Coagulation factor VII (FVII) is a vitamin K dependent glycoprotein of the extrinsic pathway and initiates coagulation by binding to tissue factor. Activated prothrombin-complex concentrate ([APCC] FEIBA), an activated prothrombin complex concentrate that is plasma-derived, has also been demonstrated to bypass the need for FVIII or factor IX, resulting in hemostasis. Both APCC and recombinant f...

Bleeding symptoms are common in healthy children but occasionally may indicate an underlying congenital or acquired bleeding diathesis. The rare bleeding disorders (RBDs) comprise inherited deficiencies of coagulation factors I (congenital fibrinogen deficiencies), II, V, VII, X, XI, and XIII and combined factor deficiencies, most notably of factors V and VIII and of vitamin K-dependent factors...

BACKGROUND Factor V deficiency is a rare autosomal recessive coagulation disorder. Awareness of presenting features and management is important to avoid bleeding complications associated with mortality and neurodisability. CASE PRESENTATION A 6-day-old Pakistani boy was admitted with bleeding from the left nipple. His parents were first cousins. A coagulation screen showed a prothrombin time ...

Dear Sirs, Individual coagulation factor inhibitors and lupus anticoagulants generally result in prolonged clotting times in coagulation assays. By far the most frequently occurring individual coagulation factor inhibitors are allo-antibodies against factor (F) VIII and FIX. These inhibitors arise in 10–30% of haemophilia A and 4–5% of haemophilia B patients treated with FVIII or FIX concentrat...

Factor IX concentrates were evaluated for their factor VII content and for the presence of activated factor VII through use of a coupled amidolytic assay insensitive to activated factor VII and a clotting assay sensitive to activated factor VII. The factor VII content of the concentrates studied (except for one concentrate purposely produced to exclude factor VII) varied between 33 and 621 U/vi...