Myocardial fractional flow reserve (FFRmyo), coronary fractional flow reserve (FFRcor), and pressure derived coronary collateral flow (PDCF) index before PCI, during balloon inflation, and after PCI
| FFRmyo | FFRcor | PDCF | |
|---|---|---|---|
| Data are mean (SD). | |||
| Before PCI | 0.49 (0.24) | 0.34 (0.29) | 0.15 (0.11) |
| During occlusion | 0.25 (0.12) | ||
| After PCI | 0.94 (0.04) | 0.91 (0.06) | 0.03 (0.03) |