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Lagny MG, Gothot A, Hans GA, Koch JN, Blaffart F, Hella D, Donneau AF, Roediger L, Lecut C, Pincemaïl J, Cheramy-Bien JP, Defraigne JO. Efficacy of the RemoweLL cardiotomy reservoir for fat and leucocyte removal from shed mediastinal blood: a randomized controlled trial. Perfusion 2016; 31:544-51. [DOI: 10.1177/0267659116649427] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Introduction: Re-transfusion of lipid particles and activated leucocytes with shed mediastinal blood (SMB) can aggravate cardiopulmonary bypass-associated inflammation and increase the embolic load. This study evaluated the fat and leucocyte removal capacity of the RemoweLL cardiotomy reservoir. Methods: Forty-five patients undergoing elective on-pump cardiac surgery were randomly allocated to filtration of SMB using the RemoweLL or the Admiral cardiotomy reservoir. The primary outcome was a drop in leucocytes and lipid particles obtained with the two filters. The effect of the filters on other blood cells and inflammatory mediators, such as myeloperoxidase (MPO), was also assessed. Results: The RemoweLL cardiotomy filter removed 16.5% of the leucocytes (p<0.001) while no significant removal of leucocytes was observed with the Admiral (p=0.48). The percentage reductions in lipid particles were similar in the two groups (26% vs 23%, p=0.2). Both filters similarly affected the level of MPO (p=0.71). Conclusion: The RemoweLL filter more effectively removed leucocytes from SMB than the Admiral. It offered no advantage in terms of lipid particle clearance.
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Affiliation(s)
- Marc-Gilbert Lagny
- Division of Cardio-vascular and Thoracic Surgery, University of Liège Hospital, Liège, Belgium
| | - Andre Gothot
- Haematology Department, University of Liège Hospital, Liège, Belgium
| | - Gregory A. Hans
- Division of Anaesthesiology, University of Liège Hospital, Liege Belgium
| | - Jean-Noël Koch
- Division of Cardio-vascular and Thoracic Surgery, University of Liège Hospital, Liège, Belgium
| | - Francine Blaffart
- Division of Cardio-vascular and Thoracic Surgery, University of Liège Hospital, Liège, Belgium
| | - Dominique Hella
- Division of Cardio-vascular and Thoracic Surgery, University of Liège Hospital, Liège, Belgium
| | | | - Laurence Roediger
- Division of Anaesthesiology, University of Liège Hospital, Liege Belgium
| | - Christelle Lecut
- Haematology Department, University of Liège Hospital, Liège, Belgium
| | - Joël Pincemaïl
- Division of Cardio-vascular and Thoracic Surgery, University of Liège Hospital, Liège, Belgium
| | - Jean-Paul Cheramy-Bien
- Division of Cardio-vascular and Thoracic Surgery, University of Liège Hospital, Liège, Belgium
| | - Jean-Olivier Defraigne
- Division of Cardio-vascular and Thoracic Surgery, University of Liège Hospital, Liège, Belgium
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ten Brinke MJ, Weerwind PW, Teerenstra S, Feron JCM, van der Meer W, Brouwer MHJ. Leukocyte removal efficiency of cell-washed and unwashed whole blood: an in vitro study. Perfusion 2016; 20:335-41. [PMID: 16363319 DOI: 10.1191/0267659105pf834oa] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Leukocyte filtration of the cardiopulmonary bypass (CPB) perfusate after cardiac surgery has evolved as an important technique to prevent effector functions mediated by activated leukocytes. However, little is known about the filtration efficiency. Therefore, an in vitro study was conducted to define the leukocyte removal rate of a transfusion leukocyte-depletion filter, using cell-washed and unwashed whole porcine blood. In addition, the influence of different cell-washing protocols on the elimination rate of blood cells (leukocytes and platelets) was investigated. Fresh, diluted, pooled, heparinized, porcine blood was processed using either a high-flow (HF, n-5) or quality-wash (QW, n-5) protocol on a continuous auto-transfusion system, or was left unprocessed (control n-5). Thereafter, all samples were filtered using a transfusion leukocyte-depletion filter. Blood samples for measurement of hematocrit, white blood cell count, including leukocyte differentiation and platelet count, were taken before and after filtration. To compare the experimental groups, the removal rate was presented as the fraction of leukocytes or platelets removed per plasma volume. Cell washing significantly altered the fraction of leukocytes removed per plasma volume when compared to unprocessed blood (2.07 and 2.36 in the HF and QW groups, respectively, versus 1.34 in the control group, p-0.008 for both). No statistically significant difference in leukocyte removal rate was observed between the different cell-washing protocols. The leukocyte differential count showed that, during all experiments, the neutrophils were removed most efficiently (99.7%). Overall, significantly more platelets were depleted after cell washing compared to the control group (1.47 and 1.60 in the HF and QW groups, respectively, versus 1.12 in the control group, p-0.008 and 0.032, respectively). Furthermore, the amount of blood that could be filtered using a single pass technique did not significantly differ between the experimental groups. However, a larger variation in the total amount of filtered blood was observed in the unprocessed group (5709/398 mL) compared to the cell-washed groups (3609/42 and 4309/97 mL in the HF and QW groups, respectively). In conclusion, blood processing with an auto-transfusion system significantly enhances the leukocyte and platelet removal efficiency of the transfusion leukocyte-depletion filter that was studied. In particular, neutrophils were efficiently removed.
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Affiliation(s)
- M J ten Brinke
- Department of Extra-Corporeal Circulation, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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Hall R. Identification of Inflammatory Mediators and Their Modulation by Strategies for the Management of the Systemic Inflammatory Response During Cardiac Surgery. J Cardiothorac Vasc Anesth 2013; 27:983-1033. [DOI: 10.1053/j.jvca.2012.09.013] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Indexed: 12/21/2022]
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Issitt R, Sheppard S. Dealing with pericardial suction blood and residual pump volume: a review of current practices in the UK. Perfusion 2010; 26:51-5. [PMID: 20798136 DOI: 10.1177/0267659110382686] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The pathological effects of pericardial suction blood (PSB) have been well described in numerous studies for many years; yet, despite this, there is no definitive answer to the question of how best to attenuate this pathology. More recently, large studies have shown that, whilst PSB contains many factors indicating its pathological potential, the direct re-infusion of PSB and residual pump volume (RPV) after cardiopulmonary bypass (CPB) potentially reduces the risk of transfusion and is no more harmful to the patient than the re-infusion of cell salvage-processed PSB after CPB.We conducted a telephone audit of UK perfusion units to determine if current protocols and practices reflected this.We found that there is a definite majority processing RPV with cell-saving devices, with many units defining their protocols as "surgeon dependent" whilst half immediately returned PSB to the systemic circulation whilst on CPB. The results of this national audit suggest that the issue of dealing with PSB and RPV is confused, heavily influenced by surgical and anaesthetic preference and lacking clear guidance and high quality evidence.
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Affiliation(s)
- Richard Issitt
- Perfusion Department, John Radcliffe Hospital, Oxford, UK.
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5
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Abstract
Cardiotomy suction is used for preservation of autologous blood during on-pump cardiac surgery at present. Controversially, the exclusion of cardiotomy suction in some types of operations (coronary artery bypass surgery) is not necessarily associated with an increased transfusion requirement. On the other hand, the use of cardiotomy suction causes an amplification of systemic inflammatory response and a resulting coagulopathy, as well as exacerbation of the microembolic load and hemolysis. This leads to a tendency towards increased blood loss, transfusion requirement and organ dysfunction. On the basis of these facts, it is appropriate to reconsider routine use of cardiotomy suction in on-pump coronary artery surgery.
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Affiliation(s)
- Vladimir Svitek
- Department of Anesthesiology, Resuscitation and Intensive Care of Charles University in Prague, Faculty of Medicine in Hradec Kralove, University Hospital in Hradec Kralove, Czech Republic,
| | - Vladimir Lonsky
- Department of Cardiac Surgery of Palacky University Faculty of Medicine and Dentistry and University Hospital in Olomouc, Czech Republic
| | - Faraz Anjum
- Department of Anesthesiology, Resuscitation and Intensive Care of Charles University in Prague, Faculty of Medicine in Hradec Kralove, University Hospital in Hradec Kralove, Czech Republic
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Skrabal CA, Khosravi A, Choi YH, Kaminski A, Westphal B, Steinhoff G, Liebold A. Pericardial suction blood separation attenuates inflammatory response and hemolysis after cardiopulmonary bypass. SCAND CARDIOVASC J 2009; 40:219-23. [PMID: 16914412 DOI: 10.1080/14017430600628201] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVES Retransfusion of pericardial suction blood (PSB) is critically considered under the aspect of the biocompatibility of the cardiopulmonary bypass (CPB). We investigated various indicators of inflammation and blood cell activation associated with CPB and re-transfusion of PSB during cardiac surgery. DESIGN Thirty-five patients undergoing elective coronary artery bypass grafting were prospectively randomized into two groups. In group A (n = 15, retransfusion group) the pericardial suction blood was continuously retransfused during CPB, in group B (n = 20, no-retransfusion group) the suction blood was separated. Parameters indicating the status of the inflammation and blood cell activation were analyzed before and at the end of CPB, latest after 90 minutes on CPB. RESULTS Patients' perioperative data did not differ between groups. The inflammatory markers C-reactive protein, PMN-Elastase and Interleukin-6 increased in both groups after CPB (p < 0.04) with significantly lower values in the no-retransfusion group (p < 0.02). Leukocytes and platelet activation markers beta-Thromboglobulin and soluble P-Selectin also experienced a significant elevation during observation time (p < 0.02) without any difference between the groups. Free hemoglobin and LDH tremendously increased during CPB with lower values in the no-retransfusion group. CONCLUSIONS Cardiotomy suction is a major cause of hemolysis and contributes significantly to the systemic inflammatory response.
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Affiliation(s)
- Christian A Skrabal
- Department of Cardiac Surgery, University of Rostock, Schillingallee 35, 18057, Rostock, Germany
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Takayama H, Soltow LO, Aldea GS. Differential Expression in Markers for Thrombin, Platelet Activation, and Inflammation in Cell Saver Versus Systemic Blood in Patients Undergoing On-Pump Coronary Artery Bypass Graft Surgery. J Cardiothorac Vasc Anesth 2007; 21:519-23. [PMID: 17678777 DOI: 10.1053/j.jvca.2007.01.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2006] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Elimination of cardiotomy suction increases reliance on cell-saver blood-conservation techniques. Reinfusion of processed cell-saver blood (PCSB) even without using cardiotomy field suction may contribute to thrombin, cytokines, platelet activators, and hemolytic factors measured systemically. DESIGN This study was designed as a prospective, unblinded observational study of patients undergoing first-time, nonemergent on-pump coronary artery bypass graft surgery. SETTING A university medical center. PARTICIPANTS Fourteen patients were enrolled after informed consent. INTERVENTIONS Arterial blood was sampled (1) before cardiopulmonary bypass, (2) immediately after bypass, and (3) 4 hours after bypass. PCSB, using the AutoLog (Medtronic, Inc, Minneapolis, MN), was sampled after bypass. MEASUREMENTS AND MAIN RESULTS Blood and PCSB levels of prothrombin fragments 1.2, beta-thromboglobulin, interleukin-6, interleukin-8, polymorphonuclear leukocyte-elastase, neuron-specific enolase, and S-100beta were assayed by using enzyme-linked immunosorbent assay. Paired comparisons were performed by using paired t tests. Compared with postbypass blood, processed cell-saver blood (prepatient infusion) had higher levels of polymorphonuclear leukocyte-elastase, interleukin-8, neuron-specific enolase, and S-100beta (p <or= 0.05). CONCLUSIONS Reinfusion of PCSB directly and independently contributes to systemic elevations in interleukin-8, polymorphonuclear elastase, neuron-specific enolase, and S-100beta, augmenting and perhaps accentuating the postoperative inflammatory response. Further evaluation and improvement in cell-salvaging technology and processing techniques are warranted.
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Affiliation(s)
- Hiroo Takayama
- Department of Surgery, Cardiothoracic Division, University of Washington School of Medicine, Seattle, WA 98195-3166, USA
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Ferraris VA, Ferraris SP, Saha SP, Hessel EA, Haan CK, Royston BD, Bridges CR, Higgins RSD, Despotis G, Brown JR, Spiess BD, Shore-Lesserson L, Stafford-Smith M, Mazer CD, Bennett-Guerrero E, Hill SE, Body S. Perioperative blood transfusion and blood conservation in cardiac surgery: the Society of Thoracic Surgeons and The Society of Cardiovascular Anesthesiologists clinical practice guideline. Ann Thorac Surg 2007; 83:S27-86. [PMID: 17462454 DOI: 10.1016/j.athoracsur.2007.02.099] [Citation(s) in RCA: 610] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2006] [Revised: 01/21/2007] [Accepted: 02/08/2007] [Indexed: 01/24/2023]
Abstract
BACKGROUND A minority of patients having cardiac procedures (15% to 20%) consume more than 80% of the blood products transfused at operation. Blood must be viewed as a scarce resource that carries risks and benefits. A careful review of available evidence can provide guidelines to allocate this valuable resource and improve patient outcomes. METHODS We reviewed all available published evidence related to blood conservation during cardiac operations, including randomized controlled trials, published observational information, and case reports. Conventional methods identified the level of evidence available for each of the blood conservation interventions. After considering the level of evidence, recommendations were made regarding each intervention using the American Heart Association/American College of Cardiology classification scheme. RESULTS Review of published reports identified a high-risk profile associated with increased postoperative blood transfusion. Six variables stand out as important indicators of risk: (1) advanced age, (2) low preoperative red blood cell volume (preoperative anemia or small body size), (3) preoperative antiplatelet or antithrombotic drugs, (4) reoperative or complex procedures, (5) emergency operations, and (6) noncardiac patient comorbidities. Careful review revealed preoperative and perioperative interventions that are likely to reduce bleeding and postoperative blood transfusion. Preoperative interventions that are likely to reduce blood transfusion include identification of high-risk patients who should receive all available preoperative and perioperative blood conservation interventions and limitation of antithrombotic drugs. Perioperative blood conservation interventions include use of antifibrinolytic drugs, selective use of off-pump coronary artery bypass graft surgery, routine use of a cell-saving device, and implementation of appropriate transfusion indications. An important intervention is application of a multimodality blood conservation program that is institution based, accepted by all health care providers, and that involves well thought out transfusion algorithms to guide transfusion decisions. CONCLUSIONS Based on available evidence, institution-specific protocols should screen for high-risk patients, as blood conservation interventions are likely to be most productive for this high-risk subset. Available evidence-based blood conservation techniques include (1) drugs that increase preoperative blood volume (eg, erythropoietin) or decrease postoperative bleeding (eg, antifibrinolytics), (2) devices that conserve blood (eg, intraoperative blood salvage and blood sparing interventions), (3) interventions that protect the patient's own blood from the stress of operation (eg, autologous predonation and normovolemic hemodilution), (4) consensus, institution-specific blood transfusion algorithms supplemented with point-of-care testing, and most importantly, (5) a multimodality approach to blood conservation combining all of the above.
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Abdala E, Baía CES, Mies S, Massarollo PCB, de Paula Cavalheiro N, Baía VRM, Inácio CAF, Sef HC, Barone AA. Bacterial translocation during liver transplantation: a randomized trial comparing conventional with venovenous bypass vs. piggyback methods. Liver Transpl 2007; 13:488-96. [PMID: 17436334 DOI: 10.1002/lt.21085] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The aim of this study was to evaluate the bacterial translocation in liver transplantation (LT), comparing the conventional and the piggyback methods. A total of 32 patients were randomized into the 2 groups. Samples of blood were collected from the radial artery, portal vein (PV) and hepatic vein (HV), in up to 120 minutes postreperfusion. The samples were sent for endotoxin level, as well as samples up to 2 minutes post-perfusion were sent to culture. Hepatic artery and PV blood flows were measured at postreperfusion collection times. The results analyzed were: endotoxin concentration, its quantity, and hepatic clearance. The statistical treatment consisted of analyzing each group's mean profile. The analysis for endotoxin concentration in the radial artery was the deviation related to presurgery measure, and in the PV the deviation related to preclamping (PC) measure. The overall mean level of endotoxin concentration was 0.99 EU/mL in the artery, 1.30 EU/mL in the PV, and 1.22 EU/mL in the HV. The deviation was significant in the portal (P = 0.0031), but not in the artery samples (P = 0.2092). We detected a significant quantity of endotoxin in the artery and in the portal and the HVs (P < 0.001). There was no difference between the 2 groups and no hepatic clearance of endotoxin was detected either (P = 0.1515). All the cultures were negative. In conclusion, the study detected a significant translocation of endotoxin, but not of bacteria. The study also detected the absence of endotoxin hepatic clearance in both the piggyback and the conventional methods without any difference between them.
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Affiliation(s)
- Edson Abdala
- Department of Infectious Diseases, University of São Paulo Medical School, São Paulo, Brazil.
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Allen ML, Hoschtitzky JA, Peters MJ, Elliott M, Goldman A, James I, Klein NJ. Interleukin-10 and its role in clinical immunoparalysis following pediatric cardiac surgery. Crit Care Med 2006; 34:2658-65. [PMID: 16932228 DOI: 10.1097/01.ccm.0000240243.28129.36] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE A systemic insult is associated with subsequent hyporesponsiveness to endotoxin (as measured by ex vivo tumor necrosis factor [TNF]-alpha production) and an increased risk of late nosocomial infection in some patients. When combined with low monocyte surface major histocompatibility complex class II expression, this state of altered host defense is now commonly referred to as immunoparalysis. This study was undertaken to delineate the relationship between observed levels of the anti-inflammatory cytokine interleukin-10, common genetic polymorphisms that influence these levels, and the occurrence and severity of endotoxin hyporesponsiveness in children following elective cardiac surgery requiring cardiopulmonary bypass. DESIGN A prospective observational clinical study. SETTING A tertiary pediatric cardiac center. PATIENTS Thirty-six infants and children <2 yrs of age undergoing elective cardiac surgery requiring cardiopulmonary bypass. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS We investigated the production of TNF-alpha, interleukin-6, interleukin-8, interleukin-1 receptor antagonist, and interleukin-10 in whole blood in response to lipopolysaccharide (Neisseria meningitides 10 ng/mL) in samples drawn before, during, and up to 48 hrs after surgery. Patients were genotyped for the -1082, -819, and -592 interleukin-10 promoter polymorphisms. Whole blood cytokine response to lipopolysaccharide was reduced postoperatively to </=50% of preoperative levels for all cytokines measured. Stimulated cytokine production was lowest in cases with the highest postoperative plasma interleukin-10 levels, which were in turn associated with the GCC haplotype. Those patients in whom the whole blood response to endotoxin was maintained (TNF-alpha >100 pg/mL) over the first 48 hrs were more likely to have an uncomplicated short stay (odds ratio 4.7, 95% confidence interval 1-22). CONCLUSIONS Immediately following cardiac surgery, many children become relatively refractory to lipopolysaccharide stimulation. This immunoparalysis appears to be related in part to high circulating levels of interleukin-10 and places these patients at increased risk of postoperative complications. Interleukin-10 genotype may be a risk factor for immunoparalysis.
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Affiliation(s)
- Meredith L Allen
- Critical Care Group-Portex Unit, Institute of Child Health, University College London, UK
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Shann KG, Likosky DS, Murkin JM, Baker RA, Baribeau YR, DeFoe GR, Dickinson TA, Gardner TJ, Grocott HP, O'Connor GT, Rosinski DJ, Sellke FW, Willcox TW. An evidence-based review of the practice of cardiopulmonary bypass in adults: A focus on neurologic injury, glycemic control, hemodilution, and the inflammatory response. J Thorac Cardiovasc Surg 2006; 132:283-90. [PMID: 16872951 DOI: 10.1016/j.jtcvs.2006.03.027] [Citation(s) in RCA: 136] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2005] [Revised: 01/10/2006] [Accepted: 03/13/2006] [Indexed: 01/04/2023]
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Westerberg M, Gäbel J, Bengtsson A, Sellgren J, Eidem O, Jeppsson A. Hemodynamic effects of cardiotomy suction blood. J Thorac Cardiovasc Surg 2006; 131:1352-7. [PMID: 16733169 DOI: 10.1016/j.jtcvs.2005.12.067] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2005] [Revised: 11/23/2005] [Accepted: 12/12/2005] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Cardiac surgery induces a systemic inflammatory activation, which in severe cases is associated with peripheral vasodilation and hypotension. Cardiotomy suction blood contains high levels of inflammatory mediators, but the effect of cardiotomy suction blood on the vasculture is unknown. We investigated the effect of cardiotomy suction blood on systemic vascular resistance in vivo and whether cell-saver processing of suction blood affects the vascular response. METHODS Twenty-five patients undergoing coronary surgery (mean age, 68 +/- 2 years; 80% men) were included in a prospective randomized study. The patients were randomized to retransfusion of cell-saver processed (n = 13) or cell-saver unprocessed (n = 12) suction blood during full cardiopulmonary bypass. Mean arterial blood pressure was continuously registered during retransfusion, and systemic vascular resistance was calculated. Plasma concentrations of tumor necrosis factor alpha, interleukin 6, and complement factor C3a were measured in suction blood. RESULTS Retransfusion of cardiotomy suction blood induced a transient reduction in systemic vascular resistance in all patients. The peak reduction was significantly less pronounced in the group receiving cell-saver processed blood (-12% +/- 2% vs -28% +/- 3%, P = .001). There was a significant correlation between tumor necrosis factor alpha concentration in retransfused cardiotomy suction blood and peak reduction of systemic vascular resistance (r = 0.60, P = .002). CONCLUSIONS The results suggest cardiotomy suction blood is vasoactive and might influence vascular resistance and blood pressure during cardiac surgery. The observed vasodilation is proportional to the inflammatory activation of suction blood and can be reduced by processing suction blood with a cell-saving device before retransfusion.
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Affiliation(s)
- Martin Westerberg
- Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
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Eisses MJ, Seidel K, Aldea GS, Chandler WL. Reducing Hemostatic Activation During Cardiopulmonary Bypass: A Combined Approach. Anesth Analg 2004; 98:1208-16, table of contents. [PMID: 15105189 DOI: 10.1213/01.ane.0000108489.88613.2c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
UNLABELLED Interventions such as heparin-coated circuits, epsilon-aminocaproic acid, and reduced shed blood reinfusion have shown mixed results when applied individually for limiting hemostatic activation during cardiopulmonary bypass (CPB). We compared coagulation and fibrinolytic activation during conventional CPB (control) (CTRL) using noncoated circuits, no antifibrinolytics, and open cardiotomy with a combined strategy (HAC) that used heparin-coated circuits, epsilon-aminocaproic acid, and closed cardiotomy. Blood samples were drawn before, during, and after CPB for primary coronary bypass grafting surgery from 9 CTRL patients and 10 HAC patients. Thrombin-antithrombin complex and fibrinopeptide A levels (markers of thrombin and fibrin generation) were reduced in the HAC versus CTRL group after 30 min of CPB (P < 0.05). Average tissue plasminogen activator (tPA) levels were significantly lower in the HAC group by 30 min on CPB (P < 0.05), resulting in preservation of plasminogen activator inhibitor (PAI)-1 during CPB (P < 0.05). D-Dimer, a measure of intravascular fibrin formation and removal, was reduced in the HAC group during and after CPB (P < 0.005). Overall, the combined strategy was associated with a reduction in CPB-induced increases in markers of thrombin generation, fibrin formation, tPA release, and fibrin degradation and better preservation of PAI-1. IMPLICATIONS A combined approach during cardiopulmonary bypass (CPB) that uses heparin-coated circuits, epsilon-aminocaproic acid, and limited reinfusion of shed pericardial blood is associated with reduced activation of the coagulation and fibrinolytic systems that typically occurs during conventional CPB.
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Affiliation(s)
- Michael J Eisses
- Department of Anesthesiology, University of Washington School of Medicine, Seattle, 98105, USA.
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Wan S, Yim APC, Ng CSH, Arifi AA. Systematic organ protection in coronary artery surgery with or without cardiopulmonary bypass. J Card Surg 2002; 17:529-35. [PMID: 12643464 DOI: 10.1046/j.1540-8191.2002.01010.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Coronary artery bypass grafting with cardiopulmonary bypass (CPB) is known to be associated with a systemic inflammatory response, which contributes to the development of postoperative complications including multiple organ dysfunction. Off-pump coronary surgery has been shown to attenuate the inflammatory injury compared to the conventional approach, thereby reducing the incidence of postoperative cardiopulmonary, renal, or neurological dysfunction. It is believed that off-pump experience may greatly impact on improving the outcome of coronary surgery in certain high-risk patients. Moreover, a better understanding of the underlying mechanism would also help to improve our current CPB management. Accumulating evidence to date indicates that a balance between pro- and antiinflammatory responses is crucial in limiting the extent of such systemic inflammatory injury following surgical myocardial revascularization.
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Affiliation(s)
- Song Wan
- Division of Cardiothoracic Surgery, Department of Surgery, The Chinese University of Hong Kong, Prince of Wales Hospital, People's Republic of China, Shatin, Hong Kong.
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16
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Abstract
Heparin-coated circuits have been subjected to vigorous testing, both experimentally and clinically, for the past decade. When the functions of heparin are preserved on the surface, the heparinized surface plays multiple roles in attenuating the systemic inflammatory response. These include the ability to attenuate contact activation, coagulation activation, complement activation and, directly or indirectly, platelet and leukocyte activation. The heparinized surface also renders the cardiopulmonary bypass (CPB) circuits hydrophilic and protein resistant and augments lipoprotein binding. The multifunctional nature of the heparinized surface contributes to the overall biocompatibility of the surface. Clinically, heparin-coated circuits become most effective in reducing systemic inflammatory response and in improving morbidity, mortality, and other patient outcome related parameters when material-independent blood activation is controlled or minimized through a global biocompatibility strategy. Techniques involved in the global biocompatibility strategy are readily available and are being effectively and safely practiced at several centers. With the global biocompatibility strategy, outstanding and reproducible results have been routinely achieved with conventional CPB techniques. Alternative revascularization procedures should equal or surpass conventional CPB, using best clinically proven strategies with respect to patient outcome and long-term graft patency.
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Affiliation(s)
- L C Hsu
- Edwards Lifesciences LLC, Irvine, California, USA.
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