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Table 1 Recommendations for the echocardiographic assessment of tricuspid regurgitation: a summary from review of Arsalan M and the European Association of Cardiovascular Imaging

From: The occurrence and risk factors of bradycardia after the Maze procedure in patients with atrial fibrillation and tricuspid regurgitation

Parameters Mild Moderate Severe
Tricuspid valve morphology Normal Normal/abnormal Abnormal/flail/large coaptation defect
RA/RV/IVC dimension Normal Normal/enlargement Enlargement
Area of backflow beam − central backflow beam (cm2) < 5 5–10 > 10
VC width (cm) Not defined Not defined, < 0.7 > 0.7
PISA radius (mm) ≤ 0.5 0.6–0.9 > 0.9
Color flow TR jet Small, central Intermediate Very large central jet or eccentric wall-impinging jet
CW signal of TR jet Faint/parabolic Dense/parabolic Dense/triangular with early peaking (peak < 2 m/s in massive TR)