Evaluation of the Effect of Concurrent Chronic Total Occlusion and Successful Staged Revascularization on Long-Term Mortality in Patients with ST-Elevation Myocardial Infarction
Table 2
Baseline clinical and angiographic characteristics of patients with CTO who underwent PCI attempt.
Variable
CTO-PCI
value
Successful ( = 100, 68%)
Failed ( = 48, 32%)
Baseline characteristics
Age > 60 years
68 (68.0%)
32 (66.7%)
0.871
Male
78 (78.0%)
40 (83.3%)
0.450
Diabetes mellitus
23 (23.0%)
11 (22.9%)
0.991
Hypertension
65 (65.0%)
33 (68.8%)
0.652
Hyperlipidaemia
55 (55.0%)
28 (58.3%)
0.702
Current smoking
45 (45.0%)
19 (39.6%)
0.534
Prior MI
28 (28.0%)
16 (33.3%)
0.506
Prior PCI
28 (28.0%)
14 (29.2%)
0.883
Cardiogenic shock on admission
22 (22.0%)
10 (20.8%)
0.872
CrCL (mL/min)
0.727
Family history of CVD (%)
37 (37.0%)
19 (39.6%)
0.762
LVEF < 40%, (%)
45 (45.0%)
23 (47.9%)
0.739
Angiographic characteristics
Infarct-related artery
LAD, (%)
45 (45.0%)
21 (33.8%)
0.886
LCA, (%)
20 (20.0%)
10 (20.8%)
0.906
RCA, (%)
35 (35.0%)
17 (35.4%)
0.960
Number of diseased vessels
0.725
2
49 (49.0%)
25 (52.1%)
3
51 (51.0%)
23 (47.9%)
Non-IRA-CTO vessel
LAD, (%)
36 (36.0%)
20 (41.6%)
0.280
LCX, (%)
30 (30.0%)
14 (29.2%)
0.917
RCA, (%)
34 (34.0%)
14 (29.2%)
0.557
IABP, (%)
21 (21.0%)
11 (22.9%)
0.791
CTO lesion length (mm)
0.544
Reference diameter (mm)
0.462
Number of stent per lesion
—
—
Stented segment length (mm)
—
—
Complete revascularization
84 (84.0%)
6 (12.5%)
<0.001
Total fluoroscopy time (min)
0.364
Time of staged procedure after primary PCI (day)
0.876
Categorical variables are described as absolute numbers (%) and compared by means of the chi-square test; continuous variables are described as mean ± SD and compared by means of the Student’s -test. MI: myocardial infarction; PCI: percutaneous coronary intervention; CrCL: creatinine clearance; CVD: cardiovascular disease. LAD: left anterior descending coronary artery; LCA: left circumflex artery; RCA: right coronary artery; LVEF: left ventricular ejection fraction; IABP: intra-aortic balloon pump; CTO: chronic total occlusion; PCI: percutaneous coronary intervention.
