How many classes of aortic dissection are recognized?

Aortic dissection is classified into two main categories known as the Stanford classification. These classes are crucial for guiding treatment decisions and understanding the prognosis.

In this classification, Type A dissection involves the ascending aorta and can extend to the arch and beyond, while Type B dissection begins distal to the left subclavian artery and does not involve the ascending aorta. This bifurcation is essential because it influences both the management of the condition and the risk for complications, with Type A being more acute and often requiring surgical intervention.

The recognition of these two classes reflects a consensus in clinical practice regarding how to approach aortic dissections accurately and safely, enabling healthcare providers to communicate effectively about the condition and establish appropriate treatment protocols.