More
    Categories

    Atrial Septal Defect

    Related Articles

    What Is Atrial Septal Defect?

    Atrial septal defect (ASD) is a congenital abnormality of the upper chambers of the heart marked by the failure of the wall between the right and left atria to close completely. Although ASD has been considered relatively rare in veterinary medicine, the current thinking is that its incidence in dogs is in fact much higher than previously thought, representing the second most commonly diagnosed congenital heart defect after mitral valve dysplasia.

    Approximately 30% of animals with atrial septal defect also have one or more other congenital heart defects, including mitral valve dysplasia, dilated cardiomyopathy, and subaortic stenosis, one of the most common congenital cardiac anomalies in dogs.4 The Boxer and Domestic Shorthair cat are the most common canine and feline breeds affected.

    Signs & Symptoms

    Common signs include a heart murmur, exercise intolerance, fainting, difficulty breathing and cough. However, the majority of affected dogs and cats have no signs at all.2

    Diagnosis

    Modern echocardiographic and Doppler echocardiography currently offer a good view of the abnormalities facilitating earlier detection of ASD in awake animals.

    Prognosis

    The long-term prognosis for dogs with isolated and small-sized ASD is usually good but can be compromised by the presence of concurrent congenital or acquired cardiac diseases.3

    Video Credits: Osmosis

    References

    1. Medline Plus – Atrial Septal Defect
    2. Chetboul et al. – Retrospective Study Of 156 Atrial Septal Defects In Dogs And Cats
    3. Guglielmini et al. – Atrial Septal Defect In Five Dogs

    Categories

    Other Topics

    Ca De Bou (Majorca Mastiff)

    History & Overview The Majorca Mastiff, also known as Ca de Bou (Catalonian for "bull dog"), is a...

    Angelfish

    Appearance The Angelfish (Pterophyllum scalare) live in coral reefs and are famous for their striking patterns and colors....

    Karelian Bear Dog (Karjalankarhukoira)

    History & Overview The Karelian Bear Dog, or Karjalankarhukoira, is a medium-sized, strong and robust dog which is...

    Mudi

    Overview The Mudi originated in Hungary and is not yet well known outside its native country. Shepherds highly...

    Laughing Gull

    Overview Laughing Gulls (Leucophaeus atricilla) are never found far from the coast, though small groups visit freshwater to bathe...