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!
Regurgitant Volume by PISA
Calcs>Pulmonary Regurgitation>RV by PISA>1
RV =(( 2 x pi x r2
x VA x )
/ 180) / Vmax )* RV VTI
to get a Regurgitant Volume in Pulmonary Regurgitation.
Step 1: Obtain
a CFD of the PR Jet with a good PISA formation under
zoomed view. The Arch SAX view from
the UE window gives a good view of the pulmonary artery.
Sometimes, the DTG view or TG view of the pulmonary
artery is acceptable.
2: Measure the Diameter of the PISA radius.
The radius is from the center of the PISA formation,
typically from the center of the valve, to the first
aliasing velocity. If the PISA is small, try
slightly decreasing the aliasing velocity (VA) which
will increase the size of the PISA formation.
3: Obtain a VTI of the Regurgitant Jet by CWD.
From the flow profile the Vmax and the
VTI of the regurgitant jet can be obtained by tracing
the diastolic flow profile.
4: Obtain the angle of the PISA formation.
The angle is typically 180 degrees.