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      Local Hemodynamic Changes Immediately after Correction of an Aberrant Right Subclavian Artery in a Dog: A Contrast Computed Tomographic Study

      case-report

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          Abstract

          A 1-year-old female Akita dog was referred for intermittent regurgitation. Computed tomographic angiography (CTA) showed an aberrant right subclavian artery (ARSA), resulting in constriction of the esophagus. After surgical ligation of the ARSA, CTA showed that the ARSA was not enhanced by contrast medium, and that sufficient collateral circulation of the right forelimb was supplied through the vertebral artery. Furthermore, the right and left vertebral arteries merged into the basilar artery at the level of the atlas, and no abnormal expansion of the ventral spinal artery was observed. Overall, we demonstrated the importance of post-surgical CTA for identification of surgical complications, including the formation of abnormal vessel alterations.

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          A review of subclavian steal syndrome with clinical correlation

          Stephen Osiro, Anna Żurada, Jerzy S. Gielecki … (2012)
          Summary Subclavian ‘steal’ phenomenon is a function of the proximal subclavian artery (SA) steno-occlusive disease, with subsequent retrograde blood flow in the ipsilateral vertebral artery (VA). The symptoms from the compromised vertebrobasilar and brachial blood flows constitute the subclavian steal syndrome (SSS), and include paroxysmal vertigo, drop attacks and/or arm claudication. Once thought to be rare, the emergence of new imaging techniques has drastically improved its diagnosis and prevalence. The syndrome, however, remains characteristically asymptomatic and solely poses no serious danger to the brain. Recent studies have shown a linear correlation between increasing arm blood pressure difference with the occurrence of symptoms. Atherosclerosis of the SA remains the most common cause. Doppler ultrasound is a useful screening tool, but the diagnosis must be confirmed by CT or MR angiography. Conservative treatment is the initial best therapy for this syndrome, with surgery reserved for refractory symptomatic cases. Percutaneous angioplasty and stenting, rather than bypass grafts of the subclavian artery, is the widely favored surgical approach. Nevertheless, large, prospective, randomized, controlled trials are needed to compare the long-term patency rates between the endovascular and open surgical techniques.
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            Reversal of blood flow through the vertebral artery and its effect on cerebral circulation.

            H Hölling, M Reivich, Michael Toole … (1961)
            Article 0 comments Cited 31 times – based on 0 reviews     Review now
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              Anomalous origins of the right subclavian and common carotid arteries in the dog.

              A Bezuidenhout (1989)
              Anomalous origins of the right subclavian and common carotid arteries in a 6-month old Alsatian bitch are described. The first vessel to branch from the aortic arch was a short bicarotid trunk which divided into left and right common carotid arteries. The right common carotid artery was partially occluded at its origin and its function and area of supply was taken over by the right vertebral artery. The right subclavian artery branched directly from the aortic arch and passed dorsally to the oesophagus, forming an incomplete vascular ring around the oesophagus. Although the oesophagus was constricted between the vessel dorsally and the trachea ventrally, it did not cause obstruction or dysphagia. The right vertebral artery was exceptionally large.
              Article 0 comments Cited 7 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                Federico Corletto: Role: Academic Editor
                Journal
                Journal ID (nlm-ta): Vet Sci
                Journal ID (iso-abbrev): Vet Sci
                Journal ID (publisher-id): vetsci
                Title: Veterinary Sciences
                Publisher: MDPI
                ISSN (Electronic): 2306-7381
                Publication date (Electronic): 08 June 2021
                Publication date Collection: June 2021
                Volume: 8
                Issue: 6
                Electronic Location Identifier: 104
                Affiliations
                [1 ]Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime 794-8555, Japan; y-mochizuki@ 123456vet.ous.ac.jp (Y.M.); s-mikawa@ 123456vet.ous.ac.jp (S.M.); k-sugimoto@ 123456vet.ous.ac.jp (K.S.); a-oonishi@ 123456vet.ous.ac.jp (A.O.); ka-saeki@ 123456vet.ous.ac.jp (K.S.); y-shimizu@ 123456vet.ous.ac.jp (Y.S.); t-kanda@ 123456vet.ous.ac.jp (T.K.); t-asanuma@ 123456vet.ous.ac.jp (T.A.)
                [2 ]Sigenobu Animal Hospital, 1054-1 Ushibuchi, Toon, Ehime 791-0213, Japan; zeek1hs@ 123456hotmail.com
                Author notes
                [* ]Correspondence: k-kutara@ 123456vet.ous.ac.jp ; Tel.: +81-898-52-9238
                [†]

                These authors contributed equally to this work.

                Author information
                https://orcid.org/0000-0003-3662-1864
                https://orcid.org/0000-0001-7160-992X
                https://orcid.org/0000-0002-7565-4960
                https://orcid.org/0000-0002-8961-6447
                https://orcid.org/0000-0002-7103-3462
                Article
                Publisher ID: vetsci-08-00104
                DOI: 10.3390/vetsci8060104
                PMC ID: 8230020
                PubMed ID: 34201119
                SO-VID: e42e31a7-5e84-4bd6-ab33-dcfaef99c413
                Copyright © © 2021 by the authors.
                License:

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( https://creativecommons.org/licenses/by/4.0/).

                History
                Date received : 03 May 2021
                Date accepted : 06 June 2021
                Categories
                Subject: Case Report

                Keywords: aberrant right subclavian artery,contrast computed tomography,dog,hemodynamic change
                Data availability:
                Keywords: aberrant right subclavian artery, contrast computed tomography, dog, hemodynamic change

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