11
Figure 8. Anatomic Reporting of Aortic Dissection Based on
the 2020 SVS/STS Reporting Standards
A
D
indicates type A is used for any dissection with an entry tear in zone 0 and extends
distally the zone denoted by the subscript D (eg, A
9
).
B
PD
, type B is used for any dissection with an entry tear in zone 1 or beyond; the proximal
and distal extents of the dissection are denoted by subscripts P and D, respectively (eg, B
39
).
I
D
, when a dissection begins in zone 0 but the location of the entry tear has not been
identified, it will be considered "Indeterminate"; it will be designated with an I and its
distal extent denoted by the subscript D (eg, I
9
).
