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Aortic Dilatation

> 37mm
Msr at level of aortic annulus and sinus of Valsalva (M-mode)
easily detected in 2D echo

Ave diameter of adult aorta


Most Common in patients with

Marfan syndrome or annuloaortic ectasia (medial layer of aorta weakens and dilates)
Also seen in patients with aortic stenosis and HTN

Aortic Aneurysm locations

Anywhere along the thoracic aorta, often extend into the abdominal aorta.
Most common - the arch & descending ao just beyond subclavian artery

Aortic Aneurysm of Sinsus of Valsalva

Best seen in 2D imaging
Short axis during diastole
Rupture usually occurs (but not limited to) right side of heart
Can be aquired or congenital

Aortic dissection

results from intimal tears of aortic wall.
force of blood flow destroys the media further and strips intimal layer from the adventitial layer to create a FALSE LUMEN

2D visualization

Imaging of the intimal flap dividing the true lumen from the false lumen should be viewed in more than one view. Color Doppler blood flow thru lumens.

Other 2D echo findings assoc w/ Ao Dissection

Enlarged LV, Ao regurge,pericardial effusion, left pleural effusion

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