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Use of Fish Oils to Reduce Recurrence of Atrial Fibrillation Following DC Cardioversion

This study has been completed.
Information provided by (Responsible Party):
Melbourne Health Identifier:
First received: October 2, 2005
Last updated: May 4, 2015
Last verified: May 2015

The purpose of this study is to investigate whether fish oil supplements may be beneficial in preventing the recurrence of atrial fibrillation after cardioversion.

Atrial fibrillation is a heart condition which can sometimes be successfully treated by a cardioversion.

Cardioversion involves resetting the heart back to normal with the use of electric current.

There is a tendency for the atrial fibrillation to recur , days weeks or even months after the cardioversion.

Fish oil supplements may be of benefit to patients with heart problems Recent evidence suggests that fish oils may be beneficial to patients with rhythm disturbances.

Condition Intervention Phase
Atrial Fibrillation Drug: Fish oil Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Use of Fish Oils to Reduce Recurrence of Atrial Fibrillation Following DC Cardioversion.

Resource links provided by NLM:

Further study details as provided by Melbourne Health:

Primary Outcome Measures:
  • Recurrence of atrial fibrillation followed cardioversion [ Time Frame: 1 year ]

Other Outcome Measures:
  • Safety and tolerability [ Time Frame: 1 year ]

Enrollment: 200
Study Start Date: January 2003
Study Completion Date: November 2013
Primary Completion Date: November 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
No Intervention: Control
No fish oil exposure
Experimental: Fish oil
Patients given 6g/day of fish oil containing 1.8g/d of EPA+DHA in a 1.5:1 ratio.
Drug: Fish oil


Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Patients with persistent Atrial Fibrillation on Warfarin.

Exclusion Criteria:

  • paroxysmal atrial fibrillation with self terminating episodes.
  • left atrial size>6.0cm
  • myocardial infarction in the previous 6 months.
  • contraindications to amiodarone use .
  • cardiac surgery in the previous 3 months .
  • an acute reversible illness contributing to the development of af
  • a QTc interval > 480ms.
  • pregnancy
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00232219

Australia, Victoria
Royal Melbourne hospital
Melbourne, Victoria, Australia, 3050
Sponsors and Collaborators
Melbourne Health
Principal Investigator: Paul Sparks, MBBS, PhD. FRACP Melbourne Health
  More Information

Responsible Party: Melbourne Health Identifier: NCT00232219     History of Changes
Other Study ID Numbers: 2003.188
Study First Received: October 2, 2005
Last Updated: May 4, 2015

Additional relevant MeSH terms:
Atrial Fibrillation
Arrhythmias, Cardiac
Heart Diseases
Cardiovascular Diseases
Pathologic Processes
Disease Attributes processed this record on August 18, 2017