Evidence map›Paper›PMID 19196720›Full record

SynthesisEuropean heart journal2009

Effect of fish oil on ventricular tachyarrhythmia in three studies in patients with implantable cardioverter defibrillators.

Ingeborg A Brouwer, Merritt H Raitt, Carla Dullemeijer, Dale F Kraemer, Peter L Zock, Cynthia Morris, Martijn B Katan, William E Connor, John A Camm, Evert G Schouten and 1 more

Open access · bronzeAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in European heart journal, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 5 pooled it
9.0field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

45 citing papers in PubMed, 5 syntheses or guidelines pooled it, 122 citations in OpenAlex.

  1. Pooled it
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  6. Trial
  7. Effect of supplemented intake of omega-3 fatty acids on arrhythmias in patients with ICD: fish oil therapy may reduce ventricular arrhythmia.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2017
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  17. n-3 Polyunsaturated Fatty Acids and Cardiovascular Disease: Principles, Practices, Pitfalls, and Promises - A Contemporary Review.Medical principles and practice : international journal of the Kuwait University, Health Science Centre · 2017
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 8 institutions in 3 countries.

Ingeborg A BrouwerTI Food and Nutrition, Wageningen, The Netherlands. ingeborg.brouwer@falw.vu.nl
Merritt H Raitt
Carla Dullemeijer
Dale F Kraemer
Peter L Zock
Cynthia Morris
Martijn B Katan
William E Connor
John A Camm
Evert G Schouten
John McAnulty
Oregon Health & Science University · USVrije Universiteit Amsterdam · NLWageningen University & Research · NLGood Samaritan Regional Medical Center · USOregon State University · USPortland VA Medical Center · USSt George's Hospital · GBUnilever (Netherlands) · NL

Funding

YOUTH, Osteoporosis, and Understanding Total Health (YOUTH)M01RR000334 · NCRR · OREGON HEALTH & SCIENCE UNIVERSITY · PI DORSA, DANIEL MICHAEL · 1985 to 2006
$30.6M
ANTIARRHYTHMIC EFFECTS OF N-3 FATTY ACIDSR01HL061682 · NHLBI · OREGON HEALTH AND SCIENCE UNIVERSITY · PI MCANULTY, JOHN H · 1999 to 2002
$1.7M
NCRR NIH HHS 5M01 RR 00334NHLBI NIH HHS R01 HL 61682
6 · The paper itself

Abstract

aimsTo determine the effects of omega-3 polyunsaturated fatty acids (omega-3 PUFAs) from fish on the incidence of recurrent ventricular arrhythmia in implantable cardioverter defibrillator (ICD) patients by combining results from published trials. METHODS AND

resultsWe searched in the Medline, EMBASE, and Cochrane databases and performed a meta-analysis on all three available trials on fish oil and ventricular arrhythmia. Furthermore, we pooled individual data of two of these randomized, double-blind, placebo-controlled trials (Raitt et al. Fish oil supplementation and risk of ventricular tachycardia and ventricular fibrillation in patients with implantable defibrillators: a randomized controlled trial. JAMA 2005;293:2884-2891 and Brouwer et al. Effect of fish oil on ventricular tachyarrhythmia and death in patients with implantable cardioverter defibrillators: the Study on Omega-3 Fatty Acids and Ventricular Arrhythmia (SOFA) randomized trial. JAMA 2006;295:2613-2619). The main outcome was time to first confirmed ventricular fibrillation (VF) or ventricular tachycardia (VT) combined with death for the meta-analysis, and time to first spontaneous confirmed VF or VT for the pooled analysis. The meta-analysis (n = 1148) showed no convincing protective effect of fish oil (RR 0.90; 95% CI 0.67-1.22). The hazard ratio for the subgroup of patients with coronary artery disease at baseline (0.79; 0.60-1.06) tended towards a protective effect. The pooled analysis (n = 722) showed that time to appropriate ICD intervention was similar for fish oil and placebo treatment (log-rank P = 0.79).

conclusionThese findings do not support a protective effect of omega-3 PUFAs from fish oil on cardiac arrhythmia in all patients with an ICD. Current data neither prove nor disprove a beneficial or a detrimental effect for subgroups of patients with specific underlying pathologies.

Indexed as

Defibrillators, ImplantableAgedDietary SupplementsFatty Acids, Omega-3FemaleHeart FailureHumansMaleMiddle AgedProspective StudiesRandomized Controlled Trials as TopicSecondary PreventionTachycardia, VentricularTreatment OutcomeFatty Acids, Omega-3

Identifiers

PMID19196720
PMCPMC2663728
OpenAlexW2142493353

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.