Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

123 questions · 129 findings · 13 reviews

No studies found 28 · 21.7%GRADE not reported 25 · 19.4%Very low 20 · 15.5%Low 26 · 20.2%Moderate 28 · 21.7%High 2 · 1.6%

Tranexamic acid vs placebo (saline solution or sterile water)

Significant adverse events (seizures, thromboembolism) within 24 hours of surgery) · adults and children with chronic rhinosinusitis with or without nasal polyps

Tranexamic acid showed no clear difference in significant adverse events (seizures, thromboembolism) within 24… compared with placebo (saline solution or sterile water) (moderate certainty).

1 finding from 1 review

Tranexamic acid vs placebo (saline solution or sterile water)

Overall rate of surgical complications · adults and children with chronic rhinosinusitis with or without nasal polyps

Tranexamic acid showed no clear difference in surgical complications compared with placebo (saline solution or sterile water) (moderate certainty).

1 finding from 1 review

Tranexamic acid vs placebo (saline solution or sterile water)

Postoperative bleeding (place of packing or revision surgery within 14 days of surgery) · adults and children with chronic rhinosinusitis with or without nasal polyps

Tranexamic acid showed no clear difference in postoperative bleeding (place of packing or revision surgery within… compared with placebo (saline solution or sterile water) (low certainty).

1 finding from 1 review

Tranexamic acid vs placebo + standard care

Control of epistaxis: episodes of re‐bleeding over 10 days All treatments (topical and oral) · adults with nasal haemorrhage (epistaxis)

Tranexamic acid probably leads to lower control of epistaxis: episodes of re‐bleeding over 10 days All… compared with placebo plus usual care or usual care alone (moderate certainty).

1 finding from 1 review

Tranexamic acid vs placebo + standard care

Control of epistaxis: episodes of re‐bleeding over 10 days Oral treatment only · adults with nasal haemorrhage (epistaxis)

Tranexamic acid probably leads to lower control of epistaxis: episodes of re‐bleeding over 10 days Oral… compared with placebo plus usual care or usual care alone (moderate certainty).

1 finding from 1 review

Tranexamic acid vs placebo + standard care

Control of epistaxis: episodes of re‐bleeding over 10 days Topical application (10% gel) only · adults with nasal haemorrhage (epistaxis)

Tranexamic acid showed no clear difference in control of epistaxis: episodes of re‐bleeding over 10 days Topical… compared with placebo plus usual care or usual care alone (low certainty).

1 finding from 1 review

Tranexamic acid vs placebo + standard care

Control of epistaxis: time to stop initial bleeding (proportion of patients whose bleeding is controlled in ≤ 30 minutes) · adults with nasal haemorrhage (epistaxis)

Tranexamic acid showed no clear difference in control of epistaxis: time to stop initial bleeding (proportion of… compared with placebo plus usual care or usual care alone (low certainty).

1 finding from 1 review

Tranexamic acid vs placebo + standard care

Severity of re‐bleeding: proportion of patients requiring blood transfusion within 10 days · adults with nasal haemorrhage (epistaxis)

Tranexamic acid showed no clear difference in severity of re‐bleeding: proportion of patients requiring blood… compared with placebo plus usual care or usual care alone (low certainty).

1 finding from 1 review

Tranexamic acid vs alternative haemostatic agents

Control of epistaxis: time to stop initial bleeding (proportion with bleeding controlled within 10 minutes) · adults with nasal haemorrhage (epistaxis)

Tranexamic acid probably leads to higher control of epistaxis: time to stop initial bleeding (proportion with… compared with other haemostatic agent (moderate certainty).

1 finding from 1 review

Tranexamic acid vs placebo/no treatment

Blood loss > 400 mL or > 500 mL · pregnant women undergoing vaginal or caesarean birth who received TA for the prevention of postpartum haemorrhage

Tranexamic acid probably leads to lower blood loss > 400 mL or > 500 mL compared with placebo/no treatment (moderate certainty).

1 finding from 1 review