Table 6.
Echocardiographic data (on admission and at discharge).
| Pre-Matched Cohort | Propensity-Score-Matched Cohort | |||||
|---|---|---|---|---|---|---|
| Isolated MIAVR < 75 (n = 956) | Isolated MIAVR ≥ 75 (n = 383) | p | Isolated MIAVR < 75 (n = 347) | Isolated MIAVR ≥ 75 (n = 347) | p | |
| Preoperative AVA (cm2), mean ± SD | 0.7 ± 0.2 | 0.7 ± 0.2 | 0.34 | 0.7 ± 0.2 | 0.7 ± 0.1 | 0.89 |
| Preoperative Pmax (mmHg), mean ± SD | 78.4 ± 26.1 | 75.0 (21.8) | 0.01 * | 77.3 ± 32.3 | 73.8 ± 20.4 | 0.15 |
| Preoperative Pmean (mmHg), mean ± SD | 47.6 ± 14.6 | 46.0 ± 15.0 | 0.01 * | 46.7 ± 14.9 | 45.2 ± 14.1 | 0.12 |
| Postoperative Pmax (mmHg), mean ± SD | 24.8 ± 8.1 | 24.5 ± 7.9 | 0.70 | 11.0 ± 8.0 | 10.5 ± 5.0 | 0.11 |
| Postoperative Pmean (mmHg), mean ± SD | 14.1 ± 4.6 | 14.0 ± 4.6 | 0.76 | 14.0 ± 4.7 | 14.1 ± 4.7 | 0.98 |
| Paravalvular AR, n (%) | 31 (3.3) | 10 (2.6) | 0.55 | 11 (3.2) | 10 (2.9) | ≥0.99 |
| Paravalvular AR ≥ II, n (%) | 13 (1.4) | 4 (1.1) | 0.30 | 2 (0.6) | 4 (1.2) | 0.68 |
Note: Bold and italic values indicate statistical significance: *, p ≤ 0.05. Abbreviations: MIAVR, minimally invasive aortic valve replacement; AVA, aortic valve area; Pmax, peak aortic valve gradient; Pmean, mean aortic valve gradient; AR, aortic regurgitation.