Table 2.
Comparison of LV strain parameters between normal controls and patients with CTD.
| Normal controls | CTD | CTD | ||
|---|---|---|---|---|
| (n = 30) | (n = 98) | IIM(n = 56) | non-IIM (n = 42) | |
| Global | ||||
| Radial PS (%) | 30.9 ± 7.6 | 23.8 ± 9.5# | 26.8 ± 8.1 | 19.7 ± 9.7*§ |
| Circumferential PS (%) | −20.9 ± 1.9 | −18.5 ± 5.1# | −20.5 ± 3.7 | −15.8 ± 5.4 *§ |
| Longitudinal PS (%) | −10.4 ± 3.2 | −8.3 ± 2.8# | −8.6 ± 2.7* | −8.0 ± 2.9* |
| Basal | ||||
| Radial PS (%) | 46.8 ± 9.7 | 37.9 ± 14.6# | 41.8 ± 12.6 | 32.6 ± 15.5 *§ |
| Circumferential PS (%) | −16.8 ± 2.4 | −15.3 ± 4.6# | −17.1 ± 3.7 | −12.9 ± 4.7 *§ |
| Longitudinal PS (%) | −10.0 ± 3.5 | −8.0 ± 3.6# | −8.9 ± 3.3 | −6.8 ± 3.5*§ |
| Mid | ||||
| Radial PS (%) | 32.1 ± 8.8 | 24.6 ± 11.0# | 27.9 ± 9.6 | 20.2 ± 11.2*§ |
| Circumferential PS (%) | −21.3 ± 2.2 | −18.3 ± 5.2# | −20.3 ± 3.7 | −15.6 ± 5.7 *§ |
| Longitudinal PS (%) | −12.2 ± 3.2 | −9.9 ± 3.8# | −10.8 ± 3.6 | −8.7 ± 3.8*§ |
| Apical | ||||
| Radial PS (%) | 19.1 ± 11.0 | 14.6 ± 8.1# | 17.0 ± 8.0 | 11.3 ± 7.0 *§ |
| Circumferential PS (%) | −24.9 ± 2.7 | −22.2 ± 6.2# | −24.5 ± 4.8 | −19.2 ± 6.7 *§ |
| Longitudinal PS (%) | −10.9 ± 4.9 | −8.2 ± 3.6# | −8.1 ± 3.0* | −8.4 ± 4.4 * |
Notes: Values are presented as the mean ± SD . *P < 0.017 versus normal group; §P < 0.017 versus patients with IIM; #P < 0.05 patients with CTD versus normal group. CTD, connective tissue disease; IIM, idiopathic inflammatory myopathy; PS, peak strain.