Antiarrhythmic Effects of N-3 Fatty Acids

February 17, 2016 updated by: National Heart, Lung, and Blood Institute (NHLBI)
To determine the antiarrhythmic effects of dietary N-3 fatty acids in patients with implanted defibrillators.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

BACKGROUND:

Ventricular tachycardia (VT) and ventricular fibrillation (VF) are common causes of the 300,000 sudden deaths occurring in the United States each year. Most of these victims have associated heart disease, most commonly coronary artery disease. Populations consuming considerable quantities of fish and marine mammals have lower than expected mortality rates from coronary disease. Interventional and observational trials have indicated that fatty fish consumption decreases the death rate from coronary artery disease, in part by reducing the number of sudden deaths. Animal and tissue culture studies both support the hypothesis that these beneficial effects are from the antiarrhythmic properties of n-3 long chained polyunsaturated fatty acids (eicosapentaenoic and docosahexaenoic acids).

DESIGN NARRATIVE:

Prospective, randomized, double blinded trial. Survivors of VT and VF with an implantable defibrillator were randomized, 100 to dietary supplementation with n-3 polyunsaturated fatty acids(PUFA) or 100 to a placebo. Adherence to the supplement were assessed by measurements of plasma, red cell, and adipose tissue n-3 fatty acid concentrations. The primary outcome variable was the incidence of recurrent VT or VF, but secondary variables were also assessed using serial implantable cardioverter defibrillator (ICD) assessment, correlation of the rhythms with the biochemical measurements of n-3 fatty acids, hospitalization rates and quality of life. The (ICD) was the best protection available to patients and stored rhythm electrograms which allowed documentation of rhythm endpoints.

The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.

Study Type

Interventional

Phase

  • Phase 2

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

No eligibility criteria

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Masking: Double

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Heart, Lung, and Blood Institute (NHLBI)

Publications and helpful links

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General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 1999

Study Completion (Actual)

January 1, 2004

Study Registration Dates

First Submitted

February 9, 2000

First Submitted That Met QC Criteria

February 9, 2000

First Posted (Estimate)

February 10, 2000

Study Record Updates

Last Update Posted (Estimate)

February 18, 2016

Last Update Submitted That Met QC Criteria

February 17, 2016

Last Verified

December 1, 2005

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 126
  • R01HL061682 (U.S. NIH Grant/Contract)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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