Right aortic arch in a lamb and two pigs

Ingh, T. S. G. A. M. van den; Linde‐Sipman, J. S. van der

doi:10.1080/01652176.1986.9694015

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…The left sixth arch forms the ductus arteriosus and the right sixth arch forms the pulmonary artery (Arey 1974). PRAA anomalies develop when the right fourth arch instead of the left fourth arch forms the aorta (van den Ingh and van der Linde‐Sipman 1986). The right arch descends to the right of the midline and so the left ductus arteriosus, which later becomes the ligamentum arteriosum, forms a strap between the left pulmonary artery and the anomalous right aorta, surrounding the oesophagus and trachea (Bartels and Vaughan 1969).…”

Section: Figurementioning

confidence: 99%

Persistent right aortic arch in a mature llama

2001

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Section: Figurementioning

confidence: 99%

Persistent right aortic arch in a mature llama

2001

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“…[2][3][4][5] Farm animals, including horses, cattle, bison, sheep, and camelids, have also reportedly been affected by PRAAs. [6][7][8][9][10][11][12][13] With a VRA, the esophagus is compressed within a loop of blood vessels or their vestige. The most common anomaly is a ring formed by the right aortic arch and left LA, with the heart base caudoventral to the ring and the pulmonary trunk cranioventral.…”

Section: Introductionmentioning

confidence: 99%

“…A vascular ring formed by a persistent right aortic arch (PRAA) and a left ligamentum arteriosum (LA), causing entrapment and compression of the esophagus and trachea, is the most common type of VRA affecting dogs and cats 2–5 . Farm animals, including horses, cattle, bison, sheep, and camelids, have also reportedly been affected by PRAAs 6–13 . With a VRA, the esophagus is compressed within a loop of blood vessels or their vestige.…”

Section: Introductionmentioning

confidence: 99%

Resolution of chronic regurgitation in an 8 month old Babydoll sheep by thoracoscopic treatment of a vascular ring anomaly

McOnie,

Buote,

Hackett

et al. 2024

Veterinary Surgery

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ObjectiveThe objective was to describe the successful thoracoscopic treatment of esophageal entrapment resulting from a vascular ring anomaly (VRA) comprising a persistent right aortic arch (PRAA) and left ligamentum arteriosum (LA) in a Babydoll sheep wether.Study designCase report.AnimalEight month old Babydoll sheep wether, 13 kg.MethodsThe patient presented with a weight half that of its sibling, persistent regurgitation following eating, and delayed growth noted from the age of approximately 2 months, coinciding with the introduction of solid feed into the diet. Plain thoracic radiographs were within normal limits but computed tomography angiography (CTA) confirmed multiple congenital vascular anomalies. The primary finding was esophageal and tracheal entrapment by a PRAA and left LA. Thoracoscopic transection of the LA was performed with a bipolar vessel sealing device with the aid of transesophageal endoscopy.ResultsImmediate improvement in attitude and absence of regurgitation were observed. The patient was discharged and subsequently reintroduced to grazing and long‐stem hay, which were previously not tolerated. By 6 months post discharge, the patient's weight was 36 kg, comparable to an age‐matched sibling and considered appropriate for the stage of growth.ConclusionThoracoscopic transection of the LA in sheep is a feasible treatment for esophageal compression resulting from a VRA. Surgical intervention resolved the clinical signs and allowed normal digestive rumination, restoring bidirectional esophageal function in a ruminant.

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Persistent Right Aortic Arch in a Yearling Captive Wood Bison (Bison Bison Athabascae)

2002

Journal of Zoo and Wildlife Medicine

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An undersized, 16-mo-old, captive wood bison (Bison bison athabascae) was observed with dysphagia and postprandial regurgitation. The animal died shortly after anesthesia was initiated for diagnostic purposes. At necropsy, a persistent right aortic arch and aberrant left subclavian artery were diagnosed. The vascular ring structure around the esophagus and the trachea caused a megaesophagus with complete esophageal obstipation and ulcerative esophagitis. The aberrant left subclavian artery did not significantly compromise the esophagus. Persistence of the right aortic arch is relatively rare in ruminants and has not previously been reported in a bison.

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Right aortic arch in a lamb and two pigs

Cited by 5 publications

References 6 publications

Persistent right aortic arch in a mature llama

Persistent right aortic arch in a mature llama

Resolution of chronic regurgitation in an 8 month old Babydoll sheep by thoracoscopic treatment of a vascular ring anomaly

Persistent Right Aortic Arch in a Yearling Captive Wood Bison (Bison Bison Athabascae)

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