<unk>  should be utilized to assess for aneurysm or dissection
Aneurysm is defined as 3cm (150% the upper limit of normal) at the level of the renal arteries (L1-2 vertebral body level)
Risk of AAA rupture significantly increases at 5cm but should be ruled out in the proper clinical setting when >3cm
AAA’s are most commonly infrarenal
EM providers have an accuracy of 100% in assessing for AAA
An intimal flap is 67–80% sensitive and 99–100% specific for dissection
Aortic ultrasound
Cardiac ultrasound
Age adjusted D-dimer
Bubble study
NEXUS Chest CT Rule
IVC ultrasound
ECG 
D-dimer