DeBakey classification of aortic dissection

De·Bak·ey clas·si·fi·ca·tion of a·or·tic dis·sec·tion

(dĕ-bā'kē klas'i-fi-kā'shŭn ā-ōr'tik di-sek'shŭn)
Consists of several types: type I extends into the transverse arch and distal aorta and type II is confined to the ascending aorta; type III dissections begin in the descending aorta, with type IIIA extending toward the diaphragm and type IIIB extending below it.