Key result
Mitral annular calcification was associated with significantly impaired left atrial mechanical function and increased left atrial volume index (26.9 vs. 20.5 mL/m2, p<0.001) compared to healthy controls.
Why the study?
Does mitral annular calcification affect left atrial volume and mechanical function as assessed by real-time three-dimensional echocardiography?
Cross-Sectional (n=62)
Single-blind
No
Does mitral annular calcification affect left atrial volume and mechanical function as assessed by real-time three-dimensional echocardiography?
Mitral annular calcification is independently associated with increased left atrial volume and impaired mechanical function as assessed by real-time three-dimensional echocardiography.
OBJECTIVE: Mitral annular calcification (MAC) is degeneration of the fibrous annular ring of the mitral valve. Left atrial (LA) function and volume have been evaluated by many methods; however, none have used real-time three-dimensional echocardiography (RT3DE) in patients with MAC. Our study is the first to evaluate LA volume and mechanical function using RT3DE in patients with MAC. METHODS: Our study was a prospective cross-sectional study. In total, 32 patients with echocardiographic evidence of MAC and 30 volunteers without MAC were enrolled in the study. Kolmogorov-Smirnov test, Student's t-test, Mann-Whitney U test, chi-square test, Pearson's correlation test, and multiple linear regression analyses were used in this study. RESULTS: LA diameter was significantly higher in patients with MAC (38.5±3.8 vs. 31.1±2.9, p<0.001). Maximum LA volume (49.6±11.2 vs. 35.6±2.5, p<0.001), minimum LA volume (23.8±7.9 vs. 12.6±2.3, p<0.001), and LA volume index (LAVI) (26.9±6.1 vs. 20.5±2.4, p<0.001) were also higher in the MAC group. LAVI was correlated with age (p<0.001), blood urea nitrogen levels (p=0.089), total cholesterol levels (p=0.055), left ventricular systolic myocardial velocity (p=0.048), E/A ratio (p<0.001), and MAC (p<0.001). Multiple linear regression analyses revealed that age (β=0.390, p<0.001) and MAC (β=0.527, p<0.001) were independent predictors of LAVI. CONCLUSION: We found that LA mechanical function was impaired in patients with MAC. Furthermore, age and MAC were independent predictors of increased LAVI according to our RT3DE examination.
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Bayramoğlu et al. (2015) conducted a cross-sectional in Mitral annular calcification (n=62). Mitral annular calcification vs. Volunteers without mitral annular calcification was evaluated on Left atrial volume index (LAVI) (p=<0.001). Mitral annular calcification was associated with significantly impaired left atrial mechanical function and increased left atrial volume index (26.9 vs. 20.5 mL/m2, p<0.001) compared to healthy controls.
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