When the diameter of the abdominal aorta should be considered as abnormal? A new ultrasonographic index using the wrist circumference as a body build reference

The definition of normal AD should consider body build. An AD2/WC ratio of 15% may be regarded as a threshold to differentiate AAA- from non-AAA patients. Patients with AD2/WC values comprised between 12% and 15% may be at risk for AAA.