Defaults: 1X 2X 3X 4X      
Pssst! It's me, the website.

I just wanted to let you know that even though I'm looking quite old, I'm still a millenial.
So I just had a "New Year, New Me" moment and my resolution is to become a new and improved version of myself in a couple of weeks.
Don't worry, my wisdom won't change. You're still going to find the same useful information here. Stay tuned!

E-Echo will be continuing to be available after this year! A new company is taking over.
Pulmonary Valve Area by PISA Formation
Calcs>Pulmonary Stenosis>PVA by PISA>1
Calculator
PISA Radius (r)(cm): cm
Aliasing Velocity (VA)(cm/sec) cm /sec
 Vmax (m/sec) m/sec
Angle () degrees

Pulmonary Valve Area cm2









 
How to get an PVA by PISA.
 
Step 1: Obtain a Zoomed CFD of the PV in the Aortic Arch SAX or Deep Transgastric view. If there is a sufficiently stenosed pulmonary valve, a PISA formation will occur. The distance from the center of the PISA formation to it's first aliasing velocity edge (where the color shifts from blue to red) is the radius of the PISA formation.
 
Step 2: Note the aliasing velocity. The aliasing velocity is the velocity where if the flow exceeds this velocity the flow will be displayed with colors from the opposite scale. 
 
Step 3: Obtain a continuous wave doppler (CWD) of the aortic valve. The CWD of the pulmonary valve will yield a flow profile where, utilizing the calipers (or you can trace it) to show the peak velocity.
 
Step 4: Obtain an angle of the PISA formation: The angle at the pulmonary valve is typically 180 degrees, whereas the angle at the mitral valve (for mitral stenosis calculations) is typically 120 degrees.
 

Previous Page
Next Page
 
 
Instution Info  
User Info  
CME Info  
Help  
User License  
HIPAA  
Privacy Policy  
References   
Calcs   
 
Copyright Statement
© Copyright 2000-2023 JLS Interactive, LLC.
Content from this web site may not be used or reproduced for non-personal or
commercial purposes without express written permission by JLS Interactive, LLC.