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Lefevre F, Vial R, Grellier S, Bujon S, Bouchouareb D, Brunet P, Scarfoglière V, Robert T. Toward acid- and heparin-free dialysis: the regional anticoagulation approach. Clin Kidney J 2024; 17:sfae201. [PMID: 39104871 PMCID: PMC11299105 DOI: 10.1093/ckj/sfae201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Indexed: 08/07/2024] Open
Abstract
Background In chronic intermittent hemodialysis, heparin is the standard anticoagulant as is the use of acid-containing dialysate. Regional anticoagulation (RA) with a calcium-free, citrate-containing dialysate has been developed. We compared RA using a calcium-free, citrate-free dialysate, routinely used in our center, versus systemic heparinization. Methods In a retrospective, observational, single-center, crossover study, we examined 15 patients undergoing chronic hemodialysis who were at high risk of bleeding and temporarily unable to use heparin. These patients received temporary treatment with RA involving calcium-free and citrate-free dialysate. We compared the dialysis session success rates during two distinct periods: standard heparinization and RA procedure with a calcium-free and citrate-free dialysate. Results In our study of 15 patients on chronic hemodialysis which compared 30 RA sessions versus 28 heparin-based anticoagulation session, we observed a 100% success rate with a median session duration of 240 min in both RA and heparin groups. No early extracorporeal circulation (ECC) loss was reported. However, we noted significant differences in the post-dialysis ECC thrombosis scores, with higher Global Thrombosis Index (GTI) and higher membrane coagulation scores in the RA group (P < .007 and P < .02, respectively). No hypocalcaemia or hypercalcemia symptoms occurred. Median post-filter ionized calcium levels were 0.32 (0.29-0.39) mmol/L at 30 min and median patient ionized calcium levels was 1.19 (1.135-1.28) mmol/L at 60 min. No significant difference in per-dialysis arterial blood pressure was observed between groups. Conclusion Our study evaluated the RA approach using a calcium-free, citrate-free acetate dialysate in a chronic hemodialysis center and found it effective. Although an acid-free dialysate was not used in this study, our findings suggest it could be the next frontier in the evolution of advanced dialysis techniques.
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Affiliation(s)
- Flora Lefevre
- Centre of Nephrology and Renal Transplantation, Hôpital de la Conception, CHU de Marseille, Marseille, France
| | - Romain Vial
- Centre of Nephrology and Renal Transplantation, Hôpital de la Conception, CHU de Marseille, Marseille, France
| | - Sophie Grellier
- Centre of Nephrology and Hemodialysis, Hôpital Sainte Musse, Toulon, France
| | - Solène Bujon
- Centre of Nephrology and Renal Transplantation, Hôpital de la Conception, CHU de Marseille, Marseille, France
| | - Dammar Bouchouareb
- Centre of Nephrology and Renal Transplantation, Hôpital de la Conception, CHU de Marseille, Marseille, France
| | - Philippe Brunet
- Centre of Nephrology and Renal Transplantation, Hôpital de la Conception, CHU de Marseille, Marseille, France
| | | | - Thomas Robert
- Centre of Nephrology and Renal Transplantation, Hôpital de la Conception, CHU de Marseille, Marseille, France
- Aix Marseille Univ, INSERM, INRAE, C2VN, Marseille, France
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Janssens FV, Meijers B, François K. Avoiding Systemic Heparinization During Hemodialysis: How the Dialysis Setup Might Help. Semin Nephrol 2023; 43:151483. [PMID: 38220473 DOI: 10.1016/j.semnephrol.2023.151483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Heparin is the most widely used anticoagulant for maintaining patency of the extracorporeal blood circuit during intermittent hemodialysis. Inadvertently, this leads to systemic heparinization of the patient. Repeated intermittent heparinization during hemodialysis has been associated with increased bleeding risks and metabolic and immunologic effects. Alternative strategies for minimizing systemic anticoagulation encompass dilution methods, regional citrate anticoagulation, priming of the extracorporeal circuit, and modifications to dialyzer membranes and dialysate composition. The effectiveness of these alternatives in maintaining patency of the extracorporeal circuit varies substantially. Although most studies have focused on particular changes in the hemodialysis setup, several combined interventions for adapting the hemodialysis setup are now being studied. This narrative review aims to present an overview of the current landscape of hemodialysis setup strategies aimed at limiting or avoiding systemic anticoagulation during treatment. Additionally, this review intends to shed light on the underlying pathophysiological mechanisms that contribute to variations observed in reported outcomes.
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Affiliation(s)
- Florine V Janssens
- Department of Nephrology and Arterial Hypertension, Universitair Ziekenhuis Brussel (UZ Brussel), Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Björn Meijers
- Laboratory of Nephrology, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium; Nephrology Unit, University Hospitals Leuven, Leuven, Belgium
| | - Karlien François
- Department of Nephrology and Arterial Hypertension, Universitair Ziekenhuis Brussel (UZ Brussel), Vrije Universiteit Brussel (VUB), Brussels, Belgium.
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Santos A, Vega A, Davenport A. How to Ensure Patency of the Extracorporeal Circuit in Hemodialysis: Global Perspectives. Semin Nephrol 2023; 43:151476. [PMID: 38272778 DOI: 10.1016/j.semnephrol.2023.151476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
An adequate knowledge of anticoagulants used to prevent clotting in the extracorporeal circuit is crucial to provide optimal hemodialysis. Drugs can potentially prevent extracorporeal circuit clotting, but administration, half-life, and potential side effects differ. However, there is a lack of concise recommendations to guide anticoagulation and to avoid side effects. Because of the development of newer anticoagulant agents, direct thrombin inhibitors, and heparinoids, some of the side effects related to heparin may be overcome, but a deeper knowledge of these newer drugs is necessary. Moreover, types of heparin used, routes of administration, and health care economics vary around the world. We performed an extensive review of the literature, and the present article focuses on available anticoagulant drugs, exploring doses, side effects, particular use in hemodialysis, mechanism of action, pharmacokinetic properties, and use in special situations. Classical anticoagulants are still the standard of anticoagulation, but many questions remain unanswered; for example, is there real superiority of one treatment over another in terms of efficacy, safety, and health care economics? Anticoagulant protocols for hemodialysis need to be standardized and further studies performed to answer all of these questions.
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Affiliation(s)
- Alba Santos
- Nephrology Department, Hospital Universitario del Vinalopó, Elche, Spain.
| | - Almudena Vega
- Nephrology Department, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Andrew Davenport
- Department of Renal Medicine, Division of Medicine, University College London, London, UK
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Vanommeslaeghe F, Van Biesen W, François K. Detection and Scoring of Extracorporeal Circuit Clotting During Hemodialysis. Semin Nephrol 2023; 43:151474. [PMID: 38267348 DOI: 10.1016/j.semnephrol.2023.151474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Maintaining patency of the extracorporeal hemodialysis (HD) circuit is a prerequisite to perform HD. Unfractionated heparin and low-molecular-weight heparins are the most used anticoagulants in maintenance HD, but their administration comes with a major trade-off of bleeding complications. This narrative review article discusses technical factors impacting on HD circuit patency, such as tubings, dialyzer membranes, priming practices, and treatment settings. Strategies for monitoring extracorporeal circuit clotting during and after treatment are also reviewed, as these are essential tools for optimizing anticoagulation.
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Affiliation(s)
| | - Wim Van Biesen
- Department of Nephrology, Ghent University Hospital, Gent, Belgium
| | - Karlien François
- Department of Nephrology and Arterial Hypertension, Universitair Ziekenhuis Brussel (UZ Brussel), Vrije Universiteit Brussel (VUB), Brussels, Belgium
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5
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Chiasakul T, Mullier F, Lecompte T, Nguyen P, Cuker A. Laboratory Monitoring of Heparin Anticoagulation in Hemodialysis: Rationale and Strategies. Semin Nephrol 2023; 43:151477. [PMID: 38290962 DOI: 10.1016/j.semnephrol.2023.151477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Unfractionated heparin (UFH) and low-molecular-weight heparins (LMWHs) are commonly used to prevent clotting of the hemodialysis extracorporeal circuit and optimize hemodialysis adequacy. There is no consensus on the optimal dosing for UFH and LMWHs during hemodialysis. In clinical practice, semiquantitative clotting scoring of the dialyzer and venous chamber may help to guide UFH and LMWH dose adjustment. Laboratory monitoring has not been shown to improve clinical outcomes and is therefore not routinely indicated in most hemodialysis patients. It might, however, be considered in select patients, such as those with extremes of body weight or history of repeated clotting or bleeding. Methods for laboratory monitoring include the activated partial thromboplastin time, activated clotting time, and antifactor Xa assays for UFH and antifactor Xa assay for LMWHs. Target ranges for anticoagulation in hemodialysis have been suggested but not clearly defined. When utilizing these tests, issues such as availability, standardization, interfering factors, and interpretation must be considered. In this narrative review, we discuss the rationale and methods of monitoring anticoagulation in hemodialysis.
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Affiliation(s)
- Thita Chiasakul
- Center of Excellence in Translational Hematology, Division of Hematology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand.
| | - François Mullier
- Namur Thrombosis and Hemostasis Center, Université Catholique de Louvain, Centre Hospitalier Universitaire UCL Namur, Hematology Laboratory, Yvoir, Belgium; Institut de Recherche Expérimentale et Clinique, Pôle Mont, Université Catholique de Louvain, Yvoir, Belgium
| | - Thomas Lecompte
- Pharmacy Department, University of Namur, Namur, Belgium; Université de Lorraine, Nancy, France
| | - Philippe Nguyen
- Hematology Laboratory, Reims University Hospital, Reims, France
| | - Adam Cuker
- Department of Medicine and Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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De Troyer M, Wissing KM, De Clerck D, Cambier ML, Robberechts T, Tonnelier A, François K. Risk for excessive anticoagulation during hemodialysis is associated with type of vascular access and bedside coagulation testing: Results of a cross-sectional study. Front Med (Lausanne) 2022; 9:1009748. [PMID: 36590973 PMCID: PMC9794613 DOI: 10.3389/fmed.2022.1009748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 11/28/2022] [Indexed: 12/15/2022] Open
Abstract
Background Recommendations and practice patterns for heparin dosing during hemodialysis show substantial heterogeneity and are scantly supported by evidence. This study assessed the variability in unfractionated heparin (UFH) dosing during hemodialysis and its clinical and biological anticoagulatory effects, and identified explanatory factors of heparin dosing. Methods Cross-sectional study assessing UFH dosing, coagulation tests - activated partial thromboplastin time (aPTT) and activated clotting time (ACT) before dialysis start, 1 h after start and at treatment end (4 h) - and measurement of residual blood compartment volume of used dialyzers. Results 101 patients, 58% male, with a median dialysis vintage of 33 (6-71) months received hemodialysis using a total UFH dose of 9,306 ± 4,079 (range 3,000-23,050) IU/session. Use of a dialysis catheter (n = 56, 55%) was associated with a 1.4 times higher UFH dose (p < 0.001) irrespective of prior access function. aPTT increased significantly more than ACT both 1 h and 4 h after dialysis start, independent of the dialysis access used. 53% of patients with catheter access and ACT ratio < 1.5, 1 h after dialysis start had simultaneous aPTT ratios > 2.5. Similar findings were present at 1 h for patients with AVF/AVG and at dialysis end for catheter use. No clinically significant clotting of the extracorporeal circuit was noted during the studied sessions. Dialyzer's blood compartment volume was reduced with a median of 9% (6-20%) without significant effect of UFH dose, aPTT or ACT measurements and vascular access type. Conclusion UFH dose adaptations based on ACT measurements frequently result in excessive anticoagulation according to aPTT results. Higher doses of UFH are used in patients with hemodialysis catheters without evidence that this reduces dialyzer clotting.
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Tan J, Ning T, Zhang W, Qian Z, Jiang X, Sun L, Wu B. Heparin locks with low and high concentration in haemodialysis patients: A systematic review and meta-analysis. Int J Nurs Pract 2020; 27:e12907. [PMID: 33347670 DOI: 10.1111/ijn.12907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 11/29/2022]
Abstract
AIM There is no evidence-based consensus on the optimal concentration for heparin locks; several randomized controlled trials (RCTs) have evaluated the concentration of heparin locks, yet the results remain inconsistent. We aimed to assess heparin locks with low and high concentration in haemodialysis patients. METHODS We performed a systematic review and meta-analysis of RCTs focusing on the concentration in heparin locks. Studies were identified by searching PUBMED, EMBASE, Science Direct, Cochrane Central Register of Controlled Trials, China National Knowledge Infrastructure (CNKI) and Wanfang databases (from inception to 15 March 2020). Summary risk ratios or mean differences with 95% confidence interval were calculated. RESULTS A total of 370 patients with four RCTs were included. Heparin locks with 1000 U/ml could significantly reduce the activated partial thromboplastin time (APTT) compared with 5000 U/ml. No significant differences were seen in the occurrence of catheter-related thrombosis, the length of catheter stay, the rates of bleeding and catheter occlusions between the two groups. CONCLUSIONS Lower concentrations in heparin lock are optimal for shortening APTT in haemodialysis patients; further studies are needed to elucidate the role of heparin concentration in the lock practice.
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Affiliation(s)
- Jiajia Tan
- Department of Cardiology, Children's Hospital of Soochow, Suzhou, China
| | - Tingting Ning
- Department of General Surgery, Children's Hospital of Soochow University, Suzhou, China
| | - Wenting Zhang
- Department of General Surgery, Children's Hospital of Soochow University, Suzhou, China
| | - Zhuru Qian
- Department of General Surgery, Children's Hospital of Soochow University, Suzhou, China
| | - Xuqin Jiang
- Department of General Surgery, Children's Hospital of Soochow University, Suzhou, China
| | - Ling Sun
- Department of Cardiology, Children's Hospital of Soochow, Suzhou, China
| | - Bin Wu
- Department of General Surgery, Children's Hospital of Soochow University, Suzhou, China
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Claudel SE, Miles LA, Murea M. Anticoagulation in hemodialysis: A narrative review. Semin Dial 2020; 34:103-115. [PMID: 33135208 DOI: 10.1111/sdi.12932] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/28/2020] [Accepted: 10/11/2020] [Indexed: 12/18/2022]
Abstract
Systemic anticoagulation in maintenance hemodialysis (HD) has historically been considered necessary to maintain the extracorporeal circuit (ECC) and preserve dialysis efficiency. Unfractionated heparin (UFH) is the most commonly used anticoagulant due to low cost and staff familiarity. Despite widespread use, there is little standardization of heparin dosing protocols in the United States. Although the complication rates with UFH are low for the general population, certain contraindications have led to exploration in alternative anticoagulants in patients with end-stage kidney disease (ESKD). Here we review the current evidence regarding heparin dosing protocols, complications associated with heparin use, and discuss alternatives to UFH including anticoagulant-free routine HD.
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Affiliation(s)
- Sophie E Claudel
- Wake Forest School of Medicine, Winston-Salem, NC, USA.,Department of Internal Medicine, Boston Medical Center, Boston, MA, USA
| | - Lauren A Miles
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Mariana Murea
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, NC, USA
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Liang M, Wu Y, Su N, Liu Y, Lin W, Li S, Zhong W, Jiang Z. Prevalence, associated factors and cardiocerebral vascular prognosis of anaemia among patients on chronic haemodialysis in South Guangdong, China. J Int Med Res 2020; 48:300060520965791. [PMID: 33203278 PMCID: PMC7683930 DOI: 10.1177/0300060520965791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 09/21/2020] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE To assess the prevalence, associated factors and cardiocerebral vascular prognosis of anaemia in patients undergoing haemodialysis. METHODS This multicentre, retrospective, observational cohort study included patients on maintenance haemodialysis in South Guangdong, China. Anaemia in haemodialysis was defined as haemoglobin (Hb) <90 g/l. A proportion of patients were enrolled in a follow-up of the cardiocerebral vascular prognosis. RESULTS A total of 1161 patients were enrolled and 938 were followed-up for cardiocerebral vascular events. Of 1161 patients, 250 (21.5%) had anaemia and 524 (45.1%) had an Hb level of 100-120 g/l. Adjusted multivariate logistic regression analysis demonstrated that frequency of dialysis ≤ twice weekly, hypoalbuminaemia and use of unfractionated heparin were independent factors associated with anaemia. Kaplan-Meier survival curve analysis for no myocardial infarction was 100%, 100%, 100% and 100% after 3, 6, 9 and 12 months, respectively, in patients with Hb < 90 g/l; compared with 97%, 95%, 93% and 93%, respectively, in patients with Hb ≥ 130 g/l. Adjusted Cox proportional hazards regression demonstrated that Hb ≥ 130 g/l was an independent risk factor for myocardial infarction. CONCLUSION Anaemia is highly prevalent among patients undergoing haemodialysis in South Guangdong and requires careful management.
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Affiliation(s)
- Mengjun Liang
- Department of Nephrology, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Yong Wu
- Department of Nephrology, Huizhou Municipal Central Hospital, Huizhou, Guangdong Province, China
| | - Ning Su
- Department of Nephrology, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Ying Liu
- Department of Nephrology, Huizhou Municipal Central Hospital, Huizhou, Guangdong Province, China
| | - Weiping Lin
- Department of Nephrology, Huizhou Municipal Central Hospital, Huizhou, Guangdong Province, China
| | - Siyi Li
- Department of Nephrology, Huizhou Municipal Central Hospital, Huizhou, Guangdong Province, China
| | - Weiqiang Zhong
- Department of Nephrology, Huizhou Municipal Central Hospital, Huizhou, Guangdong Province, China
| | - Zongpei Jiang
- Department of Nephrology, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
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La CC, Takeuchi LE, Abbina S, Vappala S, Abbasi U, Kizhakkedathu JN. Targeting Biological Polyanions in Blood: Strategies toward the Design of Therapeutics. Biomacromolecules 2020; 21:2595-2621. [DOI: 10.1021/acs.biomac.0c00654] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Liu W, Zhang C, Bai Q, Zhang Z. Rare heparin induced thrombocytopenia type I reaction in a hemodialysis patient: Case report. Medicine (Baltimore) 2018; 97:e13609. [PMID: 30558037 PMCID: PMC6320049 DOI: 10.1097/md.0000000000013609] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
RATIONALE Heparin-induced thrombocytopenia (HIT) is a common antibody-mediated adverse reaction that occurs after heparin exposure. However, few case reports exist regarding nonantibody-mediated HIT. PATIENT CONCERNS AND DIAGNOSES An 81-year-old female diagnosed with rapidly progressive glomerulonephritis (RPGN) presented with atypical presentation of non antibody-meditated HIT after using heparin during hemodialysis. INTERVENTIONS AND OUTCOMES Patient was initiated on hemodialysis and presented with thrombocytopenia following administration of heparin during dialysis. After ruling out all other causes of thrombocytopenia, HIT was suspected to be the cause. Patient's 4Ts score was 6 points, and Naranjo adverse drug reaction probability scale was a score of 10. However, enzyme-linked immunoassay for platelet factor 4 (PF4)/heparin antibodies was negative, indicating non-antibody mediated HIT. Patient eventually continued hemodialysis without heparin. LESSONS This patient case presented a rare presentation of HIT type I reaction due to heparin and demonstrated the importance of timely recognition of thrombocytopenia, appropriate diagnosis and management, and possible existence of a new atypical or subtype of HIT reaction.
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Affiliation(s)
| | | | - Qiong Bai
- Department of Nephrology, Peking University Third Hospital, Beijing, China
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