Effect of Crack Patterns in Calcified Plaque on Lumen Area after Stenting for a Severe Calcified Coronary Artery (from the Optical Frequency Domain Imaging-Guided Percutaneous Coronary Artery Intervention for Calcified Lesion Registry)
Table 3
OFDI analysis.
Variable
Type 0 (n = 58)
Type 1 (n = 72)
Type 2 (n = 112)
value
Estimated vessel diameter (mm)
4.05 ± 0.49
4.09 ± 0.51
3.89 ± 0.46
0.01
Estimated vessel area (mm2)
13.04 ± 3.26
13.27 ± 3.17
12.03 ± 2.74
0.01
Major axis diameter before using CB (mm)
2.36 ± 0.37
2.29 ± 0.37
2.11 ± 0.46
0.0004
Minor axis diameter before using CB (mm)
1.79 ± 0.31
1.72 ± 0.31
1.57 ± 0.31
0.0001
Lumen area before using CB (mm2)
3.37 ± 1.02
3.10 ± 0.91
2.73 ± 1.01
0.0003
Calcium arc (°)
251 ± 56
294 ± 62
277 ± 53
0.0001
Calcium arc 315–360°
8 (14%)
32 (44%)
28 (25%)
0.0009
Calcium arc 270–314°
16 (28%)
18 (25%)
40 (36%)
0.25
Calcium arc 225–269°
10 (17%)
12 (17%)
24 (21%)
0.67
Calcium arc 180–224°
24 (41%)
10 (15%)
20 (18%)
0.0005
Major axis diameter after using CB (mm)
2.56 ± 0.32
2.63 ± 0.42
2.67 ± 0.41
0.22
Minor axis diameter after using CB (mm)
1.99 ± 0.28
1.99 ± 0.28
1.95 ± 0.29
0.52
Lumen area after using CB (mm2)
4.08 ± 0.87
4.21 ± 1.08
4.17 ± 1.15
0.80
Cracked calcium thickness (µm)
N/A
465 ± 162 (n = 42)
387 ± 312 (n = 26)
0.08
Final lumen area (mm2)
6.43 ± 1.31
6.38 ± 1.36
6.66 ± 1.51
0.38
Symmetry index
0.86 ± 0.09
0.84 ± 0.08
0.86 ± 0.08
0.45
Final lumen area/estimated vessel area (%)
51.2 ± 12.4
50.0 ± 12.2
56.9 ± 13.0
0.0005
Data are presented as number (%) or mean ± standard deviation, unless otherwise noted. CB, cutting balloon; OFDI, optical frequency domain imaging.
