Table 3.
Procedural characteristics of the unmatched and matched cohorts.
| Unmatched-Population (n = 692) |
PS-Matched-Population (n = 144) |
|||||
|---|---|---|---|---|---|---|
| Overall n = 692 |
iSAVR < 75 Years n = 604 |
TAVR < 75 Years n = 88 |
iSAVR < 75 Years n = 72 |
TAVR < 75 Years n = 72 |
p-Value | |
| Procedural Characteristics | ||||||
| Biological valve prosthesis, n (%) | 595 (86.0) | 507 (83.9) | 88 (100) | 62 (86.1) | 72 (100) | n/a ‡ |
| Balloon-expandable THV, n (%) | 56 (63.6) | 43 (59.7) | n/a ‡ | |||
| Prosthesis size in mm, mean (±SD) | 23.2 (3.2) | 22.8 (3.1) | 26.3 (2.2) | 22.7 (2.2) | 26.5 (2.1) | <0.001 |
| Full sternotomy, n (%) | 494 (81.2) | 66 (91.7) | n/a ‡ | |||
| Cross-clamp time, mean (±SD) | 58.3 (31) | 58.3 (31) | 0 (0) | 62.8 (21.5) | 0 (0) | n/a ‡ |
| Perfusion time, mean (±SD) | 87.8 (52.1) | 87.8 (52.1) | 0 (0) | 111.2 (40.2) | 0 (0) | n/a ‡ |
| Transfemoral access, n (%) | 42 (47.7) | 29 (40.3) | n/a ‡ | |||
| Predilatation, n (%) | 43 (48.9) | 38 (52.8) | n/a ‡ | |||
| Postdilatation, n (%) | 9 (10.2) | 5 (6.9) | n/a ‡ | |||
| Paravalvular leak > mild, n (%) | 1 (0.1) | 0 (0) | 1 (1.1) | 0 (0) | 1 (1.4) | 0.999 |
| Postoperative circulatory support, n (%) | 8 (1.2) | 7 (1.2) | 1 (1.1) | 4 (5.6) | 0 (0) | n/a ‡ |
| Extubated in the operating room, n (%) | 10 (1.4) | 0 (0) | 10 (12) | 0 (0) | 6 (8.3) | n/a ‡ |
| Total hours ventilated, median (±IQR) | 8 (8) | 8.0 (8) | 4 (7) | 12 (27) | 4 (7) | <0.001 |
| Re-intubated during hospital stay, n (%) | 22 (3.2) | 19 (3.1) | 3 (3.6) | 4 (5.6) | 3 (4.5) | 0.999 |
| Number of administered red blood cell units, mean (±SD) | 0.6 (1.6) | 0.6 (1.6) | 0.6 (1.2) | 1.0 (3.0) | 0.6 (1.2) | 0.242 |
| Length of stay, median (±IQR) | 11.0 (5) | 11 (5) | 9 (7) | 11.5 (6) | 9.0 (7) | 0.188 |
n/a ‡—not calculated if a variable is constant in one cohort; PS—propensity score; IQR—Interquartile range; SD—standard deviation; THV—transcatheter heart valve.