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Regional Citrate Anticoagulation

Simon Hill, Elaine Creighton, Edward Walter
No abstract text is available yet for this article.
February 2018: Journal of the Intensive Care Society
Mira Küllmar, Alexander Zarbock
Acute kidney injury (AKI) is a common complication in critically ill patients and is associated with a worse short- and long-term outcome. The KDIGO (Kidney Disease: Improving Global Outcomes) guidelines suggest to implement preventive strategies in high-risk patients. Definition and classification of acute kidney injury according to the KDIGO criteria are based on an increase in serum creatinine and/or a decrease in urinary output. Renal replacement therapy (RRT) is the only supportive measure in patients with severe AKI...
February 2018: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
Martin Siebeck, Thomas Dimski, Timo Brandenburger, Torsten Slowinski, Detlef Kindgen-Milles
Continuous renal replacement therapy is a standard treatment in critically ill patients with acute kidney injury. All CRRT techniques provide a high low-molecular weight clearance but even with hemofiltration, clearance of middle molecules is low. We investigated whether a new super high-flux hemofilter provides effective and sustained middle molecule clearance during citrate-anticoagulated continuous venovenous hemodialysis for up to 72 h. We included 14 critically ill patients with AKI-KDIGO-III in a prospective observational trial...
February 8, 2018: Therapeutic Apheresis and Dialysis
Eng Kuang Lim, Ying-Ying T Seow, Shun E Chen, Gao Yang, Min Er Liaw, Shimi Isaac
BACKGROUND: For patients unable to receive heparin anticoagulation during haemodialysis, saline flushes to reduce circuit clotting are often the norm. Regional citrate anticoagulation (RCA) although effective is not used by many centres including in Singapore. We wanted to demonstrate the superiority and safety of a simple regional citrate anticoagulation regime, compared to saline flushes, for heparin-free low flux haemodialysis. METHODS: This is a prospective, open label, cross over study on 25 sequential haemodialysis sessions for inpatients receiving heparin-free haemodialysis...
January 19, 2018: BMC Nephrology
Jakob Gubensek, Jadranka Buturovic-Ponikvar
No abstract text is available yet for this article.
February 2018: Critical Care Medicine
Melanie Meersch, Alexander Zarbock
PURPOSE OF REVIEW: The increasing incidence of acute kidney injury has the immediate effect of a growing need for renal replacement therapy (RRT). Shedding light on the questions of who, when, why, and how RRT should be performed is difficult to accomplish because of ambiguous study results, poor quality evidence, and low standardization. RECENT FINDINGS: Critically ill patients are exposed to multiple factors known to deteriorate kidney function. Especially severe fluid overload is strongly associated with worse outcome and may be considered as a trigger for initiating RRT...
April 2018: Current Opinion in Anaesthesiology
Timo Brandenburger, Thomas Dimski, Torsten Slowinski, Detlef Kindgen-Milles
Today, up to 20% of all intensive care unit patients require renal replacement therapy (RRT), and continuous renal replacement therapies (CRRT) are the preferred technique. In CRRT, effective anticoagulation of the extracorporeal circuit is mandatory to prevent clotting of the circuit or filter and to maintain filter performance. At present, a variety of systemic and regional anticoagulation modes for CRRT are available. Worldwide, unfractionated heparin is the most widely used anticoagulant. All systemic techniques are associated with significant adverse effects...
September 2017: Best Practice & Research. Clinical Anaesthesiology
Matthias Klingele, Theresa Stadler, Danilo Fliser, Timo Speer, Heinrich V Groesdonk, Alexander Raddatz
BACKGROUND: As of 2009, anticoagulation with citrate was standard practice in continuous renal replacement therapy (CRRT) for critically ill patients at the University Medical Centre of Saarland, Germany. Partial hepatic metabolism of citrate means accumulation may occur during CRRT in critically ill patients with impaired liver function. The aim of this study was to evaluate the actual influence of hepatic function on citrate-associated complications during long-term CRRT. METHODS: In a retrospective study conducted between January 2009 and November 2012, all cases of dialysis therapy performed in the interdisciplinary surgical intensive care unit were analysed...
November 29, 2017: Critical Care: the Official Journal of the Critical Care Forum
B Tuerdi, L Zuo, H Sun, K Wang, Z Wang, G Li
The aim of this study was to discuss the safety and efficacy of regional citrate anticoagulation (RCA) on continuous blood purification (CBP) during the treatment of multiple organ dysfunction syndrome (MODS). Thirty-five patients with MODS were divided into two groups: the local citrate anticoagulation (RCA) group, and the heparin-free blood purification (hfBP) group. The MODS severity was assessed according to Marshall's MODS score criteria. Blood coagulation indicators, blood pressure, filter lifespan, filter replacement frequency, anticoagulation indicators, and main metabolic and electrolyte indicators were analyzed and compared between RCA and hfBP groups...
November 17, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
T Francey, A Schweighauser
BACKGROUND: The traditional systemic heparinization used for anticoagulation in extracorporeal therapies may cause fatal complications in animals at risk of bleeding. HYPOTHESIS/OBJECTIVES: To develop and validate a protocol of regional citrate anticoagulation (RCA) for intermittent hemodialysis in dogs. ANIMALS: A total of 172 dogs treated with hemodialysis for acute kidney injury. METHODS: In vitro titration was performed, adding trisodium citrate and calcium chloride to heparinized canine blood...
January 2018: Journal of Veterinary Internal Medicine
Antoine G Schneider, Didier Journois, Thomas Rimmelé
Regional citrate anticoagulation (RCA) is now recommended over systemic heparin for continuous renal replacement therapy in patients without contraindications. Its use is likely to increase throughout the world. However, in the absence of citrate blood level monitoring, the diagnosis of citrate accumulation, the most feared complication of RCA, remains relatively complex. It is therefore commonly mistaken with other conditions. This review aims at providing clarifications on RCA-associated acid-base disturbances and their management at the bedside...
November 19, 2017: Critical Care: the Official Journal of the Critical Care Forum
Tim Hendra, Jonathan Simon, Alastair Lowe
We present a case of a woman in her 70 s, on cyclophosphamide for multiple myeloma, who was admitted to critical care with grade III acute kidney injury. Renal replacement therapy with regional citrate anticoagulation was commenced. Shortly thereafter her systemic-ionised calcium levels fell and remained stubbornly low until post-filter calcium return was doubled. Her total-to-ionised calcium ratio gradually increased and so, to avoid further accumulation of citrate, anticoagulation was changed to heparin...
November 2017: Journal of the Intensive Care Society
Roberta Borg, Debra Ugboma, Dawn-Marie Walker, Richard Partridge
Following the implementation of citrate anticoagulation for continuous renal replacement therapy, we evaluate its first year of use and compare it to the previously used heparin, to assess whether our patients benefit from the recently reported advantages of citrate. We retrospectively analysed 2 years of data to compare the safety and efficacy of citrate versus heparin. The results have shown that 43 patients received continuous renal replacement therapy with heparin, 37 patients with citrate. We found no significant difference in metabolic control of pH, urea and creatinine after 72 h...
August 2017: Journal of the Intensive Care Society
Katie Sigler, Ji Lee, Poyyapakkam Srivaths
PURPOSE: The objective of this retrospective analysis was to present our single-center experience with intravenous (IV) calcium replacement and regional citrate anticoagulation in pediatric apheresis therapy with the aim of developing a standard operating procedure to minimize symptomatic hypocalcemia. METHODS: We analyzed apheresis procedures in patients <18 years of age over a 2-year time period (Jan 2012 to Dec 2014). Procedures in tandem with other extracorporeal therapies, including continuous renal replacement therapy, extracorporeal liver support, and extracorporeal membrane oxygenation, were excluded...
October 13, 2017: Journal of Clinical Apheresis
Samina R Chowdhury, Tom Lawton, Aaqid Akram, Robert Collin, James Beck
Continuous renal replacement therapy necessitates the use of anticoagulation. The anticoagulant of choice has traditionally been heparin. Emerging evidence has highlighted the deleterious effects of systemic heparin anticoagulation in the critically ill. Regional citrate anticoagulation has been used as an alternative in the setting of continuous renal replacement therapy. Our retrospective before-and-after cohort study aimed to ascertain if regional citrate anticoagulation is associated with any benefit in terms of circuit longevity, rates of complications, blood transfusion requirements and mortality, when introduced to a large general intensive care unit with a case mix of acute medical patients and acute and elective surgical patients...
February 2017: Journal of the Intensive Care Society
Richard Fisher, Katie Lei, Mike J Mitchell, Gary W Moore, Helen Dickie, Linda Tovey, Siobhan Crichton, Marlies Ostermann
BACKGROUND: Regional anticoagulation with citrate is the recommended first line treatment for patients receiving continuous renal replacement therapy (CRRT). There is wide variability in filter patency which may be due to differences in patient characteristics and local practice. It is also possible that citrate has effects on primary and secondary haemostasis, fibrinolysis and platelet function that are still unknown. The primary aim of the study is to describe the effect of citrate on coagulation and fibrinolysis pathways in both the patient and the haemodialysis circuit...
October 2, 2017: BMC Nephrology
Georg Franz Lehner, Ulrich Harler, Clemens Feistritzer, Viktoria Maria Haller, Julia Hasslacher, Romuald Bellmann, Michael Joannidis
BACKGROUND: Microvesicles (MV) are extracellular vesicles known to be associated with cellular activation and inflammation. Hemofiltration is an effective blood purification technique for patients with renal failure and possibly also eliminates inflammatory mediators in the setting of sepsis. On the other hand, proinflammatory stimuli are induced by blood contacting the artificial membrane during extracorporeal blood purification. In chronic dialysis patients a systemic increase in MV has been described...
September 4, 2017: Annals of Intensive Care
Maria Huguet, Lida Rodas, Miquel Blasco, Luis F Quintana, Jordi Mercadal, Jose T Ortiz-Pérez, Irene Rovira, Esteban Poch
BACKGROUND: Regional citrate anticoagulation (RCA) is being used increasingly in continuous renal replacement therapy (CRRT) as a safer alternative to heparin. However, complex metabolic control to avoid side effects have generated discrepancies about its introduction into everyday practice. We aimed to compare both anticoagulation techniques in terms of efficacy, safety and feasibility. METHODS: Observational retrospective study performed in 3 specialized ICUs in patients receiving CVVHDF with RCA between January 2013 and May 2016...
November 24, 2017: International Journal of Artificial Organs
Stanislas Faguer, Morgane Saint-Cricq, Marie-Béatrice Nogier, Isabelle Labadens, Laurence Lavayssiere, Nassim Kamar, Olivier Cointault
OBJECTIVES: Critically ill patients who have a high risk of bleeding but require prolonged intermittent dialysis need a heparin-free easy-to-use alternative type of anticoagulation within the dialysis circuit. We assessed the safety and efficiency of heparin-free regional citrate anticoagulation of the dialysis circuit using a calcium-free citrate-containing dialysate, with calcium reinjected according to ionic dialysance. DESIGN: Prospective cohort study. SETTING: Critical care units...
November 2017: Critical Care Medicine
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