Effect of Supplemental Intake of Omega-3 Polyunsaturated Fatty Acids on the Rate and Complexity of Spontaneously Occurring Ventricular and Supraventricular Arrhythmias in Patients With Implantable Cardioverter Defibrillator (ICD) - A Randomized Clinical Trial

Coronary Artery Disease Clinical Trial

Status Active, not recruiting

Clinical Trial Summary

We hypothesize that oral supplementation with omega-3 PUFA will decrease occurrence of arrhythmic events among post-MI, ICD recipients.

Clinical Trial Description

This is a randomized, placebo-controlled, crossover, double- blind interventional study. Patients will receive 3.6 g of EPA and DHA fish oil and placebo oil for 6 months, randomly, in a crossover design, with a four month washout period between treatments.

Randomization will be stratified by ejection fraction (≤ 35% or > 35%), and the type of the index arrhythmia (VT - spontaneous or inducible by electrophysiologic study (EPS), versus other - VF, SCD, Primary prevention - MADIT II).

Ischemia severity was chosen to be evaluated by Single Photon Emission Computed Tomography (SPECT) during stress (dipyridamol infusion).

Subcutaneous adipose-tissue biopsy, a biomarker considered the gold-standard for the objective assessment of long-term habitual dietary intake of fish and marine omega-3 PUFA (EPA and DHA) will be obtain.

Compliance will be monitored by counting returned capsules or bottles and by measuring the omega-3 PUFA composition in red blood cells (RBC).

Three different types of questionnaires will be used in this trial to obtain more information as to the additional potential benefit of omega-3 PUFA supplementation:

1. The newly Israeli Food Frequency Questionnaire (FFQ) will be used to examine dietary intake of other nutritional habits/patterns and its relationship to the study outcomes.

2. The Hebrew language SF-36 health survey will be used to examine general health status.

3. The Back questionnaires will be use to examine possible beneficial effects of fish oil supplementation on depressive symptomatology. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Arrhythmia
• Coronary Artery Disease
• Coronary Disease
• Myocardial Ischemia

• NCT number: NCT00290056
• Study type: Interventional
• Source: Sheba Medical Center
• Status: Active, not recruiting
• Phase: Phase 4
• Start date: November 2005
• Completion date: June 2010