TABLE 3.
Procedural characteristics in matched cohorts.
| Total (n = 300) | COT (n = 150) | Non-COT (n = 150) | P-value | |
| Prosthesis size 23 mm | 4 (1.3) | 2 (1.3) | 2 (1.3) | 0.999 |
| Prosthesis size 26 mm | 73 (24.3) | 36 (24.0) | 37 (24.7) | 0.893 |
| Prosthesis size 29 mm | 137 (45.7) | 73 (48.7) | 64 (42.7) | 0.297 |
| Prosthesis size 34 mm | 85 (28.3) | 38 (25.3) | 47 (31.3) | 0.249 |
| Contrast agent, ml | 89.9 ± 34.2 | 82.8 ± 33.4 | 96.9 ± 33.6 | < 0.001 |
| Fluoroscopy time, min | 19.1 ± 7.7 | 18.4 ± 7.6 | 19.8 ± 7.6 | 0.023 |
| Dose area product, Gy × cm2 | 4413 ± 3288 | 4951 ± 3662 | 3875 ± 2775 | 0.005 |
| Pre-dilatation | 136 (45.3) | 71 (47.3) | 65 (43.3) | 0.487 |
| Post-dilatation | 42 (14.0) | 23 (15.3) | 19 (12.7) | 0.506 |
| Resheathing | 114 (38.0) | 71 (47.3) | 43 (28.7) | < 0.001 |
| Valve dislocation | 4 (0.1) | 2 (0.1) | 2 (0.1) | 0.999 |
| Mean area oversizing,% | 7.9 ± 7.4 | 7.7 ± 6.4 | 8.1 ± 8.4 | 0.643 |
| Need for a second transcatheter valve | 2 (1.3) | 2 (1.3) | 0 (0.0) | 0.156 |
| Coronary obstruction | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0.999 |
| Conversion to surgery | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0.999 |
Values are mean ± SD or n (%).