Table 2

ECMO compared to standard care for ARDS

Patient or population: adults with ARDS
Settings: intensive care
Intervention: ECMO
Comparison: standard care
OutcomesIllustrative comparative risks (95% CI)Relative effect (95% CI)No. of participants (studies)Quality of evidence (GRADE)Comments
Control riskIntervention risk
Usual careECMO
Mortality (pooled)517 per 1000324 per 1000
(264 to 408)
RR 0.64
(0.51 to 0.79)
505
(three studies)
+---
VERY LOW
Due to serious risk of bias and serious indirectness
Includes data from two quasirandomised trials of patients with influenza A H1N1
Adverse event: bleeding0 per 1000250 per 1000RR 26.02
(3.68 to
184.16)
249
(two studies)
+---
VERY LOW
Due to serious risk of bias and serious indirectness
  • ARDS, acute respiratory distress syndrome; ECMO, extracorporeal membrane oxygenation.