R Patel
BACKGROUND: Clusters of bloodstream infections caused by Burkholderia cepacia and Stenotrophomonas maltophilia are uncommon, but have been previously identified in hemodialysis centers that reprocessed dialyzers for reuse on patients. We investigated an outbreak of bloodstream infections caused by B cepacia and S maltophilia among hemodialysis patients in clinics of a dialysis organization. STUDY DESIGN: Outbreak investigation, including matched case-control study...
December 7, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27935078/ischemic-myopathy-revealing-systemic-calciphylaxis
#7
Jessie Aouizerate, Laurence Valleyrie-Allanore, Nicolas Limal, S Samar Ayache, Romain K Gherardi, Vincent Audard, François Jérôme Authier
INTRODUCTION: Patients with renal failure who are being treated with dialysis frequently develop neuromuscular manifestations. Renal failure-associated calciphylaxis, also termed calcific uremic arteriolopathy (CUA), is a life-threatening condition usually observed in patients with end-stage renal disease on chronic dialysis or following renal transplantation. METHODS: We describe a hemodialyzed patient who presented with rapidly progressive unexplained systemic vasculopathy, muscle atrophy, and proximal weakness, that unexpectedly proved to be caused by calciphylaxis...
December 9, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27905009/increased-serum-al-levels-in-hemodialysis-patients-kept-enhanced-during-a-2-year-prospective-study
#8
Maria L Reina de la Torre, Herminia Lopez García de la Serrana, Loreto Martí Del Moral, Magdalena Palomares Bayo, Miguel Navarro-Alarcón
The regulation of mineral homeostasis is altered in hemodialysis patients with renal insufficiency, producing increased risk for secondary diseases like cardiovascular ones. We hypothesized that risen serum aluminum (Al) concentration in hemodialysis patients kept enhanced during a 2-year longitudinal study is associated with enhanced cardiovascular risk and influenced by medical treatments. This study reports the prospective monitoring of serum Al levels in six-monthly samplings over 2 years in 116 hemodialysis patients and a control group of 50 healthy adults...
November 30, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27886156/conformity-scores-differentiate-older-hemodialyzed-patients-and-patients-with-continuous-peritoneal-dialysis
#9
Zbigniew Nowak, Krzysztof Laudanski
BACKGROUND Conformity is a psychological variable related to the propensity of an individual to match his or her behavior and opinion to the perceived social and cultural norm, even if these do not represent the true beliefs of the person. The aim of the present study was to investigate whether the psychological variable of conformity is different in two distinct modes of renal replacement therapy (RRT) in end-stage renal disease (ESRD). MATERIAL AND METHODS A total of 56 hemodialyzed patients (HD group), 45 continuous ambulatory peritoneal dialysis patients (CAPD group) and 62 healthy volunteers (CONTR group) were enrolled in the study...
November 25, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27875812/hemodialysis-decreases-the-etiologically-related-early-vascular-aging-observed-in-end-stage-renal-disease-a-5-year-follow-up-study
#10
Daniel Bia, Cintia Galli, Yanina Zócalo, Rodolfo Valtuille, Sandra Wray, Ricardo Armentano, Edmundo Cabrera-Fischer
AIMS: To analyze the early vascular aging (EVA) in end-stage renal disease (ESRD) patients, attempting to determine a potential association between EVA and the etiology of ESRD, and to investigate the association of hemodialysis and EVA in ESRD patients during a 5-year follow-up period. METHODS: Carotid-femoral pulse wave velocity (cfPWV) was obtained in 151 chronically hemodialyzed patients (CHP) and 283 control subjects, and in 25 CHP, who were followed-up after a 5-year lapse...
November 23, 2016: Blood Purification
https://www.readbyqxmd.com/read/27834449/finite-element-modeling-of-time-dependent-sodium-exchange-across-the-hollow-fiber-of-a-hemodialyzer-by-coupling-with-a-blood-pool-model
#11
Enrico Ravagli, Elena Grandi, Paolo Rovatti, Stefano Severi
INTRODUCTION: Hollow fiber models describe the exchange of solutes between blood and dialysate across the membrane of a single fiber of the hemodialysis filter (hemodialyzer). This work aims to develop a new approach to simulate the solute exchange in a hollow fiber in a dynamic and realistic way. Sodium was chosen as our solute of interest due to its importance in hemodialysis as an osmotic regulator. METHODS: A 2-dimensional (2D) hollow fiber model based on the finite element method (FEM) is coupled to a simple blood pool model to dynamically update the concentration of the solute entering the dialyzer...
November 11, 2016: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/27786416/does-guidewire-exchange-influence-infection-rate-related-to-catheters-used-for-vascular-access-in-children-on-chronic-hemodialysis
#12
Rina R Rus, Nina Battelino, Rafael Ponikvar, Vladimir Premru, Gregor Novljan
A central venous catheter (CVC) can either be inserted "de novo" or placed by guidewire exchange (GWE). From September 1998 to September 2015, 32 children (19 boys, 13 girls) were hemodialyzed in our unit by using a CVC. The mean age at CVC insertion was 12.6 ± 0.5 years. A total of 121 uncuffed catheters were placed, either "de novo" or by GWE in 64 (52.9%) and 57 (47.1%) cases, respectively. The most frequent cause for line revision was catheter dysfunction in 40/121 (33.1%) patients. The overall incidence of bacteremia was 1...
February 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/27752002/hypertension-in-hemodialyzed-children
#13
Shatha Hussain Ali, Salman Hussain Assi, Fadhil S Hussien
Hypertension (HTN) is one of the most common sequelae of chronic kidney disease (CKD) in children. Dialysis-related HTN is predominantly caused by chronic volume overload, and as such the blood pressure (BP) can be reduced and/or brought down to normal in a sizable number of patients with improved salt and fluid balance. This study was conducted to assess the prevalence of HTN among children on hemodialysis (HD) and to evaluate the correlation of HTN with some demographic data. This is a prospective study performed on forty pediatric patients with CKD receiving maintenance HD in three centers in Baghdad...
September 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27751998/a-study-of-the-main-determinants-of-sexual-dysfunction-in-women-aged-15-45-years-on-chronic-hemodialysis
#14
Reza Hekmat, Faeze Maghsudloo, Mahmood Mohebi, Sayed Abdolrahim Rezaee, Rosita Vakili, Hoshang Rafat Panah
Sexual dysfunction (SD) is a common problem in patients with the end-stage renal disease. In contrast to SD in males, relatively little work has been performed in the field of SD in females. In this study, we tried to identify the main determinants of SD in women aged 15-45year-old on chronic hemodialysis (HD). One hundred-forty female patients aged 15-45-year-old on chronic HD were studied in the winter of the year 2013. Healthy relatives of the patients were chosen as controls and matched for age, level of education, marital status, and income...
September 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27709305/analysis-of-the-safety-evaluation-for-premarketing-clinical-trials-of-hemodialyzer-and-of-postmarketing-safety-reports-of-hemodialyzer-in-japan-and-the-us-insights-into-the-construction-of-a-sophisticated-premarketing-evaluation
#15
Masami Saito, Kiyotaka Iwasaki
Our aim was to conduct a scoping review of the regulations for hemodialyzers in the safety evaluation in Japan and the United States, and to evaluate the criteria for premarketing clinical trials and postmarketing safety reports to inform the development of a sophisticated premarketing evaluation in Japan. Regulations for approval of hemodialyzers were identified from the databases of the Ministry of Health, Labor and Welfare in Japan and the Federal Drug Agency (FDA) in the United States (US). The criteria for premarket clinical trials and postmarketing safety reports were evaluated for both countries...
October 5, 2016: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/27667446/oxidized-ldl-statin-use-morbidity-and-mortality-in-patients-receiving-maintenance-hemodialysis
#16
Sandra Wagner, Mugurel Apetrii, Ziad A Massy, Marcus E Kleber, Graciela E Delgado, Hubert Scharnagel, Winfried März, Marie Metzger, Patrick Rossignol, Alan Jardine, Hallvard Holdaas, Bengt Fellström, Roland Schmieder, Bénédicte Stengel, Faiez Zannad
Statin treatment reduces the risk of cardiovascular mortality in the general population, but it has little or no benefit in hemodialyzed (HD) patients. This may reflect different underlying pathophysiology of cardiovascular disease (CVD) in patients treated with HD, maybe involving the oxidative stress. Our aim was to assess the association of oxidized low-density lipoprotein (oxLDL), determined by Mercodia oxLDL enzyme-linked immunosorbent assay (ELISA) kit, with major adverse cardiac events (MACE) and all-cause mortality in HD patients based on the AURORA trial (rosuvastatin vs placebo), and patients not on HD from the Ludwigshafen Risk and Cardiovascular Health (LURIC) study...
January 25, 2017: Free Radical Research
https://www.readbyqxmd.com/read/27632986/influence-of-hemodialysis-on-regadenoson-clearance-in-an-in-vitro-hemodialysis-model
#17
Katherine N Gharibian, Venkatesh L Murthy, Bruce A Mueller
BACKGROUND: Regadenoson is a novel pharmacological stress agent whose disposition during hemodialysis is not known. The purpose of this study was to determine the clearance of regadenoson under varying dialytic conditions using an in vitro hemodialysis model. METHODS AND RESULTS: Whole human blood was used to analyze the effect of hemodialysis on the clearance of regadenoson. Regadenoson transmembrane clearance (CLD) was assessed for both a standard permeability and a high permeability polysulfone hemodialyzer with blood/dialysate flow rates of 300/600 and 400/800 mL/min...
September 15, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/27629729/the-content-of-reticulocyte-hemoglobin-and-serum-concentration-of-the-soluble-transferrin-receptor-for-diagnostics-of-anemia-in-chronically-hemodialyzed-patients
#18
Teresa Kurzawa, Aleksander Owczarek, Joanna K Strzelczyk, Karolina Gołąbek, Andrzej Wiczkowski
BACKGROUND: Chronic renal disease constitutes a serious worldwide clinical problem. An important issue arising early during the treatment of renal failure is anemia. Patients in the end-stage of renal disease chronically treated with hemodialysis frequently suffer from anemia with iron deficiency. OBJECTIVES: The aim of the study was to evaluate the usefulness of determining the reticulocyte hemoglobin content and serum concentration of soluble transferrin receptor in the detection of anemia caused by iron deficiency in comparison with the classic markers of iron circulation in serum in chronic dialysis patients with ESRD...
May 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/27605542/the-survival-benefit-of-fistula-first-catheter-last-in-hemodialysis-is-primarily-due-to-patient-factors
#19
Robert S Brown, Bhanu K Patibandla, Alexander S Goldfarb-Rumyantzev
Patients needing hemodialysis are advised to have arteriovenous fistulas rather than catheters because of significantly lower mortality rates. However, disparities in fistula placement raise the possibility that patient factors have a role in this apparent mortality benefit. We derived a cohort of 115,425 patients on incident hemodialysis ≥67 years old from the US Renal Data System with linked Medicare claims to identify the first predialysis vascular access placed. We compared mortality outcomes in patients initiating hemodialysis with a fistula placed first, a catheter after a fistula placed first failed, or a catheter placed first (n=90,517; reference group)...
February 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27566059/budget-impact-of-secondary-hyperparathyroidism-treatment-in-chronic-kidney-disease-in-an-ecuadorian-social-security-hospital
#20
Luis Manjarres, Pilar Sanchez, María C Cabezas, Marco Fornasini, Valeria Freire, Adelin Albert
BACKGROUND: Chronic kidney disease (CKD) is a disorder with high morbidity and mortality worldwide whose complications generate multiple costs. In Ecuador, only a few healthcare institutions have implemented management protocols aimed to reduce costs and to improve the quality of life of patients. The aim of this study is to evaluate the short-term (1-year) and long-term (5-year) costs and savings in the management of secondary hyperparathyroidism (SHPT) of hemodialyzed CKD patients by comparing calcitriol and paricalcitol in a large social security hospital in Quito, Ecuador...
2016: BMC Health Services Research
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