- Severe sudden onset migratory pain
- Stanford Classification
- Type A – Ascending, 60%,
- Elastic tissue degeneration (Marfans, Ehlers Danlos), younger
- Rx: Surgical – Aortic replacement
- MR 50% in first 24 hours, 90% 3/12
- Type B – Descending
- Smooth muscle degeneration in media, older patients
- Rx – Medical (ß-blocker), stent, surgical
- DeBakey Classification
- I Whole length
- II Ascending aorta – stops at Brachiocephalic
- III Descending aorta – starts distal to Left Subclavian
- IV enters descending to aortic valve