1. Treatment of Specific Hemorrhages in Hemophilia 2. Calculation of Doses
Hemarthrosis *** Hemophilia A- 20 U/Kg factor VIII concentrate; 15 U/Kg if treated early; repeat dose the following day if severe bleed. *** Hemophilia B- 30 U/Kg factor IX concentrate; 20 U/Kg if treated early ____________________________________________ Muscle or subcutaneous hematoma: *** Hemophilia A- 20 U/Kg factor VIII concentrate; Q48 hr until well controlled. *** Hemophilia B- 30 U/Kg factor IX concentrate. May need Q2-3 d treatment until well controlled ____________________________________________ Epistaxis *** Hemophilia A 20 U/Kg factor VIII concentrate if other measures fail *** Hemophilia B 30 U/Kg factor IX concentrate if other measures fail NOTE: need to try antifibrinolytic therapy first. ____________________________________________ Major surgery or life threatening hemorrhage *** Hemophilia A- 50 U/Kg factor VIII concentrate, followed by 25 U/Kg Q12 (or C.I.) to maintain factor VIII level above 50 U/Dl for 5-7 days & then to maintain factor VIII level above 30 U/Dl for 5-7 days *** Hemophilia B- 80 U/Kg factor IX concentrate followed by 20-40 U/Kg Q12-24 hr to maintain factor level above 40 U/Dl for 5-7 days then to maintain factor level above 30 U/dl for 5-7 days ____________________________________________ Ileopsoas Hemorrhage Hemophilia A- 50 U/Kg factor VIII concentrate followed by 25 U/Kg until symptoms relieved then 20 U Q 48 hr for 10-14 days Hemophilia B- 80 U/Kg factor IX concecntrate then20-40 U/Kg Q12-24 hrs to maintain levels above 40 U/dl until asymptomatic then 30 U Q 48 hours for 10-14 days ____________________________________________ Hematuria Hemophilia A- If other measures fail in 48 hours then try 20 U/Kg factor VIII concentrate (may try prednisone) Hemophilia B- If other measures fail then try 30 U/Kg factor IX concentrate (may try prednisone) ____________________________________________
Calculation of doses ---------------------------- Hemophilia A: Dose needed(U)=% desired rise plasma factor VIII X Body Weight (Kg) X 0.5
Hemophilia B: Dose needed (IU) = % desired rise X Body Weight (Kg)