transfusion trigger

transfusion trigger

Transfusion threshold Transfusion medicine The Hct and Hb values at or below which packed red cells are usually ordered for transfusion by a clinician; the most widely used current TT is a Hb of 70 g/L, after an NIH consensus = conference; lower TTs–eg, transfusion at 7g Hb, have better outcomes–eg, ↓ MIs and ↓ pulmonary edema 'Prophylactic' platelet TT Stable Pts < 5 x 109, Pts with recent hemorrhage and/or temperature ≥ 38.5º C < 10 x 109, Pts with significant coagulopathy, anatomic lesion(s), or heparin therapy < 20 x 109 'Therapeutic' platelet TT Active hemorrhage or scheduled invasive procedure < 50 x 109, hemorrhage and/or thrombocytopenia, prn