Title: Aortic Root Measurement<br/>
Author: Alexis Salerno<br/>
<a href='mailto:alexis.salerno@som.umaryland.edu'>[Click to email author]</a><hr/>
Link: <a href='https://umem.org/educational_pearls/4384/'>https://umem.org/educational_pearls/4384/</a><hr/><p>Point-of-Care Ultrasound can help to identify signs of thoracic aortic dissection.</p>
<p>One view to help in your assessment is the Parasternal Long Axis View.</p>
<ul>
<li>The aortic root should be in a 1:1:1 ratio with the left atrium and the right ventricle.</li>
<li>The aortic root should be less than 4 cm (4.5 cm considered aneurysmal)</li>
</ul>
<p>To correctly measure the aortic root:</p>
<ul>
<li>Measure at the Sinus of Valsalva</li>
<li>Measure during diastole (when the aortic valve is closed)</li>
<li>Measure leading edge to leading edge</li>
</ul>
<p>Here is an example of an aortic root aneurysm: </p>
<p><img src="https://umem.org/files/uploads/content/pearls/proximal_aorta-656e62bb2fe47.jpeg" alt="" /></p>
<fieldset><legend>References</legend><p>Kennedy Hall M, Coffey EC, Herbst M, Liu R, Pare JR, Andrew Taylor R, Thomas S, Moore CL. The "5Es" of emergency physician-performed focused cardiac ultrasound: a protocol for rapid identification of effusion, ejection, equality, exit, and entrance. Acad Emerg Med. 2015 May;22(5):583-93. doi: 10.1111/acem.12652.</p>
</fieldset>