Evidence map›Paper›PMID 27788688›Full record

SynthesisCritical care (London, England)2016

High-dose intravenous selenium does not improve clinical outcomes in the critically ill: a systematic review and meta-analysis.

William Manzanares, Margot Lemieux, Gunnar Elke, Pascal L Langlois, Frank Bloos, Daren K Heyland

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Critical care (London, England), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 6 pooled it
10.4field-weighted citation impact, top 1% 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

31 citing papers in PubMed, 6 syntheses or guidelines pooled it, 98 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Probiotics in hospitalized adult patients: a systematic review of economic evaluations.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2020
    Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Trial
  8. Wound Healing Potential of Selenium and Nanoselenium.Biological trace element research · 2026
    Review
  9. Observational
  10. Review
  11. Trace elements: Clinical perspectives in the critically ill.Journal of the Intensive Care Society · 2025
    Review
  12. Review
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Review
  19. Article
  20. 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

6 authors at 5 institutions in 3 countries.

William ManzanaresDepartment of Critical Care, Intensive Care Unit, Hospital de Clínicas (University Hospital), Faculty of Medicine, Universidad de la República (UdelaR), Avenida Italia, 14th Floor, Montevideo, 11.600, Uruguay. wmanzanares@adinet.com.uy.
Margot LemieuxClinical Evaluation Research Unit, Kingston General Hospital, Kingston, ON, Canada.
Gunnar ElkeDepartment of Anesthesiology and Intensive Care Medicine, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany.
Pascal L LangloisCentre Hospitalier Universitaire de Sherbrooke, Hospital Fleurimont, Sherbrooke, QC, Canada.
Frank BloosDepartment of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany.
Daren K HeylandClinical Evaluation Research Unit, Kingston General Hospital, Kingston, ON, Canada.
Centre Hospitalier Universitaire de Sherbrooke · CAClinical Evaluation Research Unit · CAJena University Hospital · DEKingston General Hospital · CAUniversidad de la República · UY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSelenium (Se) is an essential trace element with antioxidant, anti-inflammatory, and immunomodulatory effects. So far, several randomized clinical trials (RCTs) have demonstrated that parenteral Se may improve clinical outcomes in intensive care unit (ICU) patients. Since publication of our previous systematic review and meta-analysis on antioxidants in the ICU, reports of several trials have been published, including the largest RCT on Se therapy. The purpose of the present systematic review was to update our previous data on intravenous (IV) Se in the critically ill.

methodsWe searched MEDLINE, Embase, and the Cochrane Central Register of Controlled Trials. We included RCTs with parallel groups comparing parenteral Se as single or combined therapy with placebo. Potential trials were evaluated according to specific eligibility criteria, and two reviewers abstracted data from original trials in duplicate independently. Overall mortality was the primary outcome; secondary outcomes were infections, ICU length of stay (LOS), hospital LOS, ventilator days, and new renal dysfunction.

resultsA total of 21 RCTs met our inclusion criteria. When the data from these trials were aggregated, IV Se had no effect on mortality (risk ratio [RR] 0.98, 95 % CI 0.90-1.08, P = 0.72, heterogeneity I

conclusionsIn critically ill patients, IV Se as monotherapy does not improve clinical outcomes.

Indexed as

AntioxidantsCritical IllnessDose-Response Relationship, DrugHumansInfusions, IntravenousMortalityRandomized Controlled Trials as TopicSeleniumTreatment OutcomeAntioxidantsSeleniumAntioxidant micronutrientCritically illIntravenous seleniumParenteral selenium

Identifiers

PMID27788688
PMCPMC5084353
OpenAlexW2539483169

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.