Table 2.
Differences in OCT measurements between plaque erosion and control groups.
| Characteristic | Erosion (N = 24) | Control (N = 22) | p-value |
|---|---|---|---|
| Culprit lesion location | <0.0001 | ||
| Proximal LAD n (%) | 7 (29) | 10 (45) | |
| Mid/distal LAD n (%) | 5 (21) | 5 (23) | |
| LCX n (%) | 2(8) | 4 (18) | |
| RCA n (%) | 10 (42) | 3 (14) | |
| Lesion length (mm) | 15.3 ± 5.8 | 15.2 ± 4.8 | 0.98 |
| Minimal lumen area (mm2) | 1.7 ± 0.5 | 2.0 ± 0.6 | 0.08 |
| Reference lumen area (mm2) | 7.8 ± 1.9 | 8.0 ± 2.1 | 0.85 |
| % Lumen area stenosis | 77 ± 7 | 74 ± 8 | 0.15 |
| Plaque type by quadrant a | |||
| Total quadrants at the region of interest | 290 ± 49 | 358 ± 125 | 0.09 |
| Lipid rich | 30.2 ± 16 | 119.1 ± 74.3 | 0.001 |
| % of diseased quadrants | 15.4 ± 9.9 | 49.7 ± 24.7 | 0.001 |
| Fibrous | 130.6 ± 47.8 | 73.9 ± 61.7 | 0.001 |
| % of diseased quadrants | 66.3 ± 39 | 28.8 ± 17 | 0.001 |
| Calcified | 36 ± 11.3 | 51.1 ± 58.2 | 0.11 |
| % of diseased quadrants | 18.3 ± 12 | 21.5 ± 21 | 0.10 |
| Total diseased quadrants | 196.8 ± 61.1 | 244.1 ± 101.7 | 0.19 |
| Maximum lipid arc (°) | 85.4 ± 48.2 | 196.5 ± 61.8 | 0.001 |
| Maximum calcium arc (°) | 75.6 ± 70.0 | 114.3 ± 102.2 | 0.02 |
| Minimal fibrous cap thickness (μm) | 92.3 ± 16 | 93.1 ± 23.6 | 0.90 |
| Cholesterol crystals n (%) | 9 (37%) | 15 (68%) | 0.001 |
Values are presented as mean ± SD for continuous variables and n (%) for categorical variables.
a
Absolute number of quadrants with each plaque type throughout the lesion, measured at 0.2 mm intervals.