Table 4.
Right ventricle free wall longitudinal strains and strain-rates
| Variables | Controls (n = 40) | MetS (n = 39) |
MetS |
|
|---|---|---|---|---|
| Baseline (n = 33) | Follow-up (n = 33) | |||
| RV strain (%) |
|
|
|
|
| RV GLS |
−25.7 ± 4.9 |
−21.4 ± 4.5*** |
−21.8 ± 3.8 |
−24.3 ± 4.0## |
| Basal segment |
−27.1 ± 7.1 |
−23.4 ± 5.1* |
−23.7 ± 4.7 |
−24.7 ± 7.0 |
| Mid segment |
−25.4 ± 5.4 |
−20.9 ± 5.0*** |
−21.1 ± 4.7 |
−23.6 ± 4.2# |
| Apical segment |
−24.7 ± 6.1 |
−19.7 ± 6.0*** |
−20.1 ± 5.8 |
−23.7 ± 5.4## |
| RV GLS TTP (ms) |
94 ± 6 |
92 ± 10 |
93 ± 10 |
93 ± 8 |
| RV global systolic SR (.s−1) |
−1.8 ± 0.4 |
−1.2 ± 0.4*** |
−1.2 ± 0.4 |
−1.5 ± 0.4## |
| RV global systolic SR TTP (ms) |
51 ± 6 |
50 ± 9 |
48 ± 9 |
50. ± 10 |
| RV global diastolic SR (.s−1) |
1.7 ± 0.5 |
1.3 ± 0.3** |
1.3 ± 0.3 |
1.6 ± 0.4## |
| RV global diastolic SR TTP (ms) | 123 ± 10 | 121 ± 16 | 122 ± 16 | 118 ± 14 |
GLS: global longitudinal strain calculated from the mean of the basal, mid and apical segments of the right ventricle free wall, RV: right ventricular, SR: strain rate, TTP: time to peak. Significantly different from controls: *P < 0.05, **P < 0.01, ***P < 0.001. Significantly different from baseline in MetS: # P < 0.05, ## P < 0.01.