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Related Experiment Videos

Interruption of aortic arch in two foals.

E A Scott, A Chaffee, G E Eyster

    Journal of the American Veterinary Medical Association
    |February 1, 1978
    PubMed
    Summary

    Congenital heart defects in foals, including septal defects and aortic arch absence, caused severe weakness and exercise intolerance shortly after birth. These cardiac abnormalities were identified through necropsy in two affected foals.

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    Area of Science:

    • Veterinary Cardiology
    • Equine Neonatal Health

    Background:

    • Foals can develop severe health issues shortly after birth.
    • Congenital cardiovascular abnormalities present significant challenges in neonatal foals.

    Purpose of the Study:

    • To describe clinical and pathological findings in two foals with severe congenital heart defects.
    • To highlight the impact of complex cardiac malformations on foal viability.

    Main Methods:

    • Clinical examination including auscultation.
    • Diagnostic imaging (radiography).
    • Cardiovascular catheterization, blood gas analysis, and necropsy.

    Main Results:

    • Foals presented with exercise intolerance, weakness, and failure to thrive.
    • Physical exam revealed loud systolic murmurs.
    • Necropsy confirmed multiple congenital heart defects: ventricular septal defect, atrial septal defect, patent ductus arteriosus, and absent aortic arch. One foal had anomalous cranial vena cava drainage.

    Conclusions:

    • Severe congenital cardiac malformations can manifest rapidly in neonatal foals.
    • Early identification and understanding of these defects are crucial for prognosis and management.
    • Complex cardiac anomalies pose a significant risk to foal survival.

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