Research Article
Predictors for New Native-Vessel Occlusion in Patients with Prior Coronary Bypass Surgery: A Single-Center Retrospective Research
Table 1
Baseline patient characteristics.
| | Variables | All (N = 354) | No new CTO (n = 228) | New CTO (n = 126) | value |
| | Age (yrs.) | 61.71 ± 9.47 | 62.75 ± 7.93 | 61.80 ± 8.38 | 0.492 | | ＜65 (%) | 212 (59.89%) | 136 (59.64%) | 76 (60.31%) | | | 65 to ＜75 (%) | 142 (40.11%) | 92 (40.35%) | 50 (39.68%) | | | Sex | | | | 0.694 | | Male | 264 (74.58%) | 169 (74.12%) | 95 (75.40%) | | | Female | 90 (25.42%) | 59 (25.88%) | 31 (24.60%) | | | BMI (kg/m2) | 26.57 ± 3.88 | 27.06 ± 2.97 | 26.59 ± 3.48 | 0.397 | | ≤18.4 | 0 | 0 | 0 | | | 18.5–23.9 | 54 (15.25%) | 30 (13.16%) | 24 (19.05%) | | | 24.0–27.9 | 186 (52.54%) | 125 (54.82%) | 61 (48.41%) | | | ≥28 | 112 (31.64%) | 72 (31.58%) | 40 (31.75%) | | | Hypertension | 248 (70.06%) | 158 (69.30%) | 90 (71.43%) | 0.532 | | Hypercholesterolemia | 206 (58.19%) | 129 (56.59%) | 77 (61.11%) | 0.217 | | Diabetes mellitus | 140 (39.55%) | 87 (38.16%) | 62 (49.20%) | 0.044 | | Diet-controlled | 10 (7.14%) | 6 (6.90%) | 4 (6.45%) | | | Tablet-controlled | 64 (45.71%) | 39 (44.82%) | 30 (48.39%) | | | Insulin treatment | 66 (47.15%) | 42 (48.28%) | 28 (45.16%) | | | Smoker | | | | | | Never | 112 (31.64%) | 79 (34.64%) | 33 (26.19%) | | | Former | 144 (40.68%) | 111 (48.68%) | 33 (26.19%) | | | Current | 98 (27.68%) | 38 (16.67%) | 60 (47.62%) | | | Prior MI | 90 (25.42%) | 58 (25.44%) | 32 (25.40%) | 0.990 | | Prior PCI | 68 (19.21%) | 47 (20.61%) | 21 (16.67%) | 0.178 | | Prior cardiac surgery | 2 (0.57%) | 2 (0.88%) | 0 (0.00%) | 0.525 | | Prior heart failure | 36 (10.17%) | 21 (9.21%) | 15 (11.91%) | 0.237 | | Peripheral vascular disease | 74 (20.90%) | 45 (19.74%) | 29 (23.02%) | 0.279 | | | 70 (19.77%) | 46 (20.18%) | 24 (19.05%) | 0.704 | | Cerebrovascular disease | 24 (6.78%) | 14 (6.14%) | 10 (7.94%) | 0.337 | | Family history of CAD | 80 (22.60%) | 52 (22.81%) | 28 (22.22%) | 0.345 | | Atrial fibrillation/flutter | 36 (10.17%) | 18 (7.90%) | 18 (14.29%) | 0.480 | | | | | | 0.104 | | Presentation of ACS | 12 (3.39%) | 8 (3.51%) | 4 (3.17%) | | | CCS class of angina | 218 (61.58%) | 145 (63.60%) | 73 (57.94%) | | | Grade 1 | 110 (31.07%) | 68 (29.82%) | 42 (33.33%) | | | Grade 2 | 14 (3.69%) | 8 (3.51%) | 6 (2.78%) | | | Grade 3 | 58.43 ± 0.08% | 59.28% ± 0.07% | 56.89% ± 0.1% | 0.010 | | Grade 4 | 11 (3.10%) | 3 (1.32%) | 8 (6.35%) | | | Ejection fraction (%) | 31 (8.76%) | 14 (6.14%) | 17 (13.49%) | | | ≤40% | 312 (88.14%) | 211 (92.54%) | 101 (80.16%) | | | 40%–50% | | | | 0.404 | | ≥50% | 150 (42.37%) | 101 (44.30%) | 49 (38.89%) | | | Left ventricular grade | 164 (46.33%) | 100 (43.86%) | 64 (50.79%) | | | Class I | 38 (10.73%) | 26 (11.40%) | 12 (9.52%) | | | Class II | 2 (0.57%) | 2 (0.88%) | 0 (0.00%) | | | Class III | 77.6 ± 20.47 | 73.93 ± 17.94 | 79.09 ± 21.30 | 0.079 | | Class IV | 87.2 ± 22.49 | 90.5 ± 20.11 | 85.89 ± 23.33 | 0.172 | | Creatinine (μmol/l) | 38 (10.73%) | 51.19 ± 7.03 | 46.46 ± 11.85 | 0.484 | | GFR (ml/min/1.73 m2) | 2.47 ± 4.27 | 3.01 ± 4.40 | 2.26 ± 4.22 | 0.700 | | GFR < 60 ml/min/1.73 m2 | | | | | | Hs-CRP (mg/L) | | | | |
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