![]() Vascular Ring Anomalies in DogsPersistent Right Aortic Arch in Dogs
Vascular ring anomalies occur when a congenital abnormality of the heart's blood vessels result in the esophagus being compressed at the level of the base of the heart. This, in turn, prevents solid food from being able to pass properly past the compression as well as the dilatation of the esophagus in front of the compressed area. This is termed megaesophagus. Because food is not moved properly through the esophagus, regurgitation occurs.
Symptoms and Types
German Shepherds, Irish Setters, and Boston Terriers are most commonly affected by vascular ring anomalies. Symptoms of the condition include:
Time between eating and regurgitation varies.
Causes
The cause for vascular ring anomalies in dogs is a developmental congenital abnormality.
Diagnosis
A thorough physical examination and routine blood testing is usually performed. However, imaging is usually necessary for accurate diagnosis. Imaging may include thoracic radiographs (X-rays), contrast esophagography (usually performed with barium), fluoroscopy and/or angiography.
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