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Figure 23. Classification System for BTTAIs
Aortic injuries are classified according to severity, based on the findings of diagnostic imaging.
Grade 1, Intimal tear; intimal flap, or both.
Grade 2, Intramural hematoma.
Grade 3, Aortic wall disruption with pseudoaneurysm.
Grade 4, Aortic wall disruption with free rupture.
Adapted from Azizzadeh, et al. J Vasc Surg. 2009;49:1403-1408. Copyright 2009, with
permission from Elsevier, Inc. and the Society for Vascular Surgery.
