Characteristics and Pattern of Calcified Nodule and/or Nodular Calcification Detected by Intravascular Ultrasound on the Device-Oriented Composite Endpoint (DoCE) in Patients with Heavily Calcified Lesions Who Underwent Rotational Atherectomy-Assisted Percutaneous Coronary Intervention
Table 3
Angiographic findings and intravascular ultrasound findings compared between the patients with and without calcified nodule.
All patients (N = 200)
CN (n = 87)
Non-CN (n = 113)
Angiographic findings
Preintervention
Lesion length (mm)
37.36 ± 17.09
35.49 ± 17.23
38.76 ± 16.93
0.196
Reference lumen diameter (mm)
2.61 ± 0.58
2.65 ± 0.64
2.58 ± 0.53
0.388
Minimum lumen diameter (mm)
0.48 ± 0.33
0.50 ± 0.37
0.47 ± 0.30
0.473
Diameter stenosis (%)
81.35 ± 12.56
81.13 ± 12.51
81.52 ± 12.66
0.830
Postintervention
Reference lumen diameter (mm)
2.73 ± 0.45
2.78 ± 0.45
2.69 ± 0.45
0.144
Minimum lumen diameter (mm)
2.43 ± 0.40
2.46 ± 0.42
2.41 ± 0.38
0.407
Diameter stenosis (%)
10.68 ± 7.21
11.52 ± 7.83
10.04 ± 6.67
0.152
Acute lumen gain (mm)
1.95 ± 0.45
1.95 ± 0.42
1.94 ± 0.47
0.843
IVUS parameter
n = 125
n = 54
n = 71
Mean reference vessel
3.28 ± 0.70
3.35 ± 0.74
3.24 ± 0.67
0.281
Minimal stent area
6.56 ± 2.35
6.67 ± 2.58
6.48 ± 2.17
0.648
Minimal stent area ≤5 mm2
32 (25.6%)
14 (25.9%)
18 (25.4%)
0.942
Minimal stent area ≤5.5 mm2
43 (34.4%)
19 (35.2%)
24 (33.8%)
0.872
Asymmetrical stent expansion
6 (4.8%)
5 (9.3%)
1 (1.4%)
0.084
IVUS findings: plaque characteristics
Superficial calcification
196 (98.0%)
87 (100.0%)
109 (96.5%)
0.134
Concentric calcification
182 (91.0%)
80 (92.0%)
102 (90.3%)
0.679
Napkin ring sign
100 (50.0%)
43 (49.4%)
57 (50.4%)
0.887
Reverberation
140 (70.0%)
53 (60.9%)
87 (77.0%)
0.014
Calcium fracture
164 (82.0%)
75 (86.2%)
89 (78.8%)
0.174
Data presented as frequency and percentage or mean ± standard deviation. A value<0.05 indicates statistical significance. IVUS data OptiCross™ that transferred to storage source can be reviewed, but it cannot be offline analysis for measurement information. At the other site of the calcified nodule. CN, calcified nodule; IVUS, intravascular ultrasound.
