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The ω-3 Fatty Acids for Prevention of Post-Operative Atrial Fibrillation trial--rationale and design.

Identifieur interne : 000A47 ( Main/Exploration ); précédent : 000A46; suivant : 000A48

The ω-3 Fatty Acids for Prevention of Post-Operative Atrial Fibrillation trial--rationale and design.

Auteurs : Dariush Mozaffarian [États-Unis] ; Roberto Marchioli ; Tim Gardner ; Paolo Ferrazzi ; Patrick O'Gara ; Roberto Latini ; Peter Libby ; Federico Lombardi ; Alejandro Macchia ; Richard Page ; Massimo Santini ; Luigi Tavazzi ; Gianni Tognoni

Source :

RBID : pubmed:21742090

English descriptors

Abstract

Postoperative atrial fibrillation/flutter (PoAF) commonly complicates cardiac surgery, occurring in 25% to 60% of patients. Postoperative atrial fibrillation/flutter is associated with significant morbidity, higher long-term mortality, and increased health care costs. Novel preventive therapies are clearly needed. In experiments and short-term trials, seafood-derived long-chain ω-3 polyunsaturated fatty acids (PUFAs) influence several risk factors that might reduce risk of PoAF. A few small and generally underpowered trials have evaluated effects of ω-3-PUFAs supplementation on PoAF with mixed results. The OPERA trial is an appropriately powered, investigator-initiated, randomized, double-blind, placebo-controlled, multinational trial to determine whether perioperative oral ω-3-PUFAs reduces occurrence of PoAF in patients undergoing cardiac surgery. Additional aims include evaluation of resource use, biologic pathways and mechanisms, postoperative cognitive decline, and safety. Broad inclusion criteria encompass a "real-world" population of outpatients and inpatients scheduled for cardiac surgery. Treatment comprises a total preoperative loading dose of 8 to 10 g of ω-3-PUFAs or placebo divided over 2 to 5 days, followed by 2 g/d until hospital discharge or postoperative day 10, whichever comes first. Based on anticipated 30% event rate in controls, total enrollment of 1,516 patients (758 per treatment arm) will provide 90% power to detect 25% reduction in PoAF. The OPERA trial will provide invaluable evidence to inform biologic pathways; proof of concept that ω-3-PUFAs influence cardiac arrhythmias; and potential regulatory standards and clinical use of this simple, inexpensive, and low-risk intervention to prevent PoAF.

DOI: 10.1016/j.ahj.2011.03.035
PubMed: 21742090


Affiliations:


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Le document en format XML

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<term>Atrial Fibrillation (prevention & control)</term>
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<term>Dose-Response Relationship, Drug</term>
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<term>Fatty Acids, Omega-3 (administration & dosage)</term>
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<term>Postoperative Complications</term>
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<div type="abstract" xml:lang="en">Postoperative atrial fibrillation/flutter (PoAF) commonly complicates cardiac surgery, occurring in 25% to 60% of patients. Postoperative atrial fibrillation/flutter is associated with significant morbidity, higher long-term mortality, and increased health care costs. Novel preventive therapies are clearly needed. In experiments and short-term trials, seafood-derived long-chain ω-3 polyunsaturated fatty acids (PUFAs) influence several risk factors that might reduce risk of PoAF. A few small and generally underpowered trials have evaluated effects of ω-3-PUFAs supplementation on PoAF with mixed results. The OPERA trial is an appropriately powered, investigator-initiated, randomized, double-blind, placebo-controlled, multinational trial to determine whether perioperative oral ω-3-PUFAs reduces occurrence of PoAF in patients undergoing cardiac surgery. Additional aims include evaluation of resource use, biologic pathways and mechanisms, postoperative cognitive decline, and safety. Broad inclusion criteria encompass a "real-world" population of outpatients and inpatients scheduled for cardiac surgery. Treatment comprises a total preoperative loading dose of 8 to 10 g of ω-3-PUFAs or placebo divided over 2 to 5 days, followed by 2 g/d until hospital discharge or postoperative day 10, whichever comes first. Based on anticipated 30% event rate in controls, total enrollment of 1,516 patients (758 per treatment arm) will provide 90% power to detect 25% reduction in PoAF. The OPERA trial will provide invaluable evidence to inform biologic pathways; proof of concept that ω-3-PUFAs influence cardiac arrhythmias; and potential regulatory standards and clinical use of this simple, inexpensive, and low-risk intervention to prevent PoAF.</div>
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