Are thrombocytopenia and platelet transfusions associated with major bleeding in preterm neonates? A systematic...

Area of Science:

• Neonatal Medicine
• Hematology
• Clinical Research

Background:

• Over 75% of severely thrombocytopenic preterm neonates receive platelet transfusions.
• Current transfusion guidelines are primarily based on expert opinion rather than robust evidence.
• The association between platelet counts, transfusions, and bleeding risk in neonates requires further investigation.

Purpose of the Study:

• To systematically review the evidence on whether platelet counts, platelet transfusions, or platelet indices are associated with major bleeding in preterm neonates.
• To evaluate the effectiveness of current transfusion practices in preventing bleeding.

Main Methods:

• Systematic literature search of EMBASE and MEDLINE databases up to December 2017.
• Inclusion of randomized trials, cohort studies, and case-control studies.
• Screening of 8734 abstracts and 1225 full-text articles, identifying 36 eligible studies.

Main Results:

• In 30 of the 36 studies, the timing of platelet counts or transfusions relative to bleeding was unclear.
• Two studies indicated thrombocytopenia was associated with increased bleeding risk; two found no association.
• Three studies found no association between platelet transfusions and bleeding risk; no studies assessed platelet indices.

Conclusions:

• The current evidence linking platelet counts or transfusions to major bleeding in preterm neonates is limited and often unclear.
• Prophylactic platelet transfusions may not significantly reduce bleeding risk in this vulnerable population.
• Further high-quality research is needed to establish optimal transfusion guidelines based on platelet indices and timing.