Table 4 OCT findings
Variables | Nodular (n = 238) | Non- Nodular (n = 262) | p value |
|---|---|---|---|
Pre-intervention findings | |||
Lesion Length, mm | 31 (25.2, 38.5) | 29 (22.8, 34.1) |  < 0.001 |
Proximal reference lumen area, mm2 | 7.8 (6.0, 10.0) | 7.9 (6.1, 10.3) | 0.381 |
Distal reference lumen area, mm2 | 4.4 (3.3, 6.4) | 5.2 (3.6, 6.9) | 0.046 |
Mean reference lumen area, mm2 | 6.4 (4.9, 8.1) | 6.7 (5.2, 8.5) | 0.216 |
Minimum lumen area, mm2 | 0.9 (0.8, 1.2) | 0.9 (0.7, 1.2) | 0.661 |
Maximum lipid arc, ° | 288.6 (227.6, 326.9) | 284.3 (211.2, 324.5) | 0.418 |
Minimum FCT, μm | 50 (40, 60) | 50 (40, 60) | 0.563 |
Thin-cap fibroatheroma | 204 (86.1%) | 229 (87.4%) | 0.662 |
Thrombus | 234 (98.3%) | 260 (99.2%) | 0.299 |
Calcification depth, µm | 60 (40, 80) | 70 (50, 122.5) |  < 0.001 |
Superficial, | 215 (90.3%) | 188 (71.8%) |  < 0.001 |
Deep, | 23 (9.7%) | 74 (28.2%) | Â |
OCT-based calcium score | |||
 < 4 | 71 (29.8%) | 153 (58.4%) |  < 0.001 |
4 | 167 (70.2%) | 109 (41.6%) | Â |
Post-intervention | |||
Proximal reference lumen area, mm2 | 8.3 (6.7, 10.2) | 8.9 (6.8, 11.5) | 0.084 |
Distal reference lumen area, mm2 | 5.6 (4.2, 7.7) | 5.8 (4.2, 7.6) | 0.592 |
Mean reference lumen area, mm2 | 7.0 (5.6, 8.9) | 7.3 (5.8, 9.3) | 0.255 |
Minimum stent area, mm2 | 5.0 (3.9, 6.3) | 5.4 (4.2, 6.7) | 0.011 |
Stent expansion, % | 70 (62.7, 81.8) | 75 (65.2, 86.6) | 0.004 |
Stent under-expansion | 172 (72.3%) | 156 (59.5%) | 0.003 |
Stent eccentricity index | 0.2 (0.1, 0.2) | 0.1 (0.1, 0.2) | 0.228 |
Presence of stent edge dissection | 7 (2.9%) | 8 (3.1%) | 0.935 |
Major (arc ≥ 60°, ≥ 3 mm in length) | 3 (42.9%) | 5 (62.5%) | 0.405 |
Minor (arc ≤ 60°, ≤ 3 mm in length) | 4 (57.1%) | 3 (37.5%) |  |
Presence of stent strut malaposition | |||
Any | 97 (41.1%) | 104 (39.7%) | 0.749 |
Major | 78 (80.4%) | 74 (71.2%) | 0.127 |
Minor | 19 (19.6%) | 30 (28.8%) | Â |
Tissue protrusion | 232 (97.5%) | 259 (98.9%) | 0.207 |