Regurgitant Flow Rate
Tricuspid Regurgitation
· Dr. Kenneth Gross ·
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Calcs>Tricuspid Regurgitation>RFR>1
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Radius
cm
VA cm/sec
Angle degrees
Heart Rate bpm

RFR ml/min

Regurgitant Flow Rate


How to get a Regurgitant Flow Rate in Tricuspid Regurgitation.

Step 1: Obtain a CFD of the MR Jet with a good PISA formation under zoomed view. The midesophageal view with a good quality, largest PISA formation should be used.
 
Step 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.

Step 3: Obtain the angle of the PISA formation. The angle is typically 180 degrees.


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