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Figure 5 Receiver operating characteristic curve for the diagnosis of severe tricuspid regurgitation, using as independent variables the width of the vena contracta, jet area and jet-to-right atrial (RA) area ratio. The area under the curve for the vena contracta width (0.98) is larger than for jet area (0.88, p = 0.017) and for jet-to-RA area ratio (0.85, p = 0.01).
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