Laser Vaporization of Intracoronary Thrombus and Identifying Plaque Morphology in ST-Segment Elevation Myocardial Infarction as Assessed by Optical Coherence Tomography
Table 4
Comparison between ruptured and nonruptured plaque.
Ruptured plaque (n = 58)
Nonruptured plaque (n = 31)
value
Predominant type of thrombus
0.001
Red thrombus
44 (75.9%)
13 (43.3%)
White thrombus
5 (8.6%)
12 (40.0%)
Mixed thrombus
9 (15.5%)
5 (16.7%)
Thrombus length (mm)
7.1 ± 3.1
6.9 ± 4.2
0.532
Thrombus volume (mm3)
After manual thrombectomy
70.4 (47.8–89.8)
49.5 (33.9–70.0)
0.035
After ELCA
46.2 (30.4–62.8)
42.2 (26.0–60.9)
0.495
After ballooning
14.4 (3.9–28.0)
12.7 (4.5–31.7)
0.945
Reduction of thrombus volume by ELCA
17.5 (8.9–30.1)
8.5 (0.7–17.7)
0.004
Luminal volume (mm3)
After manual thrombectomy
69.5 (52.3–90.4)
70.6 (51.4–80.4)
0.676
After ELCA
91.5 (70.7–107.7)
79.4 (59.9–92.9)
0.068
After ballooning
128.2 (102.8–160.9)
106.4 (79.8–123.9)
0.014
Minimal lumen area (mm2)
After manual thrombectomy
1.4 ± 0.7
1.4 ± 0.7
0.996
After ELCA
2.5 ± 1.0
2.3 ± 0.8
0.588
After ballooning
5.8 ± 1.9
5.0 ± 1.9
0.034
Data are presented as n (%), median (interquartile range), or mean ± SD. ELCA = excimer laser coronary angioplasty.