Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,345 questions · 4,525 findings · 483 reviews

No studies found 1,024 · 22.6%GRADE not reported 388 · 8.6%Very low 1,172 · 25.9%Low 1,227 · 27.1%Moderate 576 · 12.7%High 138 · 3%

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

Room air vs carbon dioxide

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · people undergoing laparoscopic general abdominal or gynaecological pelvic surgery under general anaesthesia

It is very uncertain whether room air changes pain scores (first postoperative day) Visual analogue scale, lower… compared with carbon dioxide (very low certainty).

1 finding from 1 review

Nitrous oxide vs carbon dioxide

Participant‐reported pain intensity VAS (0‐10, lower score = less pain) · people undergoing laparoscopic general abdominal or gynaecological pelvic surgery under general anaesthesia

It is very uncertain whether nitrous oxide changes pain scores (first postoperative day) VAS, lower score indicates… compared with carbon dioxide (very low certainty).

1 finding from 1 review

Prophylactic antibiotics vs placebo or no treatment

Surgical site infection · women with urinary stress incontinence undergoing continence surgery

It is very uncertain whether prophylactic antibiotics (single or combined drugs) changes number of surgical site infections (SSIs) before discharge compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Prophylactic antibiotics vs placebo or no treatment

Number of symptomatic UTIs or bacteriuria before discharge · women with urinary stress incontinence undergoing continence surgery

It is very uncertain whether prophylactic antibiotics (single or combined drugs) changes number of symptomatic UTIs or bacteriuria before discharge compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Prophylactic antibiotics vs placebo or no treatment

Febrile morbidity · women with urinary stress incontinence undergoing continence surgery

It is very uncertain whether prophylactic antibiotics (single or combined drugs) changes number of women with febrile morbidity at hospital discharge compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Prophylactic antibiotics vs placebo or no treatment

Mesh exposure · women with urinary stress incontinence undergoing continence surgery

It is very uncertain whether prophylactic antibiotics (single or combined drugs) changes number of mesh exposures within six weeks after the operation compared with placebo or no treatment (very low certainty).

1 finding from 1 review