What breeds are affected by persistent right aortic arch?
There is an increased incidence of this disorder in the Great Dane, German shepherd and Irish setter, relative to other breeds. What does a persistent right aortic arch mean to your dog & you? Signs associated with entrapment of the esophagus usually become apparent shortly after weaning, when the dog begins eating semi-solid or solid food. The partial obstruction of the esophagus causes regurgitation and, over time, dilation of the esophagus ahead of the obstructed area. Dogs with this condition are thin, may be malnourished and have ravenous appetites. They are prone to aspiration pneumonia. These anomalies can be corrected surgically. It is important to do so before there is permanent damage to the esophagus. How is a persistent right aortic arch diagnosed? In a dog that begins regurgitating shortly after weaning, this condition is suspected. Chest x-rays will confirm this, in particular a contrast study with barium which will show the dilated esophagus just ahead of the obstruction
