Table 5.
Comparison of 3DSTE-derived global and segmental peak right atrial strain parameters at atrial contraction in patients with cardiac amyloidosis and in matched controls
| AL-CA patients (n = 16) | Controls (n = 15) | p-value | |
|---|---|---|---|
| Global strain at atrial contraction | |||
| RS (%) | -6.4 ± 6.7 | -6.2 ± 6.1 | 0.93* |
| CS (%) | 10.6 ±11.9 | 7.8 ± 8.5 | 0.47* |
| LS (%) | 4.0 ± 5.2 | 8.2 ± 5.5 | 0.02* |
| 3DS (%) | -2.8 ± 4.9 | -3.6 ± 4.4 | 0.62* |
| AS (%) | 7.8 ± 8.1 | 15.9 ± 10.3 | 0.03* |
| Mean segmental strain at atrial contraction | |||
| RS (%) | -8.5 ± 6.0 | -8.5 ± 4.8 | 0.99* |
| CS (%) | 5.3 ± 6.2 | 8.6 ± 7.3 | 0.10* |
| LS (%) | 6.5 ± 4.0 | 9.0 ± 5.7 | 0.20* |
| 3DS (%) | -5.3 ± 4.6 | -6.2 ± 4.5 | 0.57* |
| AS (%) | 11.2 ± 6.8 | 17.2 ± 12.3 | 0.11* |
3DSTE: three-dimensional speckle-tracking echocardiography; CA: cardiac amyloidosis; 3DS: three-dimensional strain; AS: area strain; CS: circumferential strain; LS: longitudinal strain; RS: radial strain. Data expressed as mean ± standard deviation.
*
Unpaired Student t test.