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Evidence found and GRADE certainty

2,908 questions · 3,101 findings · 509 reviews

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No studies found 571 · 18.4%GRADE not reported 358 · 11.5%Very low 723 · 23.3%Low 854 · 27.5%Moderate 489 · 15.8%High 106 · 3.4%

Higher vs lower FiO2 or targets of arterial oxygenation

All‐cause mortality: range 1 mo to 1 y · adults admitted to the ICU

It is very uncertain whether higher changes all‐cause mortality: range 1 mo to 1 y compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Proportion of participants with 1 or more serious adverse events according to International Conference on Harmonisation Good Clinical Practice (ICH‐GCP) · adults admitted to the ICU

It is very uncertain whether higher changes proportion of participants with ≥ 1 serious adverse events according… compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Lung injury diagnosed after randomisation (composite outcome): range 4 d to 23 d · adults admitted to the ICU

It is very uncertain whether higher changes lung injury diagnosed after randomisation (composite outcome): range… compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Myocardial infarction · adults admitted to the ICU

It is very uncertain whether higher changes myocardial infarction diagnosed after randomisation: range ≤ 90 d compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Stroke · adults admitted to the ICU

It is very uncertain whether higher changes stroke diagnosed after randomisation: range 1 mo to 3 mo compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Sepsis diagnosed after randomisation: range 28 d to 60 d · adults admitted to the ICU

It is very uncertain whether higher changes sepsis diagnosed after randomisation: range 28 d to 60 d compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

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