Evidence map›Paper›PMID 34261492›Full record

SynthesisCritical care (London, England)2021

Venoarterial extracorporeal membrane oxygenation as mechanical circulatory support in adult septic shock: a systematic review and meta-analysis with individual participant data meta-regression analysis.

Ryan Ruiyang Ling, Kollengode Ramanathan, Wynne Hsing Poon, Chuen Seng Tan, Nicolas Brechot, Daniel Brodie, Alain Combes, Graeme MacLaren

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Critical care (London, England), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 5 pooled it
6.3field-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

70 citing papers in PubMed, 5 syntheses or guidelines pooled it, 123 citations in OpenAlex.

  1. Pooled it
  2. [S3 guideline on sepsis-prevention, diagnosis, therapy, and follow-up care-update 2025].Medizinische Klinik, Intensivmedizin und Notfallmedizin · 2025
    Guideline
  3. Guideline
  4. Pooled it
  5. Extracorporeal membrane oxygenation for critically ill adults.The Cochrane database of systematic reviews · 2023
    Pooled it
  6. Article
  7. Review
  8. Article
  9. Septic cardiomyopathy: Fact or fiction?American heart journal plus : cardiology research and practice · 2026
    Review
  10. PScientific reports · 2026
    Observational
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Nomograms to predict outcome for patients undergoing venoarterial extracorporeal membrane oxygenation treatment for septic shock.Journal of artificial organs : the official journal of the Japanese Society for Artificial Organs · 2025
    Article
  20. Review

10 more citing papers are in PubMed but not listed here.

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

8 authors at 4 institutions in 3 countries.

Ryan Ruiyang Ling *Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.ORCID 0000-0002-8335-7640
Kollengode Ramanathan *Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore. ram_ramanathan@nuhs.edu.sg.ORCID 0000-0003-1822-9455
Wynne Hsing PoonYong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.ORCID 0000-0003-3320-8038
Chuen Seng TanSaw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore.ORCID 0000-0002-6513-2309
Nicolas BrechotService de Médecine Intensive-Réanimation, Institut de Cardiologie, Assistance Publique-Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Paris, France.ORCID 0000-0002-7536-287X
Daniel BrodieDivision of Pulmonary, Allergy, and Critical Care Medicine, Columbia University Medical Centre and New York-Presbyterian Hospital, New York, USA.ORCID 0000-0002-0813-3145
Alain CombesService de Médecine Intensive-Réanimation, Institut de Cardiologie, Assistance Publique-Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Paris, France.ORCID 0000-0002-6030-3957
Graeme MacLarenYong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.ORCID 0000-0002-1307-4274
National University of Singapore · SGCentre National de la Recherche Scientifique · FRInserm · FRNewYork–Presbyterian Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWhile recommended by international societal guidelines in the paediatric population, the use of venoarterial extracorporeal membrane oxygenation (VA ECMO) as mechanical circulatory support for refractory septic shock in adults is controversial. We aimed to characterise the outcomes of adults with septic shock requiring VA ECMO, and identify factors associated with survival.

methodsWe searched Pubmed, Embase, Scopus and Cochrane databases from inception until 1st June 2021, and included all relevant publications reporting on > 5 adult patients requiring VA ECMO for septic shock. Study quality and certainty in evidence were assessed using the appropriate Joanna Briggs Institute checklist, and the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach, respectively. The primary outcome was survival to hospital discharge, and secondary outcomes included intensive care unit length of stay, duration of ECMO support, complications while on ECMO, and sources of sepsis. Random-effects meta-analysis (DerSimonian and Laird) were conducted. DATA SYNTHESIS: We included 14 observational studies with 468 patients in the meta-analysis. Pooled survival was 36.4% (95% confidence interval [CI]: 23.6%-50.1%). Survival among patients with left ventricular ejection fraction (LVEF) < 20% (62.0%, 95%-CI: 51.6%-72.0%) was significantly higher than those with LVEF > 35% (32.1%, 95%-CI: 8.69%-60.7%, p = 0.05). Survival reported in studies from Asia (19.5%, 95%-CI: 13.0%-26.8%) was notably lower than those from Europe (61.0%, 95%-CI: 48.4%-73.0%) and North America (45.5%, 95%-CI: 16.7%-75.8%). GRADE assessment indicated high certainty of evidence for pooled survival.

conclusionsWhen treated with VA ECMO, the majority of patients with septic shock and severe sepsis-induced myocardial depression survive. However, VA ECMO has poor outcomes in adults with septic shock without severe left ventricular depression. VA ECMO may be a viable treatment option in carefully selected adult patients with refractory septic shock.

Indexed as

Administration, IntravenousCardiovascular SystemExtracorporeal Membrane OxygenationFluid TherapyHumansRegression AnalysisShock, SepticECMOMechanical circulatory supportSeptic cardiomyopathySeptic shockVenoarterial

Identifiers

PMID34261492
PMCPMC8278703
OpenAlexW3168470763

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.