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Warfarin and dialysis

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https://www.readbyqxmd.com/read/29219209/warfarin-use-and-the-risk-of-stroke-bleeding-and-mortality-in-older-adults-on-dialysis-with-incident-atrial-fibrillation
#1
Jingwen Tan, Sunjae Bae, Jodi B Segal, Junya Zhu, G Caleb Alexander, Dorry L Segev, Mara McAdams-DeMarco
AIM: There is conflicting evidence regarding the safety and effectiveness of warfarin for atrial fibrillation (AF) treatment among older end-stage renal disease (ESRD) patients, and differences among subgroups are unclear. METHODS: Older dialysis patients who were newly diagnosed with AF (7/2007-12/2011) were identified in the United States Renal Data System. The adjusted hazard ratios (HR) of the outcomes (any stroke, ischemic stroke, major bleeding, severe gastrointestinal bleeding, and death) by time-varying warfarin use were estimated using Cox regression accounting for the inverse probability of treatment weight...
December 8, 2017: Nephrology
https://www.readbyqxmd.com/read/29207361/patient-factors-but-not-the-use-of-novel-anticoagulants-or-warfarin-are-associated-with-internal-jugular-vein-access-site-hematoma-after-right-heart-catheterization
#2
Osama Dasa, Qaiser Shafiq, Mohammed Ruzieh, Luai Alhazmi, Maen Al-Dabbas, Zaid Ammari, Samer Khouri, George Moukarbel
INTRODUCTION: Right heart catheterization (RHC) is routinely performed to assess hemodynamics. Generally, anticoagulants are held prior to the procedure. At our center, anticoagulants are continued and ultrasound guidance is always used for internal jugular vein access. A micropuncture access kit is used to place a 5 or 6 Fr sheath using the modified Seldinger technique. Manual compression is applied for 10-15 min and the patient is observed for at least 2 hours after the procedure. In a retrospective analysis, we investigated the risk of bleeding complications associated with RHC via the internal jugular vein in patients with and without full anticoagulation...
December 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29193545/identification-and-characterization-of-a-single-high-affinity-fatty-acid-binding-site-in-human-serum-albumin
#3
Stefan Petry, Lea Wenskowsky, Herman Schreuder, Volker Derdau, Hans Matter, Julia Volkmar, Till Opatz
A single high-affinity fatty acid binding site in the important human transport protein serum albumin (HSA) is identified and characterized using a NBD (7-nitrobenz-2-oxa-1,3-diazol-4-yl)-C12 fatty acid. This ligand exhibits a 1:1 binding stoichiometry in its HSA complex with high site-specificity. The complex dissociation constant is determined by titration experiments as well as radioactive equilibrium dialysis. Competition experiments with known HSA-binding drugs warfarin and ibuprofen confirm the new binding site to be different from Sudlow-sites I and II...
November 28, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29147170/clinical-assessment-of-warfarin-therapy-in-patients-with-maintenance-dialysis-clinical-efficacy-risks-and-development-of-calciphylaxis
#4
Hajime Hasegawa
Recent years, multiple studies regarding clinical efficacy and risks of Warfarin therapy in dialysis patients have been reported, and not a few reports conclude that clinical advantage of Warfarin is questionable in dialysis patients. Conversely, its hemorrhagic risk might be a little more serious in dialysis patients comparing to non-dialysis patients. Basically, it is assumed that long-term administration of Warfarin accelerates the development of vascular athelosclerosis because of the abolished anti-calcification effect of Gla-protein activation by decreased vitamin K activity...
September 25, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29117741/%C3%AE-thromboglobulin-may-not-reflect-platelet-activation-during-haemodialysis-with-the-hepran-membrane
#5
Solbjørg Sagedal, Leiv Sandvik, Olav Klingenberg, Per Morten Sandset
BACKGROUND: When blood passes through the extracorporeal circuit during haemodialysis (HD) undesirable effects including platelet degranulation and coagulation activation take place. β-thromboglobulin (β-TG) is a sensitive marker of platelet activation. The aim of this study was to investigate platelet degranulation and coagulation activation during HD with the heparin-coated dialysis membrane HeprAN. METHODS: Four HD sessions were evaluated in each of 12 chronic HD patients...
December 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29058165/clinical-characteristics-and-risk-factors-associated-with-mortality-in-calcific-uremic-arteriolopathy
#6
Peter W Santos, Jianghua He, Ahmad Tuffaha, James B Wetmore
BACKGROUND: Calcific uremic arteriolopathy (CUA) is an often-fatal condition in dialysis patients. The clinical descriptions and treatments of CUA patients have been confined mostly to case reports. We report a comprehensive characterization of CUA and its associated diagnosis, treatment patterns, and outcome. METHODS: An internet-based registry collected information about CUA in dialysis patients. Univariate analysis using Cox proportional hazards models estimated hazard ratios of the association between clinical characteristics, laboratory values, and treatments with all-cause mortality...
December 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/29026877/prolonged-delayed-renal-graft-function-secondary-to-venous-hypertension
#7
Suraj Mishra, Gaurav Gupta, I Moinuddin, Brian Strife, Uma Prasad, D Massey, Anne King, Dhiren Kumar, Chandra S Bhati
The case of a 39-year-old highly sensitized woman who underwent second renal transplantation after being on warfarin because of a history of frequent thromboses of her left femoral arteriovenous graft (AVG) is reported here. The patient received a flow cytometric positive crossmatch kidney transplant from a deceased donor. Her posttransplant course was complicated by prolonged delayed graft function (DGF) lasting for 9 months. Antibody-mediated rejection occurred in the immediate postoperative period. This resolved after treatment, and resolution was confirmed by repeat biopsy...
October 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28992319/atrial-fibrillation-in-kidney-transplant-recipients-is-there-a-place-for-the-novel-drugs
#8
Jolanta Malyszko, Paulina Lopatowska, Elzbieta Mlodawska, Dominika Musialowska, Jacek S Malyszko, Anna Tomaszuk-Kazberuk
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia of high clinical importance, occurring in 2% of the general population and in 19-24% in patients with chronic kidney disease. It is a well-known risk factor for cardiovascular morbidity and mortality. Kidney transplant recipients with a history of AF were associated with significantly higher rate of ischaemic strokes, graft failure and post-transplant mortality. AF occurs in over 7% of kidney transplant recipients in the first 3 years after transplantation and is associated with reduced graft and patient survival...
September 7, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28948673/piperine-decreases-binding-of-drugs-to-human-plasma-and-increases-uptake-by-brain-microvascular-endothelial-cells
#9
Raghvendra K Dubey, Brigitte Leeners, Bruno Imthurn, Gabriele Susanne Merki-Feld, Marinella Rosselli
We previously reported that piperine, an active alkaloidal principal of black and long peppers, enhances drug bioavailability by inhibiting drug metabolism. Another mechanism influencing drug availability/uptake is its free fraction. Since piperine is highly lipophilic, we hypothesize that it could also interact with drugs through binding displacement and influence their bioavailability. Accordingly, using equilibrium dialysis, we investigated whether piperine alters the binding of model drug ligands, that is flunitrazepam, diazepam, warfarin, salicylic acid, propranolol, lidocaine, and disopyramide to human plasma (n = 4)...
September 26, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28933798/pharmacokinetics-of-tecarfarin-and-warfarin-in-patients-with-severe-chronic-kidney-disease
#10
Mark Midei, Detlef Albrecht, Mintu P Turakhia, Daniel Ries, Thomas Marbury, William Smith, Debbie Dillon, Peter G Milner, Mark G Midei
Chronic kidney disease (CKD) complicates warfarin anticoagulation partially through its effect on CYP2C9 activity. Tecarfarin, a novel vitamin K antagonist, is not metabolized by CYP2C9. To evaluate the effect of CKD on their metabolism, we measured PK parameters of warfarin and tecarfarin in subjects with and without CKD. CKD subjects with estimated glomerular filtration rate < 30 mL/min not on dialysis (n = 13) were matched to healthy volunteers (HVs) (n = 10). Each subject was randomized to either warfarin 10 mg or tecarfarin 30 mg and was later crossed over to the other drug...
September 21, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28910806/warfarin-use-and-increased-mortality-in-end-stage-renal-disease
#11
Mark C Lin, Elani Streja, Melissa Soohoo, Medhat Hanna, Javad Savoj, Kamyar Kalantar-Zadeh, Wei Ling Lau
BACKGROUND: Controversy exists regarding the benefits and risks of warfarin therapy in chronic kidney disease (CKD) and end-stage renal disease (ESRD) patients. In this study, we assessed mortality and cardiovascular outcomes associated with warfarin treatment in patients with stages 3-5 CKD and ESRD admitted to the University of California-Irvine Medical Center. METHODS: In a retrospective matched cohort study, we identified 59 adult patients with stages 3-6 CKD initiated on warfarin during the period 2011-2013, and 144 patients with stages 3-6 CKD who had indications for anticoagulation therapy but were not initiated on warfarin...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28856671/direct-oral-anticoagulant-medications-in-calciphylaxis
#12
Brian J King, Rokea A El-Azhary, Marian T McEvoy, Raymond C Shields, Robert D McBane, James T McCarthy, Mark D P Davis
BACKGROUND: Recent studies suggest that calciphylaxis is a thrombotic condition in which arteriolar thrombosis leads to painful skin infarcts and consequent morbidity and mortality. Paradoxically, warfarin is implicated as a risk factor for calciphylaxis. Our objective is to report the use of oral direct thrombin and factor Xa inhibitors (termed direct oral anticoagulants [DOACs]) in patients with calciphylaxis. METHODS: We retrospectively reviewed records of 16 patients with calciphylaxis who received concomitant administration of novel anticoagulants...
October 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28801476/warfarin-use-in-patients-with-atrial-fibrillation-undergoing-hemodialysis-a-nationwide-population-based-study
#13
Chang-Yun Yoon, Juhwan Noh, Jong Hyun Jhee, Tae Ik Chang, Ea Wha Kang, Youn Kyung Kee, Hyoungnae Kim, Seohyun Park, Hae-Ryong Yun, Su-Young Jung, Hyung Jung Oh, Jung Tak Park, Seung Hyeok Han, Shin-Wook Kang, Changsoo Kim, Tae-Hyun Yoo
BACKGROUND AND PURPOSE: The aim of this study is to elucidate the effects of warfarin use in patients with atrial fibrillation undergoing dialysis using a population-based Korean registry. METHODS: Data were extracted from the Health Insurance Review and Assessment Service, which is a nationwide, mandatory social insurance database of all Korean citizens enrolled in the National Health Information Service between 2009 and 2013. Thromboembolic and hemorrhagic outcomes were analyzed according to warfarin use...
September 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28682563/-non-vitamin-k-dependent-oral-anticoagulants-noacs-in-chronic-kidney-disease-patients-with-non-valvular-atrial-fibrillation
#14
REVIEW
Luca Di Lullo, Vincenzo Barbera, Antonio Bellasi, Mario Cozzolino, Domenico Russo, Giovanni Otranto, Francesca Santoboni, Claudio Ronco
Atrial fibrillation (AF) represents the most common arrhythmia in patients with chronic kidney disease (CKD). As in the general population, AF is associated with an increased risk of thromboembolism and stroke, according to progressive decline of glomerular filtration rate (GFR). However, CKD patients, especially those on renal replacement therapy (RRT), also exhibit an increased risk of bleeding, especially from the gastrointestinal tract. Oral anticoagulation is the most effective form of thromboprophylaxis in patients with AF presenting increased risk of stroke...
April 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28682039/-noacs-and-chronic-kidney-disease
#15
REVIEW
Luca Di Lullo, Vincenzo Barbera, Antonio Bellasi, Mario Cozzolino, Domenico Russo, Giovanni Otranto, Francesca Santoboni, Claudio Ronco
Atrial fibrillation (AF) represents the most common arrhythmia in patients with chronic kidney disease (CKD). As in the general population, AF is associated with an increased risk of thromboembolism and stroke, according to progressive decline of glomerular filtration rate (GFR). However, CKD patients, especially those on renal replacement therapy (RRT), also exhibit an increased risk of bleeding, especially from the gastrointestinal tract. Oral anticoagulation is the most effective form of thromboprophylaxis in patients with AF presenting increased risk of stroke...
March 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28616216/warfarin-related-nephropathy-induced-by-three-different-vitamin-k-antagonists-analysis-of-13-biopsy-proven-cases
#16
Léonard Golbin, Cécile Vigneau, Guy Touchard, Eric Thervet, Jean-Michel Halimi, Théophile Sawadogo, Nathan Lagoutte, Pascale Siohan, Elie Zagdoun, Alexandre Hertig, Nathalie Rioux-Leclercq, Thierry Frouget
Background: Acute kidney injury (AKI) with renal tubular obstruction by red blood cell casts (RBCC) has been described in patients treated with warfarin and is known as warfarin-related nephropathy (WRN). Methods: To determine whether other vitamin K antagonists (VKA) cause WRN, we retrospectively collected and analyzed the clinical and histological data of 13 patients treated with different VKA (seven with fluindione, four with warfarin and two with acenocoumarol) in seven French hospitals. Results: They all developed gross hematuria following overanticoagulation complicated by severe AKI (median serum creatinine concentration = 693 μmol/L)...
June 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28553032/stroke-in-patients-with-chronic-kidney-disease%C3%A2-how-do-we-approach-and-manage-it
#17
REVIEW
S Nayak-Rao, M P Shenoy
Renal failure is a potent risk factor for stroke, which is a leading cause of morbidity and mortality worldwide. The risk of stroke is 5-30 times higher in patients with chronic kidney disease (CKD), especially on dialysis. Case fatality rates are also higher reaching almost 90%. It is therefore important to understand the factors that predispose to stroke in this vulnerable population to better apply preventive strategies. The heightened risk of stroke in CKD represents the interplay of the vascular co-morbidities that occur with renal impairment and factors specific to renal failure such as malnutrition-inflammation-atherosclerosis complex, the effect of uremic toxins, dialysis techniques, vascular access, and the use of anticoagulants to maintain flow in the extracorporeal circuit...
May 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28545622/warfarin-and-the-risk-of-stroke-and-bleeding-in-patients-with-atrial-fibrillation-receiving-dialysis-a-systematic-review-and-meta-analysis
#18
REVIEW
Ziv Harel, Glenn M Chertow, Prakesh S Shah, Shai Harel, Paul Dorian, Andrew T Yan, Gustavo Saposnik, Manish M Sood, Amber O Molnar, Jeffrey Perl, Rachel M Wald, Sam Silver, Ron Wald
BACKGROUND: Patients with atrial fibrillation who receive dialysis are at a high risk of ischemic stroke. The role of warfarin in mitigating this risk in patients with atrial fibrillation who receive dialysis is uncertain. Our objective was to examine the safety and efficacy of warfarin in patients who have atrial fibrillation and receive dialysis. METHODS: We used MedLine, Embase, and the Cochrane Library to conduct a systematic review and meta-analysis of published and unpublished observational and interventional studies related to the use of warfarin in patients with atrial fibrillation who receive dialysis, and provided data on the risk of stroke and/or bleeding outcomes relative to placebo or no anticoagulation therapy...
June 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28502818/renal-function-considerations-for-stroke-prevention-in-atrial-fibrillation
#19
REVIEW
John Fanikos, Allison E Burnett, Charles E Mahan, Paul P Dobesh
Renal impairment increases risk of stroke and systemic embolic events and bleeding in patients with atrial fibrillation. Direct oral anticoagulants (DOACs) have varied dependence on renal elimination, magnifying the importance of appropriate patient selection, dosing, and periodic kidney function monitoring. In randomized controlled trials of nonvalvular atrial fibrillation, DOACs were at least as effective and associated with less bleeding compared with warfarin. Each direct oral anticoagulant was associated with reduced risk of stroke and systemic embolic events and major bleeding compared with warfarin in nonvalvular atrial fibrillation patients with mild or moderate renal impairment...
September 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28482261/nonvitamin-k-dependent-oral-anticoagulants-noacs-in-chronic-kidney-disease-patients-with-atrial-fibrillation
#20
REVIEW
L Di Lullo, C Ronco, M Cozzolino, D Russo, L Russo, B Di Iorio, A De Pascalis, V Barbera, M Galliani, E Vitaliano, C Campana, F Santoboni, A Bellasi
Atrial fibrillation (AF) represents the most common arrhythmia in patients with chronic kidney disease (CKD). As in the general population, in CKD patients AF is associated with an increased risk of thromboembolism and stroke. However, CKD patients, especially those on renal replacement therapy (RRT), also exhibit an increased risk of bleeding, especially from the gastrointestinal tract. Oral anticoagulation is the most effective form of thromboprophylaxis in patients with AF presenting increased risk of stroke...
July 2017: Thrombosis Research
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