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Oh TK, Song IA. Perioperative Transfusion and Mortality for Cardiovascular Surgery: A Cohort Study Based on Population in Republic of Korea. J Clin Med 2024; 13:2328. [PMID: 38673602 PMCID: PMC11051365 DOI: 10.3390/jcm13082328] [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: 03/16/2024] [Revised: 04/12/2024] [Accepted: 04/14/2024] [Indexed: 04/28/2024] Open
Abstract
Objective:This study aimed to evaluate the rate of transfusion for cardiovascular surgeries between 2010 and 2019 in Republic of Korea and the association between blood transfusion and postoperative mortality. Methods: Data were extracted from the National Health Insurance Service database in Republic of Korea. This study includes adult patients who underwent cardiovascular surgery between 1 January 2010 and 31 December 2019. The endpoints were in-hospital mortality and the 1-year all-cause mortality. Results: The analysis included 62,794 cases, with transfusions used in 88.8% of cases. Multivariable logistic regression revealed that older age, comorbidities, hospital admission through the emergency room, aortic procedures (versus coronary artery bypass grafting), cardiopulmonary bypass, repeat procedures, and supportive therapies during the intensive care (extracorporeal membrane oxygenation and mechanical ventilation) were risk factors for blood transfusion. Female sex was associated with a lower risk of transfusion. Perioperative blood transfusion was associated with a 6.87-fold increased risk of in-hospital mortality (odds ratio [OR]: 6.87, 95% confidence interval [CI]: 3.95, 11.93; p < 0.001) and a 3.20-fold increased risk of 1-year all-cause mortality (OR: 3.35, 95% CI: 2.75, 3.93; p < 0.001). Conclusions: Blood transfusion is used at a high rate in cardiovascular surgeries, and it was associated with increases in the risk of in-hospital and 1-year all-cause mortality. However, these correlations should be viewed with caution as emergent phenomena rather than causative. Understanding factors associated with the need for blood transfusion can assist surgeons in predicting the outcomes of cardiovascular surgery and in tailoring procedures as needed to optimize outcomes.
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Affiliation(s)
- Tak-Kyu Oh
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea;
- Department of Anesthesiology and Pain Medicine, College of Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - In-Ae Song
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea;
- Department of Anesthesiology and Pain Medicine, College of Medicine, Seoul National University, Seoul 08826, Republic of Korea
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Yoshinaga K, Iizuka Y, Sanui M, Faraday N. Low-Volume Acute Normovolemic Hemodilution Does Not Reduce Allogeneic Red Blood Cell Transfusion in Cardiac Surgery in the Modern Era of Patient Blood Management: A Propensity Score-Matched Cohort Study. J Cardiothorac Vasc Anesth 2024; 38:394-402. [PMID: 38052691 DOI: 10.1053/j.jvca.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/24/2023] [Accepted: 11/01/2023] [Indexed: 12/07/2023]
Abstract
OBJECTIVES Patients undergoing cardiac surgery often require blood transfusions, which are associated with increased morbidity and mortality. Patient blood management (PBM) strategies, including acute normovolemic hemodilution (ANH), have been implemented to minimize allogeneic transfusion requirements. Older studies suggested that ANH is associated with reduced transfusions; however, its effectiveness in the modern era of PBM remains unclear. DESIGN This was a retrospective cohort study. SETTING The study was held at a single university hospital. PARTICIPANTS 542 patients who underwent elective cardiac surgery with cardiopulmonary bypass (CPB) using low-priming-volume circuits between January 2017 and March 2022. INTERVENTIONS Patients who received ANH were matched with those who did not receive ANH, using propensity scores. MEASUREMENTS AND MAIN RESULTS The primary outcome was the proportion of patients who received perioperative red blood cell (RBC) transfusion. Of the 542 eligible patients, 49 ANH cases were propensity-score matched to 97 controls. The median ANH volume was 450 mL (IQR, 400-800 mL). There was no significant difference in perioperative RBC transfusion rates between the 2 groups (24.5% in the ANH group vs 30.9% in the control group, p = 0.42). The odds ratio for perioperative RBC transfusion in the ANH group versus the control group was 0.72 (95% CI, 0.32-1.55, p = 0.42). CONCLUSIONS Low-volume ANH was not associated with a significant reduction in perioperative allogeneic RBC transfusion during cardiac surgery with CPB using low-priming-volume circuits. The benefits of low-volume ANH in reducing the requirement for RBC transfusion in the modern era of PBM may be smaller than reported previously.
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Affiliation(s)
- Koichi Yoshinaga
- Department of Anesthesiology and Critical Care Medicine, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Yusuke Iizuka
- Department of Anesthesiology and Critical Care Medicine, Jichi Medical University Saitama Medical Center, Saitama, Japan.
| | - Masamitsu Sanui
- Department of Anesthesiology and Critical Care Medicine, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Nauder Faraday
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
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Hsu PS, Chen JL, Sung SY, Tsai YT, Lin CY, Wu YF, Tsai CS. Inflammatory Biomarkers and Blood Physical Property Transformations Following On-Pump Coronary Artery Bypass Graft Surgery. J Pers Med 2023; 13:1434. [PMID: 37888046 PMCID: PMC10607935 DOI: 10.3390/jpm13101434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023] Open
Abstract
OBJECTIVE This study aimed to compare the hemorheological and inflammatory changes before and after coronary artery bypass graft (CABG) surgery, as factors such as hypothermia, hemodilution, transfusion, and other variables affect blood viscosity and inflammation during the procedure. METHODS A total of 25 patients who underwent CABG surgery were enrolled in this study. Whole blood was collected just before the CABG (D0), 2 days after surgery (D2), and 5 days after surgery (D5). The plasma viscosity (PV) and whole blood viscosity (WBV) were measured at shear rates ranging from 0.1 to 1000 s-1 using a rheometer, and the mean values were compared. Inflammatory markers were also assessed and analyzed in relation to the hemorheological changes. RESULTS Compared with the baseline values, the PV significantly increased after 5 days. WBV showed a significant increase on day 2 and after 5 days. The WBV and fibrinogen were significantly correlated on day 2 and day 5 but not before surgery. Inflammatory markers such as CRP, WBC, platelets, and fibrinogen also demonstrated notable changes in relation to the hemorheological alterations. CONCLUSIONS This study highlights the crucial finding that hyperviscosity, characterized by elevated PV and WBV, persists for almost one week after on-pump CABG surgery. Understanding the interplay between inflammation and hemorheological properties during the postoperative period is crucial for optimizing patient care. Future research should focus on exploring the underlying mechanisms and potential therapeutic interventions to mitigate the impact of inflammation on blood viscosity and improve patient outcomes following CABG surgery.
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Affiliation(s)
- Po-Shun Hsu
- Division of Cardiovascular Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Jia-Lin Chen
- Department of Anesthesia, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Shih-Ying Sung
- Division of Cardiovascular Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Yi-Ting Tsai
- Division of Cardiovascular Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Chih-Yuan Lin
- Division of Cardiovascular Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Yi-Fan Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110301, Taiwan
- Institute of Physics, Academia Sinica, Taipei 115201, Taiwan
| | - Chien-Sung Tsai
- Division of Cardiovascular Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
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Li ZQ, Zhang W, Guo Z, Du XW, Wang W. Risk factors of gastrointestinal bleeding after cardiopulmonary bypass in children: a retrospective study. Front Cardiovasc Med 2023; 10:1224872. [PMID: 37795489 PMCID: PMC10545956 DOI: 10.3389/fcvm.2023.1224872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 09/08/2023] [Indexed: 10/06/2023] Open
Abstract
Background During cardiac surgery that involved cardiopulmonary bypass (CPB) procedure, gastrointestinal (GI) system was known to be vulnerable to complications such as GI bleeding. Our study aimed to determine the incidence and risk factors associated with GI bleeding in children who received CPB as part of cardiac surgery. Methods This retrospective study enrolled patients aged <18 years who underwent cardiac surgery with CPB from 2013 to 2019 at Shanghai Children's Medical Center. The primary outcome was the incidence of postoperative GI bleeding in children, and the associated risk factors with postoperative GI bleeding episodes were evaluated. Results A total of 21,893 children who underwent cardiac surgery with CPB from 2013 to 2019 were included in this study. For age distribution, 636 (2.9%) were neonates, 10,984 (50.2%) were infants, and 10,273 (46.9%) were children. Among the 410 (1.9%) patients with GI bleeding, 345 (84.2%) survived to hospital discharge. Incidence of GI bleeding in neonates, infants and children were 22.6% (144/636), 2.0% (217/10,984) and 0.5% (49/10,273), respectively. The neonates (22.6%) group was associated with highest risk of GI bleeding. Patients with GI bleeding showed longer length of hospital stays (25.8 ± 15.9 vs. 12.5 ± 8.9, P < 0.001) and higher mortality (15.9% vs. 1.8%, P < 0.001). Multivariate logistic regression analysis showed that age, weight, complicated surgery, operation time, use of extracorporeal membrane oxygenation (ECMO), low cardiac output syndrome (LCOS), hepatic injury, artery lactate level, and postoperative platelet counts were significantly associated with increased risk of GI bleeding in children with congenital heart disease (CHD) pediatric patients that underwent CPB procedure during cardiac surgery. Conclusion The study results suggest that young age, low weight, long operation time, complicated surgery, use of ECMO, LCOS, hepatic injury, high arterial lactate level, and low postoperative platelet counts are independently associated with GI bleeding after CPB in children.
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Affiliation(s)
| | | | | | | | - Wei Wang
- Department of Cardiothoracic Surgery, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Condello I, Santarpino G, Nasso G, Moscarelli M, Speziale G, Lorusso R. 'Goal-directed extracorporeal circulation: transferring the knowledge and experience from daily cardiac surgery to extracorporeal membrane oxygenation'. Perfusion 2023; 38:449-454. [PMID: 34927474 DOI: 10.1177/02676591211063826] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Metabolism management plays an essential role in extracorporeal technologies. There are different metabolic management devices integrated to extracorporeal devices; the most commonly used and accepted metabolic target in adult patients is indexed oxygen delivery (280 mL/min/m2) and cardiac index (2.4 L/min/m2), which can be managed independently or according to other metabolic parameters. Extracorporeal membrane oxygenation (ECMO) is a temporary form of life support providing a prolonged biventricular circulatory and pulmonary support for patients experiencing both pulmonary and cardiac failure unresponsive to conventional therapy. The goal-directed perfusion initiative during cardiopulmonary bypass (CPB) reduced the incidence of acute kidney injury after cardiac surgery. On the basis of the available literature, the identified goals to achieve during CPB include maintenance of oxygen delivery > 300 mL O2/min/m2 and reduction in vasopressor use. ECMO and CPB are conceptually similar but differ in many aspects and finality; in particular, they differ in the scientific evidence for metabolic management nadirs. As for CPB, predictive target parameters have been found and consolidated, particularly in terms of acute renal injury and the prevention of anaerobic metabolism, while for ECMO management, a blurred path remains. In this context, we review the strategies for optimal goal-directed therapy during CPB and ECMO, trying to transfer the knowledge and experience from daily cardiac surgery to veno-arterial ECMO.
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Affiliation(s)
- Ignazio Condello
- Department of Cardiac Surgery, 46804Anthea Hospital, GVM Care & Research, Bari, Italy
| | - Giuseppe Santarpino
- Department of Cardiac Surgery, 46804Anthea Hospital, GVM Care & Research, Bari, Italy.,Department of Cardiac Surgery, Paracelsus Medical University, Nuremberg, Germany.,Cardiac Surgery Unit, Department of Experimental and Clinical Medicine-University "Magna Graecia" of Catanzaro, Bari, Italy
| | - Giuseppe Nasso
- Department of Cardiac Surgery, 46804Anthea Hospital, GVM Care & Research, Bari, Italy
| | - Marco Moscarelli
- Department of Cardiac Surgery, 46804Anthea Hospital, GVM Care & Research, Bari, Italy
| | - Giuseppe Speziale
- Department of Cardiac Surgery, 46804Anthea Hospital, GVM Care & Research, Bari, Italy
| | - Roberto Lorusso
- Cardio-Thoracic Surgery Department, Heart and Vascular Centre, 199236Maastricht University Medical Centre, Maastricht, The Netherlands.,Cardiovascular Research Institute Maastricht, Maastricht, The Netherlands
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Sanaiha Y, Hadaya J, Verma A, Shemin RJ, Madani M, Young N, Deuse T, Sun J, Benharash P. Morbidity and Mortality associated with Blood Transfusions in Elective Adult Cardiac Surgery. J Cardiothorac Vasc Anesth 2022:S1053-0770(22)00799-6. [PMID: 36462976 DOI: 10.1053/j.jvca.2022.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 11/04/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Perioperative transfusion thresholds have garnered increasing scrutiny as restrictive strategies have been shown to be noninferior. The study authors used data from a statewide academic collaborative to test the association between transfusion and 30-day mortality. DESIGN All adult patients undergoing coronary artery bypass grafting (CABG) and/or valve surgeries between 2013 and 2019 in the authors' Academic Cardiac Surgery Consortium were examined. The relationship between the number of overall packed red blood cell (pRBC) and coagulation product (CP) (fresh frozen plasma, cryoprecipitate, platelets) transfusions on 30-day mortality was evaluated. Multivariate regression was used to evaluate predictors of transfusion and study endpoints. Machine learning (ML) models also were developed to predict 30-day mortality and rank transfusion-related features by relative importance. SETTING At an Academic Cardiac Surgery Consortium of 5 institutions. PARTICIPANTS Patients ≥18 years old undergoing CABG and/or valve surgeries. MEASUREMENTS AND MAIN RESULTS Of the 7,762 patients (median hematocrit [HCT] 39%, IQR 35%-43%) who were included in the final study cohort, >40% were transfused at least 1 unit of pRBC or CP. In adjusted analyses, higher preoperative HCT was associated with reduced odds of mortality (adjusted odds ratio [aOR] 0.95, 95% CI 0.92-0.98), renal failure (aOR 0.95, 95% CI 0.92-0.98), and prolonged mechanical ventilation (aOR 0.97, 95% CI 0.95-0.99). In contrast, perioperative transfusions were associated with increased 30-day mortality after adjustment for preoperative HCT and other baseline features. The ML models were able to predict 30-day mortality with an area under the curve of 0.814-to-0.850, with perioperative transfusions displaying the highest feature importance. CONCLUSIONS The present analysis found increasing HCT to be associated with a lower incidence of mortality. The study authors also found a direct dose-response association between transfusions and all study endpoints examined.
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Moscarelli M, Condello I, Mancini A, Rao V, Fiore F, Bonifazi R, Bari ND, Nasso G, Speziale G. Retrograde autologous priming for minimally invasive mitral valve surgery. J Cardiothorac Vasc Anesth 2022; 36:3028-3035. [DOI: 10.1053/j.jvca.2022.03.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/05/2022] [Accepted: 03/27/2022] [Indexed: 11/11/2022]
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Bergbower EAS, Odonkor P. CON: Acute Normovolemic Hemodilution (ANH) Should Not Be Used as a Transfusion Strategy in Patients With Infective Endocarditis. J Cardiothorac Vasc Anesth 2022; 36:2815-2818. [DOI: 10.1053/j.jvca.2022.03.009] [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: 02/28/2022] [Accepted: 03/10/2022] [Indexed: 11/11/2022]
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Soliman R, Saad D, Abukhudair W, Abdekdayem S. The neurocognitive outcomes of hemodilution in adult patients undergoing coronary artery bypass grafting using cardiopulmonary bypass. Ann Card Anaesth 2022; 25:133-140. [PMID: 35417957 PMCID: PMC9244259 DOI: 10.4103/aca.aca_206_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective: The study aimed to evaluate the effect of mild and moderate hemodilution during CPB on the neurocognitive dysfunction in patients undergoing coronary artery bypass grafting. Design: A randomized clinical study. Setting: Cardiac center. Patients: 186 patients scheduled for cardiac surgery with cardiopulmonary bypass. Intervention: The patients were classified into 2 groups (each = 93), Mild hemodilution group: The hematocrit value was maintained >25% by transfusion of packed-red blood cells plus hemofiltration during CPB. Moderate hemodilution group: the hematocrit value was maintained within the range of 21-25%. Measurements: The monitors included the hemofiltrated volume, number of transfused packed red blood cells, and the incidence of postoperative cognitive dysfunction. Main Results: The hemofiltrated volume during CPB was too much higher with mild hemodilution compared to the moderate hemodilution (p = 0.001). The number of the transfused packed red blood cells during CPB was higher with mild hemodilution compared to the moderate hemodilution (p = 0.001), but after CPB, the number of the transfused packed red blood cells was lower with the mild hemodilution group than the moderate hemodilution (p = 0.001). The incidence of total postoperative neurological complications was significantly lower with the mild hemodilution group than moderate hemodilution (p = 0.033). The incidence of neurocognitive dysfunction was significantly lower with mild hemodilution group than moderate hemodilution (p = 0.042). Conclusions: The mild hemodilution was associated with a significant decrease in the incidence of neurocognitive dysfunction compared to moderate hemodilution in patients undergoing coronary artery bypass grafting. Also, the transfused packed red blood cells increased during CPB and decreased after CPB with the mild hemodilution than moderate hemodilution.
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Prevention of Ischemic Injury in Cardiac Surgery. Perioper Med (Lond) 2022. [DOI: 10.1016/b978-0-323-56724-4.00011-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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11
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Preservation of Renal Function. Perioper Med (Lond) 2022. [DOI: 10.1016/b978-0-323-56724-4.00017-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Moon BU, Clime L, Brassard D, Boutin A, Daoud J, Morton K, Veres T. An automated centrifugal microfluidic assay for whole blood fractionation and isolation of multiple cell populations using an aqueous two-phase system. LAB ON A CHIP 2021; 21:4060-4070. [PMID: 34604897 DOI: 10.1039/d1lc00680k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fractionating whole blood and separating its constituent components one from another is an essential step in many clinical applications. Currently blood sample handling and fractionation processes remain a predominantly manual task that require well-trained operators to produce reliable and reproducible results. Herein, we demonstrate an advanced on-chip whole human blood fractionation and cell isolation process combining (i) an aqueous two-phase system (ATPS) to create complex separation layers with (ii) a centrifugal microfluidic platform (PowerBlade) with active pneumatic pumping to control and automate the assay. We use a polyethylene glycol (PEG) and dextran (DEX) mixture as the two-phase density gradient media and our automated centrifugal microfluidic platform to fractionate blood samples. Different densities of precisely tuned PEG-DEX solutions were tested to match each of the cell types typically targeted during blood fractionation applications. By employing specially designed microfluidic devices, we demonstrate the automation of the following steps: loading of a whole blood sample on-chip, layering of the blood on the ATPS solution, blood fractionation, precise radial repositioning of the fractionated layers, and finally extraction of multiple, selected fractionated components. Fractionation of up to six distinct layers is shown: platelet-rich plasma, buffy coat, PEG, DEX with neutrophils, red blood cells (RBCs) and high density gradient media (HDGM). Furthermore, through controlled dispensing of HDGM to the fractionation chamber, we show that each of the fractionated layers can be repositioned radially, on-the-fly, without disturbing the interfaces, allowing precise transfer of target fractions and cell types into external vials via a chip-to-world interface. Cell counting analysis and cell viability studies showed equivalence to traditional, manual methods. An overall cell viability greater than 90% of extracted cells demonstrates that the proposed approach is suitable for cell isolation applications. This proof-of-principle demonstration highlights the utility of the proposed system for automated whole blood fractionation and isolation for blood cell applications. We anticipate that the proposed approach will be a useful tool for many clinical applications such as standard cell isolation procedures and other bioanalytical assays (e.g., circulating tumor cells, and cell and gene therapy).
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Affiliation(s)
- Byeong-Ui Moon
- National Research Council of Canada, 75 de Mortagne, Boucherville, Quebec, J4B 6Y4, Canada.
| | - Liviu Clime
- National Research Council of Canada, 75 de Mortagne, Boucherville, Quebec, J4B 6Y4, Canada.
| | - Daniel Brassard
- National Research Council of Canada, 75 de Mortagne, Boucherville, Quebec, J4B 6Y4, Canada.
| | - Alex Boutin
- National Research Council of Canada, 75 de Mortagne, Boucherville, Quebec, J4B 6Y4, Canada.
| | - Jamal Daoud
- National Research Council of Canada, 75 de Mortagne, Boucherville, Quebec, J4B 6Y4, Canada.
| | - Keith Morton
- National Research Council of Canada, 75 de Mortagne, Boucherville, Quebec, J4B 6Y4, Canada.
| | - Teodor Veres
- National Research Council of Canada, 75 de Mortagne, Boucherville, Quebec, J4B 6Y4, Canada.
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Hasegawa T, Iba Y, Naraoka S, Nakajima T, Hashimoto S, Murohashi T, Umeta R, Hosaka I, Ohkawa A, Yasuda N, Shibata T, Kawaharada N. Improvement of predicted hematocrit values after the initiation of cardiopulmonary bypass in cardiovascular surgery. J Artif Organs 2021; 25:117-124. [PMID: 34689296 DOI: 10.1007/s10047-021-01295-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 09/22/2021] [Indexed: 11/24/2022]
Abstract
Hematocrit (Hct) values after the initiation of cardiopulmonary bypass (CPB) must be maintained appropriately to avoid perioperative complications. Therefore, an accurate prediction is required. However, the standard prediction equation often results in actual values that are lower than the predicted values. This study aimed to clarify the limits of agreement (LOA) and bias of the prediction equations and investigate better the prediction equations. A retrospective study was performed on adult patients between April 2015 and December 2020. Study 1 included 158 patients, and Study 2 included 55 patients. The primary outcomes were the LOA and bias between the predicted and measured Hct values after the initiation of CPB, and two studies were conducted. In Study 1, total blood volume (TBV) was estimated, and the new blood volume index (BVI) was calculated. BVI was also evaluated for the overall value and gender differences. Therefore, the patient's background was compared by gender differences. In, Study 2 the conventional predicted equation (Eq. 1), the predicted equation using the new BVI (Eq. 2), and the predicted equation using the new BVI including physiological factors in the TBV equation (Eq. 3) were compared. In Study 1, BVI was 53 (44-67) mL/kg. In Study 2, bias ± LOA was - 2.5 ± 6.8% for Eq. 1, 0.1 ± 6.6% for Eq. 2, and 0.4 ± 6.2% for Eq. 3. The new equation is expected to predict the Hct value after the initiation of CPB with better LOA and bias than the conventional equation.
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Affiliation(s)
- Takeo Hasegawa
- Department of Clinical Engineering, Sapporo Medical University Hospital, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Yutaka Iba
- Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan.
| | - Shuichi Naraoka
- Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Tomohiro Nakajima
- Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Syuichi Hashimoto
- Department of Clinical Engineering, Sapporo Medical University Hospital, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Takao Murohashi
- Department of Clinical Engineering, Sapporo Medical University Hospital, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Riko Umeta
- Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Itaru Hosaka
- Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Akihito Ohkawa
- Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Naomi Yasuda
- Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Tsuyoshi Shibata
- Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan
| | - Nobuyoshi Kawaharada
- Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, West-16, South-1, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan.
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Gupta S, McEwen C, Basha A, Panchal P, Eqbal A, Wu N, Belley-Cote EP, Whitlock R. Retrograde autologous priming in cardiac surgery: a systematic review and meta-analysis. Eur J Cardiothorac Surg 2021; 60:1245-1256. [PMID: 34417595 DOI: 10.1093/ejcts/ezab334] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 06/01/2021] [Accepted: 06/13/2021] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES Guidelines recommend retrograde autologous priming (RAP) of the cardiopulmonary bypass circuit. However, the efficacy and safety of RAP is not well-established. We performed a systematic review and meta-analysis to determine the effects of RAP on transfusion requirements, morbidity and mortality. METHODS We searched Cochrane Central Register of Controlled Trials, Medline, ScienceDirect, Cumulative Index to Nursing and Allied Health Literature and Embase for randomized controlled trials (RCTs) and observational studies comparing RAP to no-RAP. We performed title and abstract review, full-text screening, data extraction and risk of bias assessment independently and in duplicate. We pooled data using a random effects model. RESULTS Twelve RCTs (n = 1206) and 17 observational studies (n = 3565) were included. Fewer patients required blood transfusions with RAP [RCTs; risk ratio 0.58 [95% confidence interval (CI): 0.51, 0.65], P < 0.001, and observational studies; risk ratio 0.65 [95% CI: 0.53, 0.80], P < 0.001]. The number of units transfused per patient was also lower among patients who underwent RAP (RCTs; mean difference -0.38 unit [95% CI: -0.72, -0.04], P = 0.03, and observational studies; mean difference -1.03 unit [95% CI: -1.76, -0.29], P < 0.006). CONCLUSIONS This meta-analysis supports the use of RAP as a blood conservation strategy since its use during cardiopulmonary bypass appears to reduce transfusion requirements.
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Affiliation(s)
- Saurabh Gupta
- Department of Surgery, Division of Cardiac Surgery, McMaster University, Hamilton, ON, Canada
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Charlotte McEwen
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Ameen Basha
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada
| | - Puru Panchal
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Adam Eqbal
- Department of Surgery, Division of Cardiac Surgery, McMaster University, Hamilton, ON, Canada
| | - Nicole Wu
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Emilie P Belley-Cote
- Population Health Research Institute, Hamilton, ON, Canada
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Richard Whitlock
- Department of Surgery, Division of Cardiac Surgery, McMaster University, Hamilton, ON, Canada
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
- Population Health Research Institute, Hamilton, ON, Canada
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15
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Permanyer E, Munoz-Guijosa C, Padró JM, Ginel A, Montiel J, Sánchez-Quesada JL, Vila L, Camacho M. Mini-extracorporeal circulation surgery produces less inflammation than off-pump coronary surgery. Eur J Cardiothorac Surg 2021; 57:496-503. [PMID: 31651944 DOI: 10.1093/ejcts/ezz291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 09/02/2019] [Accepted: 09/17/2019] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVES Both off-pump coronary artery bypass grafting surgery (OPCABG) and mini-extracorporeal circulation (MECC) have been associated with lower morbidity and mortality and less inflammation than conventional cardiopulmonary bypass. However, studies comparing the 2 techniques are scarce and the results are controversial. We compared the clinical outcomes and inflammatory response of low-risk patients undergoing coronary bypass grafting with MECC versus OPCABG. METHODS We conducted a prospective, randomized study in patients undergoing coronary heart surgery. Two hundred and thirty consecutive low-risk patients were randomly assigned to either receive OPCABG (n = 117) or MECC (n = 113). Clinical outcomes and postoperative biochemical results were analysed in both groups. We also analysed 19 circulating inflammatory markers in a subgroup of 40 patients at 4 perioperative time points. The area under the curve for each marker was calculated to monitor differences in the inflammatory response. RESULTS No significant differences were found between groups regarding perioperative clinical complications and no deaths occurred during the trial. Plasma levels in 9 of the 19 inflammatory markers were undetectable or showed no temporal variation, 3 were higher in the MECC group [interleukin (IL)-10, macrophage inflammatory protein-1β and epidermal growth factor] and 7 were higher in the OPCABG group (growth regulator oncogene, IL-6, IL-8, soluble CD40 ligand, monocyte chemoattractant protein-1, monocyte chemoattractant protein-3 and tumour necrosis factor-α). Differences in 2 proinflammatory cytokines, IL-6 and monocyte chemoattractant protein 1, between the 2 surgical procedures were statistically significant. CONCLUSIONS No clinical differences were observed between in low-risk patients undergoing MECC or OPCABG surgery, but OPCABG was associated with an increased release of proinflammatory cytokines compared with MECC. Studies in larger cohorts and in patients at higher risk are needed to confirm these findings. CLINICAL TRIAL REGISTRATION NUMBER NCT02118025.
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Affiliation(s)
- Eduard Permanyer
- Department of Cardiac Surgery, Quironsalud Teknon Heart Institute, Barcelona, Spain.,Department of Cardiac Surgery, Hospital de la Santa Creu i Sant Pau, Research Institute Hospital Sant Pau, IIB Sant Pau, Barcelona, Spain
| | | | - Josep-Maria Padró
- Department of Cardiac Surgery, Hospital de la Santa Creu i Sant Pau, Research Institute Hospital Sant Pau, IIB Sant Pau, Barcelona, Spain
| | - Antonino Ginel
- Department of Cardiac Surgery, Hospital de la Santa Creu i Sant Pau, Research Institute Hospital Sant Pau, IIB Sant Pau, Barcelona, Spain
| | - José Montiel
- Department of Cardiac Surgery, Hospital de la Santa Creu i Sant Pau, Research Institute Hospital Sant Pau, IIB Sant Pau, Barcelona, Spain
| | - José Luis Sánchez-Quesada
- Cardiovascular Research Group, CIBERDEM, Research Institute Hospital Sant Pau, IIB Sant Pau, Barcelona, Spain
| | - Luis Vila
- Laboratory of Angiology, Vascular Biology and Inflammation, Research Institute Hospital Sant Pau, IIB Sant Pau, Barcelona, Spain
| | - Mercedes Camacho
- Laboratory of Angiology, Vascular Biology and Inflammation, Research Institute Hospital Sant Pau, IIB Sant Pau, Barcelona, Spain.,Genomics of Complex Diseases, Research Institute Hospital Sant Pau, IIB Sant Pau, Barcelona, Spain
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16
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Phoon PHY, Hwang NC. Conventional Ultrafiltration-No More Role in Elective Adult Cardiac Surgery? J Cardiothorac Vasc Anesth 2021; 35:1319-1320. [PMID: 33546970 DOI: 10.1053/j.jvca.2021.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Priscilla Hui Yi Phoon
- Department of Anaesthesiology, Singapore General Hospital, Singapore; Department of Cardiothoracic Anaesthesia, National Heart Centre, Singapore
| | - Nian Chih Hwang
- Department of Anaesthesiology, Singapore General Hospital, Singapore; Department of Cardiothoracic Anaesthesia, National Heart Centre, Singapore.
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17
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Avgerinos DV, Payabyab EC, Rahouma M, Ruan Y, Gaudino M, Girardi LN. Elective proximal aortic surgery in patients with renal insufficiency. J Card Surg 2020; 35:2194-2200. [PMID: 32579778 DOI: 10.1111/jocs.14689] [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: 03/03/2020] [Revised: 05/15/2020] [Accepted: 05/18/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND To evaluate preoperative risk factors and postoperative outcomes in patients with preoperative renal insufficiency undergoing open surgical repair of the aortic root, ascending aorta, or aortic arch. METHODS Our institutional database was reviewed for all patients undergoing elective aortic root, ascending aorta, and aortic arch open repairs. Patients were separated into two groups based on renal function. Patients with preoperative renal insufficiency were compared to those with normal renal function. Regression analyses were used to identify independent predictors of short and long term postoperative outcomes. RESULTS The cohort consisted of 2140 patients, of which 55 had preoperative renal insufficiency (PRI). Patients with PRI were older and had worse cardiovascular risk profiles. On presentation, PRI patients were more likely to have lower ejection fraction. There was no difference in operative mortality between the two groups. The most frequent major postoperative complications among renal insufficiency patients were reoperation for bleeding (9.1%, P = .02). Logistic regression analysis indicated that PRI and left ventricular ejection fraction were independent predictors of major adverse events. Long-term survival was significantly reduced in preoperative renal insufficiency patients in the unmatched cohort. CONCLUSIONS Aortic patients with preoperative renal insufficiency have a higher risk profile of mortality. Renal insufficiency remains an independent predictor of adverse outcomes following aortic surgery and understanding this patient population can guide physicians to improve outcomes.
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Affiliation(s)
| | - Eden C Payabyab
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, New York
| | - Mohamed Rahouma
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, New York
| | - Yongle Ruan
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, New York
| | - Mario Gaudino
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, New York
| | - Leonard N Girardi
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, New York
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18
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Tan WS, Wang Y, Trinh QD, Preston MA, Kelly JD, Hrouda D, Kibel AS, Krasnow RE, Liu JJ, Chung BI, Chang SL, Mossanen M. Delayed blood transfusion is associated with mortality following radical cystectomy. Scand J Urol 2020; 54:290-296. [DOI: 10.1080/21681805.2020.1777195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Wei Shen Tan
- Division of Urological Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Division of Surgery & Interventional Science, University College London, London, UK
- Department of Urology, Northwick Park Hospital, London, UK
| | - Ye Wang
- Division of Urological Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Quoc-Dien Trinh
- Division of Urological Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Mark A. Preston
- Division of Urological Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - John D. Kelly
- Division of Surgery & Interventional Science, University College London, London, UK
| | - David Hrouda
- Department of Urology, Imperial College Healthcare NHS Trust, London, UK
| | - Adam S. Kibel
- Division of Urological Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Ross E. Krasnow
- Department of Urology, Med Star Washington Hospital Center, Washington, DC, USA
| | - Jen-Jane Liu
- Department of Urology, Oregon Health & Science University, Portland, OR, USA
| | - Benjamin I. Chung
- Department of Urology, Stanford University Medical Center, Stanford, CA, USA
| | - Steven L. Chang
- Division of Urological Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Matthew Mossanen
- Division of Urological Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
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19
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El-Essawi A, Bauer A, Gröger S, Hausmann H, Gehron J, Böning A, Harringer W. Minimalinvasive extrakorporale Zirkulation. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2020. [DOI: 10.1007/s00398-019-00349-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Williams RD, Foley NM, Vyas R, Huang S, Kertai MD, Balsara KR, Petracek MR, Shah AS, Absi TS. Predictors of Stroke After Minimally Invasive Mitral Valve Surgery Without the Cross-Clamp. Semin Thorac Cardiovasc Surg 2020; 32:47-56. [DOI: 10.1053/j.semtcvs.2019.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 11/11/2022]
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21
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Smith ME, Finks JF. Collaborative Quality Improvement. Health Serv Res 2020. [DOI: 10.1007/978-3-030-28357-5_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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22
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Friedrich C, Berndt R, Haneya A, Rusch R, Petzina R, Freitag-Wolf S, Cremer J, Hoffmann G. Sex-specific outcome after minimally invasive direct coronary artery bypass for single-vessel disease. Interact Cardiovasc Thorac Surg 2019; 30:380-387. [DOI: 10.1093/icvts/ivz279] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/02/2019] [Accepted: 10/18/2019] [Indexed: 12/25/2022] Open
Abstract
Abstract
OBJECTIVES
Female gender is reported as an independent risk factor for a poor outcome after coronary artery bypass grafting. We analysed the influence of gender on surgical outcome in patients with single-vessel disease undergoing minimally invasive direct coronary artery bypass (MIDCAB).
METHODS
From January 1998 to December 2016, a total of 607 consecutive patients with single-vessel disease (31.9% women) underwent MIDCAB at our institution. Major adverse cardiac and cerebrovascular events (MACCE) were recorded during a median follow-up period of 8.0 years. Survival time was estimated for all patients and after applying propensity score matching (138 women vs 138 men). Multivariable Cox regression analysis identified risk factors predicting a long-term mortality rate.
RESULTS
In women, a longer surgical time (125 vs 113 min; P < 0.001) and a higher transfusion rate were recorded (13.0% vs 5.1%; P = 0.001) with similar rates of in-hospital deaths (1.0% vs 0.5%; P = 0.60) and MACCE (1.5% vs 0.7%; P = 0.39). Survival and MACCE-free survival during the follow-up period did not differ significantly between genders (P = 1.0, P = 0.36). Survival and MACCE-free survival rates after 5 years were 94% and 90% in women compared to 91% and 86% in men. Propensity score matching demonstrated improved long-term survival rates in women (P = 0.029). Insulin-dependent diabetes mellitus, postoperative atrial fibrillation and prolonged intensive care unit stay were associated with long-term deaths for both genders, whereas obesity, former myocardial infarction and preoperative atrial fibrillation were significant risk factors in men.
CONCLUSIONS
Female patients showed no adverse outcomes after MIDCAB, although risk factors were gender-specific. Overall, MIDCAB demonstrated excellent short- and long-term results as a treatment for single-vessel disease in both genders.
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Affiliation(s)
- Christine Friedrich
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Rouven Berndt
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Assad Haneya
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein, Kiel, Germany
| | - René Rusch
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Rainer Petzina
- Department for Quality and Risk Management and Patient Safety, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Sandra Freitag-Wolf
- Institute of Medical Informatics and Statistics, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Joachim Cremer
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Grischa Hoffmann
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein, Kiel, Germany
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23
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Park JH, Lim JH, Lee KH, Jung HY, Choi JY, Cho JH, Kim CD, Kim YL, Jung H, Kim GJ, Park SH. Outcomes of open heart surgery in patients with end-stage renal disease. Kidney Res Clin Pract 2019; 38:399-406. [PMID: 31016958 PMCID: PMC6727895 DOI: 10.23876/j.krcp.18.0123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 03/15/2019] [Accepted: 03/19/2019] [Indexed: 11/04/2022] Open
Abstract
Background Cardiovascular diseases of chronic dialysis patients are often undertreated because of their higher surgical risk. This study aimed to assess mortality and morbidity after open heart surgery in chronic dialysis patients compared to those with normal renal function and identify risk factors for postoperative outcomes. Methods We retrospectively analyzed 2,432 patients who underwent open heart surgery from 2002 to 2017 and collected data from 116 patients (38 patients on dialysis and 78 age-, sex-, and diabetes mellitus status-matched control patients with normal kidney function). We assessed comorbidities, New York Heart Association (NYHA) class, laboratory data, surgical methods, and postoperative outcomes. Results The dialysis group had more comorbidities, higher NYHA classes, and greater need for urgent surgeries compared to the control group. They exhibited significantly higher postoperative mortality (18.4% vs. 2.6%, P = 0.005) and more overall complications (65.8% vs. 25.6%, P < 0.001). Dialysis itself significantly increased relative risk for inhospital mortality after adjustment. EuroSCORE II was not as useful as in the general population. Multivariate logistic regression analysis demonstrated that total (adjusted odds ratio [AOR], 10.7; P = 0.029) and in-hospital death risk (AOR, 14.7; P = 0.033), the durations of postoperative hospitalization (AOR, 4.6; P = 0.034), CRRT (AOR 36.8; P = 0.004), and ventilator use (AOR, 7.6; P = 0.022) were significantly increased in the dialysis group. Conclusion The dialysis group exhibited a higher risk for mortality and overcall complications after open heart surgery compared to the patients with normal renal function. Therefore, the benefit of surgical treatment must be balanced against potential risks.
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Affiliation(s)
- Jung Hwa Park
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jeong-Hoon Lim
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Kyung Hee Lee
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Hee-Yeon Jung
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Ji-Young Choi
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jang-Hee Cho
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Chan-Duck Kim
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Yong-Lim Kim
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Hanna Jung
- Department of Thoracic and Cardiovascular Surgery, Kyungpook National University School of Medicine, Daegu, Korea
| | - Gun Jik Kim
- Department of Thoracic and Cardiovascular Surgery, Kyungpook National University School of Medicine, Daegu, Korea
| | - Sun-Hee Park
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
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Al-Fares A, Pettenuzzo T, Del Sorbo L. Extracorporeal life support and systemic inflammation. Intensive Care Med Exp 2019; 7:46. [PMID: 31346840 PMCID: PMC6658641 DOI: 10.1186/s40635-019-0249-y] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 04/22/2019] [Indexed: 01/10/2023] Open
Abstract
Extracorporeal life support (ECLS) encompasses a wide range of extracorporeal modalities that offer short- and intermediate-term mechanical support to the failing heart or lung. Apart from the daily use of cardiopulmonary bypass (CPB) in the operating room, there has been a resurgence of interest and utilization of veno-arterial and veno-venous extracorporeal membrane oxygenation (VA- and VV-ECMO, respectively) and extracorporeal carbon dioxide removal (ECCO2R) in recent years. This might be attributed to the advancement in technology, nonetheless the morbidity and mortality associated with the clinical application of this technology is still significant. The initiation of ECLS triggers a systemic inflammatory response, which involves the activation of the coagulation cascade, complement systems, endothelial cells, leukocytes, and platelets, thus potentially contributing to morbidity and mortality. This is due to the release of cytokines and other biomarkers of inflammation, which have been associated with multiorgan dysfunction. On the other hand, ECLS can be utilized as a therapy to halt the inflammatory response associated with critical illness and ICU therapeutic intervention, such as facilitating ultra-protective mechanical ventilation. In addition to addressing the impact on outcome of the relationship between inflammation and ECLS, two different but complementary pathophysiological perspectives will be developed in this review: ECLS as the cause of inflammation and ECLS as the treatment of inflammation. This framework may be useful in guiding the development of novel therapeutic strategies to improve the outcome of critical illness.
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Affiliation(s)
- Abdulrahman Al-Fares
- Adult Critical Care Medicine Fellowship Program, University of Toronto, Toronto, Canada.,Al-Amiri Hospital, Ministry of Health, Kuwait City, Kuwait.,Interdepartmental Division of Critical Care Medicine, Toronto General Hospital, University of Toronto, Toronto, Canada
| | - Tommaso Pettenuzzo
- Adult Critical Care Medicine Fellowship Program, University of Toronto, Toronto, Canada.,Interdepartmental Division of Critical Care Medicine, Toronto General Hospital, University of Toronto, Toronto, Canada
| | - Lorenzo Del Sorbo
- Interdepartmental Division of Critical Care Medicine, Toronto General Hospital, University of Toronto, Toronto, Canada. .,Toronto General Hospital, 585 University Avenue, PMB 11-122, Toronto, Ontario, M5G 2 N2, Canada.
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25
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Muraki R, Hiraoka A, Nagata K, Nakajima K, Oshita T, Arimichi M, Chikazawa G, Yoshitaka H, Sakaguchi T. Novel method for estimating the total blood volume: the importance of adjustment using the ideal body weight and age for the accurate prediction of haemodilution during cardiopulmonary bypass. Interact Cardiovasc Thorac Surg 2019; 27:802-807. [PMID: 29873728 DOI: 10.1093/icvts/ivy173] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/24/2018] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVES Although total blood volume (TBV) is central to the estimation of the haemodilution rate during cardiopulmonary bypass (CPB), conventional formulas lack sufficient accuracy. The aim of this study was to establish a new formula using ideal body weight (BW) with adjustment for gender or age to estimate TBV for a more accurate prediction of the haemodilution rate during CPB. METHODS A total of 214 consecutive patients who underwent cardiac surgery with CPB were included in this study. TBV was retrospectively estimated using the following formulae: (1) Conventional TBV = actual BW × fixed 70 ml/kg, (2) gender-based modified TBV = ideal BW × 75 ml/kg (male) or 65 ml/kg (female) and (3) age-based modified TBV = ideal BW × 70 ml/kg (<65 years old) or 60 ml/kg (≥65 years old). The relationship between actual and predicted haemodilution rates calculated by these formulas was examined. RESULTS The actual haemodilution rate based on the haematocrit value was 24.4 ± 4.4%. There was no significant correlation between the actual and predicted haemodilution rates obtained by the conventional formula, whereas both modified formulae with the ideal BW showed a significant correlation. Furthermore, the age-based modified formula showed the highest correlation level (r = 0.45, P < 0.001) as well as a strong correlation between the actual and predicted postdilution haematocrit values (y = 0.903x + 3.385, R2 = 0.892). CONCLUSIONS The conventional formula is unable to predict the actual haemodilution rate accurately. Our new formula with a combination of the ideal BW and adjustment for age was shown to be useful for the accurate prediction of the haemodilution rate during CPB.
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Affiliation(s)
- Ryosuke Muraki
- Department of Clinical Engineering, The Sakakibara Heart Institute of Okayama, Okayama City, Okayama, Japan
| | - Arudo Hiraoka
- Department of Cardiovascular Surgery, The Sakakibara Heart Institute of Okayama, Okayama City, Okayama, Japan
| | - Kazuyuki Nagata
- Department of Clinical Engineering, The Sakakibara Heart Institute of Okayama, Okayama City, Okayama, Japan
| | - Kosuke Nakajima
- Department of Clinical Engineering, The Sakakibara Heart Institute of Okayama, Okayama City, Okayama, Japan
| | - Tomoya Oshita
- Department of Clinical Engineering, The Sakakibara Heart Institute of Okayama, Okayama City, Okayama, Japan
| | - Masahisa Arimichi
- Department of Clinical Engineering, The Sakakibara Heart Institute of Okayama, Okayama City, Okayama, Japan
| | - Genta Chikazawa
- Department of Cardiovascular Surgery, The Sakakibara Heart Institute of Okayama, Okayama City, Okayama, Japan
| | - Hidenori Yoshitaka
- Department of Cardiovascular Surgery, The Sakakibara Heart Institute of Okayama, Okayama City, Okayama, Japan
| | - Taichi Sakaguchi
- Department of Cardiovascular Surgery, The Sakakibara Heart Institute of Okayama, Okayama City, Okayama, Japan
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26
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Baranauskas T, Kaunienė A, Švagždienė M, Širvinskas E, Lenkutis T. The correlation of post-operative acute kidney injury and perioperative anaemia in patients undergoing cardiac surgery with cardiopulmonary bypass. Acta Med Litu 2019; 26:79-86. [PMID: 31281220 DOI: 10.6001/actamedica.v26i1.3959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Background and objective Acute kidney injury (AKI) following cardiac surgery with cardiopulmonary bypass (CPB) is polyethiological clinical syndrome. During CPB haemodilution develops, which is useful in reducing the risk of thrombosis; however, haemodilutional anaemia decreases oxygen transfer and provokes tissue hypoxia, which can lead to acute organ damage. The aim of the study was to find out the impact of perioperative anaemia on AKI after cardiac surgery with CPB. Materials and methods This prospective study included 58 adult patients undergoing elective cardiac surgery with CPB, without any preoperative chronic renal disease or any systemic autoimmune disease. Serum concentrations of NGAL had been tested before the surgery, 2 hours, 6 hours, and one day after the surgery. Perioperative anaemia was assessed according to the Ht value before the surgery, the Ht value during CPB, and immediately after the surgery. Results The rate of haemodilutional anaemia is 77.59% in this study. The average of serum NGAL concentration before CPB was 63.95 ± 33.25 ng/mL and it was significantly lower than the average concentration 2 hours after the surgery, 6 hours after the surgery and one day after the surgery (respectively 148.51 ± 62.39, 119.44 ± 55, 128.70 ± 59.04 ng/mL, p < 0.05). AKI developed in 46.55% of the patients. A significant positive reasonable correlation between the development of perioperative anaemia and AKI was determined (r = 0.50, p < 0.05). Conclusions Post-operative AKI after cardiac surgery with CPB has a moderate positive correlation with perioperative haemodilutional anaemia. A longer CPB time and aortic cross-clamping time were found to be the risk factors for the development of AKI.
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Affiliation(s)
| | - Agnė Kaunienė
- Department of Internal Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Milda Švagždienė
- Institute of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Edmundas Širvinskas
- Institute of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Tadas Lenkutis
- Clinic of Anaesthesiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
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Carmona García P, Mateo E, Zarragoikoetxea I, López Cantero M, Peña Borrás JJ, Vicente R. Can regional cerebral oxygen saturation guide red blood cell transfusion in high risk cardiac surgery? ACTA ACUST UNITED AC 2019; 66:355-361. [PMID: 31053417 DOI: 10.1016/j.redar.2019.03.013] [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: 01/07/2019] [Revised: 03/15/2019] [Accepted: 03/19/2019] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Cardiac surgery (CS) is associated with a significant use of blood products. The aim of this study was to evaluate the effect of red blood cells concentrates (RBC) transfusion on regional cerebral oxygen saturation (SrO2) in patients undergoing CS with additive EuroSCORE I > 6. MATERIAL AND METHODS This is a prospective descriptive study. Patients with additive EuroSCORE I > 6 undergoing CS with extracorporeal circulation were included in the study. The demographic values, perioperative complications, hospital/ICU length of stay (LOS), as well as the preinduction baseline SrO2values, the lowest SrO2 value during surgery, number of blood products transfused, hemoglobine (HB) and pre and postransfusional SrO2 values were recorded, and events of significant decrease in SrO2 below 20% of basal value or decrease below 50%. We considered responders those who had an increase post-transfusion SrO2 at least 20% of pre-transfusion value, an increase of standar deviation (7.9) or an increase up to basal SrO2. RESULTS Data from 57 patients were collected. The average additive EuroSCORE I was 7.4 (SD 2.6) and the EuroSCORE II was 6.1 (SD 7.4). 52% were male. 35.1% of patients received intraoperative transfusion of at least one unit of RBC. The overall mortality was 8.7% (N = 5). During surgery 29.8% of the overall sample presented a decrease of more than 20% of baseline SrO2 or a value lower than 50%. Patients with a significant decrease in SrO2 presented a higher rate of perioperative complications (P=0.04) and longer ICU-LOS 4.3 (SD 3.6) vs. 6.8 (SD 8.2) days (P=0.01) and hospital LOS 10.1 (SD 3.1) vs. 14.2 (SD 9.4) days (P=0.01). Pretransfusional HB was 7.4 (SD 0.8) mg/dl and postransfusional value was 8.4 (SD 0.8) (P =0.00). Pretransfusional SrO2 was 59 (SD 8.6) and increased non- significantly after RBC transfusion to 61.1 (SD 7.9) (P=0.1). Only 6 patients out of 21 could be considered responders. There were no significant differences in morbidity, mortality or LOS between responders and non-responders. DISCUSSION In our population a non statistically significant increase in SrO2 was observed after RBC transfusion. When considering responders few patients were identified by SrO2. In conclusion SrO2 might not be reliable triger to decide transfusion.
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Affiliation(s)
- P Carmona García
- Departamento de Anestesiología y Reanimación, Hospital General Universitario La Fe, Valencia, España.
| | - E Mateo
- Departamento de Anestesiología y Reanimación, Consorcio Hospital General Valencia, Valencia, España
| | - I Zarragoikoetxea
- Departamento de Anestesiología y Reanimación, Hospital General Universitario La Fe, Valencia, España
| | - M López Cantero
- Departamento de Anestesiología y Reanimación, Hospital General Universitario La Fe, Valencia, España
| | - J J Peña Borrás
- Departamento de Anestesiología y Reanimación, Consorcio Hospital General Valencia, Valencia, España
| | - R Vicente
- Departamento de Anestesiología y Reanimación, Hospital General Universitario La Fe, Valencia, España
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Chan CH, Ziyadi GM, Zuhdi MA. Adverse Outcomes of Perioperative Red Blood Cell Transfusions in Coronary Artery Bypass Grafting in Hospital Universiti Sains Malaysia. Malays J Med Sci 2019; 26:49-63. [PMID: 31303850 PMCID: PMC6613466 DOI: 10.21315/mjms2019.26.3.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 05/03/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Perioperative red blood cell (RBC) transfusion in coronary artery bypass grafting (CABG) has both benefits and harms. Our aim was to study the association between perioperative RBC transfusion and its adverse outcomes. METHODS This was a retrospective study of patients who underwent isolated CABG in Hospital Universiti Sains Malaysia, Kelantan, Malaysia, from 1 January 2013 until 31 December 2017. Data were collected from medical records, and comparisons were made between patients who received perioperative RBC transfusions and those who did not have adverse outcomes after CABG. RESULTS A total of 108 patients who underwent isolated CABG were included in our study, and 78 patients received perioperative RBC transfusions. Patients who received perioperative RBC transfusions compared to those who did not were significantly more likely to develop prolonged ventilatory support (21.8% versus 0%, P = 0.003), cardiac morbidity (14.1% versus 0%, P = 0.032), renal morbidity (28.2% versus 3.3%, P = 0.005) and serious infection (20.5% versus 3.3%, P = 0.037). With each unit of packed RBC transfusions, there was a significantly increased risk of prolonged ventilatory support (adjusted odds ratio [AOR] = 1.45; 95% confidence interval [CI] = 1.20-1.77; P < 0.001), cardiac morbidity (AOR =1.40; 95%CI = 1.01-1.79; P = 0.007), renal morbidity (AOR = 1.23; 95%CI = 1.03-1.45; P = 0.019) and serious infection (AOR = 1.31; 95%CI = 1.07-1.60; P = 0.009). CONCLUSION Perioperative RBC transfusion in isolated CABG patients is associated with increased risks of developing adverse events such as prolonged ventilatory support, cardiac morbidity, renal morbidity and serious infection.
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Affiliation(s)
- Choon Hua Chan
- Department of Surgery, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Ghazali Mohamad Ziyadi
- Unit of Cardiothoracic Surgery, Department of Surgery, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Mamat Ahmad Zuhdi
- Unit of Cardiothoracic Surgery, Department of Surgery, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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Greenhouse DG, Schwann TA, Engelman DT. Preoperative Anemic Patients Have Poor Outcomes; How Can We Optimize These Patients Prior to Surgery? Semin Thorac Cardiovasc Surg 2019; 31:164-165. [PMID: 30735713 DOI: 10.1053/j.semtcvs.2019.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 02/01/2019] [Indexed: 11/11/2022]
Affiliation(s)
- David G Greenhouse
- Department of Surgery, University of Massachusetts Medical School - Baystate, Springfield, Massachusetts
| | - Thomas A Schwann
- Department of Surgery, University of Massachusetts Medical School - Baystate, Springfield, Massachusetts
| | - Daniel T Engelman
- Department of Surgery, University of Massachusetts Medical School - Baystate, Springfield, Massachusetts.
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Jabagi H, Boodhwani M, Tran DT, Sun L, Wells G, Rubens FD. The Effect of Preoperative Anemia on Patients Undergoing Cardiac Surgery: A Propensity-Matched Analysis. Semin Thorac Cardiovasc Surg 2019; 31:157-163. [DOI: 10.1053/j.semtcvs.2018.09.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 09/21/2018] [Indexed: 11/11/2022]
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Dhir A, Tempe DK. Anemia and Patient Blood Management in Cardiac Surgery—Literature Review and Current Evidence. J Cardiothorac Vasc Anesth 2018; 32:2726-2742. [DOI: 10.1053/j.jvca.2017.11.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Indexed: 12/24/2022]
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Abstract
Perioperative acute kidney injury is associated with morbidity and mortality. Several definitions have been proposed, incorporating small changes of serum creatinine and urinary output reduction as diagnostic criteria. In the surgical patient, comorbidities, type and timing of surgery, and nephrotoxins are important. Patient comorbidities remain a significant risk factor. Urgent or emergent surgery and cardiac or transplantation procedures are associated with a higher risk of acute kidney injury. Nephrotoxic drugs, contrast dye, and diuretics worsen preexisting kidney dysfunction or act as an adjunctive insult to perioperative injury. This review includes preoperative, intraoperative, and postoperative issues that can be mitigated.
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Affiliation(s)
- Sheela Pai Cole
- Anesthesiology, Perioperative and Pain Medicine, Stanford University, 300 Pasteur Dr, H3580, Stanford, CA 94305, USA.
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Bignami E, Saglietti F, Di Lullo A. Mechanical ventilation management during cardiothoracic surgery: an open challenge. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:380. [PMID: 30460254 DOI: 10.21037/atm.2018.06.08] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Mechanical ventilation during surgery is a highly complex procedure, particularly in cardiothoracic surgery, where patients need to undergo substantial hemodynamic management, involving large fluid exchanges and pharmacological manipulation of vascular resistance, as well as direct manipulation of the lungs themselves. Cardiothoracic surgery is burdened by a high rate of postoperative pulmonary complication (PPC), comorbidity, and mortality. Recent trials have examined various techniques to preserve lung function, although consensus on best practice has yet to be reached. This might be due to the close relationship between the circulatory and pulmonary systems. The use of a technique designed to prevent pulmonary complication might negatively impact the hemodynamics of an already critical patient. Stress-induced lung injury can occur during surgery for various reasons, some of which have yet to be fully investigated. In cardiac surgery, this damage is mainly ascribed to two events: cardiopulmonary bypass (CPB) and sternotomy. In thoracic surgery, on the other hand, overdistention and permissive hyperoxia, both routinely used on one lung to compensate for the collapse of the other, are generally to blame for lung injury. In recent years "protective" ventilation strategies have been proposed to spare lung parenchyma from stress-induced damage. Despite the growing interest in protective ventilation techniques, there are still no clear international guidelines for mechanical ventilation in cardiothoracic surgery. However, some recent progress has been made, with positive clinical outcomes.
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Affiliation(s)
- Elena Bignami
- Anesthesiology, Critical Care and Pain Medicine Division, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Francesco Saglietti
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Antonio Di Lullo
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
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Potential biomarkers of tissue hypoxia during acute hemodilutional anemia in cardiac surgery: A prospective study to assess tissue hypoxia as a mechanism of organ injury. Can J Anaesth 2018; 65:901-913. [DOI: 10.1007/s12630-018-1140-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 03/15/2018] [Accepted: 03/16/2018] [Indexed: 02/08/2023] Open
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LaPar DJ, Hawkins RB, McMurry TL, Isbell JM, Rich JB, Speir AM, Quader MA, Kron IL, Kern JA, Ailawadi G. Preoperative anemia versus blood transfusion: Which is the culprit for worse outcomes in cardiac surgery? J Thorac Cardiovasc Surg 2018; 156:66-74.e2. [PMID: 29706372 DOI: 10.1016/j.jtcvs.2018.03.109] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 02/05/2018] [Accepted: 03/02/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND Reducing blood product utilization after cardiac surgery has become a focus of perioperative care as studies have suggested improved outcomes. The relative impact of preoperative anemia versus packed red blood cells (PRBC) transfusion on outcomes remains poorly understood, however. In this study, we investigated the relative association between preoperative hematocrit (Hct) level and PRBC transfusion on postoperative outcomes after coronary artery bypass grafting (CABG) surgery. METHODS Patient records for primary, isolated CABG operations performed between January 2007 and December 2017 at 19 cardiac surgery centers were evaluated. Hierarchical logistic regression modeling was used to estimate the relationship between baseline preoperative Hct level as well as PRBC transfusion and the likelihoods of postoperative mortality and morbidity, adjusted for baseline patient risk. Variable and model performance characteristics were compared to determine the relative strength of association between Hct level and PRBC transfusion and primary outcomes. RESULTS A total of 33,411 patients (median patient age, 65 years; interquartile range [IQR], 57-72 years; 26% females) were evaluated. The median preoperative Hct value was 39% (IQR, 36%-42%), and the mean Society of Thoracic Surgeons (STS) predicted risk of mortality was 1.8 ± 3.1%. Complications included PRBC transfusion in 31% of patients, renal failure in 2.8%, stroke in 1.3%, and operative mortality in 2.0%. A strong association was observed between preoperative Hct value and the likelihood of PRBC transfusion (P < .001). After risk adjustment, PRBC transfusion, but not Hct value, demonstrated stronger associations with postoperative mortality (odds ratio [OR], 4.3; P < .0001), renal failure (OR 6.3; P < .0001), and stroke (OR, 2.4; P < .0001). A 1-point increase in preoperative Hct was associated with decreased probabilities of mortality (OR, 0.97; P = .0001) and renal failure (OR, 0.94; P < .0001). The models with PRBC had superior predictive power, with a larger area under the curve, compared with Hct for all outcomes (all P < .01). Preoperative anemia was associated with up to a 4-fold increase in the probability of PRBC transfusion, a 3-fold increase in renal failure, and almost double the mortality. CONCLUSIONS PRBC transfusion appears to be more closely associated with risk-adjusted morbidity and mortality compared with preoperative Hct level alone, supporting efforts to reduce unnecessary PRBC transfusions. Preoperative anemia independently increases the risk of postoperative morbidity and mortality. These data suggest that preoperative Hct should be included in the STS risk calculators. Finally, efforts to optimize preoperative hematocrit should be investigated as a potentially modifiable risk factor for mortality and morbidity.
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Affiliation(s)
| | | | | | | | | | - Alan M Speir
- Inova Heart and Vascular Institute, Falls Church, Va
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Kingeter AJ, Kingeter MA, Shaw AD. Fluids and Organ Dysfunction: A Narrative Review of the Literature and Discussion of 5 Controversial Topics. J Cardiothorac Vasc Anesth 2018; 32:2054-2066. [PMID: 29685796 DOI: 10.1053/j.jvca.2018.03.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Indexed: 01/24/2023]
Abstract
Evidence-based clinical decision making is at the forefront of modern cardiothoracic anesthesia practice. Therefore, as a field, cardiac anesthesiologist should strive to ensure that the available evidence is of the highest possible quality. In this narrative review, 5 important topics that the authors believe require additional investigation in cardiothoracic anesthesia and critical care related to fluid therapy and organ dysfunction are outlined briefly. In particular, the authors believe that the areas of pulmonary artery catheter use, restrictive versus liberal transfusion strategies, cardiopulmonary bypass prime composition, colloid use in resuscitation and its effects on acute kidney injury, and management of acute kidney injury after cardiac surgery hold many unanswered questions and opportunities for continued improvement in the specialty of cardiac anesthesia. This article accompanies a presentation at the 46th Association of Cardiac Anesthesiologists Annual Meeting on October 22, 2017.
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Affiliation(s)
- Adam J Kingeter
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN.
| | - Meredith A Kingeter
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN
| | - Andrew D Shaw
- Department of Anesthesiology and Pain Medicine, University of Alberta, Edmonton, Alberta, Canada
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Nelson M, Green J, Spiess B, Kasirajan V, Nicolato P, Liu H, Meshkin RS. Measurement of Blood Loss in Cardiac Surgery: Still Too Much. Ann Thorac Surg 2018; 105:1176-1181. [PMID: 29506777 DOI: 10.1016/j.athoracsur.2017.11.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 11/06/2017] [Accepted: 11/06/2017] [Indexed: 10/17/2022]
Abstract
BACKGROUND Cardiac surgery is associated with a significant decrease in hematocrit. It is unclear whether that occurs from hemodilution, loss of red cells, or both. Hematocrit is a major determinant of transfusion decisions although transfusion is associated with increased morbidity and mortality. Physicians must determine whether this anemia is the result of hemodilution or red blood cell loss as the former would be treated with packed red blood cell transfusions and the latter by diuresis. We hypothesize that the decrease in hematocrit observed in cardiac surgery is due to hemodilution. METHODS Blood volume (BV), plasma volume (PV), and red blood cell volume (RBCV) were measured in 54 patients undergoing coronary artery bypass graft surgery, valve surgery, or coronary artery bypass graft/valve surgery. Measurements were made preoperatively, immediately postoperatively, and 2 hours after surgery utilizing a dilution tracer method and hematocrit measurements. RESULTS Preoperative average BV was 6,094 mL (SD 1,904 mL), RBCV was 2,024 mL (SD 720 mL), and PV was 4,070 mL (SD 1,339 mL). Postoperative average BV was 4,834 mL (SD 1,432 mL), RBCV 1,226 mL (SD 527 mL), and PV 3,607 mL (SD 993 mL). Blood volume decreased 18% (p < 0.0001), RBCV decreased 38% (p < 0.001), and PV decreased 8% (p < 0.012). There were no significant changes between postoperative values and those 2 hours later in the cardiac surgery intensive care unit. CONCLUSIONS Decreases in hematocrit observed in cardiac surgery patients are due to significant red blood cell losses and not to hemodilution. Red blood cell losses averaged 38%. Plasma volume also decreased.
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Affiliation(s)
- Mark Nelson
- Department of Anesthesiology, Division of Cardiothoracic Anesthesiology, Virginia Commonwealth University, Richmond, Virginia.
| | - Jeffrey Green
- Department of Anesthesiology, Division of Cardiothoracic Anesthesiology, Virginia Commonwealth University, Richmond, Virginia
| | - Bruce Spiess
- Department of Anesthesiology, Division of Cardiothoracic Anesthesiology, Virginia Commonwealth University, Richmond, Virginia
| | - Vigneshwar Kasirajan
- Department of Surgery, Division of Cardiothoracic Surgery, Virginia Commonwealth University, Richmond, Virginia
| | - Patricia Nicolato
- Department of Surgery, Division of Cardiothoracic Surgery, Virginia Commonwealth University, Richmond, Virginia
| | - Hangcheng Liu
- Department of Biostatistics, Virginia Commonwealth University, Richmond, Virginia
| | - Ryan S Meshkin
- Department of Biology, Virginia Commonwealth University, Richmond, Virginia
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Boer C, Meesters MI, Milojevic M, Benedetto U, Bolliger D, von Heymann C, Jeppsson A, Koster A, Osnabrugge RL, Ranucci M, Ravn HB, Vonk AB, Wahba A, Pagano D. 2017 EACTS/EACTA Guidelines on patient blood management for adult cardiac surgery. J Cardiothorac Vasc Anesth 2018; 32:88-120. [DOI: 10.1053/j.jvca.2017.06.026] [Citation(s) in RCA: 203] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Indexed: 01/28/2023]
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Zeroual N, Samarani G, Gallais J, Culas G, Saour M, Mourad M, Gaudard P, Colson PH. ScvO2
changes after red-blood-cell transfusion for anaemia in cardiothoracic and vascular ICU patients: an observational study. Vox Sang 2017; 113:136-142. [DOI: 10.1111/vox.12610] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 09/25/2017] [Accepted: 09/28/2017] [Indexed: 02/05/2023]
Affiliation(s)
- N. Zeroual
- Département d'anesthésie réanimation Arnaud de Villeneuve; Centre Hospitalier Régional et Universitaire; Montpellier France
| | - G. Samarani
- Département d'anesthésie réanimation Arnaud de Villeneuve; Centre Hospitalier Régional et Universitaire; Montpellier France
| | - J. Gallais
- Département d'anesthésie réanimation Arnaud de Villeneuve; Centre Hospitalier Régional et Universitaire; Montpellier France
| | - G. Culas
- Département d'anesthésie réanimation Arnaud de Villeneuve; Centre Hospitalier Régional et Universitaire; Montpellier France
| | - M. Saour
- Département d'anesthésie réanimation Arnaud de Villeneuve; Centre Hospitalier Régional et Universitaire; Montpellier France
| | - M. Mourad
- Département d'anesthésie réanimation Arnaud de Villeneuve; Centre Hospitalier Régional et Universitaire; Montpellier France
| | - P. Gaudard
- Département d'anesthésie réanimation Arnaud de Villeneuve; Centre Hospitalier Régional et Universitaire; Montpellier France
- PhyMedExp; INSERM U1046; University of Montpellier; Montpellier France
| | - P. H. Colson
- Département d'anesthésie réanimation Arnaud de Villeneuve; Centre Hospitalier Régional et Universitaire; Montpellier France
- Institut de Génomique Fonctionnelle Endocrinology Department; CNRS UMR 5203; INSERM U1191; University of Montpellier; Montpellier France
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Aortic valve replacement in small patients. Asian J Surg 2017; 41:578-584. [PMID: 29031428 DOI: 10.1016/j.asjsur.2017.08.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/18/2017] [Accepted: 08/28/2017] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES Asians are smaller than Europeans and North Americans, but aortic valve replacement (AVR) in small patients has not been examined. We aimed to compare short- and mid-term outcomes of AVR between small and non-small patients. METHODS We retrospectively divided 173 patients who underwent AVR into small (S, n = 95) and non-small (NS, n = 78) groups according to body surface area (≤1.6 in men, ≤1.5 in women) and analyzed differences in baseline characteristics, procedural and post-procedural variables, and survival. RESULTS Mean age differed significantly between the S and NS groups (71.9 ± 11.2 vs. 66.2 ± 9.8 years), as did the proportion of women (60.0% vs. 24.4%). Implanted valves (19.6 ± 1.6 mm vs. 20.7 ± 1.7 mm) were significantly smaller and more bioprosthetic valves (57.9% vs. 41.0%) were used in the S group. Effective orifice area index and the rate of moderate and severe patient-prosthesis mismatch were not significantly different. No significant intergroup differences were found in hospitalization duration, 30-day mortality, survival rates, or valve related complications. CONCLUSIONS Small patients were older and the proportion of women was higher. The implanted aortic valves were smaller and more were biological prostheses. However, mortality rate did not differ and short- and mid-term outcomes were safe and favorable.
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Pagano D, Milojevic M, Meesters MI, Benedetto U, Bolliger D, von Heymann C, Jeppsson A, Koster A, Osnabrugge RL, Ranucci M, Ravn HB, Vonk ABA, Wahba A, Boer C. 2017 EACTS/EACTA Guidelines on patient blood management for adult cardiac surgery. Eur J Cardiothorac Surg 2017; 53:79-111. [DOI: 10.1093/ejcts/ezx325] [Citation(s) in RCA: 192] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Murphy GJ, Mumford AD, Rogers CA, Wordsworth S, Stokes EA, Verheyden V, Kumar T, Harris J, Clayton G, Ellis L, Plummer Z, Dott W, Serraino F, Wozniak M, Morris T, Nath M, Sterne JA, Angelini GD, Reeves BC. Diagnostic and therapeutic medical devices for safer blood management in cardiac surgery: systematic reviews, observational studies and randomised controlled trials. PROGRAMME GRANTS FOR APPLIED RESEARCH 2017. [DOI: 10.3310/pgfar05170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BackgroundAnaemia, coagulopathic bleeding and transfusion are strongly associated with organ failure, sepsis and death following cardiac surgery.ObjectiveTo evaluate the clinical effectiveness and cost-effectiveness of medical devices used as diagnostic and therapeutic tools for the management of anaemia and bleeding in cardiac surgery.Methods and resultsWorkstream 1 – in the COagulation and Platelet laboratory Testing in Cardiac surgery (COPTIC) study we demonstrated that risk assessment using baseline clinical factors predicted bleeding with a high degree of accuracy. The results from point-of-care (POC) platelet aggregometry or viscoelastometry tests or an expanded range of laboratory reference tests for coagulopathy did not improve predictive accuracy beyond that achieved with the clinical risk score alone. The routine use of POC tests was not cost-effective. A systematic review concluded that POC-based algorithms are not clinically effective. We developed two new clinical risk prediction scores for transfusion and bleeding that are available as e-calculators. Workstream 2 – in the PAtient-SPecific Oxygen monitoring to Reduce blood Transfusion during heart surgery (PASPORT) trial and a systematic review we demonstrated that personalised near-infrared spectroscopy-based algorithms for the optimisation of tissue oxygenation, or as indicators for red cell transfusion, were neither clinically effective nor cost-effective. Workstream 3 – in the REDWASH trial we failed to demonstrate a reduction in inflammation or organ injury in recipients of mechanically washed red cells compared with standard (unwashed) red cells.LimitationsExisting studies evaluating the predictive accuracy or effectiveness of POC tests of coagulopathy or near-infrared spectroscopy were at high risk of bias. Interventions that alter red cell transfusion exposure, a common surrogate outcome in most trials, were not found to be clinically effective.ConclusionsA systematic assessment of devices in clinical use as blood management adjuncts in cardiac surgery did not demonstrate clinical effectiveness or cost-effectiveness. The contribution of anaemia and coagulopathy to adverse clinical outcomes following cardiac surgery remains poorly understood. Further research to define the pathogenesis of these conditions may lead to more accurate diagnoses, more effective treatments and potentially improved clinical outcomes.Study registrationCurrent Controlled Trials ISRCTN20778544 (COPTIC study) and PROSPERO CRD42016033831 (systematic review) (workstream 1); Current Controlled Trials ISRCTN23557269 (PASPORT trial) and PROSPERO CRD4201502769 (systematic review) (workstream 2); and Current Controlled Trials ISRCTN27076315 (REDWASH trial) (workstream 3).FundingThis project was funded by the National Institute for Health Research (NIHR) Programme Grants for Applied Research programme and will be published in full inProgramme Grants for Applied Research; Vol. 5, No. 17. See the NIHR Journals Library website for further project information.
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Affiliation(s)
- Gavin J Murphy
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Leicester, UK
| | - Andrew D Mumford
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Chris A Rogers
- Clinical Trials and Evaluation Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Sarah Wordsworth
- Health Economics Research Centre, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Elizabeth A Stokes
- Health Economics Research Centre, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Veerle Verheyden
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Leicester, UK
| | - Tracy Kumar
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Leicester, UK
| | - Jessica Harris
- Clinical Trials and Evaluation Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Gemma Clayton
- Clinical Trials and Evaluation Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Lucy Ellis
- Clinical Trials and Evaluation Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Zoe Plummer
- Clinical Trials and Evaluation Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - William Dott
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Leicester, UK
| | - Filiberto Serraino
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Leicester, UK
| | - Marcin Wozniak
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Leicester, UK
| | - Tom Morris
- Leicester Clinical Trials Unit, University of Leicester, Leicester, UK
| | - Mintu Nath
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Leicester, UK
| | - Jonathan A Sterne
- School of Social and Community Medicine, University of Bristol, Bristol, UK
| | - Gianni D Angelini
- Bristol Heart Institute, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Barnaby C Reeves
- Clinical Trials and Evaluation Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
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43
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Chang E, Gatling JW, Bode S, Herrmann PC, Bull BS, Applegate RL. Extreme Plasma Dilution Decreases Heparin and Protamine Cardiopulmonary Bypass Requirements: A Case Report on a Jehovah's Witness Patient. ACTA ACUST UNITED AC 2017; 8:291-293. [PMID: 28328588 DOI: 10.1213/xaa.0000000000000493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The primary focus of cardiopulmonary bypass management in Jehovah's Witness patients is the need to conserve blood. A consequence of these strategies inevitably results in hemodilution that is frequently extreme enough to dilute clotting factors and potentially impair coagulation. The purpose of this case report is to demonstrate that a hemodiluted patient requires less heparin to sustain anticoagulation and less protamine to reverse heparin at cardiopulmonary bypass termination. Patient harm may ensue unless the effects of extreme hemodilution are recognized.
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Affiliation(s)
- Emilie Chang
- From the *Department of Anesthesiology, Loma Linda University School of Medicine, Loma Linda, California; and †Department of Pathology & Human Anatomy, Loma Linda University School of Medicine, Loma Linda, California
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44
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Abstract
Heart surgery patients have a high prevalence of anemia. Its etiology is multifactorial, and iron deficiency is one of the most common correctable causes. Anemia is an independent risk factor for postsurgical morbidity and mortality. It also predisposes patients to a greater need for transfusions, which increases the associated complications and the use of resources. The etiological diagnosis of anemia is no different from that of other surgical procedures, but the time available for correcting it before surgery is shorter. Studies have been conducted on therapeutic regimens with iron deficiency replenishment with total dose and erythropoiesis-stimulating agents, which enable the rapid correction of anemia and reduce transfusion requirements. There is considerable variability in terms of dosage, adverse effects, administration time and routes, drug combinations and results. New studies are needed to investigate the most ideal regimens for correcting anemia in these patients.
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Affiliation(s)
- G J Yanes Vidal
- Servicio de Anestesiología y Reanimación, Hospital Universitario Virgen del Rocío, Sevilla, España.
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45
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Neugarten J, Sandilya S, Singh B, Golestaneh L. Sex and the Risk of AKI Following Cardio-thoracic Surgery: A Meta-Analysis. Clin J Am Soc Nephrol 2016; 11:2113-2122. [PMID: 27797892 PMCID: PMC5142065 DOI: 10.2215/cjn.03340316] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 08/16/2016] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND OBJECTIVES Being a woman is a well established risk factor for the development of cardiothoracic surgery-associated AKI. In striking contrast, women are less likely to develop AKI associated with noncardiac surgical procedures than men. In an attempt to ascertain why being a woman might be protective for ischemic AKI after general surgery but deleterious in patients undergoing cardiothoracic surgery, we examined cardiothoracic surgery-associated AKI in greater detail. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS We performed a systematic review and meta-analysis of cardiothoracic surgery-associated AKI studies published between January of 1978 and December of 2015 to further explore the relationship between sex and cardiothoracic surgery-associated AKI. RESULTS Sixty-four studies were identified that provided sex-specific data regarding the incidence of cardiothoracic surgery-associated AKI among 1,057,412 subjects. Using univariate analysis, women were more likely than men to develop AKI postoperatively (odds ratio, 1.21; 95% confidence interval, 1.09 to 1.33; P<0.001). However, when the analysis was restricted to the 120,464 subjects reported in 29 studies that used the Acute Kidney Injury Network criteria, the RIFLE criteria, or the Kidney Disease Improving Global Outcomes criteria to define AKI, there was no significant sex-related difference in risk. Seventeen studies used multivariate analysis to assess risk factors for cardiothoracic surgery-associated AKI and provided sex-specific odd ratios. Among the 1,587,181 individuals included in these studies, the risk of developing cardiothoracic surgery-associated AKI was not significantly associated with sex (odds ratio, 1.04; 95% confidence interval, 0.92 to 1.19; P=0.51). However, when the analysis was restricted to the 5106 subjects reported in four studies that used the Acute Kidney Injury Network criteria to define AKI, the risk of developing AKI was significantly lower in women compared with in men (odds ratio, 0.75; 95% confidence interval, 0.65 to 0.87; P<0.001). CONCLUSIONS Our systematic review and meta-analysis contradict the generally held consensus that being a woman is an independent risk factor for the development of cardiothoracic surgery-associated AKI.
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Affiliation(s)
- Joel Neugarten
- Nephrology Division, Department of Medicine, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York
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46
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Millar JE, Fanning JP, McDonald CI, McAuley DF, Fraser JF. The inflammatory response to extracorporeal membrane oxygenation (ECMO): a review of the pathophysiology. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:387. [PMID: 27890016 PMCID: PMC5125043 DOI: 10.1186/s13054-016-1570-4] [Citation(s) in RCA: 420] [Impact Index Per Article: 52.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Extracorporeal membrane oxygenation (ECMO) is a technology capable of providing short-term mechanical support to the heart, lungs or both. Over the last decade, the number of centres offering ECMO has grown rapidly. At the same time, the indications for its use have also been broadened. In part, this trend has been supported by advances in circuit design and in cannulation techniques. Despite the widespread adoption of extracorporeal life support techniques, the use of ECMO remains associated with significant morbidity and mortality. A complication witnessed during ECMO is the inflammatory response to extracorporeal circulation. This reaction shares similarities with the systemic inflammatory response syndrome (SIRS) and has been well-documented in relation to cardiopulmonary bypass. The exposure of a patient’s blood to the non-endothelialised surface of the ECMO circuit results in the widespread activation of the innate immune system; if unchecked this may result in inflammation and organ injury. Here, we review the pathophysiology of the inflammatory response to ECMO, highlighting the complex interactions between arms of the innate immune response, the endothelium and coagulation. An understanding of the processes involved may guide the design of therapies and strategies aimed at ameliorating inflammation during ECMO. Likewise, an appreciation of the potentially deleterious inflammatory effects of ECMO may assist those weighing the risks and benefits of therapy.
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Affiliation(s)
- Jonathan E Millar
- Critical Care Research Group, University of Queensland, Brisbane, Australia. .,Critical Care Research Group, The Prince Charles Hospital, Rode Road, Chermside, Queensland, 4032, Australia.
| | - Jonathon P Fanning
- Critical Care Research Group, University of Queensland, Brisbane, Australia
| | - Charles I McDonald
- Critical Care Research Group, University of Queensland, Brisbane, Australia
| | - Daniel F McAuley
- Wellcome-Wolfson Centre for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - John F Fraser
- Critical Care Research Group, University of Queensland, Brisbane, Australia
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47
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Robertson CA, Gourlay T. Development of a diagnostic sensor for measuring blood cell concentrations during haemoconcentration. Perfusion 2016; 32:126-132. [PMID: 27591743 PMCID: PMC5305045 DOI: 10.1177/0267659116667806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: HemoSep® is a commercial ultrafiltration and haemoconcentration device for the concentration of residual bypass blood following surgery. This technology is capable of reducing blood loss in cardiac and other types of “clean site” procedures, including paediatric surgery. Clinical feedback suggested that the device would be enhanced by including a sensor technology capable of discerning the concentration level of the processed blood product. We sought to develop a novel sensor that can, using light absorption, give an accurate estimate of packed cell volume (PCV). Materials and methods: A sensor-housing unit was 3D printed and the factors influencing the sensor’s effectiveness – supply voltage, sensitivity and emitter intensity - were optimised. We developed a smart system, using comparator circuitry capable of visually informing the user when adequate PCV levels (⩾35%) are attained by HemoSep® blood processing, which ultimately indicates that the blood is ready for autotransfusion. Results: Our data demonstrated that the device was capable of identifying blood concentration at and beyond the 35% PCV level. The device was found to be 100% accurate at identifying concentration levels of 35% from a starting level of 20%. Discussion: The sensory capability was integrated into HemoSep’s® current device and is designed to enhance the user’s clinical experience and to optimise the benefits of HemoSep® therapy. The present study focused on laboratory studies using bovine blood. Further studies are now planned in the clinical setting to confirm the efficacy of the device.
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Affiliation(s)
- Craig A Robertson
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK
| | - Terence Gourlay
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK
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48
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Abstract
There remains controversy as to when patients undergoing cardiac surgery should receive a transfusion and whether a low hematocrit and its treatment with a transfusion of red cells influences outcome. The data related to this controversy are reviewed. Although the risk of known viral transmission is currently low, stored red cells do not function normally, and each unit contains activated inflammatory cells and mediators. These changes cause limited oxygen release, impaired microcirculatory flow, and immune suppression. A number of studies have observed decreased survival associated with transfusions in trauma, coronary artery bypass grafting, and intensive care unit patients. Studies that show an adverse outcome associated with low hematocrit are not definitive, because they fail to distinguish between the impact of low hematocrit per se and the possible adverse effects of transfusion, for what the low hematocrit may simply be a surrogate. The observation that a low hematocrit is associated with an adverse outcome does not necessarily prove that “treatment” of the anemia with a red cell transfusion will improve the outcome. Stored platelets contain a highly activated mixture of platelets with storage lesions and inflammatory mediators. Two retrospective post hoc multifactorial analyses suggest that platelet transfusions are associated with substantial increased morbidity and mortality. Clearly, large prospective studies are required to define the proper trigger for blood product transfusion to balance the adverse effects of anemia and platelet deficiency or dysfunction with the adverse effects of transfusion of blood products on morbidity and mortality associated with cardiac surgery and anesthesia.
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Affiliation(s)
- Bruce D Spiess
- Department of Anesthesiology and the Reanimation Engineering Shock Center, Virginia Commonwealth University Medical Center, Richmond, VA 23298-0695, USA.
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49
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Nugent WC. Building and Supporting Sustainable Improvement in Cardiac Surgery: The Northern New England Experience. Semin Cardiothorac Vasc Anesth 2016; 9:115-8. [PMID: 15920634 DOI: 10.1177/108925320500900202] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Northern New England Cardiovascular Disease Study Group (NNECDSG) was formed as a regional clinical database that would allow clinicians to track outcomes after cardiac interventions. The purpose of the NNECDSG would be to use its database and organizational structure to seek best practices and disseminate information aimed at improving results for patients undergoing cardiovascular interventions. Since 1987, this voluntary regional collaborative of clinicians, hospital administrators, and health care research personnel has tracked consecutive cardiovascular interventions performed throughout Northern New England and reported its findings to the clinicians. Collaboration between NNECDSG institutions has led to progressive refinements in the clinical database, institutional site visits, efforts to understand and standardize ideal processes of care, risk-stratification tools to aid in decision making, and most recently, tools to track and report on appropriateness of interventions based on national criteria. As a result of these efforts, mortality rates after coronary bypass graft surgery have steadily declined and the variation in mortality rates between institutions has disappeared.
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Affiliation(s)
- William C Nugent
- Section of Cardiothoracic Surgery, Darthmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA.
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50
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Shander A, Moskowitz D, Rijhwani TS. The Safety and Efficacy of “Bloodless” Cardiac Surgery. Semin Cardiothorac Vasc Anesth 2016; 9:53-63. [PMID: 15735844 DOI: 10.1177/108925320500900106] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Nearly 20% of blood transfusions in the United States are associated with cardiac surgery. Despite the many blood conservation techniques that are available, safe, and efficacious for patients undergoing cardiac surgery, many of these operations continue to be associated with significant amounts of blood transfusion. Although surgical bleeding after cardiopulmonary bypass is a common problem as reflected by the substantial use of blood products, it is the individual physician and institutional behavior that have been identified as reasons for transfusion and not necessarily patient comorbidity or blood loss. Transfusion rates in cardiac surgery remain high despite major advances in perioperative blood conservation, with large variations among individual centers. The adoption of available blood conservation techniques, either alone or in combination in patients undergoing cardiac surgery, could result in an estimated 75% reduction of unnecessary transfusions. The success of previously reported blood conservations programs in cardiac surgery should call for a reevaluation of allogeneic transfusion practices in patients undergoing cardiac surgery. By applying the numerous reported blood conservation strategies for the management of patients presenting for cardiac surgery, we can preserve our dwindling blood resources and help alleviate some of the direct costs of blood as well as the indirect costs of treating noninfectious and infectious complications of transfusion.
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Affiliation(s)
- Aryeh Shander
- Critical Care Medicine, Pain Management and Hyperbaric Medicine, Englewood Hospital and Medical Center, Englewood, NJ 07361, USA.
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