Table 4.
Coronary Hemodynamic Data
| Pre‐TAVI | Post‐TAVI | Follow‐Up | P Valuea | |
|---|---|---|---|---|
| FFR | 0.85 (0.76–0.88) | 0.79 (0.74–0.83) | 0.71 (0.65–0.77) | <0.001/<0.001/<0.001b |
| CFR | 1.28 (1.10–1.51) | 1.65 (1.47–1.85) | 1.94 (1.69–2.25) | <0.001/<0.001/<0.001b |
| iFR | 0.82 (0.80–0.90) | 0.83 (0.77–0.88) | 0.83 (0.73–0.90) | 0.735 |
| PdPa | 0.87 (0.84–0.93) | 0.89 (0.84–0.94) | 0.91 (0.84–0.94) | 0.663 |
| FFR flow, cm/s | 26.36 (23.82–31.82) | 30.78 (29.70–34.68) | 40.20 (32.14–50.00) | 0.012/<0.001/<0.001b |
| iFR flow, cm/s | 25.48 (21.12–33.65) | 24.54 (20.74–27.88) | 25.89 (22.57–28.96) | 0.500 |
| PdPa flow, cm/s | 19.98 (17.51–21.57) | 19.70 (17.49–22.93) | 21.44 (19.80–26.74) | 0.397 |
| BMR, mm Hg/cm per s | 3.55 (3.38–4.99) | 4.26 (3.24–5.03) | 4.05 (3.73–5.38) | 0.397 |
| HMR, mm Hg/cm per s | 2.54 (2.28–2.90) | 2.18 (1.59–2.41) | 1.95 (1.59–2.34) | <0.001/<0.001/<0.001b |
| BSRI, mm Hg/cm per s | 0.36 (0.31–0.44) | 0.37 (0.30–0.44) | 0.32 (0.15–0.52) | 0.397 |
| HSRI, mm Hg/cm per s | 0.50 (0.39–0.87) | 0.51 (0.46–0.63) | 0.46 (0.30–0.69) | 0.397 |
Data are expressed as median (interquartile range). BMR indicates basal microvascular resistance; BSRI, basal stenosis resistance index; CFR, coronary flow reserve; FFR, fractional flow reserve; HMR, hyperemic microvascular resistance; HSRI, hyperemic stenosis resistance index; iFR, instantaneous wave‐free ratio; PdPa, distal pressure divided by aortic pressure.
P value from the Friedman test, the first P value is for a significant difference between all 3 groups. When a significant difference was found across all groups, the 3 stated P values depict the stepwise comparison between all individual groups (pre–transcatheter aortic valve implantation (TAVI) vs post‐TAVI, pre‐TAVI vs follow‐up, and post‐TAVI vs follow‐up). If no significant difference was found using the Friedman test, only this P value is stated.
P<0.05.