Preemptive endovascular treatment of uncomplicated Stanford Type B aortic dissection
Aortic dissection is caused by an intimal tear. Once the dissection develops, the blood flow inside the aorta becomes complicated by exchange of blood between the true and false lumina through multiple reentries, and closure of the primary tear can no longer solve all the problems. However, if there is not much risk of a rupture, and blood flow to the organs is adequate, patients normally survive the acute period without major complications. This is the reason why uncomplicated acute type B aortic dissection has been treated medically with optimal blood pressure control. However, in a certain percentage of cases, the false lumen expands, and causes aneurysmal degeneration in the chronic period (1).