Reattempt Percutaneous Coronary Intervention of Chronic Total Occlusions after Prior Failures: A Single-Center Analysis of Strategies and Outcomes
Table 2
Baseline angiographic characteristics of CTO lesions.
Category
Overall (n = 212)
Final success (n = 172)
Final failure (n = 40)
value
CTO target vessels
LM (%)
1 (0.4)
1 (0.6)
0 (0.0)
0.629
LAD (%)
93 (43.9)
79 (45.9)
14 (35.0)
0.210
LCX (%)
25 (11.8)
20 (11.6)
5 (12.5)
0.878
RCA (%)
93 (43.9)
72 (41.9)
21 (52.5)
0.222
In-stent occlusion (%)
14 (6.6)
10 (5.8)
4 (10.0)
0.337
Collateral channels
CC 0 (%)
4 (1.9)
1 (0.6)
3 (7.5)
0.004
CC 1 (%)
115 (54.2)
89 (51.7)
26 (65.0)
0.130
CC 2 (%)
93 (43.9)
82 (47.7)
11 (27.5)
0.021
J-CTO score
3.45 ± 0.88
3.33 ± 0.87
4.00 ± 0.72
<0.001
<3 (%)
41 (19.3)
33 (19.2)
8 (20.0)
0.907
≥3 (%)
171 (80.7)
139 (80.8)
32 (80.0)
0.907
Number of diseased vessels
Single VD
44 (21.4)
41 (24.7)
3 (7.5)
0.022
Double VD
84 (40.8)
75 (45.2)
9 (22.5)
0.014
Triple VD
66 (32.0)
39 (23.5)
27 (67.5)
<0.001
LM + multiple VD
12 (5.8)
11 (6.6)
1 (2.5)
0.471
Morphology of the proximal cap
Blunt
100 (47.2)
70 (40.7)
30 (75.0)
<0.001
Side branch at the proximal cap
153 (72.2)
118 (68.6)
35 (87.5)
0.016
Target lesion morphology
Tortuosity of the CTO lesion
59 (27.8)
47 (27.3)
12 (30.0)
0.734
CTO length ≥20 mm
160 (75.5)
122 (70.9)
38 (95.0)
0.001
Lesion calcification
Mild
169 (79.7)
141 (81.9)
28 (70.0)
0.090
Moderate
23 (10.9)
19 (11.1)
4 (10.0)
0.848
Severe
20 (9.4)
12 (7.0)
8 (20.0)
0.025
Morphology of the distal cap
Blunt
51 (24.1)
24 (14.0)
27 (67.5)
<0.001
Side branch at the distal cap
83 (39.2)
59 (34.3)
24 (60.0)
0.003
Values are mean ± SD or percentage. value stands for comparison between final successful and final failed angiographic characteristics of CTO lesions. LM, left main artery; LAD, left anterior descending coronary artery; LCX, left circumflex coronary artery; RCA, right coronary artery; CC, collateral connection; VD, vessel disease.
