TABLE 2.
Differences in mitral annular geometric parameters between controls and patients with FMR (cases).
| Annular Dimensions | Controls (n=15) |
Cases (n=34) |
P value |
|---|---|---|---|
| Anteroposterior diameter | 3.0 cm ± 0.1 | 4.0 cm ± 0.14 | <0.01 |
| Anterolateral–Posteromedial diameter |
3.6 cm ± 0.1 | 4.3 cm ± 0.1 | <0.01 |
| Commissural diameter | 3.5 cm ± 0.5 | 4.4 cm ± 0.7 | <0.01 |
| Annular Circumference | 11.4 cm ± 0.5 | 14.1cm ±0.4 | <0.01 |
| 2D Annular Area | 8.7 cm2 ± 0.79 | 14.2 cm2± 0.8 | <0.01 |
| 3D Annular Area | 9.6 cm2± 3 | 14.6 cm2± 5 | <0.01 |
| Anterior Leaflet Area | 6.4 cm2± 2 | 10.0 cm2± 3 | <0.01 |
| Posterior Leaflet Area | 6.1 cm2± 2 | 9.0 cm2± 3 | <0.01 |
| Annular Shape | |||
| Nonplanarity Angle | 136° ± 11 | 155° ± 15 | <0.01 |
| Max Nonplanarity Angle | 140° ± 10 | 158° ± 15 | <0.01 |
| Circularity Index | 0.85 ± 0.02 | 0.93 ± 0.01 | <0.01 |
| Tenting Height | 10.0 mm ± 0.85 | 11.7mm ± 0.77 | 0.13 |
| Tenting Volume | 3.5mm3± 2.0 | 6.2mm3± 3.5 | 0.01 |
| Tenting Volume Fraction | 24% ± 11 | 30% ± 21 | 0.36 |
| Aorto-Mitral Angle | 112° ±14 | 119° ± 15 | 0.12 |
| Annular Excursion | |||
| Maximum Vertical Annular Displacement |
8.3 mm ± 3 | 5.8 mm ± 2 | <0.01 |
| Maximum Vertical Annular Displacement Velocity |
32 mm/s ± 13 | 26 mm/s ± 8 | 0.05 |
| Maximum Vertical Annular Acceleration |
26 mm/s2± 15 | 18 mm/s2± 12 | 0.04 |
Values are described as mean ± standard deviation.
FMR: functional mitral regurgitation