Table 2.
Optical coherence tomography analysis
| HIP | Non-HIP | P-value | |
|---|---|---|---|
| (46 segments) | (91 segments) | ||
| Lipid-rich plaque | 44 (96%) | 64 (70%) | <0.001 |
| Lipid length, mm | 5.9 (4.7, 7.8) | 3.6 (2.6, 4.6) | <0.001 |
| Maximum lipid arc (°) | 188 (169, 209) | 139 (90, 173) | <0.001 |
| Average lipid arc (°) | 159 (133, 174) | 99 (80, 147) | <0.001 |
| Lipid index | 895 (716, 1212) | 336 (220, 635) | <0.001 |
| Minimum fibrous cap thickness (μm) | 180 (150, 210) | 190 (150, 220) | 0.180 |
| TCFA | 4 (9%) | 4 (4%) | 0.442 |
| Healed plaque rupture | 33 (72%) | 16 (18%) | <0.001 |
| Plaque rupture | 6 (13%) | 14 (15%) | 0.802 |
| Calcification | 14 (30%) | 36 (40%) | 0.350 |
| Thrombus | 5 (11%) | 7 (8%) | 0.537 |
| Red thrombus | 1 (20%) | 1 (14%) | |
| White thrombus | 4 (80%) | 6 (86%) | |
| Macrophage accumulation | 30 (65%) | 42 (46%) | 0.046 |
| Cholesterol crystal | 21 (46%) | 20 (22%) | 0.006 |
| Microchannel | 20 (43%) | 31 (34%) | 0.349 |
HIP, high-intensity plaque; TCFA, thin cap fibroatheroma.