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Definitive Determinant of Late Significant Tricuspid Regurgitation After Aortic Valve Replacement.
BACKGROUND: Uncertainties remain regarding the course of existing tricuspid regurgitation (TR) after aortic valve replacement (AVR), and its long-term impact on outcome. We investigated changes in existing TR after isolated AVR for severe aortic stenosis (AS), the impact of preoperative TR on long-term outcome, and predictors of late significant TR.Methods and Results:After excluding mild mitral regurgitation and severe TR, 226 consecutive patients undergoing isolated AVR for severe AS between 2002 and 2015 were reviewed. Patients were classified into a non-TR (none/trivial preoperative TR, n=159) and a TR group (mild/moderate preoperative TR, n=67). During follow-up (median, 4.3 years), late significant TR was more prevalent in the TR group (n=20; 35.0%) than in the non-TR group (n=13; 9.6%; HR, 10.0; 95% CI: 4.44-24.7; P<0.001). The TR group developed more right heart failure (n=3; 5% vs. no patients in the non-TR group, P=0.007), and had a decreased estimated glomerular filtration rate (relative to baseline) until 5 years postoperatively. The tricuspid annulus diameter index was an independent predictor of late significant TR development.
CONCLUSIONS: Preoperative mild or moderate TR is aggravated after isolated AVR, resulting in a high incidence of renal dysfunction and right heart failure. Concomitant tricuspid valve intervention should be considered in patients undergoing AVR for severe AS with mild or moderate TR accompanied by dilated tricuspid annulus.
CONCLUSIONS: Preoperative mild or moderate TR is aggravated after isolated AVR, resulting in a high incidence of renal dysfunction and right heart failure. Concomitant tricuspid valve intervention should be considered in patients undergoing AVR for severe AS with mild or moderate TR accompanied by dilated tricuspid annulus.
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