Which type of aortic dissection is classified as Stanford A?

Stanford classification of aortic dissections categorizes them into two main types: Type A (Stanford A) and Type B (Stanford B). Type A dissections involve the ascending aorta, which is critical because they often present a greater risk due to their proximity to crucial branches that supply the heart and can lead to life-threatening complications such as aortic regurgitation, cardiac tamponade, or even myocardial ischemia.

The inclusion of the ascending aorta in Type A is significant because it dictates the management approach—often requiring surgical intervention. In contrast, dissection confined to the descending aorta (Type B) typically can be managed medically unless there are complications.

Therefore, since the correct classification for Stanford A does involve the ascending aorta, it correctly captures the anatomical features and clinical implications associated with this type of dissection.