Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

130 questions · 134 findings · 10 reviews · Haematology

No studies found 43 · 32.1%GRADE not reported 16 · 11.9%Very low 32 · 23.9%Low 30 · 22.4%Moderate 11 · 8.2%High 2 · 1.5%

Prophylactic platelet transfusion vs non prophylactic or therapeutic platelet transfusion

Bleeding: Numbers of patients with at least one significant bleeding event · People with a haematological disorder

Prophylactic platelet transfusion showed no clear difference in bleeding: Numbers of patients with at least one significant bleeding… compared with non prophylactic or therapeutic platelet transfusion (low certainty).

1 finding from 1 review

Prophylactic platelet transfusion vs non prophylactic or therapeutic platelet transfusion

Bleeding: Number of days on which a significant bleeding event occurred3 · People with a haematological disorder

Prophylactic platelet transfusion showed no clear difference in bleeding: Number of days on which a significant bleeding event… compared with non prophylactic or therapeutic platelet transfusion (low certainty).

1 finding from 1 review

Prophylactic platelet transfusion vs non prophylactic or therapeutic platelet transfusion

Mortality: secondary to bleeding · People with a haematological disorder

Prophylactic platelet transfusion showed no clear difference in mortality: Secondary to bleeding compared with non prophylactic or therapeutic platelet transfusion (low certainty).

1 finding from 1 review

Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery

All‐cause mortality within 30 days of surgery · people with a low platelet count

It is very uncertain whether prophylactic platelet transfusion prior to surgery changes all‐cause mortality within 30 days of surgery compared with no prophylactic platelet transfusion prior to surgery (very low certainty).

1 finding from 1 review

Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery

Number of participants with major bleeding within 7 days of surgery (surgical site bleeding requiring a second intervention or reoperation or surgical site bleeding that causes a haematoma or haemarthrosis of sufficient size to delay mobilisation ... · people with a low platelet count

It is very uncertain whether prophylactic platelet transfusion prior to surgery changes number of participants with major bleeding within 7 days of surgery… compared with no prophylactic platelet transfusion prior to surgery (very low certainty).

1 finding from 1 review

Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery

Number of participants with minor procedure‐related bleeding within 7 days of surgery · people with a low platelet count

It is very uncertain whether prophylactic platelet transfusion prior to surgery changes the number of participants with minor procedure‐related bleeding… compared with no prophylactic platelet transfusion prior to surgery (very low certainty).

1 finding from 1 review

Therapeutic or non‐prophylactic platelet transfusion vs prophylactic platelet transfusion

Number of participants with at least 1 bleeding episode · patients with haematological disorders undergoing myelosuppressive chemotherapy or stem cell transplantation
1 finding from 1 review

Therapeutic or non‐prophylactic platelet transfusion vs prophylactic platelet transfusion

Bleeding: Number of days on which a significant bleeding event occurred3 · patients with haematological disorders undergoing myelosuppressive chemotherapy or stem cell transplantation
1 finding from 1 review

Therapeutic or non‐prophylactic platelet transfusion vs prophylactic platelet transfusion

Number of participants with severe or life‐threatening bleeding · patients with haematological disorders undergoing myelosuppressive chemotherapy or stem cell transplantation

Therapeutic or non‐prophylactic platelet transfusion showed no clear difference in number of participants with severe or life‐threatening bleeding up… compared with prophylactic platelet transfusion (low certainty).

1 finding from 1 review

Therapeutic or non‐prophylactic platelet transfusion vs prophylactic platelet transfusion

Mortality from all causes up to 30 days from study entry · patients with haematological disorders undergoing myelosuppressive chemotherapy or stem cell transplantation
1 finding from 1 review

Therapeutic or non‐prophylactic platelet transfusion vs prophylactic platelet transfusion

Number of platelet transfusions per participant up to 30 days from study entry · patients with haematological disorders undergoing myelosuppressive chemotherapy or stem cell transplantation
1 finding from 1 review

Prophylactic platelet transfusion with one dose schedule vs prophylactic platelet transfusions with another dose schedule

Bleeding: Numbers of patients with at least one significant bleeding event · People with a haematological disorder

Prophylactic platelet transfusion with one dose schedule showed no clear difference in bleeding Number of participants with a significant bleeding event ‐… compared with prophylactic platelet transfusions with another dose schedule (high certainty).

2 findings from 1 review

Prophylactic platelet transfusion with one dose schedule vs prophylactic platelet transfusions with another dose schedule

Bleeding Number of days with significant bleeding ‐ Low dosage platelet transfusions versus standard dosage platelet transfusions · People with a haematological disorder
1 finding from 1 review