Dissection not involving the ascending part and usually distal to the left subclavian artery corresponds to which type?

Dissection not involving the ascending part and usually distal to the left subclavian artery corresponds to which type?

• A. Type A
• B. Type II DeBakey
• C. Type B (type III DeBakey)
• D. Type I DeBakey

Answer: (C)

Dissections that do not involve the ascending aorta and are typically distal to the left subclavian artery are DeBakey type III, which corresponds to Stanford type B. In the DeBakey system, type III originates in the descending aorta distal to the left subclavian and may extend downward, but it does not affect the ascending aorta. This is why it’s mapped to the descending-aorta, Stanford type B category. In contrast, involvement of the ascending aorta corresponds to DeBakey types I or II (and Stanford type A). So the described pattern matches Type B (type III DeBakey).

Dissections that do not involve the ascending aorta and are typically distal to the left subclavian artery are DeBakey type III, which corresponds to Stanford type B. In the DeBakey system, type III originates in the descending aorta distal to the left subclavian and may extend downward, but it does not affect the ascending aorta. This is why it’s mapped to the descending-aorta, Stanford type B category. In contrast, involvement of the ascending aorta corresponds to DeBakey types I or II (and Stanford type A). So the described pattern matches Type B (type III DeBakey).