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 (mm^3)
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 (mm^3)
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 (mm^2)
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.