Takeoff orientation of the major aortic arch branches irrespective of arch type: Ramifications for brachiocephalic interventions including carotid stenting

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Abstract

Background: Our previous work demonstrating great ease and predictability of cannulation of the major aortic arch branches with an upwardly pointing 3DR catheter, irrespective of aortic arch type, led us to hypothesize that centering or “cresting” of these vessels must occur along the superior most aspect of the aortic arch in a curvilinear fashion. Methods: We retrospectively analyzed 111 computed tomographic scans of the chest and thoracic aorta with intravenous contrast performed at our hospital between April 2011 and May 2012 utilizing TeraRecon image reconstruction software. Four studies were excluded due to poor image quality and/or surgical changes to native aortic architecture. Results: Of the 107 studies included, 104 (97.2%) demonstrated centering of the major aortic arch branches on a curvilinear line “cresting” the superior most aspect of the aortic arch irrespective of arch type. Of the three studies that did not demonstrate this “cresting,” two were found to have aberrant right subclavian arteries associated with a type I aortic arch, and one had an aberrant right common carotid associated with a type II aortic arch. Conclusion: Operators engaging major aortic arch branches need to be mindful of the fact that these vessels are indeed centered on a line “cresting” along the superior most aspect of the aortic arch, and any algorithm that, by taking this information into account, reduces catheter manipulation in the aortic arch could potentially result in a reduction in distal atheroembolic events.

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Tayal, R., Khakwani, M. Z., Lesar, B., Sinclair, M., Emporelli, A., Spektor, V., … Wasty, N. (2018). Takeoff orientation of the major aortic arch branches irrespective of arch type: Ramifications for brachiocephalic interventions including carotid stenting. SAGE Open Medicine, 6. https://doi.org/10.1177/2050312118776717

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