Valvular & structural heart disease

Prognostic Value of the Right Ventricular-to-Left Ventricular Volume Ratio in Tricuspid Regurgitation

JACC AdvPublished retrospective analysis

Authors' conclusion

The RV/LVvol ratio is a strong predictor of mortality in advanced TR, capturing ventricular remodeling not identified by conventional metrics.

Study context

Population
Patients with ≥moderate tricuspid regurgitation (TR) who underwent cardiac magnetic resonance imaging between 2005 and 2024patients with ≥moderate TR
Participants
949 patients
Exposure
The right ventricular (RV)/LVvol ratio was assessed as a dichotomous variable (normal: <1.27, abnormal: ≥1.27) and by severity strata
Outcome
Abnormal RV/LVvol ratio

Main finding

As reported in the abstract

Of the 949 patients, abnormal RV/LVvol ratio

43.6%

Among 528 patients with a normal RV end-diastolic volume index, abnormal RV/LVvol ratio

178

33.7%

Observational data: associations, not effects.

Further findings

OutcomeAdjusted HR (95% CI)P value
All-cause mortality · mean follow-up of 4.8 ± 4.5 yearsAbnormal RV/LVvol ratiovs normal RV/LVvol ratioAdjusting for covariates1.47 (1.01–2.14)P = 0.043
All-cause mortality · mean follow-up of 4.8 ± 4.5 yearsSevere RV/LVvol ratiovs normal RV/LVvol ratioSevere ratios conferring the highest risk · adjusting for covariates2.20 (1.31–4.76)P = 0.045
All-cause mortality — patients died
236

Incremental prognostic value (global chi-square)

Age/sex
24.7
With RV ejection fraction
47.1
With RV end-diastolic volume index
59.3
With the addition of RV/LVvol ratio
68.3
  • P = 0.005

Original publication

Prognostic Value of the Right Ventricular-to-Left Ventricular Volume Ratio in Tricuspid Regurgitation. JACC Adv. Published 4 July 2025. doi:10.1016/j.jacadv.2025.101922

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