Table 3

OCT Findings at Baseline and 9-Month Follow-Up

Culprit Lesion AssessmentOverall
(N = 140)
Men
(n = 70)
Women
(n = 70)
p Value
Residual thrombus120/128 (93.8)62/64 (96.9)58/64 (90.6)0.27
Rupture site assessment
 Minimum cap thickness, μm47 ± 1248 ± 1546 ± 80.59
 Mean cap thickness, μm64 ± 1566 ± 1761 ± 120.28
 Length of plaque rupture, mm1.8 (1.2–3.0)1.8 (1.2–3.0)1.8 (1.2–3.0)0.80
Plaque constituents, %
 Fibrocalcific4.6 ± 12.74.5 ± 13.74.6 ± 11.90.74
 Fibrous14.8 ± 17.013.0 ± 16.416.8 ± 17.60.32
 Lipid-rich74.5 ± 20.079.2 ± 24.069.8 ± 23.50.09
 Normal6.0 ± 12.03.3 ± 8.88.8 ± 14.20.10
Nonrupture/erosion site assessment
 Plaque constituents, %
 Fibrocalcific10.2 ± 20.914.1 ± 25.86.3 ± 14.40.40
 Fibrous25.0 ± 31.814.1 ± 27.335.9 ± 32.90.03
 Lipid-rich56.3 ± 36.560.9 ± 38.751.6 ± 34.70.36
 Normal8.6 ± 21.610.9 ± 27.36.3 ± 14.40.96
Post-Stent Implantation(N = 139)(n = 70)(n = 69)
Mean reference vessel area, mm26.9 (5.5–9.7)8.5 (6.2–10.7)6.3 (5.1–8.3)<0.001
Minimum stent area, mm26.3 ± 2.27.1 ± 2.35.5 ± 1.9<0.001
Minimum lumen area, mm25.8 (4.5–7.6)6.8 (5.2–8.6)5.2 (4.4–6.3)<0.001
Minimum lumen area stenosis, %13.2 ± 19.911.1 ± 20.515.3 ± 19.20.22
Stent expansion index, %86 (70–96)87 (69–100)85 (71–96)0.53
Incomplete strut apposition, %5.1 (1.5–10.6)5.1 (1.5–10.8)5.0 (1.7–10.5)1.00
Follow-Up(N = 117)(n = 58)(n = 59)
Mean reference vessel area, mm26.6 (5.1–8.9)7.4 (5.7–10.5)5.9 (4.3–7.8)0.001
Minimum lumen area, mm25.18 (3.7–6.9)5.9 (4.3–7.4)5.0 (3.6–5.8)0.01
Percentage net volume obstruction, %10.3 (6.0–15.8)10.6 (6.7–16.1)10.3 (5.9–13.7)0.76
Incomplete strut apposition, %0.6 (0.0–4.8)0.9 (0.0–6.4)0.3 (0.0–3.5)0.13

Values are n/N (%), mean ± SD, or median (interquartile range).

OCT = optical coherence tomography.

  • Stent expansion index refers to minimum stent area/reference lumen area.

  • Incomplete struts apposition percentage has been estimated only when applicable.