Which hemorrhage pattern is most characteristic of severe factor VIII deficiency?

Which hemorrhage pattern is most characteristic of severe factor VIII deficiency?

• A. Severe hemorrhage following moderate to severe trauma
• B. Spontaneous hemarthosis
• C. Gynecologic hemorrhage
• D. Gross bleeding after mild trauma

Answer: (B)

Spontaneous joint bleeding is the hallmark feature of severe factor VIII deficiency. Factor VIII is a key cofactor in the intrinsic coagulation pathway; when it is severely deficient, the blood’s ability to form a stable clot is markedly impaired. Joints have a rich blood supply and are subject to mechanical stress, so even minimal, everyday microtrauma can trigger bleeding into the joint space. Over time, repeated spontaneous hemarthroses lead to joint swelling, pain, and reduced range of motion—classic signs that point to a hemophilia presentation. Among the patterns listed, bleeding into joints without any obvious triggering trauma best fits severe factor VIII deficiency. Bleeding after moderate to severe trauma, gynecologic hemorrhage, or bleeding after mild trauma can occur in various bleeding disorders, but spontaneous hemarthrosis is especially characteristic of severe hemophilia A.

Spontaneous joint bleeding is the hallmark feature of severe factor VIII deficiency. Factor VIII is a key cofactor in the intrinsic coagulation pathway; when it is severely deficient, the blood’s ability to form a stable clot is markedly impaired. Joints have a rich blood supply and are subject to mechanical stress, so even minimal, everyday microtrauma can trigger bleeding into the joint space. Over time, repeated spontaneous hemarthroses lead to joint swelling, pain, and reduced range of motion—classic signs that point to a hemophilia presentation.

Among the patterns listed, bleeding into joints without any obvious triggering trauma best fits severe factor VIII deficiency. Bleeding after moderate to severe trauma, gynecologic hemorrhage, or bleeding after mild trauma can occur in various bleeding disorders, but spontaneous hemarthrosis is especially characteristic of severe hemophilia A.