Table 3.
Follow-up Doppler echocardiographic data in the subgroups (Group 1 with SVI ≥ 35 mL/m2 and Group 2 with SVI < 35 mL/m2).
| Variable | Group 1 (n = 57) | Group 2 (n = 56) | P-value |
| Data are presented as means ± SD. EI: eccentricity index; EOA: effective orifice area; EOAI: indexed effective orifice area; IVS: interventricular septum; LAD: left anterior descending; LVEDD: left ventricular end-diastolic diameter; LVEF: left ventricular ejection fraction; LVOTd: left ventricular outflow tract diameter; LVPW: left ventricular post wall; MG: mean transvalvular pressure gradient; SVI: stroke volume index; THV: transcatheter heart valve; VTI: velocity-time integral. | |||
| Preoperative | |||
| LVOTd, mm | 24.2 ± 2.2 | 23.5 ± 2.0 | 0.081 |
| EOA, cm2 | 0.61 ± 0.16 | 0.63 ± 0.19 | 0.652 |
| LVEF, % | 57.69 ± 12.07 | 53.16 ± 11.91 | 0.052 |
| Postoperative | |||
| SVI, mL/m2 | 43.34 ± 7.24 | 27.97 ± 4.78 | < 0.001 |
| IVS, mm | 11.33 ± 1.95 | 11.78 ± 2.03 | 0.241 |
| LVPW, mm | 11.02 ± 1.92 | 11.30 ± 1.83 | 0.442 |
| LVEDD, mm | 50.2 ± 6.1 | 47.7 ± 6.7 | 0.041 |
| LAD, mm | 40.9 ± 6.5 | 42.2 ± 6.8 | 0.279 |
| LVEF, % | 64.9 ± 9.1 | 64.0 ± 10.5 | 0.663 |
| MG of THV, mmHg | 9.9 ± 4.5 | 8.9 ± 4.1 | 0.026 |
| THV associated | |||
| THV size, mm | 26.5 ± 1.8 | 25.5 ± 2.3 | 0.028 |
| LVOTd1, cm | 1.94 ± 0.19 | 1.69 ± 0.19 | < 0.001 |
| LVOTd2, cm | 1.53 ± 0.15 | 1.42 ± 0.15 | < 0.001 |
| VTI of LVOT in level 1, cm | 25.1 ± 4.8 | 21.6 ± 5.3 | < 0.001 |
| VTI of LVOT in level 2, cm | 29.0 ± 5.2 | 26.1 ± 5.3 | 0.005 |
| VTI of THV, cm | 44.7 ± 10.6 | 36.9 ± 8.8 | < 0.001 |
| EOA1, cm2 | 1.70 ± 0.42 | 1.42 ± 0.30 | < 0.001 |
| EOA2, cm2 | 1.54 ± 0.44 | 1.43 ± 0.38 | 0.164 |
| EOAI1, cm2/m2 | 1.01 ± 0.23 | 0.85 ± 0.20 | < 0.001 |
| EOAI2, cm2/m2 | 0.92 ± 0.24 | 0.85 ± 0.23 | 0.138 |
| Depth of THV in LVOT, mm | 11.70 ± 3.72 | 11.49 ± 3.92 | 0.786 |
| EI1 | 0.05 ± 0.05 | 0.04 ± 0.04 | 0.953 |
| EI2 | 0.11 ± 0.06 | 0.11 ± 0.06 | 0.295 |