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    Morphometric Analysis of the Aorto-Esophageal Relationship in Swine for Trans-Esophageal Aortic Blood Flow Occlusion

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    Author
    Savidge, Samuel G.
    Abdou, Hossam
    Edwards, Joseph
    Patel, Neerav
    Richmond, Michael J.
    Treffalls, Rebecca
    Rabin, Joseph
    Morrison, Jonathan J.
    Date
    2021-01-01
    Journal
    Journal of Endovascular Resuscitation and Trauma Management
    Publisher
    Orebro University Hospital
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://doi.org/10.26676/jevtm.v5i3.219
    Abstract
    Background: Trans-esophageal aortic blood flow occlusion (TEABO) is an emerging technology undergoing laboratory research that offers a strategy for temporary hemorrhage control. The purpose of this study was to evaluate the anatomical relationship between the esophagus and descending thoracic aorta in two breeds of swine to support a porcine model for future TEABO investigations. Methods: Thoracoabdominal computed tomography scans were compared in Hanford miniature swine and Yorkshire swine. Measurements were taken at the five vertebral levels proximal to the gastroesophageal junction. Data collected included the distance between the center of the esophagus and the center of the descending aorta, the angle between the vertebral column, descending aorta, and esophagus, and the length the thoracic esophagus travels anteriorly to the descending aorta. Results: Ten Hanford swine and ten Yorkshire swine were compared. In Hanford swine, the distal thoracic esophagus travels anteriorly to the descending aorta for a mean distance of 11.5 ± 2.3 cm. In Yorkshire swine, the thoracic esophagus travels to the right of the descending aorta. The mean angle between the vertebral body, descending aorta, and esophagus was 79.6 to 97.8 degrees higher in Hanfords compared with Yorkshires (P < 0.0001 at all five vertebral levels compared). The mean distance between the esophagus and descending aorta was 0.2 cm to 0.6 cm higher in Hanfords compared with Yorkshires with a significant difference found at only two vertebral levels (P = 0.01 and P = 0.02). Conclusions: Hanford miniature swine possess an aorto-esophageal relationship comparable to humans and should be the preferred animal model for TEABO studies. © 2021 CC BY 4.0 – in cooperation with Depts. of Cardiothoracic/ Vascular Surgery, General Surgery and Anesthesia, Örebro University Hospital and Örebro University, Sweden.
    Keyword
    Anatomy
    Aorta
    Esophagus
    Hemorrhage
    Swine
    Transesophageal
    Identifier to cite or link to this item
    http://hdl.handle.net/10713/18049
    ae974a485f413a2113503eed53cd6c53
    10.26676/jevtm.v5i3.219
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