1
|
Pabón-Carrasco M, Cáceres-Matos R, Martínez-Flores S, Luque-Oliveros M. The effectiveness of cell salvage in extracorporeal circulation surgeries in relation to use of health resources after use: A systematic review and meta-analysis. Heliyon 2024; 10:e30459. [PMID: 38720744 PMCID: PMC11077044 DOI: 10.1016/j.heliyon.2024.e30459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 04/19/2024] [Accepted: 04/26/2024] [Indexed: 05/12/2024] Open
Abstract
Background Alternatives to allogeneic blood transfusions are sought for resource management reasons and it is necessary to investigate the efficiency and efficacy on Cell Salvage use. The objective of this study is to analyze the effectiveness of the Cell Salvage system in addressing factors related to healthcare service utilization that may lead to increased healthcare expenditure. Methods A systematic review with meta-analysis was conducted through literature search in Medline, CINAHL, Scopus, Web of Science, and Cochrane Library. Inclusion criteria were studies in English/Spanish, without year restriction and Randomized Controlled Trials design, conducted in adults. Results Twenty-six studies were included in the systematic review, involving a total of 4781 patients (nexperimental group = 2365; ncontrol group = 2416). Significant differences favored the Cell Salvage system in units of transfused Red Blood Cells, in terms of units (p = 0.04; SMD = -0.42 95 % CI = -0.83 to -0.02) and individuals (p = 0.001; RR = 0.71, 95 % CI = 0.60 to 0.84) transfused. No significant differences were found in ICU (p = 0.93) and hospital stay duration (p = 0.21), number of reoperations (p = 0.68), and number of units and individuals transfused in terms of platelets (p > 0.05). Conclusions Cell Salvage use holds high potential for reducing healthcare costs and indirectly contributing to improving blood and blood product reserves within blood banks. Results obtained thus far do not provide definitive evidence regarding the duration of hospital stay, ICU stay, need for reoperation, or the quantity of transfused platelets. Therefore, it is recommended to increase the number of studies to assess the impact on the economic models of the Cell Salvage system.
Collapse
Affiliation(s)
- Manuel Pabón-Carrasco
- Faculty of Nursing, Physiotherapy and Podiatry, University of Sevilla, 41009, Sevilla, Spain
- “CTS-1054: Interventions and Health Care, Red Cross (ICSCRE)”, Spain
| | - Rocío Cáceres-Matos
- Faculty of Nursing, Physiotherapy and Podiatry, University of Sevilla, 41009, Sevilla, Spain
- Research Group CTS-1050: “Complex Care, Chronicity and Health Outcomes”, 6 Avenzoar ST, RI, 41009, Seville, Spain
| | - Salvador Martínez-Flores
- Cardiovascular and Thoracic Surgery Operating Theatre Unit of the Virgen Macarena University Hospital, Seville, Spain
| | - Manuel Luque-Oliveros
- Cardiovascular and Thoracic Surgery Operating Theatre Unit of the Virgen Macarena University Hospital, Seville, Spain
| |
Collapse
|
2
|
Abbasciano RG, Tomassini S, Roman MA, Rizzello A, Pathak S, Ramzi J, Lucarelli C, Layton G, Butt A, Lai F, Kumar T, Wozniak MJ, Murphy GJ. Effects of interventions targeting the systemic inflammatory response to cardiac surgery on clinical outcomes in adults. Cochrane Database Syst Rev 2023; 10:CD013584. [PMID: 37873947 PMCID: PMC10594589 DOI: 10.1002/14651858.cd013584.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
BACKGROUND Organ injury is a common and severe complication of cardiac surgery that contributes to the majority of deaths. There are no effective treatment or prevention strategies. It has been suggested that innate immune system activation may have a causal role in organ injury. A wide range of organ protection interventions targeting the innate immune response have been evaluated in randomised controlled trials (RCTs) in adult cardiac surgery patients, with inconsistent results in terms of effectiveness. OBJECTIVES The aim of the review was to summarise the results of RCTs of organ protection interventions targeting the innate immune response in adult cardiac surgery. The review considered whether the interventions had a treatment effect on inflammation, important clinical outcomes, or both. SEARCH METHODS CENTRAL, MEDLINE, Embase, conference proceedings and two trial registers were searched on October 2022 together with reference checking to identify additional studies. SELECTION CRITERIA RCTs comparing organ protection interventions targeting the innate immune response versus placebo or no treatment in adult patients undergoing cardiac surgery where the treatment effect on innate immune activation and on clinical outcomes of interest were reported. DATA COLLECTION AND ANALYSIS Searches, study selection, quality assessment, and data extractions were performed independently by pairs of authors. The primary inflammation outcomes were peak IL-6 and IL-8 concentrations in blood post-surgery. The primary clinical outcome was in-hospital or 30-day mortality. Treatment effects were expressed as risk ratios (RR) and standardised mean difference (SMD) with 95% confidence intervals (CI). Meta-analyses were performed using random effects models, and heterogeneity was assessed using I2. MAIN RESULTS A total of 40,255 participants from 328 RCTs were included in the synthesis. The effects of treatments on IL-6 (SMD -0.77, 95% CI -0.97 to -0.58, I2 = 92%) and IL-8 (SMD -0.92, 95% CI -1.20 to -0.65, I2 = 91%) were unclear due to heterogeneity. Heterogeneity for inflammation outcomes persisted across multiple sensitivity and moderator analyses. The pooled treatment effect for in-hospital or 30-day mortality was RR 0.78, 95% CI 0.68 to 0.91, I2 = 0%, suggesting a significant clinical benefit. There was little or no treatment effect on mortality when analyses were restricted to studies at low risk of bias. Post hoc analyses failed to demonstrate consistent treatment effects on inflammation and clinical outcomes. Levels of certainty for pooled treatment effects on the primary outcomes were very low. AUTHORS' CONCLUSIONS A systematic review of RCTs of organ protection interventions targeting innate immune system activation did not resolve uncertainty as to the effectiveness of these treatments, or the role of innate immunity in organ injury following cardiac surgery.
Collapse
Affiliation(s)
| | | | - Marius A Roman
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Angelica Rizzello
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Suraj Pathak
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Joussi Ramzi
- Leicester Medical School, University of Leicester, Leicester, UK
| | - Carla Lucarelli
- Department of Cardiac Surgery, University of Verona, Verona, Italy
| | - Georgia Layton
- University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Ayesha Butt
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Florence Lai
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Tracy Kumar
- Leicester Clinical Trials Unit, University of Leicester, Leicester, UK
| | - Marcin J Wozniak
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| | - Gavin J Murphy
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
| |
Collapse
|
3
|
Lloyd TD, Geneen LJ, Bernhardt K, McClune W, Fernquest SJ, Brown T, Dorée C, Brunskill SJ, Murphy MF, Palmer AJ. Cell salvage for minimising perioperative allogeneic blood transfusion in adults undergoing elective surgery. Cochrane Database Syst Rev 2023; 9:CD001888. [PMID: 37681564 PMCID: PMC10486190 DOI: 10.1002/14651858.cd001888.pub5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
BACKGROUND Concerns regarding the safety and availability of transfused donor blood have prompted research into a range of techniques to minimise allogeneic transfusion requirements. Cell salvage (CS) describes the recovery of blood from the surgical field, either during or after surgery, for reinfusion back to the patient. OBJECTIVES To examine the effectiveness of CS in minimising perioperative allogeneic red blood cell transfusion and on other clinical outcomes in adults undergoing elective or non-urgent surgery. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, three other databases and two clinical trials registers for randomised controlled trials (RCTs) and systematic reviews from 2009 (date of previous search) to 19 January 2023, without restrictions on language or publication status. SELECTION CRITERIA We included RCTs assessing the use of CS compared to no CS in adults (participants aged 18 or over, or using the study's definition of adult) undergoing elective (non-urgent) surgery only. DATA COLLECTION AND ANALYSIS We used standard methodological procedures expected by Cochrane. MAIN RESULTS We included 106 RCTs, incorporating data from 14,528 participants, reported in studies conducted in 24 countries. Results were published between 1978 and 2021. We analysed all data according to a single comparison: CS versus no CS. We separated analyses by type of surgery. The certainty of the evidence varied from very low certainty to high certainty. Reasons for downgrading the certainty included imprecision (small sample sizes below the optimal information size required to detect a difference, and wide confidence intervals), inconsistency (high statistical heterogeneity), and risk of bias (high risk from domains including sequence generation, blinding, and baseline imbalances). Aggregate analysis (all surgeries combined: primary outcome only) Very low-certainty evidence means we are uncertain if there is a reduction in the risk of allogeneic transfusion with CS (risk ratio (RR) 0.65, 95% confidence interval (CI) 0.59 to 0.72; 82 RCTs, 12,520 participants). Cancer: 2 RCTs (79 participants) Very low-certainty evidence means we are uncertain whether there is a difference for mortality, blood loss, infection, or deep vein thrombosis (DVT). There were no analysable data reported for the remaining outcomes. Cardiovascular (vascular): 6 RCTs (384 participants) Very low- to low-certainty evidence means we are uncertain whether there is a difference for most outcomes. No data were reported for major adverse cardiovascular events (MACE). Cardiovascular (no bypass): 6 RCTs (372 participants) Moderate-certainty evidence suggests there is probably a reduction in risk of allogeneic transfusion with CS (RR 0.82, 95% CI 0.69 to 0.97; 3 RCTs, 169 participants). Very low- to low-certainty evidence means we are uncertain whether there is a difference for volume transfused, blood loss, mortality, re-operation for bleeding, infection, wound complication, myocardial infarction (MI), stroke, and hospital length of stay (LOS). There were no analysable data reported for thrombosis, DVT, pulmonary embolism (PE), and MACE. Cardiovascular (with bypass): 29 RCTs (2936 participants) Low-certainty evidence suggests there may be a reduction in the risk of allogeneic transfusion with CS, and suggests there may be no difference in risk of infection and hospital LOS. Very low- to moderate-certainty evidence means we are uncertain whether there is a reduction in volume transfused because of CS, or if there is any difference for mortality, blood loss, re-operation for bleeding, wound complication, thrombosis, DVT, PE, MACE, and MI, and probably no difference in risk of stroke. Obstetrics: 1 RCT (1356 participants) High-certainty evidence shows there is no difference between groups for mean volume of allogeneic blood transfused (mean difference (MD) -0.02 units, 95% CI -0.08 to 0.04; 1 RCT, 1349 participants). Low-certainty evidence suggests there may be no difference for risk of allogeneic transfusion. There were no analysable data reported for the remaining outcomes. Orthopaedic (hip only): 17 RCTs (2055 participants) Very low-certainty evidence means we are uncertain if CS reduces the risk of allogeneic transfusion, and the volume transfused, or if there is any difference between groups for mortality, blood loss, re-operation for bleeding, infection, wound complication, prosthetic joint infection (PJI), thrombosis, DVT, PE, stroke, and hospital LOS. There were no analysable data reported for MACE and MI. Orthopaedic (knee only): 26 RCTs (2568 participants) Very low- to low-certainty evidence means we are uncertain if CS reduces the risk of allogeneic transfusion, and the volume transfused, and whether there is a difference for blood loss, re-operation for bleeding, infection, wound complication, PJI, DVT, PE, MI, MACE, stroke, and hospital LOS. There were no analysable data reported for mortality and thrombosis. Orthopaedic (spine only): 6 RCTs (404 participants) Moderate-certainty evidence suggests there is probably a reduction in the need for allogeneic transfusion with CS (RR 0.44, 95% CI 0.31 to 0.63; 3 RCTs, 194 participants). Very low- to moderate-certainty evidence suggests there may be no difference for volume transfused, blood loss, infection, wound complication, and PE. There were no analysable data reported for mortality, re-operation for bleeding, PJI, thrombosis, DVT, MACE, MI, stroke, and hospital LOS. Orthopaedic (mixed): 14 RCTs (4374 participants) Very low- to low-certainty evidence means we are uncertain if there is a reduction in the need for allogeneic transfusion with CS, or if there is any difference between groups for volume transfused, mortality, blood loss, infection, wound complication, PJI, thrombosis, DVT, MI, and hospital LOS. There were no analysable data reported for re-operation for bleeding, MACE, and stroke. AUTHORS' CONCLUSIONS In some types of elective surgery, cell salvage may reduce the need for and volume of allogeneic transfusion, alongside evidence of no difference in adverse events, when compared to no cell salvage. Further research is required to establish why other surgeries show no benefit from CS, through further analysis of the current evidence. More large RCTs in under-reported specialities are needed to expand the evidence base for exploring the impact of CS.
Collapse
Affiliation(s)
- Thomas D Lloyd
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Louise J Geneen
- Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, UK
| | | | | | - Scott J Fernquest
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Tamara Brown
- School of Health, Leeds Beckett University, Leeds, UK
| | - Carolyn Dorée
- Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, UK
| | - Susan J Brunskill
- Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, UK
| | - Michael F Murphy
- NHS Blood and Transplant, Oxford University Hospitals NHS Foundation Trust and University of Oxford, Oxford, UK
- Blood and Transplant Research Unit in Data Driven Transfusion, NIHR, Oxford, UK
| | - Antony Jr Palmer
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
- Blood and Transplant Research Unit in Data Driven Transfusion, NIHR, Oxford, UK
| |
Collapse
|
4
|
Blaudszun G, Butchart A, Klein AA. Blood conservation in cardiac surgery. Transfus Med 2017; 28:168-180. [DOI: 10.1111/tme.12475] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/27/2017] [Accepted: 08/28/2017] [Indexed: 12/30/2022]
Affiliation(s)
- G. Blaudszun
- Department of Anaesthesia and Intensive Care; Papworth Hospital NHS Foundation Trust; Cambridge UK
| | - A. Butchart
- Department of Anaesthesia and Intensive Care; Papworth Hospital NHS Foundation Trust; Cambridge UK
| | - A. A. Klein
- Department of Anaesthesia and Intensive Care; Papworth Hospital NHS Foundation Trust; Cambridge UK
| |
Collapse
|
5
|
Meybohm P, Choorapoikayil S, Wessels A, Herrmann E, Zacharowski K, Spahn DR. Washed cell salvage in surgical patients: A review and meta-analysis of prospective randomized trials under PRISMA. Medicine (Baltimore) 2016; 95:e4490. [PMID: 27495095 PMCID: PMC4979849 DOI: 10.1097/md.0000000000004490] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 06/20/2016] [Accepted: 07/12/2016] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Cell salvage is commonly used as part of a blood conservation strategy. However concerns among clinicians exist about the efficacy of transfusion of washed cell salvage. METHODS We performed a meta-analysis of randomized controlled trials in which patients, scheduled for all types of surgery, were randomized to washed cell salvage or to a control group with no cell salvage. Data were independently extracted, risk ratio (RR), and weighted mean differences (WMD) with 95% confidence intervals (CIs) were calculated. Data were pooled using a random effects model. The primary endpoint was the number of patients exposed to allogeneic red blood cell (RBC) transfusion. RESULTS Out of 1140 search results, a total of 47 trials were included. Overall, the use of washed cell salvage reduced the rate of exposure to allogeneic RBC transfusion by a relative 39% (RR = 0.61; 95% CI 0.57 to 0.65; P < 0.001), resulting in an average saving of 0.20 units of allogeneic RBC per patient (weighted mean differences [WMD] = -0.20; 95% CI -0.22 to -0.18; P < 0.001), reduced risk of infection by 28% (RR = 0.72; 95% CI 0.54 to 0.97; P = 0.03), reduced length of hospital stay by 2.31 days (WMD = -2.31; 95% CI -2.50 to -2.11; P < 0.001), but did not significantly affect risk of mortality (RR = 0.92; 95% CI 0.63 to 1.34; P = 0.66). No statistical difference could be observed in the number of patients exposed to re-operation, plasma, platelets, or rate of myocardial infarction and stroke. CONCLUSIONS Washed cell salvage is efficacious in reducing the need for allogeneic RBC transfusion and risk of infection in surgery.
Collapse
Affiliation(s)
- Patrick Meybohm
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt
| | - Suma Choorapoikayil
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt
| | - Anke Wessels
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt
| | - Eva Herrmann
- Institute for Anesthesiology, University and University Hospital Zurich, Zurich, Switzerland
| | - Kai Zacharowski
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt
| | - Donat R. Spahn
- Institute of Biostatistics and Mathematical Modelling, Goethe University Frankfurt, Germany
| |
Collapse
|
6
|
Vermeijden WJ, Hagenaars JAM, Scheeren TWL, de Vries AJ. Additional postoperative cell salvage of shed mediastinal blood in cardiac surgery does not reduce allogeneic blood transfusions: a cohort study. Perfusion 2015; 31:384-90. [DOI: 10.1177/0267659115613428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives: Does additional postoperative collection and processing of mediastinal shed blood with a cell salvage device reduce the number of allogeneic blood transfusions compared to intraoperative cell salvage alone? Methods: A single-centre cohort study in which adult patients with coronary artery bypass grafting or aortic valve replacement were allocated to either a C.A.T.S® group with intraoperative blood processing only or a CardioPat® group with both intra- and postoperative blood processing. The primary endpoint was the number of allogeneic blood transfusions during hospital admission. Results: The study included 99 patients; 50 in the C.A.T.S® and 49 in the CardioPat® group. There was no difference in the number of red blood cells (RBC) (C.A.T.S® group 43 units versus CardioPat® 50 units, p=0.74), fresh frozen plasma (C.A.T.S® 8 units versus CardioPat® 8 units, p=1.00) or platelets (C.A.T.S® 5 units versus CardioPat® 4 units, p=1.00) transfused during the hospital stay. Cardiac creatinine kinase (CK-MB) and troponin levels did not differ between the groups although a significant time effect (p<0.001) was present. Creatinine kinase (CK) levels were not different between the groups three hours after arrival in the intensive care unit (ICU) (CardioPat® group versus C.A.T.S® group, p=0.17). But, compared to the C.A.T.S® group on the first (350 [232-469] IU/L) and second postoperative days (325 [201-480] IU/L), the increase in CK levels was more in the CardioPat® group on the first (431 [286-642] IU/L, p=0.02) and second postoperative days (406 [239-760] IU/L, p=0.05), resulting in a difference between the groups (p=0.04) Conclusions: Postoperative cell salvage does not reduce transfusion requirements compared to intraoperative cell salvage alone, but results in elevated total CK levels that suggest haemolysis.
Collapse
Affiliation(s)
- Wytze J Vermeijden
- Department of Intensive Care and Thorax Centre Twente, Medisch Spectrum Twente, Enschede, the Netherlands
| | - Johanna AM Hagenaars
- Department of Anesthesiology, University Medical Centre Groningen, Groningen, the Netherlands
| | - Thomas WL Scheeren
- Department of Anesthesiology, University Medical Centre Groningen, Groningen, the Netherlands
| | - Adrianus J de Vries
- Department of Anesthesiology, University Medical Centre Groningen, Groningen, the Netherlands
| |
Collapse
|
7
|
Pedersen M, Kremke M, Hvas AM, Ravn HB. Autotransfusion of a restricted volume of shed mediastinal blood does not affect the haemostatic capacity in patients following cardiac surgery. Scandinavian Journal of Clinical and Laboratory Investigation 2015; 75:314-8. [PMID: 25919021 DOI: 10.3109/00365513.2014.992943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
UNLABELLED The aim was to investigate the haemostatic capacity after autotransfusion of shed mediastinal blood in patients following cardiac surgery. Fifteen cardiac surgery patients with a chest tube drainage ≥ 300 mL blood within the first 6 hours postoperatively were included. The haemostatic capacity was evaluated using whole blood thromboelastometry (ROTEM(®)), impedance aggregometry (Multiplate(®)) and conventional coagulation tests. Measurements were carried out in (1) mediastinal blood, and in blood samples obtained, (2) before autotransfusion, and (3) after autotransfusion of mediastinal blood. In shed mediastinal blood, ROTEM(®) analyses showed reduced clot firmness in the EXTEM (p < 0.001), INTEM (p < 0.001), and FIBTEM assay (p = 0.002). Platelet function and conventional coagulation parameters were significantly impaired (p < 0.001). However, ROTEM(®), platelet function and conventional coagulation tests remained unchanged after autotransfusion. CONCLUSION Shed mediastinal blood has a substantially reduced haemostatic capacity, but autotransfusion of an average of 350 mL did not affect the overall haemostatic capacity.
Collapse
Affiliation(s)
- Melissa Pedersen
- Department of Anaesthesia and Intensive Care, Aarhus University Hospital , Aarhus N , Denmark
| | | | | | | |
Collapse
|
8
|
Carless PA, Henry DA, Moxey AJ, O'Connell D, Brown T, Fergusson DA. Cell salvage for minimising perioperative allogeneic blood transfusion. Cochrane Database Syst Rev 2010; 2010:CD001888. [PMID: 20393932 PMCID: PMC4163967 DOI: 10.1002/14651858.cd001888.pub4] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND Concerns regarding the safety of transfused blood have prompted reconsideration of the use of allogeneic (from an unrelated donor) red blood cell (RBC) transfusion, and a range of techniques to minimise transfusion requirements. OBJECTIVES To examine the evidence for the efficacy of cell salvage in reducing allogeneic blood transfusion and the evidence for any effect on clinical outcomes. SEARCH STRATEGY We identified studies by searching CENTRAL (The Cochrane Library 2009, Issue 2), MEDLINE (1950 to June 2009), EMBASE (1980 to June 2009), the internet (to August 2009) and bibliographies of published articles. SELECTION CRITERIA Randomised controlled trials with a concurrent control group in which adult patients, scheduled for non-urgent surgery, were randomised to cell salvage (autotransfusion) or to a control group who did not receive the intervention. DATA COLLECTION AND ANALYSIS Data were independently extracted and the risk of bias assessed. Relative risks (RR) and weighted mean differences (WMD) with 95% confidence intervals (CIs) were calculated. Data were pooled using a random-effects model. The primary outcomes were the number of patients exposed to allogeneic red cell transfusion and the amount of blood transfused. Other clinical outcomes are detailed in the review. MAIN RESULTS A total of 75 trials were included. Overall, the use of cell salvage reduced the rate of exposure to allogeneic RBC transfusion by a relative 38% (RR 0.62; 95% CI 0.55 to 0.70). The absolute reduction in risk (ARR) of receiving an allogeneic RBC transfusion was 21% (95% CI 15% to 26%). In orthopaedic procedures the RR of exposure to RBC transfusion was 0.46 (95% CI 0.37 to 0.57) compared to 0.77 (95% CI 0.69 to 0.86) for cardiac procedures. The use of cell salvage resulted in an average saving of 0.68 units of allogeneic RBC per patient (WMD -0.68; 95% CI -0.88 to -0.49). Cell salvage did not appear to impact adversely on clinical outcomes. AUTHORS' CONCLUSIONS The results suggest cell salvage is efficacious in reducing the need for allogeneic red cell transfusion in adult elective cardiac and orthopaedic surgery. The use of cell salvage did not appear to impact adversely on clinical outcomes. However, the methodological quality of trials was poor. As the trials were unblinded and lacked adequate concealment of treatment allocation, transfusion practices may have been influenced by knowledge of the patients' treatment status potentially biasing the results in favour of cell salvage.
Collapse
Affiliation(s)
- Paul A Carless
- Faculty of Health, University of NewcastleDiscipline of Clinical PharmacologyLevel 5, Clinical Sciences Building, Newcastle Mater HospitalEdith Street, WaratahNewcastleNew South WalesAustralia2298
| | - David A Henry
- Institute of Clinical Evaluative Sciences2075 Bayview AvenueG1 06TorontoOntarioCanadaM4N 3M5
| | - Annette J Moxey
- Faculty of Health, University of NewcastleResearch Centre for Gender, Health & AgeingLevel 2, David Maddison BuildingUniversity DriveCallaghanNew South WalesAustralia2308
| | - Dianne O'Connell
- Cancer CouncilCancer Epidemiology Research UnitPO Box 572Kings CrossSydneyNSWAustralia1340
| | - Tamara Brown
- University of TeessideSchool of Health & Social Care, Centre for Food, Physical Activity and ObesityCenturia BuildingTees ValleyMiddlesbroughUKTS1 3BA
| | - Dean A Fergusson
- University of Ottawa Centre for Transfusion ResearchOttawa Health Research Institute501 Smyth RoadOttawaOntarioCanadaK1H 8L6
| | | |
Collapse
|
9
|
Carless PA, Henry DA, Moxey AJ, O'Connell D, Brown T, Fergusson DA. Cell salvage for minimising perioperative allogeneic blood transfusion. Cochrane Database Syst Rev 2010:CD001888. [PMID: 20238316 DOI: 10.1002/14651858.cd001888.pub3] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Concerns regarding the safety of transfused blood, have prompted reconsideration of the use of allogeneic (blood from an unrelated donor) red blood cell (RBC) transfusion, and a range of techniques to minimise transfusion requirements. OBJECTIVES To examine the evidence for the efficacy of cell salvage in reducing allogeneic blood transfusion and the evidence for any effect on clinical outcomes. SEARCH STRATEGY We identified studies by searching CENTRAL (The Cochrane Library 2009, Issue 2), MEDLINE (1950 to June 2009), EMBASE (1980 to June 2009), the Internet (to August 2009) and bibliographies of published articles. SELECTION CRITERIA Randomised controlled trials with a concurrent control group in which adult patients, scheduled for non-urgent surgery, were randomised to cell salvage (autotransfusion), or to a control group, who did not receive the intervention. DATA COLLECTION AND ANALYSIS Data were independently extracted and the risk of bias assessed. Relative risks (RR) and weighted mean differences (WMD) with 95% confidence intervals (CIs) were calculated. Data were pooled using a random effects model. The primary outcomes were the number of patients exposed to allogeneic red cell transfusion, and the amount of blood transfused. Other clinical outcomes are detailed in the review. MAIN RESULTS A total of 75 trials were included. Overall, the use of cell salvage reduced the rate of exposure to allogeneic RBC transfusion by a relative 38% (RR=0.62: 95% CI 0.55 to 0.70). The absolute reduction in risk (ARR) of receiving an allogeneic RBC transfusion was 21% (95% CI 15% to 26%). In orthopaedic procedures the RR of exposure to RBC transfusion was 0.46 (95% CI 0.37 to 0.57) compared to 0.77 (95% CI 0.69 to 0.86) for cardiac procedures. The use of cell salvage resulted in an average saving of 0.68 units of allogeneic RBC per patient (WMD=-0.68; 95% CI -0.88 to -0.49). Cell salvage did not appear to impact adversely on clinical outcomes. AUTHORS' CONCLUSIONS The results suggest cell salvage is efficacious in reducing the need for allogeneic red cell transfusion in adult elective cardiac and orthopaedic surgery. The use of cell salvage did not appear to impact adversely on clinical outcomes. However, the methodological quality of trials was poor. As the trials were unblinded and lacked adequate concealment of treatment allocation, transfusion practices may have been influenced by knowledge of the patients' treatment status potentially biasing the results in favour of cell salvage.
Collapse
Affiliation(s)
- Paul A Carless
- Discipline of Clinical Pharmacology, Faculty of Health, University of Newcastle, Level 5, Clinical Sciences Building, Newcastle Mater Hospital, Edith Street, Waratah, Newcastle, New South Wales, Australia, 2298
| | | | | | | | | | | |
Collapse
|