Characteristics of ‘jump in’ and ‘jump out’ groups
| Jump out (n=31) | Jump in (n=5) | P value | |
| Lesion location | 0.078 | ||
| LAD | 16 (51.6%) | 3 (50.0%) | |
| LCx | 3 (9.7%) | 2 (40.0%) | |
| RCA | 12 (38.7%) | 0 (0%) | |
| fQFR | 0.71 (0.64–0.73) | 0.84 (0.84–0.89) | 0.0017 |
| cQFR | 0.73 (0.68–0.74) | 0.85 (0.83–0.88) | <0.001 |
| FFR | 0.85 (0.83–0.91) | 0.74 (0.72–0.74) | <0.001 |
| CFR | 2.2 (1.6–3.0) | 3.5 (3.4–4.2) | 0.13 |
| IMR | 28.9 (17.9–43.0) | 13.4 (12.9–14.1) | 0.019 |
| Corrected IMR | 28.3 (17.5–41.7) | 12.3 (11.7–12.9) | <0.001 |
| Baseline, Tmn (s) | 0.58 (0.20–0.84) | 0.72 (0.46–0.96) | 0.65 |
| Hyperaemic, Tmn (s) | 0.26 (0.13–0.49) | 0.21 (0.19–0.24) | <0.001 |
| Diameter stenosis (%) | 73.4 ± 5.3 | 46.2±7.7 | 0.21 |
| Area stenosis (%) | 56.5 (52.7–59.6) | 59.4 (58.3–62.5) | 0.095 |
| Lesion length (mm) | 23.5 (18.6–26.3) | 17.8 (17.4–18.1) | 0.0025 |
| MLD (mm) | 1.40 (1.33–1.58) | 1.10 (1.10–1.25) | 0.97 |
| RD (mm) | 2.9 (2.7–3.2) | 2.9 (2.5 –3.2) | 1 |
| Duke jeopardy score | 2 (2 – 6) | 4 (2– 4) | 1 |
Variables are expressed as n (%), median (IQR) or mean±SD.
CFR, coronary flow reserve; cQFR, contrast-flow quantitative flow ratio; FFR, fractional flow reserve; fQFR, fixed-flow quantitative flow ratio; IMR, index of microcirculatory resistance; IMR, index of microvascular resistance; LAD, left anterior descending artery; LCx, left circumflex artery; MLD, minimal lumen diameter; RCA, right coronary artery; RD, reference diameter; Tmn, mean transit time.