Cost-effectiveness and Cost-utility of Liberal vs Restrictive Red Blood Cell Transfusion Strategies in Patients With Acute Myocardial Infarction and Anaemia. (REALITY)

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ClinicalTrials.gov Identifier: NCT02648113

Recruitment Status : Completed

First Posted : January 6, 2016

Last Update Posted : April 12, 2022

View this study on Beta.ClinicalTrials.gov

Sponsor:

Information provided by (Responsible Party):

Assistance Publique - Hôpitaux de Paris

Study Description

Brief Summary:

Anemia in patients with myocardial infarction (MI) is a relatively frequent issue, resulting in poorer outcome. There is equipoise regarding which transfusion strategy is best, and there is an international consensus on the urgent need for a randomized trial.

The investigators hypothesize that a "restrictive" transfusion strategy is at least non-inferior to a "liberal" transfusion strategy on 30-day outcomes of MI patients with anemia. Given the costs and risks of transfusion, a cost-effectiveness and cost-utility analysis becomes key to determining the role of each strategy.

Condition or disease	Intervention/treatment	Phase
Myocardial Infarction Anemia Blood Transfusion	Procedure: Restrictive transfusion Procedure: Liberal transfusion Biological: red blood transfusion	Not Applicable

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Detailed Description:

Anemia is frequent in patients with myocardial infarction (MI). The antiplatelet and anticoagulant agents used for MI treatment increase the risk of bleeding, which in turn increases the risk of ischemia and mortality. Anemia is an independent predictor of cardiac events in this setting. In the "FAST-MI 2010" nationwide registry, the prevalence of anemia (defined as Hb <10g/dL) at admission was 3% and impacted mortality. Whether this risk can be overcome by transfusion is debated.

In theory, transfusion should increase oxygen delivery to the myocardium. However, recent data suggest that oxygen delivery is not increased in patients receiving transfusion, that red blood cells are rapidly depleted of nitric oxide during storage and that, conversely, transfusion may increase platelet activation and aggregation and these consequences appear potentially even more deleterious in patients with cardiovascular disease. In the general population without cardiovascular disease of medical and surgical patients, the role of liberal vs restrictive transfusion strategies has been explored by a series of randomized trials, which have led to a consensus to withhold blood transfusions until a threshold of 7 to 8 g/dl hemoglobin is reached.

Among patients with myocardial infarction, however, both the deleterious consequences of anemia and the risks of transfusion may be greater, which leads to lingering uncertainty regarding the role of liberal vs restrictive transfusion strategies in this setting. The clinical data are observational and contradictory. Conversely, a large meta-analysis (>200 000 patients) reported a higher risk of mortality and recurrent MI in MI patients who received transfusion. More recently, a careful observational study has shown that the majority of patients undergoing blood transfusion cannot be matched with non-transfused patients due to their markedly different clinical profiles, indicating that observational studies cannot reliable establish the benefits or risks of transfusion because they are hopelessly influenced by selection bias. These results strongly highlight the need for randomized trials to establish the role of transfusion during acute MI, a call for a randomized trial that has been echoed by several thought leaders in the field in recent years. Two small randomized trials (respectively 45 and 110 patients) comparing liberal vs. restrictive transfusion strategies in MI showed no clear difference in clinical outcomes but were both underpowered.

The only guideline regarding management of anemia in this setting is from the European Society of Cardiology (ESC) guidelines on non-ST segment elevation - acute coronary syndrome (NSTE-ACS), which advise blood transfusion only if the hemodynamic status is compromised or the hemoglobin level is <7g/dL. As a result, there is wide variation in clinical practice. There is therefore equipoise regarding which transfusion strategy is best.

Hypothesis:

We hypothesize that a "restrictive" transfusion strategy (triggered by Hb <= 8 g/ dL) will be clinically non-inferior to a "liberal" transfusion strategy (triggered by Hb <= 10g/ dL) but will be less costly.

Main objective:

The main objective of the study is to compare cost-effectiveness of restrictive (triggered by Hb <= 8 g/ dL) vs liberal (triggered by Hb <= 10g/ dL) red blood transfusion strategies for patients with acute MI and anemia (7g /dL < Hb <= 10g / dL).

Secondary objective(s):

The key secondary objective is to perform cost-utility analyses at 30-days and 1 year.
The main clinical objective will be to determine whether a restrictive transfusion strategy is clinically non-inferior to a liberal transfusion strategy in terms of major adverse cardiac events (MACE) at 30 days, defined as the composite of all-cause death, nonfatal stroke, nonfatal recurrent MI, and emergency revascularization prompted by ischemia.

2. A tertiary objective will be to compare major adverse cardiac events (MACE) at 1 year, since the impact of transfusion strategies on MACE may be delayed, or conversely, an initial benefit of either strategy may become lost over the first year.

Study Design

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Study Type :	Interventional (Clinical Trial)
Actual Enrollment :	668 participants
Allocation:	Randomized
Intervention Model:	Parallel Assignment
Masking:	None (Open Label)
Primary Purpose:	Supportive Care
Official Title:	Cost-effectiveness and Cost-utility of Liberal vs Restrictive Red Blood Cell Transfusion Strategies in Patients With Acute Myocardial Infarction and Anaemia. The REALITY (REstrictive And LIberal Transfusion Strategies in Patients With Acute mYocardial Infarction) Randomized Trial.
Actual Study Start Date :	March 23, 2016
Actual Primary Completion Date :	October 10, 2019
Actual Study Completion Date :	September 10, 2020

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Anemia Blood Transfusion and Donation Heart Attack

Genetic and Rare Diseases Information Center resources: Acute Graft Versus Host Disease

U.S. FDA Resources

Arms and Interventions

Arm	Intervention/treatment
Experimental: Restrictive transfusion strategy Transfusions are withheld unless Hb is <= 8 g/dL, with a target Hb of 8 to 10 g /dL	Procedure: Restrictive transfusion Transfusions are withheld unless Hb is <= 8 g/dL, with a target Hb of 8 to 10 g /dL Biological: red blood transfusion
Experimental: Liberal transfusion strategy Transfusions are allowed as soon as Hb <= 10 g/dL with a target of 11 g /dL.	Procedure: Liberal transfusion transfusions are allowed as soon as Hb <= 10 g/dL with a target of 11 g /dL Biological: red blood transfusion

Outcome Measures

Primary Outcome Measures :

Cost-effectiveness ratio at 30 days [ Time Frame: 30 days ]
The primary endpoint is the incremental cost-effectiveness ratio (ICER) at 30-days, using the composite endpoint (30-day composite of all-cause death, non fatal stroke, nonfatal recurrent MI, and emergency revascularization prompted by ischemia) as the effectiveness criterion

Secondary Outcome Measures :

Cost-effectiveness ratio at 1 year [ Time Frame: 1 year ]
Incremental cost-effectiveness ratio (ICER) at 1 year, using the composite endpoint (1-year composite of all-cause death, non fatal stroke, nonfatal recurrent MI, and emergency revascularization prompted by ischemia) as the effectiveness criterion
Clinically non inferiority at 30 days [ Time Frame: 30 days ]
The main clinical endpoint is Major Adverse Cardiac Events (MACE) at 30-days defined as the 30-day composite of all-cause death, non-fatal recurrent MI, non-fatal stroke and emergency revascularization prompted by ischemia, (all of the components of this composite clinical outcome will be analyzed separately as secondary endpoints of their own)
Clinically non inferiority at 1 year [ Time Frame: 1 year ]
The main clinical endpoint is Major Adverse Cardiac Events (MACE) at 30-days defined as the 30-day composite of all-cause death, non-fatal recurrent MI, non-fatal stroke and emergency revascularization prompted by ischemia, (all of the components of this composite clinical outcome will be analyzed separately as secondary endpoints of their own)

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:	18 Years and older (Adult, Older Adult)
Sexes Eligible for Study:	All
Accepts Healthy Volunteers:	No

Criteria

Inclusion Criteria:

Aged ≥ 18 years
Recent acute myocardial infarction, with or without ST- segment elevation, with a combination of ischemic symptoms occurring in the past 48 hours,before the MI related admission, and elevation of biomarkers of myocardial injury (troponin)
Anemia Hb ≤ 10g / dL but > 7 g/dL on Hb, measured at any time during the index hospital admission for MI.
Written informed consent
Coverage for medical insurance.

Exclusion Criteria:

Shock (SBP < 90 mmHg with clinical signs of low output or patients requiring inotropic agents)
MI occurring post-percutaneous coronary intervention (PCI) or post-coronary artery bypass graft (CABG) (i.e. type IV or V Acute MI according to the 2012 Universal Definition of MI
Life-threatening or massive ongoing bleeding (as judged by the investigator)
Any blood transfusion in the previous 30-days
any known malignant hematologic disease Note: Sickle cell disease, thalassemia and anemia due to chronic renal failure (even under EPO) are not an exclusion criteria

Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02648113

Locations

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France
Hôpital Bichat
Paris, France
Spain
Hospital Clinic of Barcelona
Barcelona, Spain, 08036

Sponsors and Collaborators

Assistance Publique - Hôpitaux de Paris

Investigators

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Principal Investigator:	Philippe-Gabriel STEG	Assistance Publique - Hôpitaux de Paris

More Information

Publications of Results:

Ducrocq G, Gonzalez-Juanatey JR, Puymirat E, Lemesle G, Cachanado M, Durand-Zaleski I, Arnaiz JA, Martinez-Selles M, Silvain J, Ariza-Sole A, Ferrari E, Calvo G, Danchin N, Avendano-Sola C, Frenkiel J, Rousseau A, Vicaut E, Simon T, Steg PG; REALITY Investigators. Effect of a Restrictive vs Liberal Blood Transfusion Strategy on Major Cardiovascular Events Among Patients With Acute Myocardial Infarction and Anemia: The REALITY Randomized Clinical Trial. JAMA. 2021 Feb 9;325(6):552-560. doi: 10.1001/jama.2021.0135.

Ducrocq G, Calvo G, Gonzalez-Juanatey JR, Durand-Zaleski I, Avendano-Sola C, Puymirat E, Lemesle G, Arnaiz JA, Martinez-Selles M, Rousseau A, Cachanado M, Vicaut E, Silvain J, Karam C, Danchin N, Simon T, Steg PG; REALITY investigators. Restrictive vs liberal red blood cell transfusion strategies in patients with acute myocardial infarction and anemia: Rationale and design of the REALITY trial. Clin Cardiol. 2021 Feb;44(2):143-150. doi: 10.1002/clc.23453. Epub 2021 Jan 6.

Other Publications:

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Cooper HA, Rao SV, Greenberg MD, Rumsey MP, McKenzie M, Alcorn KW, Panza JA. Conservative versus liberal red cell transfusion in acute myocardial infarction (the CRIT Randomized Pilot Study). Am J Cardiol. 2011 Oct 15;108(8):1108-11. doi: 10.1016/j.amjcard.2011.06.014. Epub 2011 Jul 24.

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Hamm CW, Bassand JP, Agewall S, Bax J, Boersma E, Bueno H, Caso P, Dudek D, Gielen S, Huber K, Ohman M, Petrie MC, Sonntag F, Uva MS, Storey RF, Wijns W, Zahger D; ESC Committee for Practice Guidelines. ESC Guidelines for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation: The Task Force for the management of acute coronary syndromes (ACS) in patients presenting without persistent ST-segment elevation of the European Society of Cardiology (ESC). Eur Heart J. 2011 Dec;32(23):2999-3054. doi: 10.1093/eurheartj/ehr236. Epub 2011 Aug 26. No abstract available.

Thygesen K, Alpert JS, Jaffe AS, Simoons ML, Chaitman BR, White HD; Writing Group on the Joint ESC/ACCF/AHA/WHF Task Force for the Universal Definition of Myocardial Infarction; Thygesen K, Alpert JS, White HD, Jaffe AS, Katus HA, Apple FS, Lindahl B, Morrow DA, Chaitman BA, Clemmensen PM, Johanson P, Hod H, Underwood R, Bax JJ, Bonow RO, Pinto F, Gibbons RJ, Fox KA, Atar D, Newby LK, Galvani M, Hamm CW, Uretsky BF, Steg PG, Wijns W, Bassand JP, Menasche P, Ravkilde J, Ohman EM, Antman EM, Wallentin LC, Armstrong PW, Simoons ML, Januzzi JL, Nieminen MS, Gheorghiade M, Filippatos G, Luepker RV, Fortmann SP, Rosamond WD, Levy D, Wood D, Smith SC, Hu D, Lopez-Sendon JL, Robertson RM, Weaver D, Tendera M, Bove AA, Parkhomenko AN, Vasilieva EJ, Mendis S; ESC Committee for Practice Guidelines (CPG). Third universal definition of myocardial infarction. Eur Heart J. 2012 Oct;33(20):2551-67. doi: 10.1093/eurheartj/ehs184. Epub 2012 Aug 24. No abstract available.

Hebert PC, Wells G, Blajchman MA, Marshall J, Martin C, Pagliarello G, Tweeddale M, Schweitzer I, Yetisir E. A multicenter, randomized, controlled clinical trial of transfusion requirements in critical care. Transfusion Requirements in Critical Care Investigators, Canadian Critical Care Trials Group. N Engl J Med. 1999 Feb 11;340(6):409-17. doi: 10.1056/NEJM199902113400601. Erratum In: N Engl J Med 1999 Apr 1;340(13):1056.

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Sherwood MW, Rao SV. Acute coronary syndromes: Blood transfusion in patients with acute MI and anaemia. Nat Rev Cardiol. 2013 Apr;10(4):186-7. doi: 10.1038/nrcardio.2013.14. Epub 2013 Feb 5.

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Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

Durand-Zaleski I, Ducrocq G, Mimouni M, Frenkiel J, Avendano-Sola C, Gonzalez-Juanatey JR, Ferrari E, Lemesle G, Puymirat E, Berard L, Cachanado M, Arnaiz JA, Martinez-Selles M, Silvain J, Ariza-Sole A, Calvo G, Danchin N, Paco S, Drouet E, Abergel H, Rousseau A, Simon T, Steg PG. Economic evaluation of restrictive vs. liberal transfusion strategy following acute myocardial infarction (REALITY): trial-based cost-effectiveness and cost-utility analyses. Eur Heart J Qual Care Clin Outcomes. 2023 Feb 28;9(2):194-202. doi: 10.1093/ehjqcco/qcac029.

Carson JL, Stanworth SJ, Dennis JA, Trivella M, Roubinian N, Fergusson DA, Triulzi D, Doree C, Hebert PC. Transfusion thresholds for guiding red blood cell transfusion. Cochrane Database Syst Rev. 2021 Dec 21;12(12):CD002042. doi: 10.1002/14651858.CD002042.pub5.

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Responsible Party:	Assistance Publique - Hôpitaux de Paris
ClinicalTrials.gov Identifier:	NCT02648113
Other Study ID Numbers:	K140705 2015-A00360-49 ( Other Identifier: ANSM )
First Posted:	January 6, 2016 Key Record Dates
Last Update Posted:	April 12, 2022
Last Verified:	March 2022

Keywords provided by Assistance Publique - Hôpitaux de Paris:


Myocardial Infarction Anemia Blood Transfusion

Additional relevant MeSH terms:

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Myocardial Infarction Anemia Infarction Hematologic Diseases Ischemia Pathologic Processes	Necrosis Myocardial Ischemia Heart Diseases Cardiovascular Diseases Vascular Diseases

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