Two working classifications of the aortic dissection:
- Stanford classification
- Type A (60%): Involves ascending aorta, ± descending aorta
- Type B (40%): Excludes ascending aorta; involves descending aorta &/or aortic arch
- DeBakey classification
- Type I: involves ascending aorta, aortic arch, and descending aorta
- Type II: involves ascending aorta
- Type III: involves descending aorta distal to left subclavian artery