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  • Title: The right ventricle systolic force ratio could predict the severity of the tricuspid regurgitation-RIVIERA ratio.
    Author: Emrah A, Servet I, Ibrahim D, Fatih YM, Neryan O, Hande S, Eda O, Tuba K, Oguz K, Mustafa G, Yilmaz G, Akin II, Cevat K.
    Journal: J Clin Ultrasound; 2023; 51(6):963-971. PubMed ID: 37000708.
    Abstract:
    PURPOSE: For assessing the severity of tricuspid regurgitation (TR), there is no gold standard. We developed a parameter, the right ventricular systolic force ratio-RIVIERA, using the continious wave Doppler analysis of TR and pulsed-wave analysis of the right ventricle outflow tract. We hypothesized that the RIVIERA would facilitate the ability to identify severe TR in clinical settings. MATERIALS AND METHODS: We obtained data from routine transthoracic echocardiograms. All records reporting no or mild TR (n = 732), moderate TR (n = 584), and severe TR (n = 519) TR were reanalyzed to measure vena contracta (VC) width, TR jet area, effective regurgitant orifice (EROA) derived with the proximal isovelocity surface area method, the RIVIERA, and right-sided chamber volumes. RESULTS: Significant linear trends were demonstrated for right atrial volume index, end-diastolic volume index, RVOT velocity time integral, TR jet area, TR-Vmax, TR-VTI, TR acceleration, VC width, EROA with increasing TR severity. Independent predictors of severe RT included RIVIERA <4.8, VC width ≥0.7 cm, TR jet area > 10 cm2 , and EROA ≥0.4 cm2 . CONCLUSION: The RIVIERA is a feasible, effective, and independent predictor of severe TR that enhances established techniques for estimating TR severity. For clinical decision-making and management, accurate measurement and classification of TR severity are essential. Therefore, it should be thought about include the RIVIERA in the integrative method to assessing TR severity.
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