Purpose Of Review: To summarize the most recent literature on the optimal echocardiographic approach to the evaluation of tricuspid regurgitation (TR).
Recent Findings: Severe TR is increasingly recognized as an independent adverse prognostic marker. TR severity grading has been mainly based on qualitative and semiquantitative parameters according to the 2017 ASE guidelines, but new data emerging from 3D echocardiography and MRI will likely provide insights into more quantitative measurements of TR severity. The tricuspid valve's anatomy and physiology is complex and unique. TR can be primary or secondary to tricuspid annular dilatation. Commonly used echocardiographic parameters to define severe TR are severe valve lesions, a large color flow jet area, a vena contracta width of ≥ 7 cm, a PISA radius of ≥ 0.9 cm, a dense and triangular continuous wave Doppler jet shape, and hepatic vein systolic flow reversal. Complementary imaging modalities such as 3D echocardiography and MRI should be utilized if the 2D echocardiographic evaluation is suboptimal.
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