Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

16 questions · 16 findings · 8 reviews

No studies found 2 · 12.5%GRADE not reported 0 · 0%Very low 2 · 12.5%Low 6 · 37.5%Moderate 3 · 18.8%High 3 · 18.8%

Oxygenation vs no oxygenation during the apnoeic period preceding intubation

All‐cause mortality · people requiring tracheal intubation

Oxygenation showed no clear difference in mortality compared with no oxygenation during the apnoeic period preceding intubation (low certainty).

1 finding from 1 review

Oxygen vs air

All‐cause mortality in hospital for participants with AMI · patients with acute myocardial infarction

It is very uncertain whether oxygen changes all‐cause mortality in hospital for participants with AMI compared with air (very low certainty).

1 finding from 1 review

Oxygen vs air

All‐cause mortality in hospital for all participants (including those without confirmed AMI) · patients with acute myocardial infarction

It is very uncertain whether oxygen changes all‐cause mortality in hospital for all participants (including… compared with air (very low certainty).

1 finding from 1 review

Oxygen vs air

All‐cause mortality in hospital for all participants (including those without confirmed AMI) trials done in the revascularisation era · patients with acute myocardial infarction

Oxygen showed no clear difference in all‐cause mortality in hospital for all participants (including… compared with air (low certainty).

1 finding from 1 review

Titrated oxygen therapy vs high‐flow oxygen therapy

Mortality (respiratory‐ related and all‐cause · adults with acute exacerbations of chronic obstructive pulmonary disease

Titrated oxygen therapy may leads to lower mortality (respiratory‐ related and all‐cause compared with high‐flow oxygen therapy (low certainty).

1 finding from 1 review

Active cerebral oxygenation monitoring vs blinded cerebral oxygenation monitoring

Intraoperative mortality or postoperative mortality: Death ( · children and adults undergoing surgery

Active cerebral oxygenation monitoring showed no clear difference in intraoperative mortality or postoperative mortality: Death ( compared with blinded cerebral oxygenation monitoring (low certainty).

1 finding from 1 review

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) vs usual care

All‐cause mortality at 6 months (subgroup) · severe cardiorespiratory failure and cardiac arrest

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) showed no clear difference in all‐cause mortality: ECPR subgroup compared with conventional care (moderate certainty).

1 finding from 1 review

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) vs usual care

All‐cause mortality: all ECMO studies · severe cardiorespiratory failure and cardiac arrest

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) probably leads to lower all‐cause mortality: all ECMO studies compared with conventional care (moderate certainty).

1 finding from 1 review

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) vs usual care

All‐cause mortality: VV ECMO subgroup · severe cardiorespiratory failure and cardiac arrest

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) probably leads to lower all‐cause mortality: VV ECMO subgroup compared with conventional care (moderate certainty).

1 finding from 1 review

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) vs usual care

All‐cause mortality: VA ECMO subgroup · severe cardiorespiratory failure and cardiac arrest

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) showed no clear difference in all‐cause mortality: VA ECMO subgroup compared with conventional care (low certainty).

1 finding from 1 review

Oxygen‐guided lung‐recruitment maneuver vs usual care

Death at hospital discharge · preterm infants < 37 weeks' gestational age requiring conventional mechanical ventilation for respiratory distress syndrome

Oxygen‐guided lung‐recruitment maneuver showed no clear difference in mortality by hospital discharge compared with routine care (low certainty).

1 finding from 1 review