Surgical treatment of a double aortic arch in a dog

An 8-month-old spayed female Labrador retriever dog was evaluated for regurgitation 6 months after surgery for a suspected vascular ring anomaly. The dog had a history of regurgitation and slow development as a puppy. An initial left-sided exploratory thoracotomy was unsuccessful in identifying and...

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Bibliographic Details
Published in:Canadian veterinary journal 2021-08, Vol.62 (8), p.872-876
Main Authors: Sekhar, Maya, Meyers, Katherine, Volk, Susan W, Holt, David E
Format: Article
Language:English
Subjects:
Angiography
Animals
Aorta, Thoracic - diagnostic imaging
Aorta, Thoracic - surgery
Dog Diseases - diagnostic imaging
Dog Diseases - surgery
Dogs
Esophagus
Female
Scientific
Thoracotomy - veterinary
Vascular Ring - veterinary
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Summary:An 8-month-old spayed female Labrador retriever dog was evaluated for regurgitation 6 months after surgery for a suspected vascular ring anomaly. The dog had a history of regurgitation and slow development as a puppy. An initial left-sided exploratory thoracotomy was unsuccessful in identifying and treating a vascular ring anomaly. The dog was subsequently presented to the PennVet Emergency Service for regurgitation. Thoracic radiography showed cranial thoracic esophageal dilation and an esophageal foreign body that was then removed endoscopically. Subsequent computed tomographic (CT) angiography revealed a double aortic arch. A left 4th intercostal space thoracotomy was performed. The smaller left aortic arch and a left ligamentum arteriosum were ligated and transected. The dog recovered uneventfully and was healthy at the 1-month follow-up visit. This is the 5th reported successful surgical correction of a double aortic arch in a dog. Computed tomographic angiography was essential in diagnosis and surgical planning. Key clinical message: Although uncommon, double aortic arches can occur and present a diagnostic and surgical challenge when a persistent right aortic arch is suspected. Computed tomographic angiography provides an accurate preoperative diagnosis and allows for surgical planning.
ISSN:0008-5286