Table 2.
Optical coherence tomography characteristic of patients in the low and high Apo B/A1 ratio groups
| Characteristics | All (n = 199) | Low ratio (n = 99) | High ratio (n = 100) | P value |
|---|---|---|---|---|
| Plaque morphology, n(%) | ||||
| Plaque rupture | 32(16.1%) | 10(10.1%) | 22(22.0%) | 0.022 |
| Plaque erosion | 32(16.1%) | 9(9.1%) | 23(23.0%) | 0.008 |
| Plaque type, n(%) | ||||
| TCFA | 57(28.6%) | 22(22.2%) | 35(35.0%) | 0.046 |
| Fibrous plaque | 54(27.1%) | 24(24.2%) | 30(30.0%) | 0.361 |
| FCT of fibrous plaque, μm, mean ± SD | 154.50 ± 102.28 | 152.20 ± 101.79 | 156.80 ± 103.98 | 0.846 |
| Lipid-rich plaque | 97(48.7%) | 47(47.5%) | 50(50.0%) | 0.722 |
| FCT of lipid-rich plaque, μm | 94.90 ± 62.56 | 85.60 ± 32.86 | 102.60 ± 79.71 | 0.404 |
| Lipid arc of lipid-rich plaque, ° | 242.22 ± 86.75 | 221.25 ± 92.94 | 259.00 ± 79.86 | 0.199 |
| Calcification | 48(24.1%) | 28(28.3%) | 20(20.0%) | 0.172 |
| Angle, ° | 171.08 ± 84.71 | 188.64 ± 94.88 | 145.33 ± 61.28 | 0.129 |
| Cholesterol crystal | 120(60.3%) | 65(65.7%) | 55(55.0%) | 0.124 |
| Macrophage | 16(8.0%) | 7(7.1%) | 9(9.0%) | 0.617 |
| Micro-vessel | 48(24.1%) | 22(22.2%) | 26(26.0%) | 0.533 |
| Intracoronary thrombus | 55(27.6%) | 24(24.2%) | 31(31.0%) | 0.287 |
| Slow/no flow | 31(15.6%) | 12(12.1%) | 19(19.0%) | 0.181 |
| Quantitative of target vessel | ||||
| MLA, mm2 | 2.04 ± 1.08 | 2.12 ± 1.02 | 1.97 ± 1.15 | 0.408 |
| MLD, mm | 1.55 ± 0.40 | 1.59 ± 0.39 | 1.51 ± 0.41 | 0.241 |
| Proximal reference vessel area, mm2 | 8.49 ± 3.19 | 8.70 ± 3.35 | 8.28 ± 3.02 | 0.418 |
| Proximal reference vessel diameter, mm | 3.30 ± 1.05 | 3.26 ± 0.62 | 3.33 ± 1.34 | 0.671 |
| Distal reference vessel area, mm2 | 6.07 ± 2.38 | 6.44 ± 2.02 | 5.07 ± 2.66 | 0.055 |
| Distal reference vessel diameter, mm | 2.77 ± 0.71 | 2.83 ± 0.44 | 2.72 ± 0.91 | 0.379 |
| Post-stent MLA, mm2 | 5.90 ± 2.41 | 5.74 ± 2.25 | 6.05 ± 2.56 | 0.437 |
| Post-stent MLD, mm | 2.73 ± 0.81 | 2.76 ± 1.01 | 2.71 ± 0.56 | 0.742 |
| Stent diameter, mm | 3.23 ± 0.47 | 3.25 ± 0.48 | 3.21 ± 0.47 | 0.670 |
| Stent length, mm | 25.05 ± 9.02 | 24.08 ± 8.60 | 26.01 ± 9.39 | 0.188 |
| Maximal dilatation pressure, atm | 20.44 ± 3.63 | 20.38 ± 3.83 | 20.50 ± 3.44 | 0.849 |
| TP volume | 1.81 ± 1.55 | 1.47 ± 1.28 | 2.16 ± 1.71 | 0.001 |
SD standard deviation, TCFA thin-cap fibroatheroma, FCT fibrous cap thickness, MLA minimal lumen area, MLD minimal lumen diameter, TP tissue prolapse