Step
1: Obtain a CFD of the largest TR Jet. The
jet area is indicative of the degree of tricuspid regurgitation.
The major factors that can influence the jet area
need to be accounted for on each interrogation of
the tricuspid valve. Those factors are:
- Ejection Fraction
- Aliasing Velocity
- Color Gain
- Pulmonary Artery Pressure
Low EF will falsely lower the jet size. Low
Aliasing velocity (should be around 50 cm/sec) will
falsely enlarge the jet area. High color gain
will falsely enlarge the jet area. Low blood
pressure may falsely lower the jet area (interpret
the jet area with a blood pressure of 150 systolic,
if possible).
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