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Mansour A, Berahou M, Odot J, Pontis A, Parasido A, Reizine F, Launey Y, Garlantézec R, Flecher E, Lecompte T, Nesseler N, Gouin-Thibault I. Antithrombin Levels and Heparin Responsiveness during Venoarterial Extracorporeal Membrane Oxygenation: A Prospective Single-center Cohort Study. Anesthesiology 2024; 140:1153-1164. [PMID: 38271619 PMCID: PMC11097948 DOI: 10.1097/aln.0000000000004920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 01/17/2024] [Indexed: 01/27/2024]
Abstract
BACKGROUND Unfractionated heparin, administered during venoarterial extracorporeal membrane oxygenation to prevent thromboembolic events, largely depends on plasma antithrombin for its antithrombotic effects. Decreased heparin responsiveness seems frequent on extracorporeal membrane oxygenation; however, its association with acquired antithrombin deficiency is poorly understood. The objective of this study was to describe longitudinal changes in plasma antithrombin levels during extracorporeal membrane oxygenation support and evaluate the association between antithrombin levels and heparin responsiveness. The hypothesis was that extracorporeal membrane oxygenation support would be associated with acquired antithrombin deficiency and related decreased heparin responsiveness. METHODS Adults receiving venoarterial extracorporeal membrane oxygenation were prospectively included. All patients received continuous intravenous unfractionated heparin using a standardized protocol (target anti-Xa 0.3 to 0.5 IU/ml). For each patient, arterial blood was withdrawn into citrate-containing tubes at 11 time points (from hour 0 up to day 7). Anti-Xa (without dextran or antithrombin added) and antithrombin levels were measured. The primary outcome was the antithrombin plasma level. In the absence of consensus, antithrombin deficiency was defined as a time-weighted average of antithrombin less than or equal to 70%. Data regarding clinical management and heparin dosage were collected. RESULTS Fifty patients, including 42% postcardiotomy, were included between April 2020 and May 2021, with a total of 447 samples. Median extracorporeal membrane oxygenation duration was 7 (interquartile range, 4 to 12) days. Median antithrombin level was 48% (37 to 60%) at baseline. Antithrombin levels significantly increased throughout the follow-up. Time-weighted average of antithrombin levels was 63% (57 to 73%) and was less than or equal to 70% in 32 (64%) of patients. Overall, 45 (90%) patients had at least one antithrombin value less than 70%, and 35 (70%) had at least one antithrombin value less than 50%. Antithrombin levels were not significantly associated with heparin responsiveness evaluated by anti-Xa assay or heparin dosage. CONCLUSIONS Venoarterial extracorporeal membrane oxygenation support was associated with a moderate acquired antithrombin deficiency, mainly during the first 72 h, that did not correlate with heparin responsiveness. EDITOR’S PERSPECTIVE
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Affiliation(s)
- Alexandre Mansour
- Department of Anesthesia and Critical Care, Pontchaillou, University Hospital of Rennes, Rennes, France; University of Rennes, National Institute of Health and Medical Research, Center of Clinical Investigation, Research Institute for Environmental and Occupational Health, University Hospital Federation Survival Optimization in Organ Transplantation, Univ Rennes, Rennes, France
| | - Mathilde Berahou
- Department of Anesthesia and Critical Care, Pontchaillou, University Hospital of Rennes, Rennes, France
| | - Joscelyn Odot
- Department of Anesthesia and Critical Care, Pontchaillou, University Hospital of Rennes, Rennes, France
| | - Adeline Pontis
- Department of Hematology, Pontchaillou, University Hospital of Rennes, Rennes, France; University of Rennes, National Institute of Health and Medical Research, Center of Clinical Investigation, Research Institute for Environmental and Occupational Health, University Hospital Federation Survival Optimization in Organ Transplantation, Univ Rennes, Rennes, France
| | - Alessandro Parasido
- Department of Thoracic and Cardiovascular Surgery, Pontchaillou, University Hospital of Rennes, Rennes, France
| | - Florian Reizine
- Department of Medical Intensive Care, University Hospital of Rennes, Rennes, France
| | - Yoann Launey
- Department of Anesthesia and Critical Care, Pontchaillou, University Hospital of Rennes, Rennes, France
| | - Ronan Garlantézec
- Department of Epidemiology and Public Health, Pontchaillou, University Hospital of Rennes, Rennes, France; University of Rennes, National Institute of Health and Medical Research, Center of Clinical Investigation, Research Institute for Environmental and Occupational Health, University Hospital Federation Survival Optimization in Organ Transplantation, Univ Rennes, Rennes, France
| | - Erwan Flecher
- Department of Thoracic and Cardiovascular Surgery, Pontchaillou, University Hospital of Rennes, University of Rennes, Signal and Image Treatment Laboratory, National Institute of Health and Medical Research U1099, Rennes, France
| | - Thomas Lecompte
- Department of Hematology, Pontchaillou, University Hospital of Rennes, Rennes, France
| | - Nicolas Nesseler
- Department of Anesthesia and Critical Care, Pontchaillou, University Hospital of Rennes, Rennes, France; University of Rennes, National Institute of Health and Medical Research, Center of Clinical Investigation, Nutrition, Metabolism, Cancer Mixed Research Unit, University Hospital Federation Survival Optimization in Organ Transplantation, Univ Rennes, Rennes, France
| | - Isabelle Gouin-Thibault
- Department of Hematology, Pontchaillou, University Hospital of Rennes, Rennes, France; University of Rennes, National Institute of Health and Medical Research, Research Institute for Environmental and Occupational Health, Rennes, France
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Ranucci M, Baryshnikova E, Pistuddi V, Di Dedda U. The Rise and Fall of Antithrombin Supplementation in Cardiac Surgery. Anesth Analg 2022; 136:1043-1051. [PMID: 36853953 DOI: 10.1213/ane.0000000000006314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Various cohort studies, both retrospective and prospective, showed that low antithrombin levels after cardiac surgery (at the arrival in the intensive care unit and during the next days) were associated with a number of adverse outcomes, including surgical reexploration and thromboembolic events, eventually leading to prolonged stay in the intensive care. Values lower than 58% to 64% of antithrombin activity were indicative of this higher morbidity with good sensitivity and specificity. The scenario generated the hypothesis that low antithrombin levels needed to be corrected by supplementation to improve postoperative outcome. However, randomized controlled studies run to test this idea failed to demonstrate any benefit of antithrombin supplementation, showing no effects on outcome, neither as preemptive preoperative strategy nor for treating postoperative low antithrombin values. In addition, randomized trials highlighted that those patients who received antithrombin experienced significantly higher incidence of acute kidney injury with a pooled odds ratio of 4.41 (95% CI, 1.90-10.23; P = .001). A strongly decreased thrombin activity after antithrombin correction may eventually affect the efficiency of the glomerular filtration and cause the deterioration of kidney function, but underlying biological mechanisms remain unclear. In conclusion, low levels of antithrombin activity after cardiac surgery should be considered as a marker of greater severity of the patient's conditions and/or of the complexity of the surgical procedure. There are no indications for antithrombin supplementation in cardiac surgery unless for correcting heparin resistance.
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Affiliation(s)
- Marco Ranucci
- From the Department of Cardiothoracic and Vascular Anesthesia and Intensive Care, IRCCS Policlinico San Donato, Milan, Italy
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Moront MG, Woodward MK, Essandoh MK, Avery EG, Reece TB, Brzezinski M, Spiess B, Shore-Lesserson L, Chen J, Henriquez W, Barceló M, Despotis G, Karkouti K, Levy JH, Ranucci M, Mondou E. A Multicenter, Randomized, Double-Blind, Placebo-Controlled Trial of Preoperative Antithrombin Supplementation in Patients at Risk for Antithrombin Deficiency After Cardiac Surgery. Anesth Analg 2022; 135:757-768. [PMID: 35877927 DOI: 10.1213/ane.0000000000006145] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Antithrombin (AT) activity is reduced during cardiac operations with cardiopulmonary bypass (CPB), which is associated with adverse outcomes. Preoperative AT supplementation, to achieve >58% and <100% AT activity, may potentially reduce postoperative morbidity and mortality in cardiac operations with CPB. This prospective, multicenter, randomized, double-blind, placebo-controlled study was designed to evaluate the safety and efficacy of preoperative treatment with AT supplementation in patients at risk for low AT activity after undergoing cardiac surgery with CPB. METHODS A total of 425 adult patients were randomized (1:1) to receive either a single dose of AT (n = 213) to achieve an absolute increase of 20% above pretreatment AT activity or placebo (n = 212) before surgery. The study duration was approximately 7 weeks. The primary efficacy end point was the percentage of patients with any component of a major morbidity composite (postoperative mortality, stroke, acute kidney injury [AKI], surgical reexploration, arterial or venous thromboembolic events, prolonged mechanical ventilation, and infection) in the 2 groups. Secondary end points included AT activity, blood loss, transfusion requirements, duration of intensive care unit (ICU), and hospital stays. Safety was also assessed. RESULTS Overall, 399 patients (men, n = 300, 75.2%) with a mean (standard deviation [SD]) age of 66.1 (11.7) years, with the majority undergoing complex surgical procedures (n = 266, 67.9%), were analyzed. No differences in the percentage of patients experiencing morbidity composite outcomes between groups were observed (AT-treated 68/198 [34.3%] versus placebo 58/194 [29.9%]; P = .332; relative risk, 1.15). After AT infusion, AT activity was significantly higher in the AT group (108% [42-143]) versus placebo group (76% [40-110]), and lasted up to postoperative day 2. At ICU, the frequency of patients with AT activity ≥58% in the AT group (81.5%) was significantly higher (P < .001) versus placebo group (43.2%). Secondary end point analysis did not show any advantage of AT over placebo group. There were significantly more patients with AKI (P < .001) in the AT group (23/198; 11.6%) than in the placebo group (5/194, 2.6%). Safety results showed no differences in treatment-emergent adverse events nor bleeding events between groups. CONCLUSIONS AT supplementation did not attenuate adverse postoperative outcomes in our cohort of patients undergoing cardiac surgery with CPB.
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Affiliation(s)
- Michael George Moront
- From the, Department of Cardiothoracic Sugery, Promedical Toledo Hospital, Toledo, Ohio
| | | | - Michael K Essandoh
- Department of Anesthesiology' Wexner Medical Center, The Ohio State University, Columbus, Ohio
| | - Edwin G Avery
- Department of Anesthesiology and Perioperative Medicine, University Hospital Case Medical Center, Cleveland, Ohio
| | - T Brett Reece
- Department of Surgery' Division of Cardiothoracic Surgery, University of Colorado, Aurora, Colorado
| | - Marek Brzezinski
- Department of Anesthesiology and Perioperative Care, University of California, San Francisco, California.,San Francisco Veterans Affairs Health Care System, San Francisco, California
| | - Bruce Spiess
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | | | - Junliang Chen
- Bioscience Research Group, Grifols, Barcelona, Spain
| | | | | | - George Despotis
- Departments of Pathology, Immunology and Anesthesiology, Washington University School of Medicine, St. Louis, Missouri
| | - Keyvan Karkouti
- Department of Anesthesia and Pain Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Jerrold H Levy
- Department of Anesthesiology and Critical Care, Duke University School of Medicine, Durham, North Carolina
| | - Marco Ranucci
- Department of Cardiothoracic and Vascular Anesthesia and Intensive Care, IRCSS Policlinico San Donato, Milan, Italy
| | - Elsa Mondou
- Bioscience Research Group, Grifols, Barcelona, Spain
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Stammers AH, Francis SG, Miller R, Nostro A, Tesdahl EA, Mongero LB. Application of goal-directed therapy for the use of concentrated antithrombin for heparin resistance during cardiac surgery. Perfusion 2020; 36:171-182. [PMID: 32536326 DOI: 10.1177/0267659120926089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The maintenance of anticoagulation in adult patients undergoing cardiopulmonary bypass is dependent upon a number of factors, including heparin concentration and adequate antithrombin activity. Inadequate anticoagulation increases the risk of thrombosis and jeopardizes both vascular and extracorporeal circuit integrity. The purpose of this study was to evaluate a goal-directed approach for the use of antithrombin in patients who were resistant to heparin. Following institutional review board approval, data were obtained from quality improvement records. A goal-directed protocol for antithrombin was established based upon heparin dosing (400 IU kg-1 body weight) and achieving an activated clotting time of ⩾500 seconds prior to cardiopulmonary bypass. Two groups of patients were identified as those receiving antithrombin and those not receiving antithrombin. Outcome measures included activated clotting time values and transfusion rates. Consecutive patients (n = 140) were included in the study with 10 (7.1%) in the antithrombin group. The average antithrombin dose was 1,029.0 ± 164.5 IU and all patients had restoration to the activated clotting time levels. Patients in the antithrombin group were on preoperative heparin therapy (80.0% vs. 24.6%, p = 0.001). Prior to cardiopulmonary bypass the activated clotting time values were lower in the antithrombin group (417.7 ± 56.1 seconds vs. 581.1 ± 169.8 seconds, p = 0.003). Antithrombin patients had a lower heparin sensitivity index (0.55 ± 0.17 vs. 1.05 ± 0.44 seconds heparin-1 IU kg-1, p = 0.001), received more total heparin (961.3 ± 158.5 IU kg-1 vs. 677.5 ± 199.0 IU kg-1, p = 0.001), more cardiopulmonary bypass heparin (22,500 ± 10,300 IU vs. 12,100 ± 13,200 IU, p = 0.016), and more protamine (5.4 ± 1.2 vs. 4.1 ± 1.1 mg kg-1, p = 0.003). The intraoperative transfusion rate was higher in the antithrombin group (70.0% vs. 35.4%, p = 0.035), but no differences were seen postoperatively. Utilization of a goal-directed algorithm for the administration of antithrombin for the treatment of heparin resistance is effective in patients undergoing cardiac surgery.
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Affiliation(s)
| | | | | | - Anthony Nostro
- Department of Anesthesia, Pocono Medical Center, East Stroudsburg, PA, USA
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Downey L, Faraoni D. Antithrombin Supplementation in Infants Undergoing Cardiac Surgery: A New Piece of a Complex Puzzle. J Cardiothorac Vasc Anesth 2019; 33:403-405. [DOI: 10.1053/j.jvca.2018.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Indexed: 11/11/2022]
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Jooste EH, Scholl R, Wu YH, Jaquiss RDB, Lodge AJ, Ames WA, Homi HM, Machovec KA, Greene NH, Donahue BS, Shah N, Benkwitz C. Double-Blind, Randomized, Placebo-Controlled Trial Comparing the Effects of Antithrombin Versus Placebo on the Coagulation System in Infants with Low Antithrombin Undergoing Congenital Cardiac Surgery. J Cardiothorac Vasc Anesth 2018; 33:396-402. [PMID: 30072263 DOI: 10.1053/j.jvca.2018.05.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Indexed: 01/19/2023]
Abstract
OBJECTIVES To determine whether precardiopulmonary bypass (CPB) normalization of antithrombin levels in infants to 100% improves heparin sensitivity and anticoagulation during CPB and has beneficial effects into the postoperative period. DESIGN Randomized, double-blinded, placebo-controlled prospective study. SETTING Multicenter study performed in 2 academic hospitals. PARTICIPANTS The study comprised 40 infants younger than 7 months with preoperative antithrombin levels <70% undergoing CPB surgery. INTERVENTIONS Antithrombin levels were increased with exogenous antithrombin to 100% functional level intraoperatively before surgical incision. MEASUREMENTS AND MAIN RESULTS Demographics, clinical variables, and blood samples were collected up to postoperative day 4. Higher first post-heparin activated clotting times (sec) were observed in the antithrombin group despite similar initial heparin dosing. There was an increase in heparin sensitivity in the antithrombin group. There was significantly lower 24-hour chest tube output (mL/kg) in the antithrombin group and lower overall blood product unit exposures in the antithrombin group as a whole. Functional antithrombin levels (%) were significantly higher in the treatment group versus placebo group until postoperative day 2. D-dimer was significantly lower in the antithrombin group than in the placebo group on postoperative day 4. CONCLUSION Supplementation of antithrombin in infants with low antithrombin levels improves heparin sensitivity and anticoagulation during CPB without increased rates of bleeding or adverse events. Beneficial effects may be seen into the postoperative period, reflected by significantly less postoperative bleeding and exposure to blood products and reduced generation of D-dimers.
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Affiliation(s)
- Edmund H Jooste
- Pediatric Anesthesiology, Department of Anesthesiology, Duke University Medical Center, Durham, NC.
| | - Rebecca Scholl
- Pediatric Anesthesiology, Department of Anesthesiology, Duke University Medical Center, Durham, NC
| | - Yi-Hung Wu
- Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, NC
| | - Robert D B Jaquiss
- Department of Cardiovascular and Thoracic Surgery, UT Southwestern Medical Center and Children's Medical Center, Dallas, TX
| | - Andrew J Lodge
- Division of Congenital Cardiac Surgery, Department of Cardiothoracic Surgery, Duke University Medical Center, Durham
| | - Warwick A Ames
- Pediatric Anesthesiology, Department of Anesthesiology, Duke University Medical Center, Durham, NC
| | - H Mayumi Homi
- Pediatric Anesthesiology, Department of Anesthesiology, Duke University Medical Center, Durham, NC
| | - Kelly A Machovec
- Pediatric Anesthesiology, Department of Anesthesiology, Duke University Medical Center, Durham, NC
| | - Nathaniel H Greene
- Pediatric Anesthesiology, Department of Anesthesiology, Duke University Medical Center, Durham, NC
| | - Brian S Donahue
- Division of Pediatric Cardiac Anesthesiology, Monroe Carell Jr Children's Hospital, Vanderbilt University Medical Center, Nashville, TN
| | - Nirmish Shah
- Division of Pediatric Hematology/Oncology, Duke University Medical Center, Durham, NC
| | - Claudia Benkwitz
- Department of Anesthesia and Perioperative Care, UCSF Benioff Children's Hospital, San Francisco, CA
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Abstract
BACKGROUND Critical illness is associated with uncontrolled inflammation and vascular damage which can result in multiple organ failure and death. Antithrombin III (AT III) is an anticoagulant with anti-inflammatory properties but the efficacy and any harmful effects of AT III supplementation in critically ill patients are unknown. This review was published in 2008 and updated in 2015. OBJECTIVES To examine:1. The effect of AT III on mortality in critically ill participants.2. The benefits and harms of AT III.We investigated complications specific and not specific to the trial intervention, bleeding events, the effect on sepsis and disseminated intravascular coagulation (DIC) and the length of stay in the intensive care unit (ICU) and in hospital in general. SEARCH METHODS We searched the following databases from inception to 27 August 2015: Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE (Ovid SP), EMBASE (Ovid SP,), CAB, BIOSIS and CINAHL. We contacted the main authors of trials to ask for any missed, unreported or ongoing trials. SELECTION CRITERIA We included randomized controlled trials (RCTs) irrespective of publication status, date of publication, blinding status, outcomes published, or language. We contacted the investigators and the trial authors in order to retrieve missing data. In this updated review we include trials only published as abstracts. DATA COLLECTION AND ANALYSIS Our primary outcome measure was mortality. Two authors each independently abstracted data and resolved any disagreements by discussion. We presented pooled estimates of the intervention effects on dichotomous outcomes as risk ratios (RR) with 95% confidence intervals (CI). We performed subgroup analyses to assess risk of bias, the effect of AT III in different populations (sepsis, trauma, obstetrics, and paediatrics), and the effect of AT III in patients with or without the use of concomitant heparin. We assessed the adequacy of the available number of participants and performed trial sequential analysis (TSA) to establish the implications for further research. MAIN RESULTS We included 30 RCTs with a total of 3933 participants (3882 in the primary outcome analyses).Combining all trials, regardless of bias, showed no statistically significant effect of AT III on mortality with a RR of 0.95 (95% CI 0.88 to 1.03), I² statistic = 0%, fixed-effect model, 29 trials, 3882 participants, moderate quality of evidence). For trials with low risk of bias the RR was 0.96 (95% Cl 0.88 to 1.04, I² statistic = 0%, fixed-effect model, 9 trials, 2915 participants) and for high risk of bias RR 0.94 (95% Cl 0.77 to 1.14, I² statistic = 0%, fixed-effect model, 20 trials, 967 participants).For participants with severe sepsis and DIC the RR for mortality was non-significant, 0.95 (95% Cl 0.88 to 1.03, I² statistic = 0%, fixed-effect model, 12 trials, 2858 participants, moderate quality of evidence).We conducted 14 subgroup and sensitivity analyses with respect to the different domains of risk of bias, but detected no statistically significant benefit in any subgroup analyses.Our secondary objective was to assess the benefits and harms of AT III. For complications specific to the trial intervention the RR was 1.26 (95% Cl 0.83 to 1.92, I² statistic = 0%, random-effect model, 3 trials, 2454 participants, very low quality of evidence). For complications not specific to the trial intervention, the RR was 0.71 (95% Cl 0.08 to 6.11, I² statistic = 28%, random-effects model, 2 trials, 65 participants, very low quality of evidence). For complications other than bleeding, the RR was 0.72 ( 95% Cl 0.42 to 1.25, I² statistic = 0%, fixed-effect model, 3 trials, 187 participants, very low quality of evidence). Eleven trials investigated bleeding events and we found a statistically significant increase, RR 1.58 (95% CI 1.35 to 1.84, I² statistic = 0%, fixed-effect model, 11 trials, 3019 participants, moderate quality of evidence) in the AT III group. The amount of red blood cells administered had a mean difference (MD) of 138.49 (95% Cl -391.35 to 668.34, I² statistic = 84%, random-effect model, 4 trials, 137 participants, very low quality of evidence). The effect of AT III in patients with multiple organ failure (MOF) was a MD of -1.24 (95% Cl -2.18 to -0.29, I² statistic = 48%, random-effects model, 3 trials, 156 participants, very low quality of evidence) and for patients with an Acute Physiology and Chronic Health Evaluation score (APACHE) at II and III the MD was -2.18 (95% Cl -4.36 to -0.00, I² statistic = 0%, fixed-effect model, 3 trials, 102 participants, very low quality of evidence). The incidence of respiratory failure had a RR of 0.93 (95% Cl 0.76 to 1.14, I² statistic = 32%, random-effects model, 6 trials, 2591 participants, moderate quality of evidence). AT III had no statistically significant impact on the duration of mechanical ventilation (MD 2.20 days, 95% Cl -1.21 to 5.60, I² statistic = 0%, fixed-effect model, 3 trials, 190 participants, very low quality of evidence); on the length of stay in the ICU (MD 0.24, 95% Cl -1.34 to 1.83, I² statistic = 0%, fixed-effect model, 7 trials, 376 participants, very low quality of evidence) or on the length of stay in hospital in general (MD 1.10, 95% Cl -7.16 to 9.36), I² statistic = 74%, 4 trials, 202 participants, very low quality of evidence). AUTHORS' CONCLUSIONS There is insufficient evidence to support AT III substitution in any category of critically ill participants including the subset of patients with sepsis and DIC. We did not find a statistically significant effect of AT III on mortality, but AT III increased the risk of bleeding events. Subgroup analyses performed according to duration of intervention, length of follow-up, different patient groups, and use of adjuvant heparin did not show differences in the estimates of intervention effects. The majority of included trials were at high risk of bias (GRADE; very low quality of evidence for most of the analyses). Hence a large RCT of AT III is needed, without adjuvant heparin among critically ill patients such as those with severe sepsis and DIC, with prespecified inclusion criteria and good bias protection.
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Affiliation(s)
- Mikkel Allingstrup
- Rigshospitalet, Copenhagen University HospitalJuliane Marie Centre ‐ Anaesthesia and Surgical Clinic Department 4013CopenhagenDenmark
- Rigshospitalet, Copenhagen University HospitalDepartment of Paediatric and Obstetric AnaesthesiaCopenhagenDenmark
| | - Jørn Wetterslev
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmarkDK‐2100
| | - Frederikke B Ravn
- RigshospitaletDepartment of Paediatric and Obstetric AnaesthesiaBlegdamsvej 9, Afsnit 3342, rum 52CopenhagenDenmark
| | - Ann Merete Møller
- Herlev and Gentofte Hospital, University of CopenhagenCochrane Anaesthesia, Critical and Emergency Care GroupHerlev RingvejHerlevDenmark2730
| | - Arash Afshari
- Rigshospitalet, Copenhagen University HospitalJuliane Marie Centre ‐ Anaesthesia and Surgical Clinic Department 4013CopenhagenDenmark
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Manlhiot C, Gruenwald CE, Holtby HM, Brandão LR, Chan AK, Van Arsdell GS, McCrindle BW. Challenges with heparin-based anticoagulation during cardiopulmonary bypass in children: Impact of low antithrombin activity. J Thorac Cardiovasc Surg 2016; 151:444-50. [DOI: 10.1016/j.jtcvs.2015.10.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/24/2015] [Accepted: 10/01/2015] [Indexed: 01/19/2023]
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Levy JH, Sniecinski RM, Welsby IJ, Levi M. Antithrombin: anti-inflammatory properties and clinical applications. Thromb Haemost 2015; 115:712-28. [PMID: 26676884 DOI: 10.1160/th15-08-0687] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/08/2015] [Indexed: 12/14/2022]
Abstract
Many humoral and cellular components participate in bidirectional communication between the coagulation and inflammation pathways. Natural anticoagulant proteins, including antithrombin (AT), tissue factor pathway inhibitor, and protein C, suppress proinflammatory mediators. Conversely, inflammation blunts anticoagulant activity and, when uncontrolled, promotes systemic inflammation-induced coagulation, such as those that occur in disseminated intravascular coagulation and severe sepsis. This review discusses the mechanisms of action and clinical use of AT concentrate in critically ill patients and in the settings of perioperative anticoagulation management for surgery and obstetrics. AT is a serine protease inhibitor with broad anticoagulant activity and potent anti-inflammatory properties. In clinical conditions associated with hereditary or acquired AT deficiency, administration of AT concentrate has been shown to restore proper haemostasis and attenuate inflammation. Of note, AT modulates inflammatory responses not only by inhibiting thrombin and other clotting factors that induce cytokine activity and leukocyte-endothelial cell interaction, but also by coagulation-independent effects, including direct interaction with cellular mediators of inflammation. An increasing body of evidence suggests that AT concentrate may be a potential therapeutic agent in certain clinical settings associated with inflammation. In addition to the well-known anticoagulation properties of AT for the treatment of hereditary AT deficiency, AT also possesses noteworthy anti-inflammatory properties that could be valuable in treating acquired AT deficiency, which often result in thrombotic states associated with an inflammatory component.
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Affiliation(s)
- Jerrold H Levy
- Jerrold H. Levy, MD, FAHA, FCCM, DUMC 3094, Durham, NC 27710, USA, Tel.: +1 919 681 6614, Fax: +1 919 681 8994, E-mail:
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Niebler RA, Woods KJ, Murkowski K, Ghanayem NS, Hoffman G, Mitchell ME, Punzalan RC, Scott JP, Simpson P, Tweddell JS. A Pilot Study of Antithrombin Replacement Prior to Cardiopulmonary Bypass in Neonates. Artif Organs 2015; 40:80-5. [PMID: 26620919 DOI: 10.1111/aor.12642] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Neonates have low levels of antithrombin. Inadequate anticoagulation during cardiopulmonary bypass (CPB) due to low antithrombin activity may result in a poor preservation of the coagulation system during bypass. We hypothesize that antithrombin replacement to neonates prior to CPB will preserve the hemostatic system and result in less postoperative bleeding. A randomized, double-blinded, placebo-controlled pilot study of antithrombin replacement to neonates prior to CPB was conducted. Preoperative antithrombin levels determined the dose of recombinant antithrombin or placebo to be given. Antithrombin levels were measured following the dosing of the antithrombin/placebo, after initiation of bypass, near the completion of bypass, and upon intensive care unit admission. Eight subjects were enrolled. No subject had safety concerns. Mediastinal exploration occurred in two antithrombin subjects and one placebo subject. Antithrombin activity levels were significantly higher in the treated group following drug administration; levels continued to be higher than preoperatively but not different from the placebo group at all other time points. Total heparin administration was less in the antithrombin group; measurements of blood loss were similar in both groups. A single dose of recombinant antithrombin did not maintain 100% activity levels throughout the entire operation. Although no safety concerns were identified in this pilot study, a larger trial is necessary to determine clinical efficacy.
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Affiliation(s)
- Robert A Niebler
- Section of Critical Care, Medical College of Wisconsin, Milwaukee, WI, USA.,Herma Heart Center at Children's Hospital of Wisconsin, Milwaukee, WI, USA
| | - Katherine J Woods
- Section of Critical Care, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Kathleen Murkowski
- Section of Critical Care, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Nancy S Ghanayem
- Section of Critical Care, Medical College of Wisconsin, Milwaukee, WI, USA.,Herma Heart Center at Children's Hospital of Wisconsin, Milwaukee, WI, USA
| | - George Hoffman
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.,Herma Heart Center at Children's Hospital of Wisconsin, Milwaukee, WI, USA
| | - Michael E Mitchell
- Department of Cardiothoracic Surgery, Medical College of Wisconsin, Milwaukee, WI, USA.,Herma Heart Center at Children's Hospital of Wisconsin, Milwaukee, WI, USA
| | - Rowena C Punzalan
- Section of Hematology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - J Paul Scott
- Section of Hematology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Pippa Simpson
- Section of Quantitative Health Sciences, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA
| | - James S Tweddell
- Department of Cardiothoracic Surgery, Medical College of Wisconsin, Milwaukee, WI, USA.,Herma Heart Center at Children's Hospital of Wisconsin, Milwaukee, WI, USA
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11
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Wang J, Ma HP, Ti ALTTL, Zhang YQ, Zheng H. Prothrombotic SERPINC1 Gene Polymorphism may Affect Heparin Sensitivity Among Different Ethnicities of Chinese Patients Receiving Heart Surgery. Clin Appl Thromb Hemost 2014; 21:760-7. [PMID: 25361738 DOI: 10.1177/1076029614556744] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The purpose of this study was to investigate a possible correlation between single-nucleotide polymorphisms (SNPs) of the antithrombin (gene, SERPINC1, and perioperative sensitivity to heparin in patients receiving heart surgery. The SERPINC1 genotype and allele frequency, coagulation parameters 24 hours before and after surgery, and clinical findings were compared among 3 ethnic groups, Han, Uighur, and Kazakh, patientswho received heart surgery. In Han patients, longer coagulation time as well as higher heparin and protamine dosage was observed. SERPINC1 gene sequencing identified 2 mutations in exon 5, g.981A>G (rs5877) and g.1011A>G (rs5878). The minor allele frequency of allele (A>G) for rs5877 and rs5878 was higher in the Han patients and was significantly different among the ethnic groups ( P = .004 and P = .006, respectively). The increased SERPINC1 SNP frequency among Han patients receiving heart surgery might contribute to the differences in their perioperative sensitivity to heparin.
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Affiliation(s)
- Jiang Wang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hai-Ping Ma
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ai Lai Ti Ta Lai Ti
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Yong-Qiang Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hong Zheng
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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