Table 2.
Comparison of preoperative and postoperative echocardiographic variables.
| Echographic Variables | Group A—201 pts LVEF ≥ 50% |
Group B—131 pts LVEF < 50% |
||||||
|---|---|---|---|---|---|---|---|---|
| Before Surgery | 6 Months after Surgery | 2 Years after Surgery | p 1 | Before Surgery | 6 Months after Surgery | 2 Years after Surgery | p 1 | |
| LV end-diastolic dimension (mm) | 63 ± 6 | 58 ± 9 | 55 ± 8 | 0.081 | 65 ± 6 | 62 ± 8 | 59 ± 7 | 0.012 |
| LV lateral wall thickness (mm) | 14 ± 0.2 | 13 ± 0.2 | 12 ± 0.2 | 0.045 | 13 ± 0.2 | 12 ± 0.4 | 11 ± 0.2 | <0.001 |
| IVS thickness (mm) | 13.0 ± 0.4 | 12.4 ± 0.5 | 11.7 ± 0.7 | 0.051 | 14.0 ± 0.4 | 13.0 ± 0.2 | 11.4 ± 0.4 | <0.001 |
| Mean (SD) LVEF (%) | 59 (5) | 62 (12) | 63(10) | 0.002 | 36 (4) | 38 (5) | 42 (5) | 0.066 |
| EDt (ms) | 179.95 ± 60 | 184.72 ± 65 | 230.35 ± 74 | 0.051 | 162 ± 6 | 171 ± 8 | 177 ± 7 | 0.061 |
| IVRT (ms) | 119.5 ± 74 | 120 ± 44 | 123 ± 48 | 0.042 | 57 ± 2 | 61 ± 4 | 63 ± 2 | 0.034 |
| E/A | 1.6 ± 0.4 | 1.54 ± 0.5 | 1.47 ± 0.7 | 0.071 | 2.1 ± 0.3 | 2.0 ± 0.2 | 1.8 ± 0.4 | 0.043 |
| Ea/Aa | 1.2 ± 0.2 | 1.31 ± 0.3 | 1.38 ± 0.2 | 0.084 | 1.1 ± 0.3 | 1.2 ± 0.3 | 1.3 ± 0.4 | 0.079 |
| E/Ea | 10.2 ± 0.6 | 10.1 ± 0.3 | 9.5 ± 0.5 | 0.027 | 12.5 ± 0.6 | 12.7 ± 0.5 | 11.7 ± 0.6 | 0.043 |
LV—left ventricle; IVS—interventricular septum thickness; LVEF—left ventricle ejection fraction; IVRT—isovolumetric relaxation time; Ea—early diastolic velocity; Aa—late diastolic velocity. 1 ANOVA test.