Various formula to assess platelet transfusion refractoriness (modified from Rebulla,1993).
Post-transfusion platelet increment (PPI)=(post-transfusion platelet count)-(pre-transfusion platelet count) |
|
|
Percentage platelet increment (PPI)=PPR/0.67 (0.67 accounts for splenic pooling) |
Abbreviations: BSA, body surface area; TBV, total blood volume.