Table 3.
Healthy subjects-Left atrial parameters significantly influenced by age on multivariable analysis (mean, 95% confidence interval)
| 20-29 years | 30-39 years | 40-49 years | 50-59 years | 60-69 years | 70-79 years | |
|---|---|---|---|---|---|---|
| All | ||||||
| Transverse diameter - 2ch [cm] SD 0.5 | 4.8 (3.9, 5.8) |
4.7 (3.8, 5.7) |
4.7 (3.7, 5.6) |
4.6 (3.6, 5.5) |
4.5 (3.5, 5.4) |
4.4 (3.4, 5.4) |
| AP diameter-3ch [cm] SD 0.6 | 4.9 (3.8, 6.0) |
4.8 (3.7, 5.9) |
4.6 (3.5, 5.7) |
4.5 (3.4, 5.6) |
4.3 (3.2, 5.5) |
4.2 (3.1, 5.3) |
| Area/BSA-3ch [cm] SD 1.8 | 9 (5, 12) |
9 (6, 13) |
10 (6, 13) |
10 (7, 14) |
10 (7, 14) |
11 (7, 14) |
| Males | ||||||
| Transverse diameter/BSA-2ch [cm] SD 0.2 | 2.5 (2.0, 2.9) |
2.4 (1.9, 2.9) |
2.4 (1.9, 2.8) |
2.3 (1.8, 2.8) |
2.2 (1.8, 2.7) |
2.2 (1.7, 2.7) |
| AP diameter/BSA-3ch [cm] SD 0.3 | 2.7 (2.0, 3.4) |
2.6 (1.9, 3.2) |
2.5 (1.8, 3.1) |
2.3 (1.7, 3.0) |
2.2 (1.5, 2.9) |
2.1 (1.4, 2.8) |
| Area-3ch [cm] SD 3.8 | 17 (11, 24) |
18 (11, 25) |
19 (12, 25) |
20 (13, 26) |
21 (14, 27) |
21 (15, 28) |
| Females | ||||||
| Transverse diameter/BSA-2ch [cm] SD 0.3 | 2.8 (2.2, 3.3) |
2.7 (1.6, 3.7) |
2.6 (1.6, 3.7) |
2.6 (1.5, 3.6) |
2.5 (1.4, 3.6) |
2.4 (1.4, 3.5) |
| AP diameter/BSA-3ch [cm] SD 0.3 | 2.8 (2.3, 3.4) |
2.8 (2.2, 3.3) |
2.7 (2.1, 3.3) |
2.6 (2.0, 3.2) |
2.5 (1.9, 3.1) |
2.4 (1.9, 3.0) |
| Area-3ch [cm] SD 3.4 | 16 (9, 22) |
16 (10, 23) |
17 (10, 24) |
18 (11, 24) |
18 (12, 25) |
19 (12, 26) |
AP - anteroposterior; 4ch - 4-chamber view; 2ch - 2-chamber view; 3ch - 3 chamber view; BSA - body surface area; SD - standard deviation