Key result
Above-median right-to-left atrial volume index ratio linked to ~6.7-fold higher short-term mortality after CABG.
Why the study?
Atrial remodeling influences prognosis in cardiovascular diseases, but the prognostic value of the right-to-left atrial volume index ratio in patients undergoing CABG needed investigation.
Does a high RAVI/LAVI ratio predict increased 2-month all-cause mortality and length of hospital stay in patients undergoing CABG?
Observational (n=267)
No
Does a high RAVI/LAVI ratio predict increased 2-month all-cause mortality and length of hospital stay in patients undergoing CABG?
Odds Ratio: 6.67 (95% CI 1.96–22.73)
Absolute Event Rate: 35.2% vs 12.8%
p-value: p=0.002
The RAVI/LAVI ratio is a strong, independent echocardiographic predictor of 2-month all-cause mortality and prolonged hospital stay in patients undergoing coronary artery bypass grafting.
Higher RAVI/LAVI may aid preoperative risk stratification in CABG; leaves open whether it adds value beyond existing models.
Atrial remodeling is a key mechanism influencing prognosis in cardiovascular diseases [1]. This study aimed to investigate the prognostic value of the right-to-left atrial volume index ratio (RAVI/LAVI) for 2-month all-cause mortality and length of hospital stay in patients undergoing coronary artery bypass grafting (CABG). In this single-center retrospective observational study, a total of 267 hospitalized patients were included. Patients were stratified into two groups according to the median RAVI/LAVI ratio (median value = 0.78) (below-median vs. above-median). Clinical, laboratory, and echocardiographic variables were compared between groups. The primary endpoint was 2-month all-cause mortality after CABG, and the secondary endpoint was length of hospital stay. Predictors of mortality were evaluated using logistic regression analysis. Mortality was significantly higher in the high RAVI/LAVI group (35.2% vs. 12.8%, p < 0.001), and the length of hospital stay was markedly longer (24.9 days vs. 11.4 days, p < 0.001). In multivariable logistic regression analysis, the RAVI/LAVI ratio remained an independent predictor of mortality (OR 6.67; 95% CI 1.96–22.73; p = 0.002). The RAVI/LAVI ratio demonstrates a strong and independent association with mortality and length of hospital stay. This ratio may represent a practical and robust echocardiographic marker for risk stratification in vascular and cardiac patients.
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Sevil et al. (2026) conducted an observational in Coronary artery disease requiring coronary artery bypass grafting (n=267). Above-median RAVI/LAVI ratio (>0.78) vs. Below-median RAVI/LAVI ratio (≤0.78) was evaluated on 2-month all-cause mortality (OR 6.67, 95% CI 1.96-22.73, p=0.002). An above-median right-to-left atrial volume index ratio was independently associated with a significantly higher risk of 2-month all-cause mortality (35.2% vs 12.8%; OR 6.67) in patients undergoing coronary artery bypass grafting.
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