📝 “What are the Different Types of Hemophilia?”

Quick Review #266 - #pathology #oralpathology #doctorgallagher #oralsurgery #oralsurgeon #dentist #dentistry #dental #hemophiliaHemophilia is a group of inherited bleeding disorders caused by deficiencies in specific clotting factors, leading to impaired blood coagulation and prolonged bleeding.1 - Hemophilia A (Classic Hemophilia)​ Deficient Factor: Factor VIII (FVIII)​ Genetic Basis: X-linked recessive disorder, primarily affecting males​ Prevalence: The most common form, occurring in approximately 1 in 5,000 male births​ Pathophysiology: Factor VIII is crucial in the intrinsic coagulation pathway, serving as a cofactor for Factor IX in the conversion of Factor X to its active form. Without FVIII, thrombin generation is significantly reduced, resulting in unstable clot formation and prolonged bleeding.​ Clinical Manifestations:​ Spontaneous or excessive bleeding after minor trauma​ Hemarthrosis (bleeding into joints, especially knees, elbows, and ankles)​ Muscle hematomas and deep tissue hemorrhages​ Intracranial hemorrhages, which can be life-threatening​ Prolonged bleeding following surgery or dental procedures2 - Hemophilia B (Christmas Disease)​ Deficient Factor: Factor IX (FIX)​ Genetic Basis: X-linked recessive disorder, similar to Hemophilia A​ Prevalence: Affects approximately 1 in 25,000 male births​ Pathophysiology: Factor IX is a serine protease involved in activating Factor X within the intrinsic coagulation pathway. Its deficiency results in impaired thrombin production, leading to defective clot formation and prolonged bleeding, similar to Hemophilia A.​ Clinical Manifestations:​ Indistinguishable from Hemophilia A​ Frequent spontaneous joint and muscle hemorrhages​ Prolonged bleeding following trauma or surgical procedures.3 - Hemophilia C (Factor XI Deficiency)​ Deficient Factor: Factor XI (FXI)​ Genetic Basis: Autosomal recessive disorder, affecting both males and females​ Prevalence: More commonly observed in Ashkenazi Jewish populations​ Pathophysiology: Factor XI is part of the intrinsic coagulation pathway, though it plays a less critical role than FVIII and FIX. Its deficiency leads to variable bleeding patterns, with symptoms generally milder than those seen in Hemophilia A and B.​ Clinical Manifestations:​ Mild to moderate bleeding tendencies​ Prolonged bleeding after surgical procedures, particularly in dental extractions, tonsillectomies, and other invasive proceduresReferences:​ Phasura, A. (n.d.). Hemophilia: Damaged blood vessel, Haemophilia coagulation disorder​ Peyvandi, F., Garagiola, I., & Young, G. (2016). The past and future of hemophilia: Diagnosis, treatments, and its complications. The Lancet, 388(10040), 187–197​ Franchini, M., & Mannucci, P. M. (2013). Hemophilia A and hemophilia B: The role of coagulation factors and current treatment. Blood Transfusion, 11(4), 487–493​ ChatGPT.2025#podcast #dentalpodcast #doctorgallagherpodcast #doctorgallagherspodcast #doctor #dentist #dentistry #oralsurgery #dental #dentalschool #dentalstudent #doctorlife #dentistlife #oralsurgeon #doctorgallagher 2.11.2025