aortic dissection
Tear in the aortic wall creating a false lumen, classified as Stanford Type A or B based on involvement of the ascending aorta.
Full Definition
Aortic dissection is a life-threatening condition characterized by a tear in the intimal layer of the aortic wall, allowing blood to flow between the layers and creating a false lumen. Stanford Type A dissections involve the ascending aorta and require emergency surgical repair, while Type B dissections are confined to the descending aorta and may be managed medically or with endovascular techniques. Surgical management of Type A dissection typically involves replacement of the ascending aorta with or without aortic valve replacement, depending on the extent of involvement.
Usage
Usage note: Always specify Stanford classification (Type A or B) in surgical documentation.
In Context
- "Emergency surgery was performed for Stanford Type A aortic dissection with ascending aortic replacement." — Emergency operative report
- "CT angiography confirmed acute aortic dissection extending from the ascending aorta to the iliac arteries." — Emergency department imaging report