Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

679 questions · 687 findings · 43 reviews

No studies found 169 · 24.6%GRADE not reported 172 · 25%Very low 157 · 22.9%Low 128 · 18.6%Moderate 47 · 6.8%High 14 · 2%

Nitrous oxide vs carbon dioxide

Procedure‐related general complications · people undergoing laparoscopic general abdominal or gynaecological pelvic surgery under general anaesthesia

It is very uncertain whether nitrous oxide changes procedure‐related general complications (surgical morbidity) compared with carbon dioxide (very low certainty).

1 finding from 1 review

Intervention not reported

Total studies: 282 RCTs Total participants: 50,812 Number of treatments: 65 Geometry of the network** · adults undergoing any type of surgery under general anaesthesia Interventions: antiemetic drugs (monoprophylaxis and combination…
1 finding from 1 review