1
|
Tsantes AG, Papadopoulos DV, Roustemis AG, Trikoupis IG, Piovani D, Tsante KA, Mantzios PG, Mavrogenis AF, Sokou R, Kokoris SI, Kriebardis AG, Papagelopoulos PJ, Bonovas S, Tsantes AE. Rotational Thromboelastometry Predicts Transfusion Requirements in Total Joint Arthroplasties. Semin Thromb Hemost 2023; 49:134-144. [PMID: 36055277 DOI: 10.1055/s-0042-1753510] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The frequency of red blood cell (RBC) transfusions is high in total joint arthroplasties, and the hemorrhagic risk is associated with both surgery- and patient-related factors. This study aims to assess the ability of rotational thromboelastometry (ROTEM) to identify patients at high risk for transfusion and excessive bleeding. A prospective observational study was conducted including 206 patients who underwent total knee or hip arthroplasties. Assessment of the coagulation status was performed preoperatively and immediately postoperatively using ROTEM analysis and conventional coagulation tests. The number of RBC transfusions and the postoperative hemoglobin drop were recorded. ROTEM findings were compared between transfused and nontransfused patients, and also between patients with and without excessive bleeding. Higher values of postoperative FIBTEM maximum clot firmness (MCF) were associated with lower risks of transfusion (odds ration [OR]: 0.66, 95% confidence interval [CI]: 0.57-0.78, p<0.001) and excessive bleeding (OR: 0.58, 95% CI: 0.36-0.94, p=0.028). A postoperative FIBTEM MCF value ≤10mm had 80.1% (95% CI: 73.1-85.9%) sensitivity with 75.5% (95% CI: 60.4-87.1%) specificity to predict transfusion requirements, and 70.5% (95% CI: 63.6-76.8%) sensitivity with 88.8% (95% CI: 51.7-99.7%) specificity to predict excessive bleeding. The estimated average probability of transfusion in patients with FIBTEM MCF values of 0 to 4mm is 86.3%. ROTEM assay demonstrated high predictive ability for transfusion and excessive bleeding. Identification of patients at risk for transfusion could allow blood banks to ensure adequate blood supply, while also more intense blood-salvaging strategies could be implemented in these patients.
Collapse
Affiliation(s)
- Andreas G Tsantes
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Anastasios G Roustemis
- First Department of Orthopaedics, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioannis G Trikoupis
- First Department of Orthopaedics, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Daniele Piovani
- Department of Biomedical Sciences, Humanitas University, Milan, Italy.,IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Konstantina A Tsante
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Petros G Mantzios
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Andreas F Mavrogenis
- First Department of Orthopaedics, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Rozeta Sokou
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Styliani I Kokoris
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Anastasios G Kriebardis
- Department of Biomedical Science, Laboratory of Reliability and Quality Control in Laboratory Hematology, School of Health and Caring Science, University of West Attica, Athens, Greece
| | - Panayiotis J Papagelopoulos
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Stefanos Bonovas
- Department of Biomedical Sciences, Humanitas University, Milan, Italy.,IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Argirios E Tsantes
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| |
Collapse
|
2
|
Guan XL, Li L, Li HY, Gong M, Zhang HJ, Wang XL. Risk factor prediction of severe postoperative acute kidney injury at stage 3 in patients with acute type A aortic dissection using thromboelastography. Front Cardiovasc Med 2023; 10:1109620. [PMID: 36844746 PMCID: PMC9948628 DOI: 10.3389/fcvm.2023.1109620] [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: 11/28/2022] [Accepted: 01/17/2023] [Indexed: 02/11/2023] Open
Abstract
Objective Perioperative blood transfusions and postoperative drainage volume not only are the commonly recognized risk factors for acute kidney injury (AKI) but also are indirect indicators of coagulopathy in patients with acute type A aortic dissection (ATAAD). However, standard laboratory tests fail to accurately reflect and assess the overall coagulopathy profile in patients with ATAAD. Thus, this study aimed to explore the association between the hemostatic system and severe postoperative AKI (stage 3) in patients with ATAAD using thromboelastography (TEG). Methods We selected 106 consecutive patients with ATAAD who underwent emergency aortic surgery at Beijing Anzhen Hospital. All participants were categorized into the stage 3 and non-stage 3 groups. The hemostatic system was evaluated using routine laboratory tests and TEG preoperatively. We undertook univariate and multivariate stepwise logistic regression analyses to determine the potential risk factors for severe postoperative AKI (stage 3), with a special investigation on the association between hemostatic system biomarkers and severe postoperative AKI (stage 3). The receiver operating characteristic (ROC) curves were generated to assess the predictive ability of hemostatic system biomarkers for severe postoperative AKI (stage 3). Results A total of 25 (23.6%) patients developed severe postoperative AKI (stage 3), including 21 patients (19.8%) who required continuous renal replacement therapy (RRT). Multivariate logistic regression analysis demonstrated that the preoperative fibrinogen level (OR, 2.02; 95% CI, 1.03 to 3.00; p = 0.04), platelet function (MA level) (OR, 1.23; 95% CI, 1.09 to 1.39; p = 0.001), and cardiopulmonary bypass (CPB) time (OR, 1.01; 95% CI, 1.00 to 1.02; p = 0.02) were independently associated with severe postoperative AKI (stage 3). The cutoff values of preoperative fibrinogen and platelet function (MA level) for predicting severe postoperative AKI (stage 3) were determined to be 2.56 g/L and 60.7 mm in the ROC curve [area under the curve (AUC): 0.824 and 0.829; p < 0.001]. Conclusions The preoperative fibrinogen level and platelet function (measured by the MA level) were identified as potential predictive factors for developing severe postoperative AKI (stage 3) in patients with ATAAD. Thromboelastography could be considered a potentially valuable tool for real-time monitoring and rapid assessment of the hemostatic system to improve postoperative outcomes in patients.
Collapse
Affiliation(s)
| | | | - Hai-Yang Li
- Department of Cardiac Surgery, Beijing Aortic Disease Center, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Laboratory for Cardiovascular Precision Medicine, Beijing Engineering Research Center of Vascular Prostheses, Beijing, China
| | - Ming Gong
- Department of Cardiac Surgery, Beijing Aortic Disease Center, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing Laboratory for Cardiovascular Precision Medicine, Beijing Engineering Research Center of Vascular Prostheses, Beijing, China
| | | | | |
Collapse
|
3
|
Larsson M, Zindovic I, Sjögren J, Svensson PJ, Strandberg K, Nozohoor S. A prospective, controlled study on the utility of rotational thromboelastometry in surgery for acute type A aortic dissection. Sci Rep 2022; 12:18950. [PMID: 36347972 PMCID: PMC9643344 DOI: 10.1038/s41598-022-23701-z] [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: 05/11/2022] [Accepted: 11/03/2022] [Indexed: 11/11/2022] Open
Abstract
To evaluate the hemostatic system with ROTEM in patients undergoing surgery for acute type aortic dissection (ATAAD) using elective aortic procedures as controls. This was a prospective, controlled, observational study. The study was performed at a tertiary referral center and university hospital. Twenty-three patients with ATAAD were compared to 20 control patients undergoing elective surgery of the ascending aorta or the aortic root. ROTEM (INTEM, EXTEM, HEPTEM and FIBTEM) was tested at 6 points in time before, during and after surgery for ATAAD or elective aortic surgery. The ATAAD group had an activated coagulation coming into the surgical theatre. The two groups showed activation of both major coagulation pathways during surgery, but the ATAAD group consistently had larger deficiencies. Reversal of the coagulopathy was successful, although none of the groups reached elective baseline until postoperative day 1. ROTEM did not detect low levels of clotting factors at heparin reversal nor low levels of platelets. This study demonstrated that ATAAD is associated with a coagulopathic state. Surgery causes additional damage to the hemostatic system in ATAAD patients as well as in patients undergoing elective surgery of the ascending aorta or the aortic root. ROTEM does not adequately catch the full coagulopathy in ATAAD. A transfusion protocol in ATAAD should be specifically created to target this complex coagulopathic state and ROTEM does not negate the need for routine laboratory tests.
Collapse
Affiliation(s)
- Mårten Larsson
- grid.411843.b0000 0004 0623 9987Department of Clinical Sciences, Department of Cardiothoracic Surgery, Skåne University Hospital, Lund University, 221 85 Lund, Sweden
| | - Igor Zindovic
- grid.411843.b0000 0004 0623 9987Department of Clinical Sciences, Department of Cardiothoracic Surgery, Skåne University Hospital, Lund University, 221 85 Lund, Sweden
| | - Johan Sjögren
- grid.411843.b0000 0004 0623 9987Department of Clinical Sciences, Department of Cardiothoracic Surgery, Skåne University Hospital, Lund University, 221 85 Lund, Sweden
| | - Peter J. Svensson
- grid.411843.b0000 0004 0623 9987Department of Coagulation Disorders, Skåne University Hospital, Lund University, Malmö, Sweden
| | - Karin Strandberg
- University and Regional Laboratories, Region Skåne, Malmö, Sweden
| | - Shahab Nozohoor
- grid.411843.b0000 0004 0623 9987Department of Clinical Sciences, Department of Cardiothoracic Surgery, Skåne University Hospital, Lund University, 221 85 Lund, Sweden
| |
Collapse
|
4
|
Nath S, Pandey C, Kumar S. Clinical application of viscoelastic point-of-care tests of coagulation-shifting paradigms. Ann Card Anaesth 2022; 25:1-10. [PMID: 35075014 PMCID: PMC8865353 DOI: 10.4103/aca.aca_319_20] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Bleeding during cardiac surgery, liver transplant, trauma and post partum hemorrhage are often multifactorial and these factors are dynamic as new factors crop up during the course of management. Conventional tests of coagulation offer information of a part of the coagulation system and also is time consuming. Viscoelastic point of care tests (VE POCTs) like rotational thromboelastometry, thromboelastogram and Sonoclot, are based on analysis of the viscoelastic properties of clotting blood and provide information for the entire coagulation pathway. In this comprehensive review being presented here, we have examined the pros and cons of VE POCTs including clinical, cost and survival benefits. The recommendations of the various guidelines regarding use of VE POCTs in various scenarios have been discussed. The review also tried to offer suggestions as to their optimal role in management of bleeding during cardiac surgeries, extracorporeal membrane oxygenation, left ventricular assist devices, liver transplant and briefly in trauma and postpartum hemorrhage.
Collapse
|
5
|
Jeong D, Kim SY, Gu JY, Kim HK. Assessment of Rotational Thromboelastometry and Thrombin Generation Assay to Identify Risk of High Blood Loss and Re-Operation After Cardiac Surgery. Clin Appl Thromb Hemost 2022; 28:10760296221123310. [PMID: 36124381 PMCID: PMC9490460 DOI: 10.1177/10760296221123310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Introduction: We aimed to investigate parameters for prediction of post-operative blood loss and re-operation in patients who underwent cardiopulmonary bypass. Methods: Thrombin generation assay, activated partial thromboplastin time, activated clotting time and rotational thromboelastometry (ROTEM) tests were performed at 4 time points in 65 patients: before skin incision (T1), after heparin injection (T2), after protamine reversal (T3) and before skin closure (T4). Results: Pre-operative endogenous thrombin potential (ETP) and peak thrombin levels were significantly lower in patients with high post-operative blood loss (≥ 800 mL) within 24 h than in those with low blood loss (< 800 mL). Clotting time (CT), maximal clotting firmness, clotting firmness time and alpha angle values of ROTEM measured at T2, T3 or T4 were significant predictors for high post-operative blood loss. An increase in CT-EXTEM over 4 time points was significant in patients who had a re-operation within 48 h compared to their counterparts. Conclusions: This study indicates that pre-operative ETP could predict high post-operative blood loss and that intra-operative ROTEM also helps to stratify risks of high post-operative blood loss and re-operation.
Collapse
Affiliation(s)
- Dajeong Jeong
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul, Korea
| | - Seon Young Kim
- Department of Laboratory Medicine, Chungnam National University College of Medicine, Daejeon, Korea
| | - Ja-Yoon Gu
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun Kyung Kim
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul, Korea
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
- Hyun Kyung Kim, MD, PhD, Department of Laboratory Medicine and Cancer Research Institute, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea.
| |
Collapse
|
6
|
Tsantes AG, Papadopoulos DV, Trikoupis IG, Tsante KA, Mavrogenis AF, Koulouvaris P, Vaiopoulos AG, Piovani D, Nikolopoulos GK, Kokoris SI, Bonovas S, Papagelopoulos PJ, Tsantes AE. The Prognostic Performance of Rotational Thromboelastometry for Excessive Bleeding and Increased Transfusion Requirements in Hip Fracture Surgeries. Thromb Haemost 2021; 122:895-904. [PMID: 34719014 DOI: 10.1055/s-0041-1736617] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Hip fracture surgeries are associated with considerable blood loss, while the perioperative coagulopathy is associated with the bleeding risk of these patients. We aimed to evaluate the ability of rotational thromboelastometry (ROTEM) to detect patients at high risk for excessive bleeding and increased transfusion requirements. METHODS We conducted a prospective observational study of 221 patients who underwent hip fracture surgeries. ROTEM analysis was performed preoperatively and immediately postoperatively. Blood loss parameters including blood loss volume, number of transfused red blood cell (RBC) units, and drop in hemoglobin levels were recorded. ROTEM parameters were compared between patients with and without excessive bleeding, and between patients with and without increased transfusion requirements (i.e., ≥2 RBC units). RESULTS The postoperative FIBTEM MCF value ≤15 mm had 66.6% (95% confidence interval [CI]: 59.7-74.1%) sensitivity and 92.0% (95% CI: 80.7-97.7%) specificity to prognose excessive bleeding, and preoperative FIBTEM MCF value ≤15 mm had 80.4% (95% CI: 73.5-86.2%) sensitivity and 91.2% (95% CI: 80.7-97.0%) specificity to prognose increased transfusion requirements. Preoperative FIBTEM MCF ≤11 mm and postoperative FIBTEM MCF ≤15 mm were associated with considerably increased risks of excessive bleeding (odds ratio [OR]: 44.8, 95% CI: 16.5-121.3, p < 0.001; and OR: 23.0, 95% CI: 7.8-67.0, p < 0.001, respectively). CONCLUSION ROTEM parameters demonstrated high prognostic accuracy for excessive bleeding and increased transfusion requirements. This can enable implementation of blood sparing strategies in high-risk patients, while blood banks could be better prepared to ensure adequate blood supply.
Collapse
Affiliation(s)
- Andreas G Tsantes
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitrios V Papadopoulos
- Orthopedic Specialists-UPMC, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, United States
| | - Ioannis G Trikoupis
- First Department of Orthopaedics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantina A Tsante
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Andreas F Mavrogenis
- First Department of Orthopaedics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Panagiotis Koulouvaris
- First Department of Orthopaedics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Aristeidis G Vaiopoulos
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Daniele Piovani
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy.,IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Georgios K Nikolopoulos
- Department of Hygiene, Epidemiology, and Medical Statistics, Medical School, University of Cyprus, Nicosia, Cyprus
| | - Styliani I Kokoris
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Stefanos Bonovas
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy.,IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Panayiotis J Papagelopoulos
- First Department of Orthopaedics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Argirios E Tsantes
- Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| |
Collapse
|
7
|
Role of Using a Thromboelastometry-Based Protocol for Transfusion Management in Combined Coronary Artery Bypass Grafting and Valve Surgery: A Randomized Clinical Trail. Indian J Hematol Blood Transfus 2020; 37:422-429. [PMID: 34267461 DOI: 10.1007/s12288-020-01375-9] [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: 10/23/2019] [Accepted: 10/26/2020] [Indexed: 10/23/2022] Open
Abstract
The aim of this study was to evaluate the impact of using a thromboelastometry-based protocol on transfusion requirements in patients undergoing combined coronary artery bypass grafting (CABG) and valve surgery. 80 adult patients scheduled for elective combined CABG and valve surgery were included in this clinical trial study. Patients were randomly allocated to the thromboelastometry (ROTEM) (n = 40) or control groups (n = 40). In the ROTEM group, transfusion was directed according to a thromboelastometry-based protocol. In the control group, transfusion was conducted according to the routine practices including conventional coagulation testing and clinical judgments. Finally, transfusion requirements were compared between groups. Use of thromboelastometry- based protocol resulted in 67% reduction in blood products units' consumption as well as 23% in the percentage of patients transfused. This reduction was especially evident in relation to fresh frozen plasma (FFP) and platelet consumption. No significant differences were found both in the percentage of patients receiving RBC and number of transfused RBC units. Using thromboelastometry tests incorporated a protocol results in reduction of transfusion requirements in patients undergoing elective combined CABG and valve surgery.
Collapse
|
8
|
Woźniak MJ, Abbasciano R, Monaghan A, Lai FY, Corazzari C, Tutino C, Kumar T, Whiting P, Murphy GJ. Systematic Review and Meta-Analysis of Diagnostic Test Accuracy Studies Evaluating Point-of-Care Tests of Coagulopathy in Cardiac Surgery. Transfus Med Rev 2020; 35:7-15. [PMID: 33187808 DOI: 10.1016/j.tmrv.2020.09.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 09/08/2020] [Accepted: 09/19/2020] [Indexed: 02/01/2023]
Abstract
Treatment guidelines recommend the routine use of point-of-care diagnostic tests for coagulopathy in the management of cardiac surgery patients at risk of severe bleeding despite uncertainty as to their diagnostic accuracy. We performed a systematic review and meta-analysis of studies that evaluated the diagnostic accuracy of viscoelastometry, platelet function tests, and modified thromboelastography (TEG) tests, for coagulopathy in cardiac surgery patients. The reference standard included resternotomy for bleeding, transfusion of non-red cell components, or massive transfusion. We searched MEDLINE, EMBASE, CINAHL, and Clinical Trials.gov, from inception to June 2019. Study quality was assessed using QUADAS-2. Bivariate models were used to estimate summary sensitivity and specificity with (95% confidence intervals). All 29 studies (7440 participants) included in the data synthesis evaluated the tests as predictors of bleeding. No study evaluated their role in the management of bleeding. None was at low risk of bias. Four were judged as low concern regarding applicability. Pooled estimates of diagnostic accuracy were; Viscoelastic tests, 12 studies, sensitivity 0.61 (0.44, 0.76), specificity 0.83 (0.70, 0.91) with significant heterogeneity. Platelet function tests, 12 studies, sensitivity 0.63 (0.53, 0.72), specificity 0.75 (0.64, 0.84) with significant heterogeneity. TEG modification tests, 3 studies, sensitivity 0.80 (0.67, 0.89), specificity 0.76 (0.69, 0.82) with no evidence of heterogeneity. Studies reporting the highest values for sensitivity and specificity had important methodological limitations. In conclusion, we did not demonstrate predictive accuracy for commonly used point-of-care devices for coagulopathic bleeding in cardiac surgery. However, the certainty of the evidence was low.
Collapse
Affiliation(s)
- Marcin J Woźniak
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre in Cardiovascular Medicine, University of Leicester, Clinical Sciences Wing, Glenfield General Hospital, Leicester, UK.
| | - Riccardo Abbasciano
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre in Cardiovascular Medicine, University of Leicester, Clinical Sciences Wing, Glenfield General Hospital, Leicester, UK
| | - Alexandra Monaghan
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre in Cardiovascular Medicine, University of Leicester, Clinical Sciences Wing, Glenfield General Hospital, Leicester, UK
| | - Florence Y Lai
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre in Cardiovascular Medicine, University of Leicester, Clinical Sciences Wing, Glenfield General Hospital, Leicester, UK
| | - Claudio Corazzari
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre in Cardiovascular Medicine, University of Leicester, Clinical Sciences Wing, Glenfield General Hospital, Leicester, UK; Cardiac Surgery Unit, Insubria University, Varese, Italy
| | | | - Tracy Kumar
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre in Cardiovascular Medicine, University of Leicester, Clinical Sciences Wing, Glenfield General Hospital, Leicester, UK
| | - Penny Whiting
- Centre for Research Synthesis and Decision Analysis (CReSyDA), Bristol Medical School, University of Bristol, Bristol, UK
| | - Gavin J Murphy
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre in Cardiovascular Medicine, University of Leicester, Clinical Sciences Wing, Glenfield General Hospital, Leicester, UK
| |
Collapse
|
9
|
Agarwal S, Abdelmotieleb M. Viscoelastic testing in cardiac surgery. Transfusion 2020; 60 Suppl 6:S52-S60. [PMID: 32955756 DOI: 10.1111/trf.16075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/30/2020] [Accepted: 06/30/2020] [Indexed: 11/30/2022]
Abstract
Bleeding complications are common in cardiac surgery and lead to an increase in morbidity and mortality. This is multifactorial in aetiology including the effects of cardiopulmonary bypass, the drugs given to manipulate the coagulation system and the vascular nature of the surgery itself. Viscoelastic tests provide a point of care, rapid assessment of coagulation which offer the advantage of faster turnaround times and a nuanced view of the elements of the coagulation system allowing targeted therapy to be delivered quickly. Both thomboelastography (TEG)and thromboelastometry (ROTEM) have been recommended for use in cardiac surgery, both have shown a reduction in transfusion and bleeding when used as part of a testing algorithm. They are particularly useful in assessing residual heparinisation and fibrinogen levels. Additionally, TEG allows the evaluation of the effects of anti-platelet agents on platelet function. This review discusses the mechanisms by which bleeding occurs in cardiac surgery and explores three uses of viscoelastic testing in cardiac surgery: to predict bleeding, to assess platelet function and peri-operative testing to reduce transfusion.
Collapse
Affiliation(s)
- Seema Agarwal
- Department of Cardiothoracic Anaesthesia and ICM, Manchester University Foundation Trust, Manchester, UK
| | - Mohamed Abdelmotieleb
- Department of Cardiothoracic Anaesthesia and ICM, Manchester University Foundation Trust, Manchester, UK
| |
Collapse
|
10
|
Khalaf-Adeli E, Alavi M, Alizadeh-Ghavidel A, Pourfathollah AA. Comparison of standard coagulation testing with thromboelastometry tests in cardiac surgery. J Cardiovasc Thorac Res 2019; 11:300-304. [PMID: 31824611 PMCID: PMC6891038 DOI: 10.15171/jcvtr.2019.48] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 08/26/2019] [Indexed: 01/20/2023] Open
Abstract
Introduction: According to the several evidences, using thromboelastometry as a point of care test can be effective in reduction in blood loss and transfusion requirements in cardiac surgeries. However, there are limited data regarding to the comparison of thromboelastometry and the standard coagulation tests. In this study, we compared thromboelastometry and standard coagulation tests (PT, PTT and fibrinogen level) in patients under combined coronary-valve surgery. Methods: Forty adult patients who were under on-pump combined coronary-valve surgery were included in this study. Thromboelastometry tests Fibtem, Intem, Extem and Heptem), along with standard coagulation tests (PT, PTT and fibrinogen assay) were simultaneously performed in two time points, before and after the pump (pre-CPB and post-CPB, respectively). Results: A total of 80 blood samples were analyzed. There were no significant correlation between PT test and the CT-Extem parameter as well as PTT and CT-Intem parameter either in pre-CPB and post-CPB (P >0.05). On the contrary, fibrinogen level had high correlation with A10-Fibtem and A10-Extem in pre-PCB (P <0.05). 82% of PT and 84% of PTT measurements were outside the reference range, while abnormal CT in Extem and Intem was observed in 17.9%. Conclusion: For management of bleeding, adequate perioperative haemostatic monitoring is indispensable during cardiac surgery. Standard coagulation tests are time consuming and cannot be interchangeably used with thromboelastomety and relying on their results to decide whether blood transfusion is necessary, leads to the inappropriate transfusion.
Collapse
Affiliation(s)
- Elham Khalaf-Adeli
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Mostafa Alavi
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Alireza Alizadeh-Ghavidel
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Akbar Pourfathollah
- Departments of Immunology, Faculty of Medicine, Tarbiat Modares University of Medical Sciences, Tehran, Iran.,Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| |
Collapse
|
11
|
Postoperative thrombotic effects of tranexamic acid in open heart surgery. Ir J Med Sci 2019; 188:1373-1378. [PMID: 30815786 DOI: 10.1007/s11845-019-01991-z] [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: 09/06/2018] [Accepted: 12/29/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND Following the administration of tranexamic acid, the occurrence of thromboembolic events is a controversial issue. AIMS In this retrospective cohort study, we aimed to determine the possible thromboembolic complications due to tranexamic acid as a prophylactic method in patients undergoing open heart surgery. METHODS The data of 172 adult patients undergoing open heart surgery were analyzed. All patients received tranexamic acid at a dose of 50 mg/kg. The patients were divided into 3 groups as multiple-valve surgery (group 1), coronary bypass alone (group 2), and coronary bypass with valve surgery (group 3). The amount of blood transfusion, bleeding in intra- and postoperative period, and the presence of thromboembolic events including myocardial infarction, stroke, pulmonary embolism, and deep vein thrombosis were investigated. RESULTS Patient demographics and duration of surgery were not significantly different in groups (p > 0.05). Hb, Htc, INR, and platelet levels of all groups did not differ significantly (p > 0.05). In total, 7 patients underwent reexploration. Postoperative DVT, stroke, and seizure were not seen at all. There was no statistically significant difference between groups in terms of the amount of blood transfusion, drainage, or peritoneal hematoma. The length of hospital stay and the mortality rate did not differ (p > 0.05). CONCLUSIONS In patients receiving tranexamic acid infusion at 50 mg/kg dose, reexploration rates remained at 4.1% even after major cardiac surgeries. No thrombosis, stroke, or seizure were reported. Our findings support that tranexamic acid is a safe drug which has positive effect on reducing perioperative bleeding.
Collapse
|
12
|
The Bleeding Post-op CT Patient: Coagulation Tests Versus Thromboelastography. DIFFICULT DECISIONS IN SURGERY: AN EVIDENCE-BASED APPROACH 2019. [DOI: 10.1007/978-3-030-04146-5_30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
13
|
Nam K, Jeon Y, Kim TK, Jo WY, Yoon S, Kwak J, Cho YJ. The velocity curve of the clotting waveform of rotational thromboelastometry predicts bleeding after cardiac surgery but conventional rotational thromboelastometric parameters do not. Minerva Anestesiol 2018; 85:505-513. [PMID: 30394063 DOI: 10.23736/s0375-9393.18.12960-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Early detection of a risk of postoperative bleeding is essential in cardiac surgery patients. The aim of the present study was to evaluate the utility of the first derivative curve (the V-curve) of the clotting waveform of rotational thromboelastometry (ROTEM) in terms of predicting bleeding after cardiac surgery. METHODS We retrospectively analysed 534 cardiac surgery patients. We used the chest tube output during the stay in the intensive care unit to divide patients into a higher blood loss group (HBL group; the fourth quartile) and a lower blood loss group (LBL group; the lower quartiles). We performed multivariable logistic regression using the V-curve parameters and potential confounders including conventional ROTEM parameters. RESULTS In the multivariable model, the adjusted odds ratios for HBL of patients with a lower maximum clotting velocity (MaxVel ≤9 mm*100 s-1) as revealed by extrinsically activated ROTEM (EXTEM), and the area under the velocity curve (AUC ≤988 mm*100) of the fibrin-based extrinsically activated ROTEM (FIBTEM), both measured at skin closure in the end of surgery, were 1.78 (95% CI 1.03 to 3.07) and 2.14 (95% CI 1.20 to 3.82), respectively. However, conventional ROTEM parameters were not included in the final model. Additionally, lower EXTEM MaxVel and FIBTEM AUC values were associated with the need for a higher transfusion volume, longer postoperative intensive care unit and hospital stays, and more frequent re-exploration to control bleeding. CONCLUSIONS The ROTEM V-curve parameters can predict postoperative bleeding and clinical outcomes after cardiac surgery.
Collapse
Affiliation(s)
- Karam Nam
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Yunseok Jeon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Tae K Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Woo Y Jo
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Sehee Yoon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Jooah Kwak
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Youn J Cho
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea -
| |
Collapse
|
14
|
Curry NS, Davenport R, Pavord S, Mallett SV, Kitchen D, Klein AA, Maybury H, Collins PW, Laffan M. The use of viscoelastic haemostatic assays in the management of major bleeding: A British Society for Haematology Guideline. Br J Haematol 2018; 182:789-806. [PMID: 30073664 DOI: 10.1111/bjh.15524] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Nicola S Curry
- Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.,NIHR BRC, Blood Theme, Oxford University, Oxford, UK
| | - Ross Davenport
- Centre for Trauma Sciences, Blizard Institute, Queen Mary University of London, London, UK
| | - Sue Pavord
- Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.,NIHR BRC, Blood Theme, Oxford University, Oxford, UK
| | - Susan V Mallett
- Department of Anaesthesia, Royal Free London NHS Foundation Trust, London, UK
| | | | - Andrew A Klein
- Department of Anaesthesia and Intensive Care, Royal Papworth Hospital, Cambridge, UK
| | - Helena Maybury
- Department of Obstetrics, Leicester Royal Infirmary, Leicester, UK
| | - Peter W Collins
- Department of Haematology, School of Medicine, Cardiff University, Cardiff, UK
| | - Mike Laffan
- Department of Haematology, Imperial College and Hammersmith Hospital, London, UK
| |
Collapse
|
15
|
Bolliger D, Tanaka KA. Which Came First, the Chicken or the Egg?—Clinical Dilemmas in Managing Postoperative Bleeding and Decision-making for Re-exploration After Cardiac Surgery. J Cardiothorac Vasc Anesth 2018; 32:1625-1626. [DOI: 10.1053/j.jvca.2018.01.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Indexed: 11/11/2022]
|
16
|
Meesters MI, Burtman D, van de Ven PM, Boer C. Prediction of Postoperative Blood Loss Using Thromboelastometry in Adult Cardiac Surgery: Cohort Study and Systematic Review. J Cardiothorac Vasc Anesth 2018; 32:141-150. [DOI: 10.1053/j.jvca.2017.08.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Indexed: 12/22/2022]
|
17
|
Bhardwaj V, Malhotra P, Hasija S, Chowdury UK, Pangasa N. Coagulopathies in cyanotic cardiac patients: An analysis with three point - of - care testing devices (Thromboelastography, rotational thromboelastometry, and sonoclot analyzer). Ann Card Anaesth 2017; 20:212-218. [PMID: 28393783 PMCID: PMC5408528 DOI: 10.4103/aca.aca_4_17] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Introduction: In the last few years, viscoelastic point-of-care (POC) coagulation devices such as thromboelastography (TEG), rotational thromboelastometry (ROTEM), and Sonoclot (SON) analyzer have been increasingly used in major surgeries for timely assessment and management of coagulopathies. The aim of the present study was to evaluate coagulation profile of cyanotic cardiac patients with TEG, ROTEM, and SON analyzer. In addition, we assessed the correlation of standard laboratory coagulation tests and postoperative chest drain output (CDO) with the parameters of POC testing devices. Materials and Methods: Thirty-five patients of either gender, belonging to the American Society of Anesthesiologists Grade I–III, and undergoing elective cardiac surgery on cardiopulmonary bypass for cyanotic congenital heart disease were included in this study. To identify possible coagulation abnormalities, blood samples for TEG, ROTEM, SON, and standard laboratory coagulation were collected after induction of anesthesia. The correlations between variables were assessed using Pearson's correlation coefficient. P < 0.05 was considered statistically significant. Results and Discussion: EXTEM clot time (CT) and clot formation time (CFT) were prolonged in 87% and 45% patients whereas INTEM CT and CFT were prolonged in 36% and 73% patients, respectively. FIBTEM maximum clot firmness (MCF) was decreased in 30% patients. We observed significant correlation between fibrinogen concentration and ROTEM FIBTEM MCF (r = 0.94, P < 0.001). The SON platelet function (SON PF) showed good correlation with platelet count (r = 0.85, P < 0.001). We also found significant correlation between preoperative FIBTEM MCF and CDO in first 4 postoperative hours (r = 0.49, P = 0.004) and 24 postoperative hours (r = 0.52, P = 0.005). Receiver operating characteristic analysis demonstrated that SON PF and TEG maximum amplitude are highly predictive of thrombocytopenia below 100 × 109/L (area under the curve [AUC] - 0.97 and 0.92, respectively), while FIBTEM-MCF is highly predictive of hypofibrinogenemia (fibrinogen <150 mg/dL (AUC, 0.99). Conclusion: Cyanotic cardiac patients have preoperative coagulation abnormalities in ROTEM, TEG, and SON parameters. ROTEM FIBTEM is highly predictive of hypofibrinogenemia while SON PF is highly predictive of thrombocytopenia. ROTEM FIBTEM can be studied as a marker of increased postoperative CDO.
Collapse
Affiliation(s)
- Vandana Bhardwaj
- Department of Cardiac Anaesthesia, Cardio Thoracic Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Poonam Malhotra
- Department of Cardiac Anaesthesia, Cardio Thoracic Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Suruchi Hasija
- Department of Cardiac Anaesthesia, Cardio Thoracic Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Ujjwal Kumar Chowdury
- Department of Cardio Thoracic Vascular Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - Neha Pangasa
- Department of Cardiac Anaesthesia, Cardio Thoracic Centre, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|
18
|
Vibede E, Hvas CL, Tønnesen E, Hvas AM. Reply from authors: the use of blood coagulation products requires a thorough re-evaluation. Acta Anaesthesiol Scand 2017. [PMID: 28639352 DOI: 10.1111/aas.12926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- E Vibede
- Department of Clinical Biochemistry, Centre for Haemophilia and Thrombosis, Aarhus University Hospital, Aarhus N, Denmark
| | - C L Hvas
- Department of Anaesthesiology and Intensive Care Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | - E Tønnesen
- Department of Anaesthesiology and Intensive Care Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | - A-M Hvas
- Department of Clinical Biochemistry, Centre for Haemophilia and Thrombosis, Aarhus University Hospital, Aarhus N, Denmark
| |
Collapse
|
19
|
Introduction of thromboelastometry-guided administration of fresh-frozen plasma is associated with decreased allogeneic blood transfusions and post-operative blood loss in cardiopulmonary-bypass surgery. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2017; 16:244-252. [PMID: 28488956 DOI: 10.2450/2017.0265-16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 01/11/2017] [Indexed: 01/01/2023]
Abstract
BACKGROUND Cardiac surgery is frequently associated with excessive blood loss requiring multiple blood transfusions which are, in turn, associated with increased morbidity and mortality. We evaluated the effectiveness of rotational thromboelastometry (ROTEM®)-guided administration of fresh-frozen plasma (FFP) with regards to blood loss, transfusion requirements, and major post-operative complications. MATERIALS AND METHODS Coagulation management in 68 prospective patients undergoing cardiac surgery with cardiopulmonary bypass was based on a treatment algorithm guided by ROTEM® measurements. The primary end-point was blood loss at 24 hours after surgery. Secondary end-points were: (i) need for allogeneic blood products after cardiopulmonary bypass and 24 hours post-operatively, and (ii) post-operative complications until discharge. The results were compared with those of a retrospective, control group of 69 patients who received empirical coagulation management before implementation of the ROTEM®-guided algorithm. RESULTS Although patients with significantly lower haemoglobin levels received less packed red blood cells (PRBC) (840 vs 1,120 mL; p=0.031) and FFP (480 vs 720 mL; p=0.007) after introduction of the ROTEM® algorithm, the intra-operative blood loss and post-operative haemoglobin levels were similar in the ROTEM® and the retrospective control groups. In addition to significantly reduced blood loss and decreased requirements for PRBC (30.8 vs 62.3%; p<0.001) and FFP (25.0 vs 56.5%; p<0.001), the amounts of PRBC (315 vs 840 mL; p<0.001) and FFP (480 vs 840 mL; p=0.001) received during the first 24 hours after surgery were significantly reduced in the ROTEM® group, as was the duration of post-operative hospitalisation. DISCUSSION Compared with empirical treatment, timely ROTEM®-guided FFP administration during cardiac surgery can reduce not only overall blood product use and blood loss but also the duration of hospitalisation.
Collapse
|
20
|
Gorlinger K, Bhardwaj V, Kapoor PM. Simulation in coagulation testing using rotational thromboelastometry: A fast emerging, reliable point of care technique. Ann Card Anaesth 2017; 19:516-20. [PMID: 27397458 PMCID: PMC4971982 DOI: 10.4103/0971-9784.185546] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Computer simulations can come in handy to train medical personnel with necessary skills to face the clinical scenarios involving various coagulopathies. Now a days, point of care (POC) devices such as thromboelastography, Sonoclot analyzer and newly approved rotational thromboelastometry (ROTEM) with faster results to assess coagulopathies are available on bedside of patients. ROTEM is emerging as a quick, portable, and well-validated device to evaluate coagulopathy in critical care and perioperative setup. A novel platelet-aggregometry integrated module enables simultaneous analysis of platelets as well as coagulation tests on the same screen. The entire gamut of POC signature curves obtained with different coagulation defects can be learned with graphical simulations. These simulations can be a valuable strategy to elucidate latent conditions, for which simulation interventions can then be designed to mimic different clinical scenarios.
Collapse
Affiliation(s)
- Klaus Gorlinger
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Essen, Essen, Germany
| | - Vandana Bhardwaj
- Department of Cardiac Anaesthesiology, Cardio Thoracic Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Poonam Malhotra Kapoor
- Department of Cardiac Anaesthesiology, Cardio Thoracic Centre, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|
21
|
Sidlik R, Strauss T, Morag I, Shenkman B, Tamarin I, Lubetsky A, Livnat T, Kenet G. Assessment of Functional Fibrinolysis in Cord Blood Using Modified Thromboelastography. Pediatr Blood Cancer 2016; 63:839-43. [PMID: 26749087 DOI: 10.1002/pbc.25865] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/10/2015] [Accepted: 11/13/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND The fibrinolytic system in newborns is immature and probably impaired. The aim of this study was to prospectively evaluate functional fibrinolytic capacity of newborn's cord blood using a new thromboelastometry (rotational thromboelastogram, ROTEM®) test. METHODS Infants born at Sheba Medical Center were studied prospectively. Cord blood was obtained immediately after clumping, and ROTEM parameters were assessed applying non-activated TEM (NATEM) assay with increasing concentration of tissue plasminogen activator (tPA, 0-200 U/ml). Baseline clotting time (CT), clot formation time (CFT), alpha angle, and maximum clot firmness (MCF) were compared among infants versus adults. Each infant's demographic information was prospectively followed up until discharge. RESULTS One hundred one newborns were tested. CT and CFT values were lower and alpha angles were higher among neonate's cord blood compared to adults (n = 23; P = 0.001, 0.03, and 0.02, respectively). The addition of tPA significantly shortened CT and CFT, and reduced alpha angles and MCF in both groups. The lysis index at 30 min (LI30) and lysis onset time (LOT) decreased significantly, and fibrinolysis was more rapid in the newborns. Hematocrit and platelet counts in neonates correlated with LI30 (P = 0.035 and 0.037, respectively) and LOT (P = 0.02) when higher tPA concentrations were used. ROTEM values were unrelated to the occurrence of postnatal complications. CONCLUSIONS This first report of functional fibrinolysis in cord blood demonstrated that neonatal fibrinolysis may be augmented as compared to adult values. Further studies are required to validate this test and assess its predictive value and clinical relevance.
Collapse
Affiliation(s)
- Rakefet Sidlik
- Departments of Pediatrics, Thrombosis and the National Hemophilia Center, Sheba Medical Center, Tel Hashomer, Israel
| | - Tzipora Strauss
- Neonatology Department, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Iris Morag
- Neonatology Department, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Boris Shenkman
- Departments of Pediatrics, Thrombosis and the National Hemophilia Center, Sheba Medical Center, Tel Hashomer, Israel
| | - Ilia Tamarin
- Departments of Pediatrics, Thrombosis and the National Hemophilia Center, Sheba Medical Center, Tel Hashomer, Israel
| | - Aharon Lubetsky
- Departments of Pediatrics, Thrombosis and the National Hemophilia Center, Sheba Medical Center, Tel Hashomer, Israel
| | - Tami Livnat
- Departments of Pediatrics, Thrombosis and the National Hemophilia Center, Sheba Medical Center, Tel Hashomer, Israel
| | - Gili Kenet
- Departments of Pediatrics, Thrombosis and the National Hemophilia Center, Sheba Medical Center, Tel Hashomer, Israel
| |
Collapse
|
22
|
Gielen CL, Brand A, van Heerde WL, Stijnen T, Klautz RJ, Eikenboom J. Hemostatic alterations during coronary artery bypass grafting. Thromb Res 2016; 140:140-146. [DOI: 10.1016/j.thromres.2015.12.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 11/16/2015] [Accepted: 12/23/2015] [Indexed: 11/28/2022]
|
23
|
Rupa-Matysek J, Trojnarska O, Gil L, Szczepaniak-Chicheł L, Wojtasińska E, Tykarski A, Grajek S, Komarnicki M. Assessment of coagulation profile by thromboelastometry in adult patients with cyanotic congenital heart disease. Int J Cardiol 2015; 202:556-60. [PMID: 26447661 DOI: 10.1016/j.ijcard.2015.09.082] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 09/23/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND Patients with cyanotic congenital heart disease (CCHD) have an increased risk of bleeding and thrombotic complications. Prolonged conventional coagulation screening parameters, such as activated partial thromboplastin time or prothrombin time, are reported in less than 20% of CCHD patients. METHODS The aim of this study was to determine the haemostatic abnormalities in 32 adult patients with CCHD by rotation thromboelastometry (ROTEM) with assessment of coagulation dynamic properties, as a guide for perioperative prophylaxis or haemostatic therapy. The control group consisted of 35 healthy subjects. RESULTS Our results suggest that CCHD patients, in comparison to healthy controls, had a tendency to hypocoagulate with delayed activation of haemostasis and clot formation, initiated by both intrinsic and extrinsic activators. The growth of the clot was slower and the clot firmness was decreased, which may additionally contribute to bleeding diathesis. Moreover, the clot lysis readings suggest higher clot stability in the CCHD group. All velocity parameters were markedly lower in the CCHD patients, indicating a decreased rate of clot formation. Although coagulation tests and platelet count were normal, the usefulness of rotation thromboelastometry in monitoring or guiding therapy in CCHD patients is demonstrated. CONCLUSION In conclusion, our results provide new insights into the data on hypocoagulation with impaired clot lysis in adult CCHD patients as determined by ROTEM. Our findings may assist in determining the optimal management of patients with CCHD undergoing surgery.
Collapse
Affiliation(s)
- Joanna Rupa-Matysek
- Department of Haematology, Poznan University of Medical Sciences, Poznań, Poland.
| | - Olga Trojnarska
- 1st Department of Cardiology, Poznan University of Medical Sciences, Poznań, Poland
| | - Lidia Gil
- Department of Haematology, Poznan University of Medical Sciences, Poznań, Poland
| | - Ludwina Szczepaniak-Chicheł
- Department of Hypertensiology, Angiology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
| | - Ewelina Wojtasińska
- Department of Haematology, Poznan University of Medical Sciences, Poznań, Poland
| | - Andrzej Tykarski
- Department of Hypertensiology, Angiology and Internal Medicine, Poznan University of Medical Sciences, Poznań, Poland
| | - Stefan Grajek
- 1st Department of Cardiology, Poznan University of Medical Sciences, Poznań, Poland
| | | |
Collapse
|
24
|
Haraguchi K, Takehisa T, Mizuno T, Kubota K. Antithrombogenic Properties of Amphiphilic Block Copolymer Coatings: Evaluation of Hemocompatibility Using Whole Blood. ACS Biomater Sci Eng 2015; 1:352-362. [PMID: 33445240 DOI: 10.1021/acsbiomaterials.5b00079] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Antithrombogenicity is one of the most critical properties required for materials used in biomedical devices, particularly in devices that contact blood. The antithrombogenicity of surfaces coated with amphiphilic block copolymers composed of hydrophobic poly(2-methoxyethyl acrylate) (M) and hydrophilic poly(N,N-dimethylacrylamide) (D) segments was investigated using plasma protein and whole blood with regard to protein adsorption, thrombus formation, platelet activation, and clotting kinetics. Three types of block copolymers and a random copolymer were synthesized using one-pot reversible addition-fragmentation chain-transfer (RAFT) polymerization under conditions of high yield and high molecular weight. Triblock and 4-arm block copolymers with MDM and (MD)4 architecture, respectively, showed good adhesion to both organic and inorganic substrates, including polyvinyl chloride (PVC) tubes, and the resulting coated surfaces showed superior protein repellency and hemocompatibility compared to the diblock or random copolymer coatings and noncoated control. In a Chandler-loop method with whole blood, PVC tubes coated with MDM and (MD)4 showed improved thromboresistance and adsorption resistance to blood-derived proteins. This high hemocompatibility was also confirmed with human whole blood by thrombelastography (suppression of blood-clotting behavior in both intrinsic and extrinsic coagulation pathways) and platelet function analyses (significant reductions in the aggregation activity of platelets under two types of stimulation). The antithrombogenicity has been discussed based on the structural analyses of the MDM-coated surface. The results of this study will enable the development of more effective biomedical and analytical devices with excellent antithrombogenic characteristics by using a simple and environmentally friendly approach.
Collapse
Affiliation(s)
- Kazutoshi Haraguchi
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, Sakura, Chiba 285-0078 Japan.,Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Chiba 275-8575 Japan
| | - Toru Takehisa
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, Sakura, Chiba 285-0078 Japan.,Central Research Laboratories, DIC Co., Sakura, Chiba 285-8668, Japan
| | - Toshihide Mizuno
- Department of Artificial Organs, Research Institute, National Cerebral and Cardiovascular Center, Suita, Osaka, 565-8565, Japan
| | - Kazuomi Kubota
- Material Chemistry Laboratory, Kawamura Institute of Chemical Research, Sakura, Chiba 285-0078 Japan.,Central Research Laboratories, DIC Co., Sakura, Chiba 285-8668, Japan
| |
Collapse
|
25
|
Wikner J, Beck-Broichsitter BE, Schlesinger S, Schön G, Heiland M, Assaf AT, Rashad A, Riecke B, Heckel K. Thromboelastometry: A contribution to perioperative free-flap management. J Craniomaxillofac Surg 2015; 43:1065-71. [PMID: 26130612 DOI: 10.1016/j.jcms.2015.05.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 05/23/2015] [Accepted: 05/26/2015] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND Microvascular tissue transfer is a fundamental part of reconstructive surgery. Different perioperative anticoagulation regimens exist, influencing hemostatic parameters. Since bleeding and thrombosis are major reasons for revision procedures and flap loss, current practice regarding anticoagulative treatment needs further refinement. Thromboelastometry has been demonstrated as worthwhile in the determination of alterations of the anticoagulation cascade. We evaluated this aspect of thromboelastometry for free flap surgery. METHODS Thirty-five patients undergoing free-flap surgery were enrolled in this study. Blood samples were obtained at three time points: at the beginning of surgery, at time of anastomosis and after 24 h. At each time point, thromboelastometry with special regard to clotting times for the intrinsic and extrinsic paths of coagulation was immediately performed. Global coagulation markers and clinical parameters were collected simultaneously. RESULTS Hemostatic changes were deducible using thromboelastometry perioperatively. Measured parameters differed significantly over time (p < 0.05). Heparin therapy showed a significant effect on the measured slope of INTEM-clotting times (p < 0.001). Altered values of thromboelastometry suggested non-inferiority to standard testing. Neither standard testing nor thromboelastometry were capable of predicting adverse events such as thrombosis, bleeding or flap loss (p > 0.05). CONCLUSIONS Thromboelastometry monitors hemostatic effects almost in real-time and could serve as a supplementary tool in microvascular tissue transfer once its use has been standardized. The utilization of thromboelastometry allows for assessment of the anticoagulation needs of individual patients undergoing free flap surgery, which is frequently accompanied by hemostatic changes in the perioperative setting. Our findings implicate further validation of thromboelastometry in free-flap surgery.
Collapse
Affiliation(s)
- Johannes Wikner
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Germany.
| | | | - Saskia Schlesinger
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical CenterHamburg-Eppendorf, Germany
| | - Gerhard Schön
- Medical Biometry and Epidemiology, University Medical Center Hamburg Eppendorf, Germany
| | - Max Heiland
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Germany
| | - Alexandre Thomas Assaf
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Germany
| | - Ashkan Rashad
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Germany
| | - Björn Riecke
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Germany
| | - Kai Heckel
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical CenterHamburg-Eppendorf, Germany
| |
Collapse
|
26
|
Corredor C, Wasowicz M, Karkouti K, Sharma V. The role of point-of-care platelet function testing in predicting postoperative bleeding following cardiac surgery: a systematic review and meta-analysis. Anaesthesia 2015; 70:715-31. [PMID: 25916344 DOI: 10.1111/anae.13083] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2015] [Indexed: 12/23/2022]
Abstract
This systematic review and meta-analysis appraises the utility of point-of-care platelet function tests for predicting blood loss and transfusion requirements in cardiac surgical patients, and analyses whether their use within a transfusion management algorithm is associated with improved patient outcomes. We included 30 observational studies incorporating 3044 patients in the qualitative assessment, and nine randomised controlled trials including 1057 patients in the meta-analysis. Platelet function tests demonstrated significant variability in their ability to predict blood loss and transfusion requirements. Their use within a blood transfusion algorithm demonstrated a reduction in blood loss at longest follow-up (mean difference -102.9 ml (95% CI -149.9 to -56.1 ml), p < 0.001), and transfusion of packed red cells (RR 0.86 (95% CI 0.78-0.94), p = 0.001) and fresh frozen plasma (RR 0.42 (95% CI 0.30-0.59), p < 0.001). Viscoelastic methods used in combination with other platelet function tests achieved greater reduction in blood loss (mean difference -111.8 ml (95% CI -174.9 to -49.1 ml), p = 0.0005) compared with their use alone (mean difference -90.6 ml (95% CI 166.1-15.0 ml), p = 0.02). We conclude that incorporation of point-of-care platelet function tests into transfusion management algorithms is associated with a reduction in blood loss and transfusion requirements in cardiac surgery patients.
Collapse
Affiliation(s)
- C Corredor
- Department of Anaesthesia, St. George's Hospital, London, UK
| | - M Wasowicz
- Department of Anesthesia and Pain Management, Toronto General Hospital, Toronto, Ontario, Canada
| | - K Karkouti
- Department of Anesthesia and Pain Management, Toronto General Hospital, Toronto, Ontario, Canada
| | - V Sharma
- Department of Anaesthesia, St. George's Hospital, London, UK
| |
Collapse
|
27
|
Greiff G, Pleym H, Stenseth R, Berg KS, Wahba A, Videm V. Prediction of Bleeding After Cardiac Surgery: Comparison of Model Performances: A Prospective Observational Study. J Cardiothorac Vasc Anesth 2015; 29:311-9. [DOI: 10.1053/j.jvca.2014.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Indexed: 11/11/2022]
|
28
|
Fayed N, Mourad W, Yassen K, Görlinger K. Preoperative Thromboelastometry as a Predictor of Transfusion Requirements during Adult Living Donor Liver Transplantation. Transfus Med Hemother 2015; 42:99-108. [PMID: 26019705 DOI: 10.1159/000381733] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 03/20/2015] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The ability to predict transfusion requirements may improve perioperative bleeding management as an integral part of a patient blood management program. Therefore, the aim of our study was to evaluate preoperative thromboelastometry as a predictor of transfusion requirements for adult living donor liver transplant recipients. METHODS The correlation between preoperative thromboelastometry variables in 100 adult living donor liver transplant recipients and intraoperative blood transfusion requirements was examined by univariate and multivariate linear regression analysis. Thresholds of thromboelastometric parameters for prediction of packed red blood cells (PRBCs), fresh frozen plasma (FFP), platelets, and cryoprecipitate transfusion requirements were determined with receiver operating characteristics analysis. The attending anesthetists were blinded to the preoperative thromboelastometric analysis. However, a thromboelastometry-guided transfusion algorithm with predefined trigger values was used intraoperatively. The transfusion triggers in this algorithm did not change during the study period. RESULTS Univariate analysis confirmed significant correlations between PRBCs, FFP, platelets or cryoprecipitate transfusion requirements and most thromboelastometric variables. Backward stepwise logistic regression indicated that EXTEM coagulation time (CT), maximum clot firmness (MCF) and INTEM CT, clot formation time (CFT) and MCF are independent predictors for PRBC transfusion. EXTEM CT, CFT and FIBTEM MCF are independent predictors for FFP transfusion. Only EXTEM and INTEM MCF were independent predictors of platelet transfusion. EXTEM CFT and MCF, INTEM CT, CFT and MCF as well as FIBTEM MCF are independent predictors for cryoprecipitate transfusion. Thromboelastometry-based regression equation accounted for 63% of PRBC, 83% of FFP, 61% of cryoprecipitate, and 44% of platelet transfusion requirements. CONCLUSION Preoperative thromboelastometric analysis is helpful to predict transfusion requirements in adult living donor liver transplant recipients. This may allow for better preparation and less cross-matching prior to surgery. The findings of our study need to be re-validated in a second prospective patient population.
Collapse
Affiliation(s)
- Nirmeen Fayed
- Department of Anesthesia, National Liver Institute, Menoufiya University, Shebeen El Kom City, Egypt
| | - Wessam Mourad
- Department of Public Health, Community Medicine and Statistics, National Liver Institute, Menoufiya University, Shebeen El Kom City, Egypt
| | - Khaled Yassen
- Department of Anesthesia, National Liver Institute, Menoufiya University, Shebeen El Kom City, Egypt
| | - Klaus Görlinger
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany ; Tem International GmbH, Munich, Germany
| |
Collapse
|
29
|
Practice guidelines for perioperative blood management: an updated report by the American Society of Anesthesiologists Task Force on Perioperative Blood Management*. Anesthesiology 2015; 122:241-75. [PMID: 25545654 DOI: 10.1097/aln.0000000000000463] [Citation(s) in RCA: 446] [Impact Index Per Article: 49.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Abstract
The American Society of Anesthesiologists Committee on Standards and Practice Parameters and the Task Force on Perioperative Blood Management presents an updated report of the Practice Guidelines for Perioperative Blood Management.
Supplemental Digital Content is available in the text.
Collapse
|
30
|
Ghavidel AA, Toutounchi Z, Shahandashti FJ, Mirmesdagh Y. Rotational thromboelastometry in prediction of bleeding after cardiac surgery. Asian Cardiovasc Thorac Ann 2015; 23:525-9. [DOI: 10.1177/0218492314566330] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Reexploration and its associated complications significantly affect hospital mortality and morbidity. Therefore, to prevent postoperative bleeding and its related complications, using an appropriate modality is essential during cardiac surgery. Methods Four hundred patients (296 males and 104 females, mean age 60.8 ± 9 years) scheduled for first-time coronary artery bypass graft surgery were prospectively enrolled. Blood samples were obtained for ROTEM testing before surgery and 30 min after heparin reversal. The patients were divided into 2 groups: group 1 was patients with no abnormal postoperative bleeding and group 2 was patients who required reexploration for abnormal postoperative bleeding. Group 2 patients were divided into 2 subgroups: 2a was patients with surgical bleeding and group 2b was patients with nonsurgical bleeding. Variables were compared between groups. Results Among the 400 patients, 42 were reexplored. Hospital stay was significantly longer and hospital deaths more frequent in group 2 patients ( p < 0.001 and p = 0.010, respectively). Ten (2.8%) patients had abnormal preoperative results of ROTEM in group 1 compared to 14 (33.3%) in group 2 ( p < 0.001). After surgery, the number of patients with abnormal ROTEM results was significantly different between the 2 groups: 6 (1.7%) in group 1 vs. 14 (33.3%) in group 2 ( p < 0.001). Four (12.5%) patients in group 2a had abnormal preoperative ROTEM results compared to 10 (100%) in group 2a ( p < 0.001). Conclusion Measuring coagulation factors by ROTEM both before surgery and after heparin reversal can identify patients at increased risk of postoperative bleeding.
Collapse
Affiliation(s)
- Alireza Alizadeh Ghavidel
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Zia Toutounchi
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | | | - Yalda Mirmesdagh
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
31
|
Comparison of three point-of-care testing devices to detect hemostatic changes in adult elective cardiac surgery: a prospective observational study. BMC Anesthesiol 2014; 14:80. [PMID: 25276093 PMCID: PMC4179787 DOI: 10.1186/1471-2253-14-80] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 07/21/2014] [Indexed: 11/19/2022] Open
Abstract
Background Bleeding complications in cardiac surgery may lead to increased morbidity and mortality. Traditional blood coagulation tests are not always suitable to detect rapid changes in the patient's coagulation status. Point-of-care instruments such as the TEG (thromboelastograph) and RoTEM (thromboelastometer) have been shown to be useful as a guide for the clinician in the choice of blood products and they may lead to a reduction in the need for blood transfusion, contributing to better patient blood management. Methods The purpose of this study was to evaluate the ability of the TEG, RoTEM and Sonoclot instruments to detect changes in hemostasis in elective cardiac surgery with cardiopulmonary bypass and to investigate possible correlations between variables from these three instruments and routine hematological coagulation tests. Blood samples from thirty-five adult patients were drawn before and after surgery and analyzed in TEG, RoTEM, Sonoclot and routine coagulation tests. Data were compared using repeated measures analysis of variance and Pearson's test for linear correlation. Results We found significant changes for all TEG variables after surgery, for three of the RoTEM variables, and for one variable from the Sonoclot. There were significant correlations postoperatively between plasma fibrinogen levels and variables from the three instruments. Conclusions TEG and RoTEM may be used to detect changes in hemostasis following cardiac surgery with CPB. Sonoclot seems to be less suitable to detect such changes. Variables from the three instruments correlated with plasma fibrinogen and could be used to monitor treatment with fibrinogen concentrate.
Collapse
|
32
|
Gielen C, Dekkers O, Stijnen T, Schoones J, Brand A, Klautz R, Eikenboom J. The effects of pre- and postoperative fibrinogen levels on blood loss after cardiac surgery: a systematic review and meta-analysis. Interact Cardiovasc Thorac Surg 2013; 18:292-8. [PMID: 24316606 DOI: 10.1093/icvts/ivt506] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Fibrinogen concentrate is increasingly used in cardiac surgery when bleeding is anticipated or ongoing. Since randomized clinical studies to support this are lacking, it is relevant to know whether lower fibrinogen levels are associated with excessive bleeding. We performed a systematic review and meta-analysis to define the association between fibrinogen levels and blood loss after cardiac surgery. METHODS A database search (January 2013) was performed on publications assessing the association between pre- and postoperative fibrinogen levels and postoperative blood loss in adult patients undergoing cardiac surgery. Cohort studies and case-control studies were eligible for inclusion. The main outcome was the pooled correlation coefficient, calculated via Fisher's Z transformation scale, in a random-effects meta-analysis model stratified for the time point at which fibrinogen was measured. RESULTS A total of 20 studies were included. The pooled correlation coefficient of studies (n = 9) concerning preoperative fibrinogen levels and postoperative blood loss was -0.40 (95% confidence interval: -0.58, -0.18), pointing towards more blood loss in patients with lower preoperative fibrinogen levels. Among papers (n = 16) reporting on postoperative fibrinogen levels and postoperative blood loss, the pooled correlation coefficient was -0.23 (95% confidence interval: -0.29, -0.16). CONCLUSIONS Our meta-analysis indicated a significant but weak-to-moderate correlation between pre- and postoperative fibrinogen levels and postoperative blood loss in cardiac surgery. This moderate association calls for appropriate clinical studies on whether fibrinogen supplementation will decrease postoperative blood loss.
Collapse
Affiliation(s)
- Chantal Gielen
- Departments of Cardio-Thoracic Surgery and Thrombosis and Hemostasis, Leiden University Medical Center (LUMC), Leiden, Netherlands
| | | | | | | | | | | | | |
Collapse
|
33
|
Impact of changes in haematocrit level and platelet count on thromboelastometry parameters. Thromb Res 2013; 131:249-53. [DOI: 10.1016/j.thromres.2013.01.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 12/13/2012] [Accepted: 01/02/2013] [Indexed: 11/24/2022]
|
34
|
Madsen DE, Ingerslev J, Sidelmann JJ, Thorn JJ, Gram J. Intraoperative blood loss during orthognathic surgery is predicted by thromboelastography. J Oral Maxillofac Surg 2012; 70:e547-52. [PMID: 22990100 DOI: 10.1016/j.joms.2012.06.182] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 06/07/2012] [Accepted: 06/14/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE The aim of this prospective study was to evaluate the predictive value of the viscoelastic properties of whole blood samples collected preoperatively in relation to intraoperative blood loss in patients subjected to orthognathic surgery. MATERIALS AND METHODS Forty-one consecutive patients underwent simultaneous mandibular and maxillary osteotomy. Whole blood samples were collected preoperatively. The intraoperative blood loss volume was precisely estimated. The viscoelastic properties of whole blood samples were evaluated by thromboelastography (TEG), a global method that addresses the complex interplay among coagulation factors, blood platelets, and components of the fibrinolytic system. Blood platelet count, activated partial thromboplastin time, prothrombin time, plasma fibrinogen concentration, and D-dimer concentration were determined by routine methods. RESULTS Patients were separated into 2 groups according to their intraoperative bleeding volume (≤ 400 mL and >400 mL). No significant associations were observed between routine coagulation tests and intraoperative bleeding volume. The TEG results for the groups were compared. Significant associations were observed between intraoperative blood loss and the clot formation time, maximum clot firmness, and α angle, whereas bleeding volume was not related to the fibrinolytic resistance of the blood clot. An α angle exceeding 67° predicted with 95% certainty a blood loss of 400 mL or less. CONCLUSIONS We conclude that intraoperative bleeding volume in patients subjected to orthognathic surgery can be predicted by means of preoperative TEG analysis. TEG results provide optimization of patient safety and can be used for the evaluation of bleeding risk.
Collapse
Affiliation(s)
- Daniel E Madsen
- Unit for Thrombosis Research, Institute of Public Health, University of Southern Denmark, Esbjerg, Denmark.
| | | | | | | | | |
Collapse
|
35
|
Plag C, Mofid Y, Mateéo T, Callé R, Ossant F. High frequency ultrasound imaging of whole blood gelation and retraction during in vitro coagulation. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2012; 131:4196-4202. [PMID: 22559391 DOI: 10.1121/1.3702431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Blood coagulation is a series of biochemical reactions resulting in the mechanical transformation of liquid blood into a gel. As a consequence, ultrasound, being mechanical waves, can provide specific details on the dynamics of coagulation. In fact, previous high-frequency ultrasound monitoring studies have shown drastic changes in ultrasound velocity and attenuation during whole blood coagulation and a model discussing the observed mechanical transformations was proposed. In this paper, a technique of visualization of the clotting mechanism is introduced, which complements and revises the previous hypotheses. This method is based on the monitoring of scatterers (red blood cells) movement through a time correlation of 20 MHZ rf signals. It allows the computing of both a displacement map revealing local details and disparities and a parameter quantifying the global structural behavior. Qualitative results for two typical samples show that the technique provides new insights on the gelation dynamics. A quantitative analysis computed from 12 healthy subjects found that the changes in the structural parameters are significantly correlated to the changes in velocity and attenuation, both dependent on the mechanical transformations in the sample. The previous model is therefore revised and a new way to measure gel and retraction times is proposed.
Collapse
Affiliation(s)
- Camille Plag
- UMRS INSERM U930, CNRS ERL 3106, Université François Rabelais de Tours, Equipe 5, France.
| | | | | | | | | |
Collapse
|
36
|
Abstract
Objectives: Blood loss has long been recognised as a significant problem in burn surgery. Efforts have been made in the past to quantify this loss and determine what factors influence it the most. Several researchers have been able to produce and validate formulae that predict the volume of blood loss during excisional surgery. Accurately determining this allows appropriate volumes of blood to be ordered, reducing risk to patients and saving scarce resources. This article reviews the literature on blood loss in burns surgery, including influencing factors, methods of prediction and effective management. Methods: A literature review was conducted to examine methods used to measure, calculate and reduce blood loss in burn surgery. The validity of these methods and the limitations on accuracy will be discussed. Alternative methods shall also be considered. Results: Most current methods of estimating blood loss attempt to determine the volume of erythrocytes required to return haemoglobin concentrations to their pre-operative level. Various formulae have been developed to calculate this volume. Conclusions: Several authors have produced formulae that predict the volume of blood loss to a significant degree of accuracy. Different techniques have been shown to significantly reduce blood loss. In other areas of surgery, thromboelastometry has been used to identify the levels of specific blood component defects. The use of this method in burns surgery could, in the future, help develop a protocol for operative blood transfusion.
Collapse
Affiliation(s)
| | - Yezen Sheena
- Burns and Plastic Surgery Department, University Hospital Birmingham, NHS Foundation Trust, UK
| | - Steven LA Jeffery
- Burns and Plastic Surgery Department, University Hospital Birmingham, NHS Foundation Trust, UK
- Burns and Plastic Surgery Department, The Royal Centre for Defence Medicine, Birmingham, UK
| |
Collapse
|
37
|
Ranucci M, Aronson S, Dietrich W, Dyke CM, Hofmann A, Karkouti K, Levi M, Murphy GJ, Sellke FW, Shore-Lesserson L, von Heymann C. Patient blood management during cardiac surgery: Do we have enough evidence for clinical practice? J Thorac Cardiovasc Surg 2011; 142:249.e1-32. [DOI: 10.1016/j.jtcvs.2011.04.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 02/09/2011] [Accepted: 04/08/2011] [Indexed: 12/13/2022]
|
38
|
Abstract
Bleeding is a considerable clinical problem during and after pediatric heart surgery. While the primary cause of bleeding is surgical trauma, its treatment is often complicated by the presence of coagulopathy. The principle causes of coagulopathy are discussed to provide a context for treatment. The role of laboratory and point of care tests, which aim to identify the cause of bleeding in the individual patient, is also discussed. An attempt is made to examine the current evidence for available therapies, including use of blood products and, more recently proposed, approaches based on human or recombinant factor concentrates.
Collapse
Affiliation(s)
- Philip Arnold
- Jackson Rees Department of Paediatric Anaesthesia, Alder Hey Children's Hospital, Eaton Road, Liverpool, UK.
| |
Collapse
|
39
|
Coakley M, Hall JE, Evans C, Duff E, Billing V, Yang L, McPherson D, Stephens E, Macartney N, Wilkes AR, Collins PW. Assessment of thrombin generation measured before and after cardiopulmonary bypass surgery and its association with postoperative bleeding. J Thromb Haemost 2011; 9:282-92. [PMID: 21091865 DOI: 10.1111/j.1538-7836.2010.04146.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Bleeding after cardiopulmonary bypass (CPB) is a major cause of morbidity and mortality and consumes large amounts of blood. Identifying patients at increased risk of bleeding secondary to hemostatic impairment may improve clinical outcomes by allowing early intervention. METHODS This present study recruited 77 patients undergoing CPB and measured coagulation screens, coagulation factors, TEG(®), Rotem(®) and thrombin generation (TG) before surgery and 30 min after heparin reversal. The tests were analyzed to investigate whether they identified patients at increased risk of excess bleeding (defined as > 1000 mL) in the first 24 h postoperatively. RESULTS Patients who bled > 1000 mL had a lower: platelet count (P < 0.02), factors (F)IX, X and XI (P < 0.005), endogenous thrombin potential (ETP) and an initial rate of TG (P < 0.02) and higher activated partial thromboplastin time (aPTT) (P < 0.001) than patients who bled < 1000 mL. Receiver operating characteristic (ROC) analysis was significant for post-operative TG and aPTT (P < 0.001). Furthermore, reduced pre-operative TG was associated with increased postoperative bleeding (P < 0.02). Pre- and postoperative TG were correlated (ρ = 0.7, P < 0.001). TEG(®), Rotem(®) and prothrombin time (PT) at either time point were not associated with increased bleeding. CONCLUSION These data suggest that pre-operative defects in the propagation phase of hemostasis are exacerbated during CPB, contributing to bleeding post-CPB. TG taken both pre- and postoperatively could potentially be used to identify patients at an increased risk of bleeding post-CPB.
Collapse
Affiliation(s)
- M Coakley
- Department of Anaesthetics, Intensive Care and Pain Medicine, School of Medicine, Cardiff University, Heath Park, Cardiff, UK
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Use of fibrin-based thromboelastometry for cryoprecipitate transfusion in cardiac surgery involving deep hypothermic circulatory arrest during cardiopulmonary bypass. Blood Coagul Fibrinolysis 2010; 21:687-91. [DOI: 10.1097/mbc.0b013e32833e4228] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
41
|
Modified thromboelastography evaluation of platelet dysfunction in patients undergoing coronary artery surgery. Eur J Cardiothorac Surg 2010; 37:1367-74. [DOI: 10.1016/j.ejcts.2009.12.044] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2009] [Revised: 12/10/2009] [Accepted: 12/31/2009] [Indexed: 11/16/2022] Open
|
42
|
Davidson SJ, Kelleher AA. Reply. J Cardiothorac Vasc Anesth 2010. [DOI: 10.1053/j.jvca.2009.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
43
|
Huet R, Cernak V. The Predictability of Blood Loss With Thromboelastometry. J Cardiothorac Vasc Anesth 2010; 24:381; author reply 381-2. [DOI: 10.1053/j.jvca.2009.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2008] [Indexed: 11/11/2022]
|
44
|
Roullet S, Pillot J, Freyburger G, Biais M, Quinart A, Rault A, Revel P, Sztark F. Rotation thromboelastometry detects thrombocytopenia and hypofibrinogenaemia during orthotopic liver transplantation. Br J Anaesth 2010; 104:422-8. [PMID: 20185519 DOI: 10.1093/bja/aeq022] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Orthotopic liver transplantation can be associated with haemorrhage, particularly in patients with severe liver dysfunction. We assessed the value of rotation thromboelastometry (ROTEM) to monitor coagulation in the operating theatre, its correlation with routine laboratory findings, and its ability to guide platelet (Plt) and fibrinogen (Fg) transfusion. METHODS Twenty-three patients were included in this prospective observational study. Laboratory tests and ROTEM tests (EXTEM, INTEM, FIBTEM, and APTEM) were performed six times during the procedure. Correlations between laboratory findings and ROTEM parameters were sought. Thresholds for ROTEM parameters were determined with receiver-operating characteristic (ROC) curve analysis according to Plt count and Fg levels. RESULTS Clot amplitude at 10 min (A10) of EXTEM was well correlated with Plt count and Fg levels (R(2)=0.46 and 0.52, respectively, P<0.0001). FIBTEM A10 was correlated with Fg (R(2)=0.55, P<0.0001). ROC analysis showed that EXTEM A10 with a threshold of 29 mm predicted thrombocytopenia with a sensitivity of 79% and a specificity of 60%, and a threshold of 26 mm predicted hypofibrinogenaemia with a sensitivity of 83% and a specificity of 75%. CONCLUSIONS ROTEM is useful for the global assessment of coagulation in the operating theatre. EXTEM was the most informative for assessing the whole coagulation process and A10 showed value in guiding Plt and Fg transfusion.
Collapse
Affiliation(s)
- S Roullet
- Centre Hospitalier Universitaire de Bordeaux, France.
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Basora M, Fita G, Panigua P, Litvan H, Fló A, Reverter JC. [Survey of perioperative hemostasis and transfusion management in cardiac surgery: how do anesthesiologists practice?]. REVISTA ESPANOLA DE ANESTESIOLOGIA Y REANIMACION 2010; 57:3-10. [PMID: 20196517 DOI: 10.1016/s0034-9356(10)70156-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE To determine practices related to control of perioperative hemostasis and transfusion in patients undergoing cardiac surgery in Spain, including the extent to which protocols are being used. METHODS A questionnaire was created to collect information from physicians in anesthesiology and postoperative recovery care between July 1 and September 20, 2007. The physicians were asked about practice in the 12 months prior to the survey. RESULTS Thirty-four hospitals responded. Seventy percent reported that they did not have protocols or guidelines for the control of hemostasis during cardiac surgery. Forty-four percent did not have information on the proportion of patients who received transfusions; 47% gave transfusions to 75% of patients. The standard preoperative tests were platelet counts, activated partial thromboplastin time, and prothrombin time. Acetylsalicylic acid and clopidogrel were suspended before surgery at 15 (44%) and 25 (73%) hospitals, respectively. In cases of resistance to heparin, additional doses of the drug were injected, in combination with plasma or antithrombin in 29% and 12% of the hospitals, respectively. In the intensive postoperative recovery care unit, only 1 hospital used thromboelastography. Only 1 other hospital used a platelet function analyzer. CONCLUSIONS Hemostasis, perioperative coagulation, and criteria for transfusion vary widely among the hospitals surveyed. Few guidelines are available and they are not often being followed. A high percentage of patients receive transfusions, although not all hospitals can cite a figure. New technology has not been widely applied.
Collapse
Affiliation(s)
- M Basora
- Servicio de Anestesiología y Reanimación, Hospital Clínic, Barcelona.
| | | | | | | | | | | |
Collapse
|
46
|
|