Organ support & nutrition

Extracorporeal Membrane Oxygenation Complications Are Not Causal for Mortality in Patients With Infarct-Related Cardiogenic Shock: A Mediation Analysis of the Extracorporeal Life Support in Infarct-Related Cardiogenic Shock (ECLS-SHOCK) Trial

Crit Care MedPublished Secondary analysis of the ECLS-SHOCK randomised trial

Authors' conclusion

VA-ECMO use in patients with AMI-CS was associated with increased frequencies of moderate to severe bleeding as well as vascular complications warranting intervention. However, these possible VA-ECMO-related complications did not mediate an increased mortality risk.

Study context

Population
Adults with acute myocardial infarction complicated by cardiogenic shock (AMI-CS), 44 centres
Participants
417 adults
Comparison
Routine venoarterial extracorporeal membrane oxygenation (VA-ECMO) vs medical therapy
Primary endpoint
Rate of complications and mortality, and causes of death
Follow-up
30 days
Methodological detailsmediation analysis, multicentre, international
  • Mediation analysis
  • Multicentre
  • International

Primary result

As reported in the abstract

Mediation effect of possible VA-ECMO-related complications on 30-day mortality
  • No significant mediation effect of possible VA-ECMO-related complications on 30-day mortality
  • Logistic regression: no significant association between frequency of VA-ECMO-related complications and mortality

Further findings

Death with bleeding as primary cause · 30 days

Patients who died from bleeding as primary cause of death
4

Safety

Moderate or severe bleeding · 30 days

P < 0.001

Peripheral vascular complications requiring intervention · 30 days

p equals to 0.008

Possible VA-ECMO-related complications, all patients · 30 days

Patients with possible VA-ECMO-related complications (mostly within 5 days of randomisation)
88 (21.1%)

Original publication

Extracorporeal Membrane Oxygenation Complications Are Not Causal for Mortality in Patients With Infarct-Related Cardiogenic Shock: A Mediation Analysis of the Extracorporeal Life Support in Infarct-Related Cardiogenic Shock (ECLS-SHOCK) Trial. Crit Care Med. Published 17 October 2025. doi:10.1097/ccm.0000000000006893

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