Table 3.
Echocardiographic parameters of the study population.
| Sham (n = 26) | CPAP (n = 26) | |||
|---|---|---|---|---|
| Baseline | Follow-up | Baseline | Follow-up | |
| Traditional echocardiography parameter | ||||
| LVEDV, mL/m2 | 59.3 ± 6.3 | 57.4 ± 6.2 | 60.4 ± 9.0 | 59.5 ± 9.1 |
| LVESV, mL/m2 | 21.3 ± 3.6 | 20.5 ± 2.7 | 20.8 ± 4.7 | 21.4 ± 3.8 |
| LV mass index, g/m2 | 85.7 ± 12.8 | 83.9 ± 14.1 | 92.0 ± 15.0 | 91.2 ± 11.9 |
| LA volume index, mL/m2 | 25.9 ± 5.3 | 23.8 ± 5.3 | 26.5 ± 5.8 | 26.6 ± 5.2 |
| LVEF, % | 64 ± 6 | 64 ± 6 | 66 ± 5 | 65 ± 6 |
| S′ velocity, cm/sec | 8.4 ± 1.6 | 9.1 ± 2.0 | 8.7 ± 1.4 | 8.9 ± 1.6 |
| e′ velocity, cm/sec | 9.4 ± 2.7 | 8.7 ± 2.9 | 7.7 ± 2.2* | 8.3 ± 2.3 |
| E/e′ | 7.6 ± 1.5 | 7.9 ± 1.8 | 8.9 ± 2.4* | 8.9 ± 2.4 |
| 2D speckle-tracking indices (LVGLS and Myocardial work) | ||||
| LVGLS, % | − 18.0 ± 1.9 | − 18.0 ± 2.5 | − 17.8 ± 2.1 | − 20.0 ± 2.1*,† |
| GWI, mmHg% | 1556.8 ± 257.7 | 1505.0 ± 305.5 | 1606.8 ± 322.5 | 1586.1 ± 208.4 |
| GCW, mmHg% | 1746.3 ± 258.8 | 1700.8 ± 354.2 | 1840.5 ± 347.0 | 1789.7 ± 212.4 |
| GWW, mmHg% | 70.3 ± 39.2 | 87.4 ± 71.9 | 80.0 ± 49.2 | 60.8 ± 26.3† |
| GWE, % | 95.3 ± 3.2 | 94.0 ± 4.3† | 94.0 ± 4.5 | 95.7 ± 2.0† |
*Student’s t-test, p < 0.05, compared with the corresponding sham group.
†Paired t-test, p < 0.05, compared to baseline values within the group.
GCW global constructive work, GWE global work efficiency, GWI global work index, GWW global wasted work, LA left atrium, LV left ventricle, LVEDV left ventricular end diastolic volume, LVEF left ventricular ejection fraction, LVESV left ventricular end-systolic volume, LVGLS left ventricular global longitudinal strain.