Intraoperative Open Aortoscopy-A New Emerging Technique in Hybrid Aortic Arch Surgery.

Intraoperative open aortoscopy is a new emerging technique in hybrid aortic arch surgery using hybrid open stent grafts for frozen elephant trunk operation. It is performed on a detumescent open aortic arch during the period of deep hypothermic circulatory arrest. It aids in operative planning and choice of open stent graft and confirms proper deployment and distal seal prior to resumption of circulation.