Table 2.
Results for segmental and mean strain and strain rate analysis of both ventricles of the study population (n = 50)
| Short-axis | Peak CS (%) | Peak systolic CSR (%/s) | Peak diastolic CSR (%/s) | Peak RS (%) | Peak systolic RSR (%/s) | Peak diastolic RSR (%/s) |
|---|---|---|---|---|---|---|
| LV mean | -19.9 ± 3.4 | − 94.4 ± 17.0 | 86.5 ± 22.4 | 54.9 ± 10.0 | 233.0 ± 43.5 | − 273.6 ± 59.3 |
| LV base | − 18.2 ± 3.1 | − 79.9 ± 14.0 | 74.0 ± 16.2 | 51.3 ± 12.7 | 205.8 ± 55.8 | − 235.2 ± 70.4 |
| LV mid | − 18.0 ± 3.4 | − 83.0 ± 20.5 | 79.2 ± 21.2 | 58.1 ± 11.7 | 254.2 ± 56.2 | − 301.1 ± 85.3 |
| LV apex | − 23.5 ± 5.7 | − 120.2 ± 30.6 | 106.3 ± 40.7 | 55.4 ± 15.3 | 239.1 62.8 | − 284.5 ± 82.4 |
| RV mean | − 13.7 ± 3.9 | − 69.5 ± 19.9 | 63.7 ± 19.7 | NA | NA | NA |
| RV base | − 11.6 ± 3.7 | − 60.9 ± 20.8 | 46.9 ± 14.3 | NA | NA | NA |
| RV mid | − 14.5 ± 4.7 | − 69.4 ± 23.3 | 65.0 ± 28.9 | NA | NA | NA |
| RV apex | − 15.1 ± 6.6 | − 78.0 ± 30.8 | 79.2 ± 34.8 | NA | NA | NA |
| Long-axis | Peak LS (%) | Peak systolic LSR (%/s) | Peak diastolic LSR (%/s) | |||
|---|---|---|---|---|---|---|
| LV mean | − 17.4 ± 2.6 | − 79.1 ± 14.5 | 60.5 ± 14.1 | |||
| RV mean | − 22.4 ± 4.2 | − 95.8 ± 19.4 | 67.4 ± 18.7 |
| LV segments | Peak CS (%) | Peak systolic CSR (%/s) | Peak diastolic CSR (%/s) | Peak RS (%) | Peak systolic RSR (%/s) | Peak diastolic RSR (%/s) |
|---|---|---|---|---|---|---|
| Basal anterior | − 20.8 ± 5.6 | − 111.9 ± 32.2 | 97.5 ± 33.6 | 55.9 ± 18.9 | 246.4 ± 79.1 | − 278.8 ± 109.4 |
| Basal anteroseptal | − 18.5 ± 6.2 | − 90.2 ± 26.6 | 69.8 ± 27.2 | 33.5 ± 14.9* | 169.2 ± 68.4* | − 174.9 ± 79.4* |
| Basal inferoseptal | − 14.2 ± 4.9* | − 72.6 ± 20.5 | 80.6 ± 22.8 | 26.7 ± 8.9* | 134.3 ± 46.0* | − 160.3 ± 50.7* |
| Basal inferior | − 16.2 ± 5.8* | − 76.4 ± 25.0 | 78.3 ± 24.8 | 61.8 ± 19.4 | 276.2 ± 95.5 | − 350.4 ± 127.0 |
| Basal inferolateral | − 21.3 ± 6.7 | − 97.3 ± 30.9 | 128.2 ± 40.4 | 71.3 ± 16.4 | 315.4 ± 95.6 | − 360.8 ± 124.3 |
| Basal anterolateral | − 21.9 ± 6.6 | − 98.6 ± 30.1 | 112.2 ± 40.0 | 70.0 ± 19.1 | 307.7 ± 93.0 | − 361.4 ± 128.8 |
| Mid anterior | − 20.6 ± 5.7 | − 109.9 ± 23.2 | 96.6 ± 30.1 | 64.5 ± 14.4 | 291.4 ± 63.7 | − 382.5 ± 111.2 |
| Mid anteroseptal | − 20.3 ± 5.9 | − 114.5 ± 25.7 | 101.7 ± 30.2 | 52.0 ± 15.4 | 271.6 ± 73.6 | − 277.4 ± 77.7 |
| Mid inferoseptal | − 21.2 ± 6.5 | − 107.5 ± 31.2 | 114.2 ± 34.3 | 55.4 ± 15.7 | 276.2 ± 80.2 | − 271.4 ± 95.2 |
| Mid inferior | − 15.3 ± 4.8* | − 71.7 ± 22.7* | 86.6 ± 39.4 | 59.0 ± 13.6 | 264.2 ± 70.4 | − 308.8 ± 94.0 |
| Mid inferolateral | − 19.9 ± 5.3 | − 92.3 ± 27.9 | 118.5 ± 45.6 | 62.3 ± 13.5 | 274.4 ± 76.6 | − 370.7 ± 138.6 |
| Mid anterolateral | − 14.5 ± 5.1* | − 74.5 ± 27.2* | 67.6 ± 33.4* | 62.2 ± 14.9 | 269.7 ± 74.4 | − 398.5 ± 151.1 |
| Apical anterior | − 22.8 ± 6.0 | − 122.4 ± 33.1 | 110.7 ± 39.8 | 59.1 ± 19.9 | 263.4 ± 86.1 | − 330.5 ± 122.0 |
| Apical septal | − 26.9 ± 7.4 | − 143.8 ± 37.6 | 129.5 ± 51.2 | 44.8 ± 15.7 | 207.1 ± 69.2 | − 249.2 ± 80.2 |
| Apical inferior | − 25.8 ± 7.6 | − 127.3 ± 40.0 | 131.1 ± 49.9 | 55.5 ± 12.9 | 259.3 ± 63.0 | − 290.6 ± 71.5 |
| Apical lateral | − 19.8 ± 6.3 | − 110.7 ± 40.3 | 98.3 ± 43,2 | 64.5 ± 19.0 | 294.7 ± 81.7 | − 371.2 ± 126.6 |
CS circumferential strain, CSR circumferential strain rate, RS radial strain, RSR radial strain rate, LV left-ventricle, RV right-ventricle, NA not applicable, LS longitudinal strain, LSR longitudinal strain rate
*Significantly different (p < 0.05) from other (half or more) segments of the same plane