Findings

What do systematic reviews say?

3 questions · 3 findings · 1 reviews · Anaesthesia

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 3 · 100%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Reported mortality As reported in the trials · patients having major abdominal surgery

It is very uncertain whether the intervention changes reported mortality As reported in the trials (very low certainty).

1 finding from 1 review

Atelectasis As reported in the trials · patients having major abdominal surgery

It is very uncertain whether the intervention changes atelectasis As reported in the trials (very low certainty).

1 finding from 1 review

Pneumonia As reported in the included trials · patients having major abdominal surgery

It is very uncertain whether the intervention changes pneumonia As reported in the included trials (very low certainty).

1 finding from 1 review