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  • Title: Deep Circulatory Arrest and Left Thoracotomy Approach Allow Open Repair of Chronic IIIb Dissection Associated to a Large Aortic Arch: A Case Series.
    Author: Ghorayeb G, Palmier M, Le Guillou V, Doguet F, Plissonnier D.
    Journal: Ann Vasc Surg; 2024 Nov; 108():92-97. PubMed ID: 38944192.
    Abstract:
    Thoracic aortic aneurysms evolving within a type IIIb chronic aortic dissection are mostly treated with the deployment of an endograft. However, several cases of dissecting aneurysms are associated with a significant dilatation of the aortic arch. These cases are usually managed in 2 steps: arch reconstruction or supra-aortic trunk debranching at first and a secondary graft deployment for the descending thoracic aorta. We present through this case series an alternative approach for this severe condition which consists in the replacement of the thoracic aorta from its hemi-arch to the distal thoracic or visceral aorta using a left thoracotomy. We deliberately neglected the remaining dissecting aorta if its diameter was below 45 mm, hypothesizing its nonevolution after repair. From 2012 to 2021, 9 patients have been treated for a thoracic aneurysm evolving after a IIIb chronic aortic dissection using a left thoracotomy and a 19°C circulatory arrest. Immediate postoperative results show no mortality or neurological disorders, and the 7 years follow-up for all of these 9 cases enlightened the absence of aneurysmal evolution especially for the distal anastomosis and the remaining dissected aorta. This work suggests that this direct approach strategy can definitively treat a thoracic dissecting aneurysm unsuitable for a simple endovascular treatment.
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