Aortic Aneurysm Size Chart
Figure 5 Risk of complications by aortic diameter and body surface area with aortic size index given within chart.
Aortic aneurysm size chart. Symptoms plus family history trump size in thoracic aortic aneurysm. 50 increase in the diameter of a vessel in comparison of its expected normal. TAA size is the strongest predictor of acute aortic syndromes.
The size of the aortic root and ascending aorta should be evaluated annually or biannually although more frequent studies are warranted 3-6 months when the aorta exceeds 45 cm or the growth rate 05 cmyr. In young males the tubular portion of the ascending aorta measures approximately 33 mm 30- 35mm and the descending aorta 23 mm. AAAs are grouped into 3 sizes.
However as more than 90 of AAAs are infrarenal a normal-sized suprarenal aorta does not exclude an AAA. This can vary with age and weight. Tranquilli M Darr U et al.
When the aorta is 15 times the size of the normal aorta it is diagnosed as an aortic aneurysm. On the routine transthoracic examination TTE the suprarenal proximal abdominal aorta is often imaged from the subcostal window. Large AAA 55cm or more across.
Diameter between 5cm and 59cm have risk between 1 in total 30 and 1 in total 7. J Vasc Surg 199113452-8 and 2010 Guidelines TAD. Small AAA 3cm to 44cm across.