Carotid Artery Revascularization and Endarterectomy Registry v1.08
Aortic Arch Type
Indicate the patient's aortic arch type configuration. The three types of aortic arch are based on the relationship of the innominate artery to the aortic arch. The more inferior the origin of the target artery (i.e., Type II or III aortic arch), the greater the difficulty in gaining access to the carotid artery.
Type I The Type I aortic arch is characterized by origin of all three great vessels in the same horizontal plane as the outer curvature of the aortic arch.
Type II In the Type II aortic arch, the innominate artery originates between the horizontal planes of the outer and inner curvatures of the aortic arch.
Type III In the Type III aortic arch, the innominate artery originates below the horizontal plane of the inner curvature of the aortic arch.
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