Table 3.
Echocardiographic data at discharge
| SAVR group | TAVI group | P value | N of patients evaluated | |
|---|---|---|---|---|
| N = 564 | N = 1100 | N = 1664 | ||
| Vmax (m/s) | 2.32 ± 0.44 | 2.24 ± 0.45 | 0.001 | 1653 |
| Mean aortic PG (mm Hg) | 11.9 ± 4.9 | 11.0 ± 4.8 | 0.001 | 1647 |
| EOA (cm2) | 1.57 ± 0.39 | 1.79 ± 0.48 | < 0.001 | 1365 |
| LVEF, % | 58.6 ± 10.9 | 61.2 ± 9.9 | < 0.001 | 1662 |
| LV end-diastolic diameter (mm) | 44 ± 6 | 44 ± 6 | 0.02 | 1662 |
| LV end-systolic diameter (mm) | 30 ± 7 | 29 ± 6 | < 0.001 | 1641 |
| LV Mass | 167 ± 53 | 165 ± 46 | 0.44 | 1642 |
| LVMI (g/m2) | 103 ± 30 | 110 ± 28 | < 0.001 | 1642 |
| Stroke volume (ml/m2) | 62 ± 17 | 72 ± 20 | < 0.001 | 1294 |
| Paravalvular aortic regurgitation ≥ moderate | 0 (0%) | 0 (0%) | – | 1682 |
| Patient–prosthesis mismatch* | < 0.001 | 1365 | ||
| Moderate | 85 (26%) | 93 (9.0%) | ||
| Severe | 16 (4.8%) | 27 (2.6%) |
EOA was measured by using equation of continuity
*Moderate Patient-Prosthesis Mismatch was defined as indexed effective orifice area (cm2/m2) 0.85–0.65 cm2/m2 for BMI < 30 kg/m2, OR 0.70–0.55 cm2/m2 for BMI > 30 kg/m2. Severe Patient-Prosthesis Mismatch was defined as indexed effective orifice area (cm2/m2) < 0.65 cm2/m2 for BMI < 30 kg/m2, OR < 0.55 cm2/m2 for BMI > 30 kg/m2
Vmax peak aortic jet velocity, PG pressure gradient, EOA effective orifice area; AVA aortic valve area, AS aortic stenosis, LV left ventricular, LVEF left ventricular ejection fraction, LVMI left ventricular mass index, BMI body mass index