Evidence map›Paper›PMID 37571352›Full record

SynthesisNutrients2023

Effects of Omega-3 Fatty Acids on Postoperative Inflammatory Response: A Systematic Review and Meta-Analysis.

Ghaith Mohsen, Annika Stroemer, Andreas Mayr, Andrea Kunsorg, Christian Stoppe, Maria Wittmann, Markus Velten

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Nutrients, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 4% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. The use of preoperative enteral immunonutrition in patients undergoing elective colorectal cancer surgery: A systematic review and meta-analysis.Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2025
    Pooled it
  2. Trial
  3. Review
  4. Review
  5. Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Review
  11. Targeted nutritional strategies in postoperative care.Anesthesia and pain medicine · 2025
    Review
  12. Observational
  13. Article
  14. Mode of delivery predicts postpartum maternal leukocyte telomere length.European journal of obstetrics, gynecology, and reproductive biology · 2024
    Article
  15. Article
  16. Review
  17. Article
  18. Article
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

7 authors at 2 institutions in 1 country.

Ghaith MohsenDepartment of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, 53127 Bonn, Germany.
Annika StroemerDepartment of Medical Biometry, Informatics and Epidemiology, University Hospital Bonn, 53127 Bonn, Germany.ORCID 0000-0002-1284-3318
Andreas MayrDepartment of Medical Biometry, Informatics and Epidemiology, University Hospital Bonn, 53127 Bonn, Germany.ORCID 0000-0001-7106-9732
Andrea KunsorgDepartment of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, 53127 Bonn, Germany.
Christian StoppeDepartment of Anesthesiology and Intensive Care Medicine, University Hospital Wuerzburg, 97080 Würzburg, Germany.ORCID 0000-0002-2028-2039
Maria WittmannDepartment of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, 53127 Bonn, Germany.ORCID 0000-0003-4786-7712
Markus VeltenDepartment of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, 53127 Bonn, Germany.ORCID 0000-0001-5439-4648
University Hospital Bonn · DEDeutsches Herzzentrum der Charité · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Initial evidence indicates that preoperatively initiated administration of omega-3 fatty acids (FAs) attenuates the postoperative inflammatory reaction. The effects of immunonutrition containing omega-3 FAs, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), on the inflammatory response to abdominal surgery continues to be unclear, although improved outcomes have been reported. Therefore, we determined the effectiveness of preoperatively initiated omega-3 FAs administration on postoperative inflammation defined as CRP (C-Reactive Protein), IL-6 (Interleukin 6), and WBC (White Blood Count) and potential effects on postoperative length of hospital stay (LOS) due to an improved inflammatory response.

methodsa literature search of Cochrane Library was conducted to identify all randomized controlled trials (RCTs) investigating the effects of preoperatively initiated omega-3 to standard care, placebo, or other immunonutrients excluding omega-3 FAs in patients undergoing abdominal surgery until the end of December 2022.

resultsa total of 296 articles were found during the initial search. Thirteen RCTs involving 950 patients were identified that met the search criteria. These were successively analyzed and included in this meta-analysis. There was no significant difference between the groups with respect to inflammatory markers IL-6: -0.55 [-1.22; 0.12]

conclusionalthough reduced inflammatory markers were observed, preoperative administration of omega-3 FAs immunonutrients had no significant effect on the postoperative inflammatory response in patients undergoing abdominal surgeries. Yet, results obtained from this study are inconclusive, likely attributed to the limited number of trials and patients included. Further studies are required to obtain a better educated verdict.

Indexed as

Fatty Acids, Omega-3Interleukin-6Dietary SupplementsDocosahexaenoic AcidsEicosapentaenoic AcidHumansInflammationDocosahexaenoic AcidsEicosapentaenoic AcidFatty Acids, Omega-3Interleukin-6abdominal surgeryfatty acidsfish oilomega-3perioperative nutritionpreoperative nutrition

Identifiers

PMID37571352
PMCPMC10421202
OpenAlexW4385416604

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.