Factor VII Deficiency in Dogs

Factor VII deficiency is a genetic bleeding disorder characterized by a deficiency in factor VII, a protein essential for blood clotting
Condition Snapshot
  • Name:

Factor VII Deficiency

  • Other Name(s):

-
  • Acronym(s):

FVII Deficiency
  • Severity:

/5
  • Genetic:

Yes
  • Idiopathic:

No
  • Predisposed Breeds:

Yes
  • Onset Age:

Young Adult

Overview

Factor VII deficiency, also known as FVII deficiency, is an uncommon genetic disorder affecting dogs. It involves a deficiency in factor VII, a protein important for blood clotting. Dogs with this condition experience prolonged bleeding times, leading to various health challenges. While factor VII deficiency is relatively uncommon, certain breeds show a higher prevalence because of genetic predisposition. Severity varies, with some dogs showing mild symptoms and others experiencing severe bleeding problems.

Causes

The primary cause of factor VII deficiency is a genetic mutation. This mutation affects the production or function of factor VII, an important part of the blood clotting process. Since it is a hereditary condition, dogs inherit it from their parents.

There are no secondary causes for factor VII deficiency, as it is strictly a genetic disorder. Other contributing factors do not exist. This makes identifying affected dogs and potential carriers through genetic testing important in managing the condition.

Risk factors for factor VII deficiency include breed predisposition and family history. Breeds with a known genetic tendency for this condition are more susceptible, highlighting the importance of selective breeding practices to reduce incidence.

Predisposed Breeds

Breeds predisposed to factor vii deficiency include:

Symptoms

Primary symptoms of factor VII deficiency in dogs include prolonged bleeding after surgery or injury, spontaneous bleeding, and excessive bruising. These symptoms may arise unexpectedly and require immediate veterinary attention.

Secondary symptoms may include nosebleeds, blood in urine or feces, and joint bleeding. These signs indicate underlying clotting issues and should not be ignored. Early detection is key to preventing complications.

Other symptoms can include anemia because of chronic blood loss and lethargy. Anemia results from the body’s inability to compensate for blood loss, leading to reduced energy levels and overall weakness in affected dogs.

Factor vii deficiency symptoms include:

  • Prolonged bleeding after injury
  • Spontaneous bleeding
  • Excessive bruising
  • Nosebleeds
  • Blood in urine
  • Joint bleeding
  • Anemia

Diagnosis

Diagnosing factor VII deficiency involves blood tests to measure clotting times. Specific assays determine factor VII activity levels, important for identifying the disorder. Genetic testing confirms the mutation, ensuring correct diagnosis.

Veterinarians should differentiate factor VII deficiency from other conditions, like von Willebrand disease, hemophilia, and liver disease. Correct diagnosis is essential for appropriate treatment and management strategies tailored to the dog’s needs.

Clinical and physical examinations help assess the severity of symptoms. Veterinarians may also use imaging tests to rule out other conditions and confirm factor VII deficiency, ensuring comprehensive care for affected dogs.

Treatment

Treatment for factor VII deficiency may involve administering fresh frozen plasma or blood transfusions during bleeding episodes. These treatments provide the missing clotting factor, controlling bleeding and preventing severe complications.

Veterinary guidance is important in managing factor VII deficiency. Medications that promote clotting may be used sometimes, depending on the severity of symptoms. Regular check-ups ensure the treatment plan remains effective and adapts to the dog’s needs.

Tip: Monitor your dog closely for any signs of bleeding and consult your veterinarian promptly to adjust treatment as needed.

Management

Long-term management of factor VII deficiency includes regular monitoring for signs of bleeding. Avoiding trauma is important to prevent unnecessary bleeding episodes. Work closely with your veterinarian to develop a comprehensive management plan.

Medications that promote clotting may be used under veterinary guidance, ensuring they suit the dog’s specific condition. Lifestyle changes, such as avoiding rough play, contribute significantly to managing symptoms and improving quality of life.

Tip: Maintain a detailed record of your dog’s bleeding episodes and symptoms to help your veterinarian tailor management strategies effectively.

Prevention

Preventing factor VII deficiency involves genetic testing to identify carriers and affected dogs. Responsible breeding practices can help reduce the incidence of this genetic disorder, promoting healthier future generations of dogs.

While no specific diet or lifestyle changes can prevent the condition, early detection through genetic testing is important. Identifying carriers lets breeders make informed decisions, preventing the transmission of the genetic mutation.

Tip: Ensure your dog undergoes genetic testing if they belong to a predisposed breed or have a family history of factor VII deficiency.
Sources
  • Penn Vet | Genetic Tests: https://www.vet.upenn.edu/research/academic-departments/clinical-sciences-advanced-medicine/research-labs-centers/penngen/penngen-tests/genetic-tests/Detail/11/. Accessed November 28, 2023.
  • Bleeding Disorders in Animals – WSAVA2005 – VIN: https://www.vin.com/apputil/content/defaultadv1.aspx?pId=11196&catId=30756&id=3854231. Accessed November 28, 2023.
  • Factor VII Deficiency | Veterinary Genetics Laboratory: https://vgl.ucdavis.edu/test/factor-vii-deficiency. Accessed November 28, 2023.
About the Author
Editorial Standards:

Our team of experts independently writes all conditions and diseases facts and information to ensure they are trustworthy, accurate, and up-to-date. Learn about our fact-checking process and editorial standards.

Medical Disclaimer:

All conditions and diseases facts and information are only for informational and educational purposes. They are not veterinary advice, diagnosis, or treatment. We encourage dog owners and potential dog owners to conduct personal research and seek expert advice tailored to their circumstances.