PTT is prolonged in all except:-: (A) Hemophilia A, (B) Von Willebrand disease, (C) Christmas disease, (D) ITP
Answer is D. aPTT is used to monitor the activity of Intrinsic pathway. (A.) Hemophilia (B.) Von Willebrand disease C.) Christmas disease (D.) ITP - Idiopathic Thrombocytopenic Purpura most common type of hemophilia is Hemophilia A . Hemophilia A - Factor VIII deficiency | | aPTT Associated with reduction in the half life of Factor VIII | | aPTT Factor IX deficiency || aPTT Disease associated with |platelets, not a clotting factor problem. Parameters affected in ITP a. Increase bleeding time* b. Decrease platelet count