CASE REPORTS
JOURNAL ARTICLE
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Endovascular management of blunt aortic injury with an associated aberrant right subclavian artery: a report of three cases.

Traumatic rupture of the aorta in the rare setting of the aberrant right subclavian artery (ARSA) requires special consideration to prevent the occurrence of a devastating posterior cerebral circulation stroke. We present three cases managed by using an endovascular approach, with a discussion of important preoperative and operative issues. Three patients involved in motor vehicle collisions with multiple injuries were managed at two institutions. Computed tomography revealed transection of the aorta with incidental ARSA. All three cases were managed with a different approach. One patient did not undergo a preoperative bypass because imaging confirmed an adequate landing zone distal to the origin of the left subclavian artery. Two patients received preoperative right carotid-to-subclavian bypass for anticipated endograft coverage of both subclavian arteries to preserve single vertebral arterial flow. In one patient, an endovascular occlusion device was deployed in the ARSA before aortic endograft deployment. In the other, ARSA occlusion was performed 4 days later for a persistent type II endoleak. The patient who underwent bypass and preoperative ARSA occlusion suffered a fatal posterior circulation stroke shortly after surgery. The other two patients had no procedural complications and have not required any reinterventions at follow-up after 2 and 5 years. One patient is still undergoing rehabilitation after 5 years of follow-up for traumatic brain injury unrelated to the endograft repair. Although the incidence of ARSA is very low, preoperative imaging and assessment of cerebral blood flow are critical to prevent a perioperative stroke. Revascularization, if required to achieve a secure proximal landing zone, must be performed before endograft deployment. Bilateral subclavian revascularization is indicated if anomalies of the cerebral circulation are present.

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