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Evidence found and GRADE certainty

14 questions · 14 findings · 2 reviews · Emergency and Critical Care

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No studies found 1 · 7.1%GRADE not reported 1 · 7.1%Very low 0 · 0%Low 6 · 42.9%Moderate 6 · 42.9%High 0 · 0%

Oxygenation vs no oxygenation during the apnoeic period preceding intubation

Incidence of severe hypoxaemia (SpO2 < 80%) · people requiring tracheal intubation

Oxygenation showed no clear difference in incidence of severe hypoxaemia (SpO2 < 80%) compared with no oxygenation during the apnoeic period preceding intubation (low certainty).

1 finding from 1 review

Oxygenation vs no oxygenation during the apnoeic period preceding intubation

Hypoxaemia · people requiring tracheal intubation

Oxygenation showed no clear difference in incidence of hypoxaemia (SpO2 < 93%) compared with no oxygenation during the apnoeic period preceding intubation (low certainty).

1 finding from 1 review

Oxygenation vs no oxygenation during the apnoeic period preceding intubation

First‐pass success of cannulation · people requiring tracheal intubation

Oxygenation showed no clear difference in first pass success rate compared with no oxygenation during the apnoeic period preceding intubation (moderate certainty).

1 finding from 1 review

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

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

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

Major hemorrhage · severe cardiorespiratory failure and cardiac arrest

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) probably leads to higher major hemorrhage: all available studies compared with conventional care (moderate certainty).

1 finding from 1 review

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

Neurologic injury: all available studies · severe cardiorespiratory failure and cardiac arrest

Summary of findings table ‐ Extracorporeal membrane oxygenation (ECMO) showed no clear difference in neurologic injury: all available studies compared with conventional care (moderate certainty).

1 finding from 1 review