PAEA Surgery End Of Rotation (EOR) Practice Exam

In the DeBakey classification, which type includes dissections affecting both the ascending and descending aorta?

1. Type 1

2. Type 2

3. Type 3

4. Type 4

The correct answer is: Type 1

The DeBakey classification system for aortic dissections categorizes them based on the location of the dissection and its extent. In this classification, Type 1 dissections involve the ascending aorta as well as the descending aorta. This means that the dissection begins in the ascending aorta, extends to the aortic arch, and then continues into the descending thoracic aorta. Types 2 and 3 are defined differently: Type 2 dissections are confined to the ascending aorta, while Type 3 dissections typically begin in the descending aorta and may extend distally but do not involve the ascending aorta. Type 4, although not traditionally part of the DeBakey classification, is sometimes used to describe a dissection that affects the thoracoabdominal aorta. Therefore, Type 1 is the correct choice for dissections affecting both the ascending and descending aorta, aligning with the criteria set forth in the DeBakey classification.