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Related Experiment Videos

Factor IX deficiency in an Alaskan Malamute.

M E Peterson, W J Dodds

    Journal of the American Veterinary Medical Association
    |June 15, 1979
    PubMed
    Summary

    A 6-month-old Alaskan Malamute diagnosed with hemophilia B showed severe factor IX deficiency. This intrinsic coagulation defect caused persistent oral bleeding, differentiating it from hemophilia A.

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    Area of Science:

    • Veterinary Hematology
    • Canine Coagulation Disorders
    • Genetic Diseases in Animals

    Background:

    • Hemophilia B is a rare inherited bleeding disorder caused by deficiency in coagulation factor IX.
    • Distinguishing between hemophilia A and B is crucial for accurate diagnosis and treatment in affected animals.
    • Canine coagulation disorders can present with varied clinical signs, including prolonged bleeding.

    Observation:

    • A 6-month-old male Alaskan Malamute presented with a two-week history of persistent oozing from an oral wound.
    • Initial clinical suspicion pointed towards hemophilia A due to the observed bleeding tendency.
    • Laboratory evaluation revealed an intrinsic coagulation defect.

    Findings:

    • Further diagnostic tests confirmed normal levels of factor VIII activity and factor VIII-related antigen, ruling out hemophilia A.
    • Crucially, the dog's factor IX activity was measured at only 1.3% of the normal level.
    • This severe deficiency in factor IX confirmed the diagnosis of hemophilia B.

    Implications:

    • This case highlights the importance of comprehensive coagulation factor analysis in diagnosing bleeding disorders in dogs.
    • Accurate diagnosis of hemophilia B allows for targeted management and potential genetic counseling.
    • Understanding the specific factor deficiency is critical for predicting prognosis and treatment strategies in affected canine patients.

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