Table 2.
IVUS analysis in the scaffold segment at baseline and follow-up (n = 18 lesions)
| Baseline | Follow-up | Difference % based on individual data | P value | |
|---|---|---|---|---|
| Mean EEM area (mm2) | 14.08 ± 3.14 | 14.32 ± 3.13 | 2.54 ± 12.77 | 0.349 |
| PBS area (mm2) | 2.39 ± 1.85 | 2.76 ± 1.79 | 7.31 (−3.86 to 26.54) | 0.078 |
| Mean Lumen area (mm2) | 6.37 ± 0.90 | 5.98 ± 0.97 | −6.19 ± 7.13 | 0.006 |
| Fibrous tissue (mm2) | 0.59 (0.28–1.11) | 1.01 (0.59–1.94) | 42.76 (14.91–122.31) | 0.004 |
| Fibrous tissue (%) | 28.10 (26.15–33.31) | 43.90 (34.82–51.35) | 45.02 (13.06–62.50) | 0.001 |
| Fibro-fatty tissue (mm2) | 0.04 (0.01–0.14) | 0.12 (0.06–0.22) | 200.14 (50.52–819.11) | 0.011 |
| Fibro-fatty tissue (%) | 1.82 (0.83–4.08) | 5.16 (3.85–6.86) | 163.77 (56.34–513.07) | 0.004 |
| Necrotic core (mm2) | 0.89 (0.52–1.53) | 0.81 (0.59–1.41) | −8.29 (−18.64–11.35) | 0.369 |
| Necrotic core (%) | 43.24 (38.77–52.71) | 36.06 (32.53–43.79) | −15.59 (−27.87–1.06) | 0.016 |
| Dense calcium (mm2) | 0.39 (0.08–0.55) | 0.27 (0.15–0.46) | −20.94 (−42.72–14.30) | 0.048 |
| Dense calcium (%) | 20.28 (11.95–27.04) | 11.36 (8.59–18.78) | −30.16 (−50.71–−20.20) | 0.002 |
Data are expressed as mean ± SD or median and interquartile range, according to their normal or not normal distribution, respectively
EEM external elastic membrane, PBS plaque behind struts