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https://www.readbyqxmd.com/read/28586767/quantification-and-dosing-of-renal-replacement-therapy-in-acute-kidney-injury-a-reappraisal
#1
William R Clark, Martine Leblanc, Zaccaria Ricci, Claudio Ronco
BACKGROUND/AIMS: Delivered dialysis therapy is routinely measured in the management of patients with end-stage renal disease; yet, the quantification of renal replacement prescription and delivery in acute kidney injury (AKI) is less established. While continuous renal replacement therapy (CRRT) is widely understood to have greater solute clearance capabilities relative to intermittent therapies, neither urea nor any other solute is specifically employed for CRRT dose assessments in clinical practice at present...
2017: Blood Purification
https://www.readbyqxmd.com/read/28584226/comparison-of-3-times-a-week-4-and-5-hour-in-center-hemodialysis-sessions-with-use-of-continuous-non-invasive-hemodynamic-monitoring
#2
Łukasz Czyżewski, Janusz Wyzgał, Janusz Sierdziński, Emilia Czyżewska, Jacek Smereka, Łukasz Szarpak
BACKGROUND Very aggressive ultrafiltration rate (lasting 3.5-4 h) may result in inadequate hemodialysis (HD). Our aim was to characterize HD-induced cardiovascular adaptation and its links to fluid removal during 4- vs. 5-h HD sessions. MATERIAL AND METHODS The study involved 50 HD patients. A Cardioscreen device (Messtechnik, Ilmenau, Germany) was used to perform non-invasive hemodynamic measurements during mid-week HD sessions. Body fluids and nutritional status were assessed with a Body Composition Monitor (Fresenius Medical Care)...
June 6, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28581770/collimated-propagation-of-fast-electron-beams-accelerated-by-high-contrast-laser-pulses-in-highly-resistive-shocked-carbon
#3
X Vaisseau, A Morace, M Touati, M Nakatsutsumi, S D Baton, S Hulin, Ph Nicolaï, R Nuter, D Batani, F N Beg, J Breil, R Fedosejevs, J-L Feugeas, P Forestier-Colleoni, C Fourment, S Fujioka, L Giuffrida, S Kerr, H S McLean, H Sawada, V T Tikhonchuk, J J Santos
Collimated transport of ultrahigh intensity electron current was observed in cold and in laser-shocked vitreous carbon, in agreement with simulation predictions. The fast electron beams were created by coupling high-intensity and high-contrast laser pulses onto copper-coated cones drilled into the carbon samples. The guiding mechanism-observed only for times before the shock breakout at the inner cone tip-is due to self-generated resistive magnetic fields of ∼0.5-1  kT arising from the intense currents of fast electrons in vitreous carbon, by virtue of its specific high resistivity over the range of explored background temperatures...
May 19, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28575884/predictors-of-clinical-outcomes-in-hemodialysis-patients-a-multicenter-observational-study
#4
Tayebeh Soleymanian, Hossein Niyazi, Shaghayegh Noorbakhsh Jafari Dehkordi, Shokoufeh Savaj, Hassan Argani, Iraj Najafi
INTRODUCTION: Cardiovascular and noncardiovascular mortality and morbidity rates of hemodialysis patients are high despite improvement in dialysis delivery. MATERIALS AND METHODS: Hemodialysis patients (n = 532) from 9 hemodialysis facilities were enrolled in this cohort study in September 2012. Causes of death, hospitalization, and hemodialysis exit were recorded during a 28-month follow-up period. A Cox proportional hazard model was used to predict death adjusting for case-mix variables, nutrition variables, bone mineral variables, Kt/V, vascular access, and Charlson comorbidities index...
May 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/28558715/modern-peptide-biomarkers-and-echocardiography-in-cardiac-healthy-haemodialysis-patients
#5
Franz Maximilian Rasche, Stephan Stoebe, Thomas Ebert, Silvana Feige, Andreas Hagendorff, Wilma Gertrud Rasche, Filip Barinka, Volker Busch, Ulrich Sack, Jochen G Schneider, Stephan Schiekofer
BACKGROUND: In this prospective study, we aimed to assess the haemodynamic changes before and after haemodialysis (HD) in cardiac healthy subjects on chronic HD by imaging methods and endocrine markers of fluid balance. METHODS: Mid-regional pro-atrial natriuretic peptide (MR-proANP), N-terminal prohormone of brain natriuretic peptide (NT-proBNP), vasopressin (AVP) and copeptin (CT-proAVP), metanephrines and normetanephrines, renin and aldosterone, standard transthoracic echocardiography and diameter of vena cava inferior (VCID) were performed in 20 patients with end stage renal disease (CKD5D) before and after HD and were stratified in residual excretion (RE, less or more 0...
May 30, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28552124/application-of-genetic-algorithm-for-hemodialysis-schedule-optimization
#6
Jin Woo Choi, Hajeong Lee, Jung Chan Lee, Saram Lee, Yon Su Kim, Hyung-Jin Yoon, Hee Chan Kim
BACKGROUND: The conventional hemodialysis (HD) schedule has been used for decades, even though new modalities have been introduced. Many reasons limit practices of frequent dialysis, such as patients' environments and unknown optimal schedules for each patient. This research provides a theoretical recommendation of HD schedule through genetic algorithm (GA). METHODS: An end-stage renal disease (ESRD) with various dialysis conditions was modeled through a classic variable-volume two-compartment kinetic model to simulate an anuric patient, and GA was implemented to search for an optimal HD schedule for each individual considering and ignoring burden consumption of each dialysis session...
July 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28546367/intensive-versus-minimal-standard-dosage-for-peritoneal-dialysis-in-acute-kidney-injury-a-randomized-pilot-study
#7
Watanyu Parapiboon, Treechada Chamradpan
♦Background: Dosage for peritoneal dialysis (PD) in acute kidney injury (AKI) is controversial. This study aims to find benefits and risks of intensive versus minimal standard dosage of PD in AKI. ♦ Methods: In a tertiary-hospital, 93 AKI patients who required PD between May 2015 and January 2016 were enrolled in a randomized, open-label controlled study. Patients were randomized to intensive group (> 30 L) and minimal standard group (< 20 L) of PD volume per day for the first 2 consecutive days. The primary outcome was in-hospital mortality...
May 25, 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28540893/comparison-of-intradialytic-hemodynamic-tolerance-between-on-line-hemodiafiltration-and-acetate-free-biofiltration-with-profiled-potassium-dialysate-concentration
#8
George Kosmadakis, Enrique Da Costa Correia, Frederic Somda, Didier Aguilera
Intradialytic hypotensive episodes are deleterious for hemodialysis (HD) patients. Acetate-free biofiltration with profiled potassium (AFBK) dialysate concentration may improve their cardiovascular stability. The aim of the present crossover study was to compare intradialytic hemodynamic tolerance and biological parameters between online hemodiafiltration (olHDF) and AFBK. Ten frail HD patients (8 males) with a mean age of 66.71- ± 12.31 years were studied for three months on olHDF and AFBK. There was a significant reduction of the hypotensive episodes during the AFBK period compared to the olHDF period...
May 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28540886/effect-of-hemodialysis-on-oxidants-and-antioxidant-factors-in-chronic-renal-failure
#9
Ramin Tajbakhsh, Mostafa Qorbani, Golbarg Mehrpour, Mitra Rahimzadeh, Mohammad Mehdi Azimzadeh, Hossein Mirmiranpour
The current study was conducted to assess the effect of hemodialysis (HD) on the status of plasma oxidants and antioxidants among patients with end-stage renal disease (ESRD). These parameters can have an influence on the HD process and can also be useful for follow-up of these patients. The participants of this cross-sectional study comprised 91 patients with a mean age of 51.1 ± 8.2 years on chronic HD with kt/v between 1.2 and 1.4. The etiology of ESRD in these patients was as follows: diabetes mellitus in 39, hypertension in 35, and glomerulonephritis in 17 patients...
May 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28534129/insomnia-muscular-cramps-and-pruritus-have-low-intensity-in-hemodialysis-patients-with-good-dialysis-efficiency-low-inflammation-and-arteriovenous-fistula
#10
Olga Hilda Orasan, Aniela Pop Saplontai, Angela Cozma, Simona Racasan, Ina Maria Kacso, Crina Claudia Rusu, Diana Moldovan, Dacian Tirinescu, Alina Potra, Ioan Mihai Patiu, Remus Aurel Orasan
INTRODUCTION: Insomnia, muscular cramps, pruritus and postdialysis recovery time (RT) are quality-of-life parameters that affect hemodialysis (HD) patients physically and mentally. METHODS: We included 171 end-stage renal disease patients: 115 on high-flux HD and 56 on online hemodiafiltration (HDF). Patients were asked "How long does it take you to recover from a dialysis session?" and they evaluated intensity (absent, mild, medium and severe) of insomnia, muscular cramps and pruritus in the past 4 weeks...
May 22, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28497092/the-relationship-between-dialysis-adequacy-and-serum-uric-acid-in-dialysis-patients-a-cross-sectional-multi-center-study-in-iranian-hemodialysis-centers
#11
Eghlim Nemati, Arezoo Khosravi, Behzad Einollahi, Mehdi Meshkati, Mehrdad Taghipour, Shahin Abbaszadeh
Introduction: Uric acid is one of the most significant uremic toxins accumulating in chronic renal failure patients treated with standard dialysis. Its clearance has not any exact relation with urea and creatinine clearance. Objectives: The aim of this study was to investigate the relationship between adequacy of dialysis and serum level of uric acid in dialysis patients of some dialysis centers in Iran. Patients and Methods: In this study 1271 hemodialysis patients who have been treated for more than 3 months were evaluated...
2017: Journal of Renal Injury Prevention
https://www.readbyqxmd.com/read/28490503/entropic-forces-drive-self-organization-and-membrane-fusion-by-snare-proteins
#12
Hakhamanesh Mostafavi, Sathish Thiyagarajan, Benjamin S Stratton, Erdem Karatekin, Jason M Warner, James E Rothman, Ben O'Shaughnessy
SNARE proteins are the core of the cell's fusion machinery and mediate virtually all known intracellular membrane fusion reactions on which exocytosis and trafficking depend. Fusion is catalyzed when vesicle-associated v-SNAREs form trans-SNARE complexes ("SNAREpins") with target membrane-associated t-SNAREs, a zippering-like process releasing ∼65 kT per SNAREpin. Fusion requires several SNAREpins, but how they cooperate is unknown and reports of the number required vary widely. To capture the collective behavior on the long timescales of fusion, we developed a highly coarse-grained model that retains key biophysical SNARE properties such as the zippering energy landscape and the surface charge distribution...
May 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28481830/dose-prescription-and-delivery-in-neonates-with-congenital-heart-diseases-treated-with-continuous-veno-venous-hemofiltration
#13
Zaccaria Ricci, Francesco Guzzi, Germana Tuccinardi, Luca Di Chiara, William Clark, Stuart L Goldstein, Claudio Ronco
OBJECTIVES: Renal replacement therapy may be required for acute kidney injury treatment in neonates with complex cardiac conditions. Continuous veno-venous hemofiltration is applied safely in this population but no published recommendations for dose prescription in neonates currently exist. The aim of our study was to evaluate the effects of a relatively small dialysis dose on critically ill neonates. DESIGN: Retrospective analysis of clinical charts. SETTING: Pediatric Cardiac ICU...
May 5, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28457365/understanding-bone-damage-after-kidney-transplantation-a%C3%A2-retrospective-monocentric-cross-sectional-analysis
#14
M Gregorini, G Sileno, E F Pattonieri, V Corradetti, M Abelli, E Ticozzelli, L Scudeller, M A Grignano, P Esposito, L Bogliolo, A Giacomoni, T Rampino
BACKGROUND: Kidney transplantation (KT) immunosuppression may induce bone tissue damage with bone mineral density (BMD) loss increasing bone fractures risk. Steroid therapy is considered the major player, but others factors are still under review. PATIENTS AND METHODS: We designed an observational retrospective cohort study to evaluate bone damage after KT. The prevalence of osteopenia, osteoporosis, bone fractures, and the associated risk factors were investigated...
May 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28450093/modified-creatinine-index-and-the-risk-of-bone-fracture-in-patients-undergoing-hemodialysis-the-q-cohort-study
#15
Shunsuke Yamada, Masatomo Taniguchi, Masanori Tokumoto, Ryota Yoshitomi, Hisako Yoshida, Narihito Tatsumoto, Hideki Hirakata, Satoru Fujimi, Takanari Kitazono, Kazuhiko Tsuruya
BACKGROUND: Hemodialysis patients are at increased risk for bone fracture and sarcopenia. There is close interplay between skeletal muscle and bone. However, it is still unclear whether lower skeletal muscle mass increases the risk for bone fracture. STUDY DESIGN: Cross-sectional study and prospective longitudinal cohort study. SETTING & PARTICIPANTS: An independent cohort of 78 hemodialysis patients in the cross-sectional study and 3,030 prevalent patients undergoing maintenance hemodialysis prospectively followed up for 4 years...
April 25, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28443283/vascular-access-site-for-renal-replacement-therapy-in-acute-kidney-injury-a-post-hoc-analysis-of-the-atn-study
#16
Yue-Harn Ng, Kavitha Ganta, Herbert Davis, V Shane Pankratz, Mark Unruh
BACKGROUND: Acute kidney injury requiring renal replacement therapy (RRT) in the intensive care unit portends a poor prognosis. The decisions regarding dialysis catheter placement is based mainly on physician discretion with little evidence to support the choice of dialysis catheter location. METHODS: The Veterans Affairs/National Institutes of Health Acute Renal Failure Trial Network Study was a multicenter, prospective, randomized trial of intensive vs. less intensive RRT in critically ill patients with AKI...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28407129/a-noninferiority-trial-comparing-a-heparin-grafted-membrane-plus-citrate-containing-dialysate-versus-regional-citrate-anticoagulation-results-of-the-cited-study
#17
RANDOMIZED CONTROLLED TRIAL
Björn Meijers, Christoph Metalidis, Thomas Vanhove, Ruben Poesen, Dirk Kuypers, Pieter Evenepoel
Background.: Anticoagulation is a prerequisite for successful haemodialysis. Heparin and low-molecular weight heparins are routinely used despite increased bleeding risk. Regional citrate anticoagulation (RCA) is efficacious, but is laborious and may induce metabolic disturbances. Heparin-grafted membranes are less efficacious. It is not known whether combining citrate-containing dialysate and a heparin-grafted membrane is a valid anticoagulation strategy. Methods.: We performed a randomized crossover noninferiority trial, with a prespecified noninferiority threshold of 10% in maintenance dialysis patients ( n  = 25)...
April 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28397716/analysis-of-factors-associated-with-death-in-maintenance-hemodialysis-patients-a-multicenter-study-in-china
#18
Kang-Kang Song, De-Long Zhao, Yuan-Da Wang, Yong Wang, Xue-Feng Sun, Li-Ning Miao, Zhao-Hui Ni, Hong-Li Lin, Fu-You Liu, Ying Li, Ya-Ni He, Nian-Song Wang, Cai-Li Wang, Ai-Hua Zhang, Meng-Hua Chen, Xiao-Ping Yang, Yue-Yi Deng, Feng-Min Shao, Shu-Xia Fu, Jing-Ai Fang, Guang-Yan Cai, Xiang-Mei Chen
BACKGROUND: Patients on hemodialysis have a high-mortality risk. This study analyzed factors associated with death in patients on maintenance hemodialysis (MHD). While some studies used baseline data of MHD patients, this study used the most recent data obtained from patients just prior to either a primary endpoint or the end of the study period to find the characteristics of patients preceding death. METHODS: Participants were selected from 16 blood purification centers in China from January 2012 to December 2014...
April 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28356062/successful-multigravid-pregnancy-in-a-42-year-old-patient-on-continuous-ambulatory-peritoneal-dialysis-and-a-review-of-the-literature
#19
Thiam Seong Christopher Lim, Malini Shanmuganathan, Irene Wong, Bak Leong Goh
BACKGROUND: For peritoneal dialysis patients, the likelihood of conception is low and the probability of getting through the pregnancy successfully is even lower. Almost 60 years after the first reported case of a successful pregnancy in a dialysis patient, many issues concerning pregnancy in dialysis patients remain unresolved. Our patient's pregnancy is considered high risk as she has end stage renal failure and falls in the category of advance maternal age for pregnancy. We describe here the course of her uneventful pregnancy which we hope will contribute to the overall knowledge and management of pregnancy in elderly patients receiving peritoneal dialysis...
March 29, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28337716/long-term-variation-of-serum-levels-of-uremic-toxins-in-patients-treated-by-post-dilution-high-volume-on-line-hemodiafiltration-in-comparison-to-standard-low-flux-bicarbonate-dialysis-results-from-the-redert-study
#20
Vincenzo Panichi, Maria Teresa Rocchetti, Alessia Scatena, Alberto Rosati, Massimiliano Migliori, Francesco Pizzarelli, Loreto Gesualdo
PURPOSE OF THE STUDY: Little information have been provided till now regarding the effect of high volume HDF (hv-OL-HDF) in respect to standard bicarbonate dialysis (BHD) in medium-long term protein-bound toxins removal. PROCEDURES: A randomised cross-over multicentre study (REDERT study) was designed to compare the effects of hv-OL-HDF and low-flux BHD on uremic toxins serum levels in 36 chronic dialysis patients followed for 13 months. Group 1 patients were treated with BHD (Treatment A) for 6 months, and afterwards, they were transferred to hv-OL-HDF for a further 6 months (Treatment B)...
March 24, 2017: Journal of Nephrology
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