Table 10.
Early systolic MV measurements indexed to body height, by age groups
| All subjects | ||||
|---|---|---|---|---|
| 18–40 y | 41–65y | >65 y | ||
| (n = 266) | (n = 249) | (n = 233) | P | |
| MA shape | ||||
| AP diameter, cm/m | 1.9 ± 0.2 | 2.0 ± 0.2 | 2.0 ± 0.3 | * ,†,‡ |
| AL-PM diameter, cm/m | 2.2 ± 0.2 | 2.2 ± 0.2 | 2.2 ± 0.2 | * ,† |
| Circumference, cm/m | 6.9 ± 0.7 | 7.1 ± 0.7 | 7.1 ± 0.8 | * ,† |
| 2D area, cm2/m | 5.7 ± 1.2 | 5.9 ± 1.3 | 5.7 ± 1.4 | * ,† |
| 3D area, cm3/m | 6.0 ± 1.2 | 6.2 ± 1.3 | 6.3 ± 4.8 | * ,† |
| MA shape | ||||
| Annular height, cm/m | 0.54 ± 0.14 | 0.51 ± 0.15 | 0.52 ± 0.14 | * ,† |
| Tenting volume, cm3/m | 1.8 ± 0.8 | 2.3 ± 0.8 | 1.8 ± 0.8 | * ,†,§ |
| Tenting area, cm2/m | 1.2 ± 0.4 | 1.4 ± 0.4 | 1.2 ± 0.3 | * ,†,§ |
| Tenting height, mm/m | 5.3 ± 1.7 | 6.0 ± 2.1 | 5.9 ± 1.6 | * ,†,‡ |
| Mitral leaflets | ||||
| Anterior leaflet area, cm2/m | 4.2 ± 0.9 | 4.2 ± 0.9 | 3.8 ± 1.0 | * ,‡,§ |
| Posterior leaflet area, cm2/m | 3.2 ± 1.0 | 3.8 ± 1.0 | 3.6 ± 1.1 | * ,†,‡ |
| Anterior leaflet length, cm/m | 1.6 ± 0.2 | 1.6 ± 0.3 | 1.5 ± 0.2 | * ,†,‡,§ |
| Posterior leaflet length, cm/m | 0.8 ± 0.2 | 1.0 ± 0.2 | 1.0 ± 0.2 | * ,†,‡ |
Data are expressed as mean ± SD. NPA and sphericity index were not indexed.
*
Three-way analysis of variance.
†
Student’s t test for 18 to 40 versus 41 to 65 years.
‡
Student’s t test for 18 to 40 versus >65 years.
§
Student’s t test for 41 to 65 versus >65 years.