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Omega-3 Fatty Acids as Antiarrhythmic Drugs: Upstream Target Modulators Affecting Acute and Long-Term Pathological
David F Driscoll1,2, Francine K Welty3, Bruce R Bistrian4
1Stable Solutions LLC, Easton MA.
Insights
Postoperative atrial fibrillation (POAF) after coronary artery bypass grafting (CABG) is common. Omega-3 fatty acids show promise in reducing inflammation and mitigating POAF risks.
Area of Science:
- Cardiology
- Pharmacology
- Biochemistry
Background:
- Postoperative atrial fibrillation (POAF) is a frequent complication after coronary artery bypass grafting (CABG) surgery.
- POAF is linked to increased short-term and long-term morbidity and mortality.
- Inflammation, both preoperative and postoperative, is a primary driver of POAF pathophysiology.
Purpose of the Study:
- To review the role of omega-3 fatty acids (Ω-3 fatty acids) in mitigating POAF.
- To explore the anti-inflammatory and antiarrhythmic properties of Ω-3 fatty acids in the context of CABG surgery.
Main Methods:
- A literature search was conducted using PubMed.
- Studies focusing on complications in patients undergoing isolated CABG surgery were selected.
- Data were qualitatively assessed and summarized.
Main Results:
- POAF affects approximately 30% of patients following CABG.
- Inflammation is identified as the leading cause of POAF.
- Ω-3 fatty acids possess anti-inflammatory properties and may reduce POAF clinical risks.
Conclusions:
- Currently, no definitive prophylaxis exists for POAF post-CABG.
- Targeting the inflammatory response may improve treatment outcomes for POAF.
- Ω-3 fatty acids may reduce acute inflammation by modulating eicosanoids and pro-resolving mediators.
Objectives:
Postoperative atrial fibrillation (POAF) is a common complication in the acute care period following coronary artery bypass grafting (CABG) surgery that is associated with significant morbidity and mortality in both short-term and long-term settings. Recently, the Vaughn Williams Classification of antiarrhythmic agents, first proposed in 1975 and widely viewed as the authoritative description of their electrophysiologic actions, was updated and notably omega-3 fatty acids (Ω-3 fatty acids) have been included in class VII, described as "upstream target modulators," to mitigate pathological structural and electrophysiological remodeling changes in the aged and/or injured myocardium.
Data Sources:
A PubMed literature search was performed.
Study Selection:
Studies examining the significance of complications in patients undergoing isolated CABG surgery were selected for inclusion.
Data Extraction:
Relevant data were qualitatively assessed and narratively summarized.
Data Synthesis:
POAF occurs in approximately 30% of patients, and inflammation from chronic coronary artery disease preoperatively, as well as acute atrial inflammation from surgery postoperatively are the leading causes. Inflammation underlies its pathophysiology; therefore Ω-3 fatty acids not only exhibit antiarrhythmic properties but are an effective anti-inflammatory treatment that may reduce the clinical risks of POAF.
Conclusions:
At present no effective prophylaxis is available to address POAF following CABG surgery. Clinical approaches that focus on the inflammatory response in this setting may optimize the response to treatment. The current literature supports the hypothesis that Ω-3 fatty acids may acutely reduce the inflammatory response via favorable alterations in the metabolism of prostaglandins and leukotrienes (eicosanoids) and specialized pro-resolving mediators.
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