Hi there, I think there are two different types of classifications. The Stanford classification differs from DeBakeys. It depends on which one you are familiar with. Ussually, De Bakey's is more popular (type 1,2,3) as compared to Standford(type A, B). You can actually look it up on the internet. Type 1- involves asc and dec aorta Tpye 2 - Asc aorta only Type 3 - Dec aorta only Thanks for sharing about taking BP on both arms. I guess it's difficult to have a standard nursing protocol and I'm not sure if any one has it for aortic dissection as it really depends on the site of dissection, right? Anyway, I was asked to sort of talk abt this subject and to propose a protocol. What do you think abt taking pedal pulses or having a circulation chart for lower limbs?