TABLE 2.
Lesion and procedural characteristics of the study population
| Variables | FFR > 0.8 (n = 447) | FFR < 0.8 (n = 116) | p value |
|---|---|---|---|
| Baseline | |||
| LMS | |||
| Minimal lumen area, mm2 | 5.68 ± 0.26 | 5.66 ± 0.29 | 0.501 |
| Minimal lumen diameter, mm | 1.53 ± 0.08 | 1.52 ± 0.15 | 0.778 |
| Plaque burden | 69.21 ± 9.89 | 69.52 ± 7.46 | 0.624 |
| POC | |||
| Minimal lumen area, mm2 | 5.10 ± 0.11 | 5.09 ± 0.12 | 0.852 |
| Minimal lumen diameter, mm | 1.52 ± 0.14 | 1.54 ± 0.17 | 0.218 |
| Plaque burden | 54.68 ± 3.89 | 54.80 ± 3.77 | 0.771 |
| LAD | |||
| Minimal lumen area, mm2 | 4.40 ± 0.18 | 4.41 ± 0.17 | 0.473 |
| Minimal lumen diameter, mm | 1.15 ± 0.17 | 1.14 ± 0.13 | 0.427 |
| Plaque burden | 71.53 ± 5.75 | 71.71 ± 6.22 | 0.759 |
| LCX | |||
| Minimal lumen area, mm2 | 4.89 ± 0.07 | 4.83 ± 0.19 | .002 |
| Minimal lumen diameter, mm | 2.25 ± 0.15 | 2.23 ± 0.14 | 0.142 |
| Plaque burden | 35.45 ± 3.20 | 35.58 ± 3.09 | 0.690 |
| LM‐LAD stent | |||
| Diameter (mm) | 3.57 ± 0.13 | 3.55 ± 0.17 | 0.873 |
| Length (mm) | 31.38‐ ± 4.79 | 32.55 ± 4.45 | .017 |
| LM‐LAD lesion length (mm) | 25.13 ± 4.81 | 26.08 ± 4.99 | .062 |
| After LM‐LAD stenting | |||
| LMS | |||
| Minimal lumen area, mm2 | 10.56 ± 1.78 | 10.33 ± 0.53 | .024 |
| Minimal lumen diameter, mm | 3.52 ± 0.15 | 3.48 ± 0.16 | .015 |
| Plaque burden | 16.49 ± 5.54 | 17.82 ± 6.09 | .033 |
| POC | |||
| Minimal lumen area, mm2 | 11.46 ± 0.92 | 11.41 ± 0.88 | 0.594 |
| Minimal lumen diameter, mm | 3.40 ± 0.056 | 3.39 ± 0.096 | 0.537 |
| Plaque burden | 17.99 ± 5.38 | 18.98 ± 5.64 | .081 |
| LAD | |||
| Minimal lumen area, mm2 | 9.67 ± 0.38 | 9.62 ± 0.48 | 0.286 |
| Minimal lumen diameter, mm | 2.78 ± 0.13 | 2.77 ± 0.25 | 0.638 |
| Plaque burden | 16.01 ± 2.36 | 16.39 ± 2.78 | 0.115 |
| LCx | |||
| Minimal lumen area, mm2 | 4.19 ± 0.25 | 3.84 ± 0.08 | <.001 |
| Minimal lumen diameter, mm | 2.01 ± 0.17 | 1.75 ± 0.14 | <.001 |
| Plaque burden | 52.68 ± 5.32 | 59.55 ± 2.93 | <.001 |
| Mean LCx FFR value | 0.87 ± 0.05 | 0.72 ± 0.04 | <.001 |
Note: Data are mean ± SD or number (%) of patients.
Abbreviations: FFR, fractional flow reserve; IVUS, intravascular ultrasound; LCx, left circumflex artery; LMS, left main stem; POC, polygon of confluence; LAD, left anterior descending artery.