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Predictive factor of secondary tricuspid regurgitation after aortic valve replacement for aortic stenosis: the importance of myocardial hypertrophy and diastolic dysfunction.
OBJECTIVES: The aim of this study is to determine the predictors of secondary tricuspid regurgitation after aortic valve replacement for aortic stenosis.
METHODS: Seventy-one patients, who underwent aortic valve replacement for aortic stenosis at our institute from January 2006 to July 2011, were divided into two groups: an STR group, which included 15 patients with moderate or greater than moderate secondary tricuspid regurgitation at a follow-up visit and a control group. Echocardiography was performed before surgery, at discharge, and at a late follow-up visit (mean follow-up 36 ± 19 months, range 0-77).
RESULTS: Preoperatively, the number of women (p < .01), body surface area (p < .001), and relative wall thickness (0.60 ± 0.15 vs 0.71 ± 0.13, p = .022) showed significant differences between the two groups. At a follow-up visit, moderate or severe mitral regurgitation (p = .0001) and severe diastolic dysfunction (p = .003) showed significant differences between the two groups. In the Cox regression analysis, moderate or severe mitral regurgitation at follow-up (p = .038, hazard ratio 4.394, 95% CI 1.085-17.791) was the only independent predictor of secondary tricuspid regurgitation.
CONCLUSIONS: This study suggested that preoperative concentric myocardial hypertrophy and diastolic dysfunction were associated with development of the secondary tricuspid regurgitation at late follow-up.
METHODS: Seventy-one patients, who underwent aortic valve replacement for aortic stenosis at our institute from January 2006 to July 2011, were divided into two groups: an STR group, which included 15 patients with moderate or greater than moderate secondary tricuspid regurgitation at a follow-up visit and a control group. Echocardiography was performed before surgery, at discharge, and at a late follow-up visit (mean follow-up 36 ± 19 months, range 0-77).
RESULTS: Preoperatively, the number of women (p < .01), body surface area (p < .001), and relative wall thickness (0.60 ± 0.15 vs 0.71 ± 0.13, p = .022) showed significant differences between the two groups. At a follow-up visit, moderate or severe mitral regurgitation (p = .0001) and severe diastolic dysfunction (p = .003) showed significant differences between the two groups. In the Cox regression analysis, moderate or severe mitral regurgitation at follow-up (p = .038, hazard ratio 4.394, 95% CI 1.085-17.791) was the only independent predictor of secondary tricuspid regurgitation.
CONCLUSIONS: This study suggested that preoperative concentric myocardial hypertrophy and diastolic dysfunction were associated with development of the secondary tricuspid regurgitation at late follow-up.
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