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citrate anticoagulation,

Daniel J Sobczynski, Omolola Eniola-Adefeso
Plasma proteins rapidly coat the surfaces of particulate drug carriers to form a protein corona upon their injection into the bloodstream. The high presence of immunoglobulins in the corona formed on poly(lactic-co-glycolic acid) (PLGA) vascular-targeted carrier (VTC) surfaces was recently shown to negatively impact their adhesion to activated endothelial cells (aECs) in vitro. Here, we characterized the influence of anticoagulants, or their absence, on the binding efficiency of VTCs of various materials via modulation of their protein corona...
October 17, 2016: Acta Biomaterialia
Núria Segarra, Joan Huguet, Beatriz Fernández-Forner
The objective is to evaluate Grifols' DG-PT L Rec liquid reagent for prothrombin time (PT) determination in comparison to the laboratory's reference reagent (Siemens' Thromborel S). For linearity, the average master curve for PT and five nominal prothrombin concentrations was obtained from five calibration curves. Within-assay precision (repeatability) was calculated after measuring 20 successive tests of normal and pathological controls. For correlation, 581 routine clinical citrated plasma samples were assessed with both reagents...
October 13, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
Jun-Hui Choi, Seung Kim
Thrombosis is a leading cause of morbidity and mortality throughout the world. Thrombolytic agents are important for both the prevention and treatment of thrombosis. Fibrin clot and turbidity assays revealed that it was able to inhibit the formation of fibrin clot. Chlorogenic acid degraded blood clot and inhibited the enzymatic activity of procoagulant proteases, thrombin, activated factor X (FXa), and activated factor XIII (FXIIIa). Chlorogenic acid was found to delay activated partial thromboplastin time, prothrombin time, and thrombin time...
October 5, 2016: Journal of Biochemical and Molecular Toxicology
Doris Handschel, Michiel Etienne Janssens, Marion Gericke, Stef De Reys, Helmut Borberg
BACKGROUND: As COBE Spectra has been replaced in many parts of the world, we describe a new protocol for low-density lipoprotein (LDL)-apheresis performed on familial hypercholesterolemia patients for the Spectra Optia platform. METHODS: For all procedures, after administering a bolus of heparin of 2,500 U, 10,000 U of heparin added to a 600 ml ACD-A bag was used as anticoagulant (AC). In a first phase (A), 16 apheresis procedures with COBE Spectra using an inlet:AC ratio of 25:1 were compared to 18 LDL-apheresis treatments with Spectra Optia at split Inlet:AC ratios of 16:1/18:1 or 20:1/25:1...
September 27, 2016: Journal of Clinical Apheresis
Marcus V S João Luiz, Cristoforo Scavone, Carmen Tzanno
Introduction Poor blood flow rate (PF) is highly prevalent among CKD 5D patients with long-term central venous catheters. Heparin catheter lock solutions are commonly used to maintain catheter patency, however the incidence of PF remains high. The purpose of the CLOCK Trial was to evaluate two catheter lock solutions on reduction of PF incidence. Methods Seventy-five CKD 5D patients on high-efficiency hemodialysis at the Integrated Centre of Nephrology (Guarulhos, Brazil) were randomized 1:1:1 to receive a lock solution combining minocycline 3 mg/mL with the anticoagulant/chelation agent EDTA 30 mg/mL (M-EDTA) or heparin 1000 IU/mL (H) or trisodium citrate 30% (TSC) vs...
September 26, 2016: Hemodialysis International
Anna Sidoti, Etrusca Brogi, Joshua Morse, Michele Collareta, Luigi Vetrugno, Francesco Giunta, Francesco Forfori
Direct hemoperfusion with polymyxin B (PMX-DHP) is an extracorporeal treatment to add to conventional therapy during unresponsive endotoxic septic shock. So far, only heparin has been used as an anticoagulant during polymyxin B therapy. We present a case report of a postsurgical septic patient treated with 2 cycles of PMX-DHP using citrate anticoagulation. Monitoring of serum calcium, postcartridge calcium, and acid-base balance was performed. The treatments were accomplished without complications. To our knowledge, this is the first published report on the use of citrate anticoagulation during PMX-DHP...
September 23, 2016: A & A Case Reports
Daisuke Sakota, Tatsuki Fujiwara, Katsuhiro Ouchi, Katsuyuki Kuwana, Hiroyuki Yamazaki, Osamu Maruyama
Continuous optical monitoring of thrombus formation in extracorporeal mechanical circulatory support (EMCS) devices will contribute to safe, long-term EMCS. A clinically applicable optical detector must be able to distinguish among the optical characteristics of oxygen saturation (SaO2 ), hematocrit (Hct), and thrombus formation. In vitro studies of spectral changes at wavelengths from 400 to 900 nm associated with SaO2 , Hct, and thrombus formed around the top pivot bearing of a Gyro C1E3 pump were conducted...
September 2016: Artificial Organs
Sarah R Pigmon, Kara D Weatherman, Nicholas Brehl, Cybil J Nielsen
: The purpose of this research is to evaluate the necessity of using heparin in UltraTag™ RBC kits used for nuclear medicine studies. METHODS: Non-heparinized blood (n = 15) and heparinized blood (n = 15) were added into UltraTag™ RBC kits. The samples were evaluated for macroscopic blood clots and microscopic platelet clumping. Control groups with heparin (n = 15) and control groups without heparin (n = 15) were used to help evaluate the effectiveness of the anticoagulant properties within the UltraTag™ RBC kits (sodium citrate) and to evaluate if that played a role in preventing blood clots/clumps...
September 15, 2016: Journal of Nuclear Medicine Technology
E Bousie, D van Blokland, H J W Lammers, A R H van Zanten
BACKGROUND/OBJECTIVES: Overfeeding in critically ill patients is associated with many complications. Propofol, dextrose infusion and citrate dialysis provide non-nutritional calories (NNCs), potentially causing overfeeding. The relevance of NNCs for total caloric intake has not been systematically studied. SUBJECTS/METHODS: We retrospectively studied adult mechanically ventilated intensive care unit (ICU) patients receiving enteral nutrition with or without supplemental parenteral nutrition...
September 14, 2016: European Journal of Clinical Nutrition
Charlotte Trumper
Continuous renal replacement therapy (CRRT) is widely used in the management of critically ill patients with acute kidney injury. It requires effective anticoagulation of the extracorporeal blood circuit. Although heparin is the most commonly prescribed anticoagulant, there are issues associated with heparin, and there has been increasing interest in regional citrate anticoagulation as an alternative. In 2013, The Leeds Teaching Hospitals NHS Trust switched from heparin to citrate anticoagulant for CRRT in intensive care units (ICUs) across the Trust...
September 8, 2016: British Journal of Nursing: BJN
Olaf Stanger, Brigitta Gahl, Michael Grabherr, Richard Krausler, Sarah Longnus, Andreas Meinitzer, Janne Cadamuro
BACKGROUND: Use of the Freedom SOLO (FS) stentless aortic bioprosthesis is limited by a unique and as yet unexplained severe decrease in postoperative platelet count in the absence of FS-related excess bleeding or thromboembolism. We investigated whether anticoagulant-associated pseudothrombocytopaenia could explain this complication. METHODS: Thirty consecutive patients (mean age 75.4±7.7 years, 11 [36.7%] female) underwent elective aortic valve replacement (AVR) with either the stented bovine Mitroflow (MF, n=18) or the stentless bovine FS (n=12) aortic valve bioprostheses...
August 16, 2016: Heart, Lung & Circulation
Timothy E Bunchman
No abstract text is available yet for this article.
September 2016: Pediatric Critical Care Medicine
Rita Jacobs, Patrick M Honore, Marc Diltoer, Herbert D Spapen
BACKGROUND: Citrate, the currently preferred anticoagulant for continuous veno-venous hemofiltration (CVVH), may influence acid-base equilibrium. METHODS: The effect of 2 different citrate solutions on acid-base status was assessed according to the Stewart-Figge approach in two consecutive cohorts of critically ill adult patients. The first group received Prismocitrate 10/2 (PC10/2; 10 mmol citrate/L). The next group was treated with Prismocitrate 18/0 (PC18; 18 mmol citrate/L)...
2016: BMC Nephrology
Andrew L Frelinger, Anja J Gerrits, Allen L Garner, Andrew S Torres, Antonio Caiafa, Christine A Morton, Michelle A Berny-Lang, Sabrina L Carmichael, V Bogdan Neculaes, Alan D Michelson
BACKGROUND: Activated autologous platelet-rich plasma (PRP) used in therapeutic wound healing applications is poorly characterized and standardized. Using pulsed electric fields (PEF) to activate platelets may reduce variability and eliminate complications associated with the use of bovine thrombin. We previously reported that exposing PRP to sub-microsecond duration, high electric field (SMHEF) pulses generates a greater number of platelet-derived microparticles, increased expression of prothrombotic platelet surfaces, and differential release of growth factors compared to thrombin...
2016: PloS One
Rita Jacobs, Patrick M Honore, Inne Hendrickx, Herbert D Spapen
No abstract text is available yet for this article.
2016: Blood Purification
P K C Janssen, N A Foudraine, D M T Burgers, C Neef, J L M L le Noble
INTRODUCTION: Cefuroxime is frequently prescribed as an antimicrobial therapy in critically ill patients. The aim of this study was to develop a new intravenous dosing strategy for cefuroxime in critically ill patients undergoing continuous venovenous hemofiltration with regional citrate anticoagulation (RCA-CVVH) by analyzing its extracorporeal removal and pharmacokinetic (PK) parameters. METHODS: Nine critically ill patients treated with intravenous cefuroxime and RCA-CVVH and a phosphate-containing replacement fluid were investigated...
August 4, 2016: Therapeutic Drug Monitoring
Asya Makhro, Rick Huisjes, Liesbeth P Verhagen, María Del Mar Mañú-Pereira, Esther Llaudet-Planas, Polina Petkova-Kirova, Jue Wang, Hermann Eichler, Anna Bogdanova, Richard van Wijk, Joan-Lluís Vives-Corrons, Lars Kaestner
Transportation of blood samples is unavoidable for assessment of specific parameters in blood of patients with rare anemias, blood doping testing, or for research purposes. Despite the awareness that shipment may substantially alter multiple parameters, no study of that extent has been performed to assess these changes and optimize shipment conditions to reduce transportation-related artifacts. Here we investigate the changes in multiple parameters in blood of healthy donors over 72 h of simulated shipment conditions...
2016: Frontiers in Physiology
Hanne Berg Ravn, Jo Bnding Andreasen, Anne-Mette Hvas
Developmental haemostasis has been well documented over the last 3 decades and age-dependent reference ranges have been reported for a number of plasmatic coagulation parameters. With the increasing use of whole blood point-of-care tests like rotational thromboelastometry (ROTEM) and platelet function tests, an evaluation of age-dependent changes is warranted for these tests as well. We obtained blood samples from 149 children, aged 1 day to 5.9 years, and analysed conventional plasmatic coagulation tests, including activated partial prothrombin time, prothrombin time, and fibrinogen (functional)...
July 27, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
Paul D'Orazio, Helen Visnick, Shankar Balasubramanian
BACKGROUND: Variable ionized calcium measurements in post filter blood samples during continuous renal replacement therapy (renal dialysis) using regional citrate anticoagulation (RCA) have been reported using commercial blood gas analyzers, resulting in analyzer-dependent differences in decisions regarding adjustment of citrate dose. METHODS: We evaluated accuracy for measurement of iCa at low concentrations by 4 commercial blood gas analyzers using primary reference solutions formulated down to 0...
October 1, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
Andreia Ribeiro, Thomas Ritter, Matthew Griffin, Rhodri Ceredig
Human bone marrow-derived mesenchymal stromal/stem cells (MSC) have well-documented modulatory effects on multiple immune cell types. Although these effects are linked to their therapeutic benefit in diverse diseases, a reliable, quantitative assay of the immunomodulatory potency of individual human MSC preparations is lacking. The aims of this study were to develop an optimised rapid turnaround, flow cytometry-based whole-blood assay to monitor MSC potency and to validate its application to MSC immunomodulation...
September 2016: Immunology Letters
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