Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

271 questions · 277 findings · 30 reviews · Headline outcomes only

No studies found 31 · 11.2%GRADE not reported 10 · 3.6%Very low 93 · 33.6%Low 64 · 23.1%Moderate 65 · 23.5%High 14 · 5.1%

Topical prophylaxis vs no topical prophylaxis

Respiratory tract infections ‐ topical plus systemic prophylaxis versus systemic prophylaxis alone · adults receiving mechanical ventilation for at least 48 hours

Topical prophylaxis showed no clear difference in respiratory tract infections ‐ topical plus systemic prophylaxis… compared with no topical prophylaxis (low certainty).

1 finding from 1 review

Topical prophylaxis vs no topical prophylaxis

Respiratory infections · adults receiving mechanical ventilation for at least 48 hours

Topical prophylaxis may leads to lower respiratory tract infections ‐ topical prophylaxis versus no… compared with no topical prophylaxis (low certainty).

2 findings from 1 review

Topical prophylaxis vs no topical prophylaxis

Overall mortality ‐ topical plus systemic prophylaxis versus systemic prophylaxis alone · adults receiving mechanical ventilation for at least 48 hours

Topical prophylaxis showed no clear difference in overall mortality ‐ topical plus systemic prophylaxis versus… compared with no topical prophylaxis (low certainty).

1 finding from 1 review

Topical prophylaxis vs no topical prophylaxis

Overall mortality ‐ topical prophylaxis versus placebo or no treatment · adults receiving mechanical ventilation for at least 48 hours

Topical prophylaxis showed no clear difference in overall mortality ‐ topical prophylaxis versus placebo or no treatment compared with no topical prophylaxis (moderate certainty).

1 finding from 1 review

Full‐mouth ultrasonic scaling plus photodynamic therapy vs full‐mouth ultrasonic scaling alone

Resolution or reduction in severity of any other dental complication: systemic infections (measured by number of episodes after treatment for dental complications under antibiotic prophylaxis) · people with thalassaemia (any age)

The review found no eligible studies for this question.

1 finding from 1 review