Table 3.
Pulsed- DTI-derived parameters measured at the free wall angle of the tricuspid valve annulus, data are expressed as mean ± SD
| Scleroderma (n = 22) |
Control (n = 22) |
P value | |
|---|---|---|---|
| Sm, cm/s | 11.6 ± 2.3 | 13.9 ± 2.7 | 0.005 |
| Em, cm/s | 11.3 ± 3.4 | 12.9 ± 3.6 | 0.128 |
| Am, cm/s | 14.1 ± 3.4 | 19 ± 5.4 | 0.002 |
| IVV, cm/s | 10.3 ± 3 | 14.8 ± 3 | < 0.001 |
| AT, ms | 44.6 ± 12.7 | 37.2 ± 9.8 | 0.026 |
| IVRT, ms | 62.4 ± 34.6 | 11.7 ± 18.2 | < 0.001 |
| IVA, m/s2 | 2.3 ± 0.4 | 4.1 ± 0.8 | < 0.001 |
| MPI | 0.55 ± 0.22 | 0.29 ± 0.09 | < 0.001 |
Sm - peak systolic myocardial velocity, Em - early diastolic myocardial velocity, Am - late diastolic myocardial velocity, IVV - isovolumetric myocardial velocity, AT - acceleration time, IVRT - isovolumetric relaxation time, IVA - isovolumetric acceleration, MPI - myocardial performance index