Table 2.
Cardiac magnetic resonance intratest repeatability: acquisition 1 vs acquisition 2
| Valve type | Absolute Δ (ml/s) ± SD | p value of Δ | ICC (95% CI) | p value of ICC | p value of absolute Δ AA level vs LVOT level |
|---|---|---|---|---|---|
| Antegrade flow | |||||
| Native valve | |||||
| Within valve | 1.6 ± 1.5 | 0.893 | 0.988 (0.914–0.999) | < .001 | |
| Sapien XT | 0.500 | ||||
| AA level | 1.2 ± 1.4 | 0.225 | 0.993 (0.951–0.999) | < .001 | |
| Within THV | 1.1 ± 0.5 | 0.686 | 0.991 (0.936–0.999) | < .001 | |
| LVOT level | 2.2 ± 1.8 | 0.686 | 0.979 (0.853–0.998) | < .001 | |
| CoreValve | 0.500 | ||||
| AA level | 2.5 ± 3.4 | 0.225 | 0.930 (0.579–0.992) | 0.001 | |
| Within THV | 1.2 ± 0.9 | 0.500 | 0.604 (− 0.292–0.949) | 0.079 | |
| LVOT level | 1.7 ± 1.0 | 0.225 | 0.991 (0.934–0.999) | < .001 | |
| Retrograde flow | |||||
| Sapien XT | 0.686 | ||||
| AA level | 2.2 ± 2.4 | 0.225 | 0.971 (0.806–0.997) | < .001 | |
| Within THV | 2.9 ± 1.9 | 0.345 | 0.881(0.364–0.987) | 0.005 | |
| LVOT level | 1.7 ± 0.5 | 0.686 | 0.992 (0.943–0.999) | < .001 | |
| CoreValve | 0.686 | ||||
| AA level | 0.8 ± 0.8 | 0.345 | 0.997 (0.978–1.000) | < .001 | |
| Within THV | 2.3 ± 1.2 | 0.686 | 0.927 (0.564–0.992) | 0.001 | |
| LVOT level | 1.3 ± 1.5 | 0.225 | 0.993 (0.949–0.999) | < .001 | |
ICC intraclass correlation coefficient, AA ascending aorta, LVOT left ventricular outflow tract, THV transcatheter heart valve