The severerity of tricuspid regurgitation can be gauged by the ratio of the regurgitation jet area to the area of the right atrium seen on echocardiography.
Patient selection: tricuspid regurgitation
Examination: apical 4-chamber view, with calculations performed by computerized planimetry
(1) maximal regurgitant jet area in the echocardiogram
(2) right atrium area in the echocardiogram
ratio of regurgitant to right atrial area =
= (area of maximal regurgitant jet) / (area of the right atrium)
• The mean ratio in normal subjects was 0.04 +/- 0.05
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