Table 25.

Aorta Simplified Score (AORTAs)¹¹ Pretest Probability Assessment Score

Clinical Item	Points
Hypotension/shock	2
Aneurysm	1
Pulse deficit	1
Neurologic deficit	1
Severe pain	1
Sudden-onset pain	1

The patient is given the number of points corresponding to each clinical item that is positive in the patient’s presentation. The points are summed, and a total score of 0 to 1 point is low-probability of aortic dissection, where a total of ≥2 points is high probability. Reprinted with permission from Morello et al.¹¹